mirror of https://gitee.com/openkylin/linux.git
1051 Commits
Author | SHA1 | Message | Date |
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Aaron Tomlin | ed235875e2 |
kernel/watchdog.c: print traces for all cpus on lockup detection
A 'softlockup' is defined as a bug that causes the kernel to loop in kernel mode for more than a predefined period to time, without giving other tasks a chance to run. Currently, upon detection of this condition by the per-cpu watchdog task, debug information (including a stack trace) is sent to the system log. On some occasions, we have observed that the "victim" rather than the actual "culprit" (i.e. the owner/holder of the contended resource) is reported to the user. Often this information has proven to be insufficient to assist debugging efforts. To avoid loss of useful debug information, for architectures which support NMI, this patch makes it possible to improve soft lockup reporting. This is accomplished by issuing an NMI to each cpu to obtain a stack trace. If NMI is not supported we just revert back to the old method. A sysctl and boot-time parameter is available to toggle this feature. [dzickus@redhat.com: add CONFIG_SMP in certain areas] [akpm@linux-foundation.org: additional CONFIG_SMP=n optimisations] [mq@suse.cz: fix warning] Signed-off-by: Aaron Tomlin <atomlin@redhat.com> Signed-off-by: Don Zickus <dzickus@redhat.com> Cc: David S. Miller <davem@davemloft.net> Cc: Mateusz Guzik <mguzik@redhat.com> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Jan Moskyto Matejka <mq@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Kees Cook | 24f2e0273f |
x86, kaslr: boot-time selectable with hibernation
Changes kASLR from being compile-time selectable (blocked by CONFIG_HIBERNATION), to being boot-time selectable (with hibernation available by default) via the "kaslr" kernel command line. Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Kees Cook | a6e15a3904 |
PM / hibernate: introduce "nohibernate" boot parameter
To support using kernel features that are not compatible with hibernation, this creates the "nohibernate" kernel boot parameter to disable both hibernation and resume. This allows hibernation support to be a boot-time choice instead of only a compile-time choice. Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Linus Torvalds | 4251c2a670 |
Most of this is cleaning up various driver sysfs permissions so we can
re-add the perm check (we unified the module param and sysfs checks, but the module ones were stronger so we weakened them temporarily). Param parsing gets documented, and also "--" now forces args to be handed to init (and ignored by the kernel). Module NX/RO protections get tightened: we now set them before calling parse_args(). Cheers, Rusty. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJTl+oJAAoJENkgDmzRrbjxtUEP/jIXml01jE2HquOJ/DfrCJOt ry5L5Iy8wVBRotTszrXqlD6+W8fLYsEdhM65Wof1H7X1qjaulqYZmrL7bQn4rIGN YPUmO5rOzECeAPNW5+e2JLnR4bmS99gVcWzJFCHUBd7Z8ceKaoIk7/XvUg6Mdjg7 v0kJ5X+U9da2sVYYcZ71euth4ADLFDRNRexA1mPI6mKzJLOBgfvCBWZnkFVdBcjd VmL6ceFo/yP9Ed4pgG/4uXq1dZ4ZttpjPusDmNcjq+snOzsQb4tW+KB2Pr6iTwQy TDt7lQm5+xfUXgUG/S5L6PYn10P44Voo7AEJa+QK5YPSOY/eRVA0h4/ayP0vqDaJ LpZjqXbW77G4yOgEV9KRFLLXiFXykTh2TyCPYL5G2XVXQp1OmViu2f21JWJLFLgL mqOXYWdowOGVOOoTgwxIdxczCFCATJUaU5Ig6ay8C02E2mCwIV+IaGSdpsCiyjz/ dNNumMxWg0NMo/c0YG4K3Ake6ZaGrwbnuJYijaEj6mgpifhh7k4yhFciXGLpkLnS Yuo4ORO0GX34z1+bX0iwrgMGPdy7+BnbXsDdWJsbsnwnKKes/Sp44fNl4lPwdM3n siaPsxmfAtl9EGqbkU1Fk+x5+X/Lv2I/7/nX5n53520RLkJJpbeMDfHUqpbrqeUN JNUTOZ9o72EqDVKnn175 =IxSN -----END PGP SIGNATURE----- Merge tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux Pull module updates from Rusty Russell: "Most of this is cleaning up various driver sysfs permissions so we can re-add the perm check (we unified the module param and sysfs checks, but the module ones were stronger so we weakened them temporarily). Param parsing gets documented, and also "--" now forces args to be handed to init (and ignored by the kernel). Module NX/RO protections get tightened: we now set them before calling parse_args()" * tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: module: set nx before marking module MODULE_STATE_COMING. samples/kobject/: avoid world-writable sysfs files. drivers/hid/hid-picolcd_fb: avoid world-writable sysfs files. drivers/staging/speakup/: avoid world-writable sysfs files. drivers/regulator/virtual: avoid world-writable sysfs files. drivers/scsi/pm8001/pm8001_ctl.c: avoid world-writable sysfs files. drivers/hid/hid-lg4ff.c: avoid world-writable sysfs files. drivers/video/fbdev/sm501fb.c: avoid world-writable sysfs files. drivers/mtd/devices/docg3.c: avoid world-writable sysfs files. speakup: fix incorrect perms on speakup_acntsa.c cpumask.h: silence warning with -Wsign-compare Documentation: Update kernel-parameters.tx param: hand arguments after -- straight to init modpost: Fix resource leak in read_dump() |
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Masami Hiramatsu | f06e5153f4 |
kernel/panic.c: add "crash_kexec_post_notifiers" option for kdump after panic_notifers
Add a "crash_kexec_post_notifiers" boot option to run kdump after running panic_notifiers and dump kmsg. This can help rare situations where kdump fails because of unstable crashed kernel or hardware failure (memory corruption on critical data/code), or the 2nd kernel is already broken by the 1st kernel (it's a broken behavior, but who can guarantee that the "crashed" kernel works correctly?). Usage: add "crash_kexec_post_notifiers" to kernel boot option. Note that this actually increases risks of the failure of kdump. This option should be set only if you worry about the rare case of kdump failure rather than increasing the chance of success. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Acked-by: Motohiro Kosaki <Motohiro.Kosaki@us.fujitsu.com> Acked-by: Vivek Goyal <vgoyal@redhat.com> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@hitachi.com> Cc: Satoru MORIYA <satoru.moriya.br@hitachi.com> Cc: Tomoki Sekiyama <tomoki.sekiyama@hds.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Prarit Bhargava | 7b0b73d766 |
init/main.c: add initcall_blacklist kernel parameter
When a module is built into the kernel the module_init() function becomes an initcall. Sometimes debugging through dynamic debug can help, however, debugging built in kernel modules is typically done by changing the .config, recompiling, and booting the new kernel in an effort to determine exactly which module caused a problem. This patchset can be useful stand-alone or combined with initcall_debug. There are cases where some initcalls can hang the machine before the console can be flushed, which can make initcall_debug output inaccurate. Having the ability to skip initcalls can help further debugging of these scenarios. Usage: initcall_blacklist=<list of comma separated initcalls> ex) added "initcall_blacklist=sgi_uv_sysfs_init" as a kernel parameter and the log contains: blacklisting initcall sgi_uv_sysfs_init ... ... initcall sgi_uv_sysfs_init blacklisted ex) added "initcall_blacklist=foo_bar,sgi_uv_sysfs_init" as a kernel parameter and the log contains: blacklisting initcall foo_bar blacklisting initcall sgi_uv_sysfs_init ... ... initcall sgi_uv_sysfs_init blacklisted [akpm@linux-foundation.org: tweak printk text] Signed-off-by: Prarit Bhargava <prarit@redhat.com> Cc: Richard Weinberger <richard.weinberger@gmail.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Josh Boyer <jwboyer@fedoraproject.org> Cc: Rob Landley <rob@landley.net> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Akinobu Mita | 5ea3b1b2f8 |
cma: add placement specifier for "cma=" kernel parameter
Currently, "cma=" kernel parameter is used to specify the size of CMA, but we can't specify where it is located. We want to locate CMA below 4GB for devices only supporting 32-bit addressing on 64-bit systems without iommu. This enables to specify the placement of CMA by extending "cma=" kernel parameter. Examples: 1. locate 64MB CMA below 4GB by "cma=64M@0-4G" 2. locate 64MB CMA exact at 512MB by "cma=64M@512M" Note that the DMA contiguous memory allocator on x86 assumes that page_address() works for the pages to allocate. So this change requires to limit end address of contiguous memory area upto max_pfn_mapped to prevent from locating it on highmem area by the argument of dma_contiguous_reserve(). Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Don Dutile <ddutile@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linus Torvalds | 4dc4226f99 |
ACPI and power management updates for 3.16-rc1
- ACPICA update to upstream version 20140424. That includes a number of fixes and improvements related to things like GPE handling, table loading, headers, memory mapping and unmapping, DSDT/SSDT overriding, and the Unload() operator. The acpidump utility from upstream ACPICA is included too. From Bob Moore, Lv Zheng, David Box, David Binderman, and Colin Ian King. - Fixes and cleanups related to ACPI video and backlight interfaces from Hans de Goede. That includes blacklist entries for some new machines and using native backlight by default. - ACPI device enumeration changes to create platform devices rather than PNP devices for ACPI device objects with _HID by default. PNP devices will still be created for the ACPI device object with device IDs corresponding to real PNP devices, so that change should not break things left and right, and we're expecting to see more and more ACPI-enumerated platform devices in the future. From Zhang Rui and Rafael J Wysocki. - Updates for the ACPI LPSS (Low-Power Subsystem) driver allowing it to handle system suspend/resume on Asus T100 correctly. From Heikki Krogerus and Rafael J Wysocki. - PM core update introducing a mechanism to allow runtime-suspended devices to stay suspended over system suspend/resume transitions if certain additional conditions related to coordination within device hierarchy are met. Related PM documentation update and ACPI PM domain support for the new feature. From Rafael J Wysocki. - Fixes and improvements related to the "freeze" sleep state. They affect several places including cpuidle, PM core, ACPI core, and the ACPI battery driver. From Rafael J Wysocki and Zhang Rui. - Miscellaneous fixes and updates of the ACPI core from Aaron Lu, Bjørn Mork, Hanjun Guo, Lan Tianyu, and Rafael J Wysocki. - Fixes and cleanups for the ACPI processor and ACPI PAD (Processor Aggregator Device) drivers from Baoquan He, Manuel Schölling, Tony Camuso, and Toshi Kani. - System suspend/resume optimization in the ACPI battery driver from Lan Tianyu. - OPP (Operating Performance Points) subsystem updates from Chander Kashyap, Mark Brown, and Nishanth Menon. - cpufreq core fixes, updates and cleanups from Srivatsa S Bhat, Stratos Karafotis, and Viresh Kumar. - Updates, fixes and cleanups for the Tegra, powernow-k8, imx6q, s5pv210, nforce2, and powernv cpufreq drivers from Brian Norris, Jingoo Han, Paul Bolle, Philipp Zabel, Stratos Karafotis, and Viresh Kumar. - intel_pstate driver fixes and cleanups from Dirk Brandewie, Doug Smythies, and Stratos Karafotis. - Enabling the big.LITTLE cpufreq driver on arm64 from Mark Brown. - Fix for the cpuidle menu governor from Chander Kashyap. - New ARM clps711x cpuidle driver from Alexander Shiyan. - Hibernate core fixes and cleanups from Chen Gang, Dan Carpenter, Fabian Frederick, Pali Rohár, and Sebastian Capella. - Intel RAPL (Running Average Power Limit) driver updates from Jacob Pan. - PNP subsystem updates from Bjorn Helgaas and Fabian Frederick. - devfreq core updates from Chanwoo Choi and Paul Bolle. - devfreq updates for exynos4 and exynos5 from Chanwoo Choi and Bartlomiej Zolnierkiewicz. - turbostat tool fix from Jean Delvare. - cpupower tool updates from Prarit Bhargava, Ramkumar Ramachandra and Thomas Renninger. - New ACPI ec_access.c tool for poking at the EC in a safe way from Thomas Renninger. / -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAABCAAGBQJTjl16AAoJEILEb/54YlRxeKgP/RRQSV7lFtf582Dw/5M/iWOg qYeNtuYFLArEmJ7SpxHdKsU1ZRm3CahAS1j7grvQMQasUxTzoavMcSBNZefeaoNK d01LVNqcyKCZs3+izRezk5N1IY+AjdrOcqCdIk8rfgFnc6kOttYUrVcIzKuIKAvJ MsJ5s/uqP8G69FsAA3Ttdtr0HKiQhN4skSt424wntQRDeJNZPBs74mPKBGh8bxlO Zr/VCDibKQ2Z8jS7x+TzwZrOxgE1/9x0Cub6GAdTvAfS8A+utPwSkneUyopNqpQ+ tJ5rz5R+HpmPMerizBuU+5s+tvjDPtH4/OZvOPSpYraQSFLOwx3hAm+a5k7fOGmc XWjXnXWT0i0V3iQkwrspTNjX1RgywbsHbmXrcWn192HResvMQ9zk2gH2ch6m8JhN yTV5V51dOZicpPuaTCvIkJpsV33p6vRz+EdPBiXoEdua5KKtOg8EnQ470dNaMR92 3ZtWmIvSgGlyPyHlSHLfGXbPUwTYvDNV3aheIoXp9E6WY3WJN9J3WXm4EHKBNVaI H83kwuk1s92cgqh22H5Pcb0CmDcrbkUdP6hhsPS/aL80/EJMljRP2AYW1Y+l1LAf pzMLmekHFqQEDjFQltwGvFV/EjFeMHnqOgQONx9ygMaayCGGTYSDx3FbRDesf8t9 qhoFcTPSxoo0XjrGrR6b =tpdF -----END PGP SIGNATURE----- Merge tag 'pm+acpi-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm into next Pull ACPI and power management updates from Rafael Wysocki: "ACPICA is the leader this time (63 commits), followed by cpufreq (28 commits), devfreq (15 commits), system suspend/hibernation (12 commits), ACPI video and ACPI device enumeration (10 commits each). We have no major new features this time, but there are a few significant changes of how things work. The most visible one will probably be that we are now going to create platform devices rather than PNP devices by default for ACPI device objects with _HID. That was long overdue and will be really necessary to be able to use the same drivers for the same hardware blocks on ACPI and DT-based systems going forward. We're not expecting fallout from this one (as usual), but it's something to watch nevertheless. The second change having a chance to be visible is that ACPI video will now default to using native backlight rather than the ACPI backlight interface which should generally help systems with broken Win8 BIOSes. We're hoping that all problems with the native backlight handling that we had previously have been addressed and we are in a good enough shape to flip the default, but this change should be easy enough to revert if need be. In addition to that, the system suspend core has a new mechanism to allow runtime-suspended devices to stay suspended throughout system suspend/resume transitions if some extra conditions are met (generally, they are related to coordination within device hierarchy). However, enabling this feature requires cooperation from the bus type layer and for now it has only been implemented for the ACPI PM domain (used by ACPI-enumerated platform devices mostly today). Also, the acpidump utility that was previously shipped as a separate tool will now be provided by the upstream ACPICA along with the rest of ACPICA code, which will allow it to be more up to date and better supported, and we have one new cpuidle driver (ARM clps711x). The rest is improvements related to certain specific use cases, cleanups and fixes all over the place. Specifics: - ACPICA update to upstream version 20140424. That includes a number of fixes and improvements related to things like GPE handling, table loading, headers, memory mapping and unmapping, DSDT/SSDT overriding, and the Unload() operator. The acpidump utility from upstream ACPICA is included too. From Bob Moore, Lv Zheng, David Box, David Binderman, and Colin Ian King. - Fixes and cleanups related to ACPI video and backlight interfaces from Hans de Goede. That includes blacklist entries for some new machines and using native backlight by default. - ACPI device enumeration changes to create platform devices rather than PNP devices for ACPI device objects with _HID by default. PNP devices will still be created for the ACPI device object with device IDs corresponding to real PNP devices, so that change should not break things left and right, and we're expecting to see more and more ACPI-enumerated platform devices in the future. From Zhang Rui and Rafael J Wysocki. - Updates for the ACPI LPSS (Low-Power Subsystem) driver allowing it to handle system suspend/resume on Asus T100 correctly. From Heikki Krogerus and Rafael J Wysocki. - PM core update introducing a mechanism to allow runtime-suspended devices to stay suspended over system suspend/resume transitions if certain additional conditions related to coordination within device hierarchy are met. Related PM documentation update and ACPI PM domain support for the new feature. From Rafael J Wysocki. - Fixes and improvements related to the "freeze" sleep state. They affect several places including cpuidle, PM core, ACPI core, and the ACPI battery driver. From Rafael J Wysocki and Zhang Rui. - Miscellaneous fixes and updates of the ACPI core from Aaron Lu, Bjørn Mork, Hanjun Guo, Lan Tianyu, and Rafael J Wysocki. - Fixes and cleanups for the ACPI processor and ACPI PAD (Processor Aggregator Device) drivers from Baoquan He, Manuel Schölling, Tony Camuso, and Toshi Kani. - System suspend/resume optimization in the ACPI battery driver from Lan Tianyu. - OPP (Operating Performance Points) subsystem updates from Chander Kashyap, Mark Brown, and Nishanth Menon. - cpufreq core fixes, updates and cleanups from Srivatsa S Bhat, Stratos Karafotis, and Viresh Kumar. - Updates, fixes and cleanups for the Tegra, powernow-k8, imx6q, s5pv210, nforce2, and powernv cpufreq drivers from Brian Norris, Jingoo Han, Paul Bolle, Philipp Zabel, Stratos Karafotis, and Viresh Kumar. - intel_pstate driver fixes and cleanups from Dirk Brandewie, Doug Smythies, and Stratos Karafotis. - Enabling the big.LITTLE cpufreq driver on arm64 from Mark Brown. - Fix for the cpuidle menu governor from Chander Kashyap. - New ARM clps711x cpuidle driver from Alexander Shiyan. - Hibernate core fixes and cleanups from Chen Gang, Dan Carpenter, Fabian Frederick, Pali Rohár, and Sebastian Capella. - Intel RAPL (Running Average Power Limit) driver updates from Jacob Pan. - PNP subsystem updates from Bjorn Helgaas and Fabian Frederick. - devfreq core updates from Chanwoo Choi and Paul Bolle. - devfreq updates for exynos4 and exynos5 from Chanwoo Choi and Bartlomiej Zolnierkiewicz. - turbostat tool fix from Jean Delvare. - cpupower tool updates from Prarit Bhargava, Ramkumar Ramachandra and Thomas Renninger. - New ACPI ec_access.c tool for poking at the EC in a safe way from Thomas Renninger" * tag 'pm+acpi-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (187 commits) ACPICA: Namespace: Remove _PRP method support. intel_pstate: Improve initial busy calculation intel_pstate: add sample time scaling intel_pstate: Correct rounding in busy calculation intel_pstate: Remove C0 tracking PM / hibernate: fixed typo in comment ACPI: Fix x86 regression related to early mapping size limitation ACPICA: Tables: Add mechanism to control early table checksum verification. ACPI / scan: use platform bus type by default for _HID enumeration ACPI / scan: always register ACPI LPSS scan handler ACPI / scan: always register memory hotplug scan handler ACPI / scan: always register container scan handler ACPI / scan: Change the meaning of missing .attach() in scan handlers ACPI / scan: introduce platform_id device PNP type flag ACPI / scan: drop unsupported serial IDs from PNP ACPI scan handler ID list ACPI / scan: drop IDs that do not comply with the ACPI PNP ID rule ACPI / PNP: use device ID list for PNPACPI device enumeration ACPI / scan: .match() callback for ACPI scan handlers ACPI / battery: wakeup the system only when necessary power_supply: allow power supply devices registered w/o wakeup source ... |
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Rafael J. Wysocki | d9bd44933c |
Merge branch 'acpi-video'
* acpi-video: ACPI / video: Add 4 new models to the use_native_backlight DMI list ACPI / video: Add use native backlight quirk for the ThinkPad W530 ACPI / video: Unregister the backlight device if a raw one shows up later backlight: Add backlight device (un)registration notification nouveau: Don't check acpi_video_backlight_support() before registering backlight acer-wmi: Add Aspire 5741 to video_vendor_dmi_table acer-wmi: Switch to acpi_video_unregister_backlight ACPI / video: Add an acpi_video_unregister_backlight function ACPI / video: Don't register acpi_video_resume notifier without backlight devices ACPI / video: change acpi-video brightness_switch_enabled default to 0 |
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Rafael J. Wysocki | 0e36d43c9c |
Merge branch 'acpica'
* acpica: (63 commits) ACPICA: Namespace: Remove _PRP method support. ACPI: Fix x86 regression related to early mapping size limitation ACPICA: Tables: Add mechanism to control early table checksum verification. ACPICA: acpidump: Fix repetitive table dump in -n mode. ACPI: Clean up acpi_os_map/unmap_memory() to eliminate __iomem. ACPICA: Clean up redudant definitions already defined elsewhere ACPICA: Linux headers: Add <asm/acenv.h> to remove mis-ordered inclusion of <asm/acpi.h> ACPICA: Linux headers: Add <acpi/platform/aclinuxex.h> ACPICA: Linux headers: Remove ACPI_PREEMPTION_POINT() due to no usages. ACPICA: Update version to 20140424. ACPICA: Comment/format update, no functional change. ACPICA: Events: Update GPE handling and initialization code. ACPICA: Remove extraneous error message for large number of GPEs. ACPICA: Tables: Remove old mechanism to validate if XSDT contains NULL entries. ACPICA: Tables: Add new mechanism to skip NULL entries in RSDT and XSDT. ACPICA: acpidump: Add support to force using RSDT. ACPICA: Back port of improvements on exception code. ACPICA: Back port of _PRP update. ACPICA: acpidump: Fix truncated RSDP signature validation. ACPICA: Linux header: Add support for stubbed externals. ... |
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Rafael J. Wysocki | ee7f9d7c7c |
Merge branch 'pm-sleep'
* pm-sleep: PM / hibernate: fixed typo in comment PM / sleep: unregister wakeup source when disabling device wakeup PM / sleep: Introduce command line argument for sleep state enumeration PM / sleep: Use valid_state() for platform-dependent sleep states only PM / sleep: Add state field to pm_states[] entries PM / sleep: Update device PM documentation to cover direct_complete PM / sleep: Mechanism to avoid resuming runtime-suspended devices unnecessarily PM / hibernate: Fix memory corruption in resumedelay_setup() PM / hibernate: convert simple_strtoul to kstrtoul PM / hibernate: Documentation: Fix script for unswapping PM / hibernate: no kernel_power_off when pm_power_off NULL PM / hibernate: use unsigned local variables in swsusp_show_speed() |
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Linus Torvalds | 49eb7b0750 |
TTY/Serial driver patches for 3.16-rc1
Here is the big tty / serial driver pull request for 3.16-rc1. A variety of different serial driver fixes and updates and additions, nothing huge, and no real major core tty changes at all. All have been in linux-next for a while. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iEYEABECAAYFAlONXgoACgkQMUfUDdst+ymdSwCgwL0xmWjFYr/UbJ4LslOZ29Q4 BFQAoKyYe9LsfEyodBPabxJjKUtj1htz =ZGSN -----END PGP SIGNATURE----- Merge tag 'tty-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty into next Pull tty/serial driver updates from Greg KH: "Here is the big tty / serial driver pull request for 3.16-rc1. A variety of different serial driver fixes and updates and additions, nothing huge, and no real major core tty changes at all. All have been in linux-next for a while" * tag 'tty-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (84 commits) Revert "serial: imx: remove the DMA wait queue" serial: kgdb_nmi: Improve console integration with KDB I/O serial: kgdb_nmi: Switch from tasklets to real timers serial: kgdb_nmi: Use container_of() to locate private data serial: cpm_uart: No LF conversion in put_poll_char() serial: sirf: Fix compilation failure console: Remove superfluous readonly check console: Use explicit pointer type for vc_uni_pagedir* fields vgacon: Fix & cleanup refcounting ARM: tty: Move HVC DCC assembly to arch/arm tty/hvc/hvc_console: Fix wakeup of HVC thread on hvc_kick() drivers/tty/n_hdlc.c: replace kmalloc/memset by kzalloc vt: emulate 8- and 24-bit colour codes. printk/of_serial: fix serial console cessation part way through boot. serial: 8250_dma: check the result of TX buffer mapping serial: uart: add hw flow control support configuration tty/serial: at91: add interrupts for modem control lines tty/serial: at91: use mctrl_gpio helpers tty/serial: Add GPIOLIB helpers for controlling modem lines ARM: at91: gpio: implement get_direction ... |
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Lv Zheng | 4fc0a7e889 |
ACPI: Fix x86 regression related to early mapping size limitation
The following warning message is triggered: WARNING: CPU: 0 PID: 0 at mm/early_ioremap.c:136 __early_ioremap+0x11f/0x1f2() Modules linked in: CPU: 0 PID: 0 Comm: swapper Not tainted 3.15.0-rc1-00017-g86dfc6f3-dirty #298 Hardware name: Intel Corporation S2600CP/S2600CP, BIOS SE5C600.86B.99.99.x036.091920111209 09/19/2011 0000000000000009 ffffffff81b75c40 ffffffff817c627b 0000000000000000 ffffffff81b75c78 ffffffff81067b5d 000000000000007b 8000000000000563 00000000b96b20dc 0000000000000001 ffffffffff300e0c ffffffff81b75c88 Call Trace: [<ffffffff817c627b>] dump_stack+0x45/0x56 [<ffffffff81067b5d>] warn_slowpath_common+0x7d/0xa0 [<ffffffff81067c3a>] warn_slowpath_null+0x1a/0x20 [<ffffffff81d4b9d5>] __early_ioremap+0x11f/0x1f2 [<ffffffff81d4bc5b>] early_ioremap+0x13/0x15 [<ffffffff81d2b8f3>] __acpi_map_table+0x13/0x18 [<ffffffff817b8d1a>] acpi_os_map_memory+0x26/0x14e [<ffffffff813ff018>] acpi_tb_acquire_table+0x42/0x70 [<ffffffff813ff086>] acpi_tb_validate_table+0x27/0x37 [<ffffffff813ff0e5>] acpi_tb_verify_table+0x22/0xd8 [<ffffffff813ff6a8>] acpi_tb_install_non_fixed_table+0x60/0x1c9 [<ffffffff81d61024>] acpi_tb_parse_root_table+0x218/0x26a [<ffffffff81d1b120>] ? early_idt_handlers+0x120/0x120 [<ffffffff81d610cd>] acpi_initialize_tables+0x57/0x59 [<ffffffff81d5f25d>] acpi_table_init+0x1b/0x99 [<ffffffff81d2bca0>] acpi_boot_table_init+0x1e/0x85 [<ffffffff81d23043>] setup_arch+0x99d/0xcc6 [<ffffffff81d1b120>] ? early_idt_handlers+0x120/0x120 [<ffffffff81d1bbbe>] start_kernel+0x8b/0x415 [<ffffffff81d1b120>] ? early_idt_handlers+0x120/0x120 [<ffffffff81d1b5ee>] x86_64_start_reservations+0x2a/0x2c [<ffffffff81d1b72e>] x86_64_start_kernel+0x13e/0x14d ---[ end trace 11ae599a1898f4e7 ]--- when installing the following table during early stage: ACPI: SSDT 0x00000000B9638018 07A0C4 (v02 INTEL S2600CP 00004000 INTL 20100331) The regression is caused by the size limitation of the x86 early IO mapping. The root cause is: 1. ACPICA doesn't split IO memory mapping and table mapping; 2. Linux x86 OSL implements acpi_os_map_memory() using a size limited fix-map mechanism during early boot stage, which is more suitable for only IO mappings. This patch fixes this issue by utilizing acpi_gbl_verify_table_checksum to disable the table mapping during early stage and enabling it again for the late stage. In this way, the normal code path is not affected. Then after the code related to the root cause is cleaned up, the early checksum verification can be easily re-enabled. A new boot parameter - acpi_force_table_verification is introduced for the platforms that require the checksum verification to stop loading bad tables. This fix also covers the checksum verification for the table overrides. Now large tables can also be overridden using the initrd override mechanism. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Reported-and-tested-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Finn Thain | 7913ad1ad8 |
m68k: Multi-platform EARLY_PRINTK
Make the boot console available to more m68k platforms by leveraging the head.S debug console. The boot console is enabled by the "earlyprintk" command line argument which is how most other architectures do this. This is a change of behaviour for the Mac but does not negatively impact the common use-case which is not debugging. This is also a change of behaviour for other platforms because it means the serial port stays quiet when CONFIG_EARLY_PRINTK is not enabled. This is also an improvement for the common use-case. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Tested-by: Stephen N Chivers <schivers@csc.com.au> [Geert: CONSOLE_DEBUG should depend on CONFIG_FONT_SUPPORT] Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> |
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Rafael J. Wysocki | 0399d4db3e |
PM / sleep: Introduce command line argument for sleep state enumeration
On some systems the platform doesn't support neither PM_SUSPEND_MEM nor PM_SUSPEND_STANDBY, so PM_SUSPEND_FREEZE is the only available system sleep state. However, some user space frameworks only use the "mem" and (sometimes) "standby" sleep state labels, so the users of those systems need to modify user space in order to be able to use system suspend at all and that is not always possible. For this reason, add a new kernel command line argument, relative_sleep_states, allowing the users of those systems to change the way in which the kernel assigns labels to system sleep states. Namely, for relative_sleep_states=1, the "mem", "standby" and "freeze" labels will enumerate the available system sleem states from the deepest to the shallowest, respectively, so that "mem" is always present in /sys/power/state and the other state strings may or may not be presend depending on what is supported by the platform. Update system sleep states documentation to reflect this change. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Rusty Russell | 5888bcc5d2 |
Documentation: Update kernel-parameters.tx
1) __setup() is messy, prefer module_param and core_param. 2) Document -- 3) Document modprobe scraping /proc/cmdline. 4) Document handing of leftover parameters to init. 5) Document use of quotes to protect whitespace. Reported-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> |
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H. Peter Anvin | 7a5091d584 |
x86, rdrand: When nordrand is specified, disable RDSEED as well
One can logically expect that when the user has specified "nordrand", the user doesn't want any use of the CPU random number generator, neither RDRAND nor RDSEED, so disable both. Reported-by: Stephan Mueller <smueller@chronox.de> Cc: Theodore Ts'o <tytso@mit.edu> Link: http://lkml.kernel.org/r/21542339.0lFnPSyGRS@myon.chronox.de Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> |
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Hans de Goede | 886129a8ee |
ACPI / video: change acpi-video brightness_switch_enabled default to 0
acpi-video is unique in that it not only generates brightness up/down keypresses, but also (sometimes) actively changes the brightness itself. This presents an inconsistent kernel interface to userspace, basically there are 2 different scenarios, depending on the laptop model: 1) On some laptops a brightness up/down keypress means: show a brightness osd with the current brightness, iow it is a brightness has changed notification. 2) Where as on (a lot of) other laptops it means a brightness up/down key was pressed, deal with it. Most of the desktop environments interpret any press as in scenario 2, and change the brightness up / down as a response to the key events, causing it to be changed twice, once by acpi-video and once by the DE. With the new default for video.use_native_backlight we will be moving even more laptops over to behaving as in scenario 2. Making the remaining laptops even more of a weird exception. Also note that it is hard to detect scenario 1 properly in userspace, and AFAIK none of the DE-s deals with it. Therefor this commit changes the default of brightness_switch_enabled to 0 making its behavior consistent with all the other backlight drivers. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Aaron Lu <aaron.lu@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Rafael J. Wysocki | fd0c940522 | Merge back earlier ACPICA material. | |
Rob Herring | d50d7269eb |
tty/serial: add arm/arm64 semihosting earlycon
Add earlycon support for the arm/arm64 semihosting debug serial interface. This allows enabling a debug console when early_params are processed. This is based on the arm64 earlyprintk smh support and is intended to replace it. Signed-off-by: Rob Herring <robh@kernel.org> Cc: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Rob Herring | 0d3c673e78 |
tty/serial: pl011: add generic earlycon support
Add earlycon support for the pl011 serial port. This allows enabling the pl011 for console when early_params are processed. This is based on the arm64 earlyprintk support and is intended to replace it. Signed-off-by: Rob Herring <robh@kernel.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Lv Zheng | a94e88cdd8 |
ACPICA: Tables: Avoid SSDT installation with acpi_gbl_disable_ssdt_table_load.
It is reported that when acpi_gbl_disable_ssdt_table_load is specified, user still can see it installed into /sys/firmware/acpi/tables on Linux boxes. This is because the option only stops table "loading", but doesn't stop table "installing", thus it is still in the acpi_gbl_root_table_list. With previous cleanups, it is possible to prevent SSDT installations to make it not such confusing. The global variable is also renamed. Lv Zheng. Signed-off-by: Lv Zheng <lv.zheng@intel.com> [rjw: Subject] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Jean Delvare | 3053075cea |
Documentation/serial: Delete obsolete driver documentation
These serial drivers were removed in kernel v3.1, so we can drop their documentation files and references to their magic numbers and parameters. There are still references to these old drivers in Documentation/devices.txt but I'm afraid they can't be removed. Signed-off-by: Jean Delvare <jdelvare@suse.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jslaby@suse.cz> Cc: Rob Landley <rob@landley.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Linus Torvalds | eeb91e4f9d |
More ACPI and power management fixes and updates for 3.15-rc1
- Fix for a recently introduced CPU hotplug regression in ARM KVM from Ming Lei. - Fixes for breakage in the at32ap, loongson2_cpufreq, and unicore32 cpufreq drivers introduced during the 3.14 cycle (-stable material) from Chen Gang and Viresh Kumar. - New powernv cpufreq driver from Vaidyanathan Srinivasan, with bits from Gautham R Shenoy and Srivatsa S Bhat. - Exynos cpufreq driver fix preventing it from being included into multiplatform builds that aren't supported by it from Sachin Kamat. - cpufreq cleanups related to the usage of the driver_data field in struct cpufreq_frequency_table from Viresh Kumar. - cpufreq ppc driver cleanup from Sachin Kamat. - Intel BayTrail support for intel_idle and ACPI idle from Len Brown. - Intel CPU model 54 (Atom N2000 series) support for intel_idle from Jan Kiszka. - intel_idle fix for Intel Ivy Town residency targets from Len Brown. - turbostat updates (Intel Broadwell support and output cleanups) from Len Brown. - New cpuidle sysfs attribute for exporting C-states' target residency information to user space from Daniel Lezcano. - New kernel command line argument to prevent power domains enabled by the bootloader from being turned off even if they are not in use (for diagnostics purposes) from Tushar Behera. - Fixes for wakeup sysfs attributes documentation from Geert Uytterhoeven. - New ACPI video blacklist entry for ThinkPad Helix from Stephen Chandler Paul. - Assorted ACPI cleanups and a Kconfig help update from Jonghwan Choi, Zhihui Zhang, Hanjun Guo. / -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAABCAAGBQJTRxLAAAoJEILEb/54YlRxnCwP/16UwO/eVE8SIi0TqQboikFC k8u7F3zgDYG+xPSzXlCR+J7thTxGueQlrb+aM18PYuMVgaw2rpy7U7SIqEk8s6oR uFnzZCWKA5ZebbZn+NlodnQaJmbgJxwsVJDuuechUka/e67CaIc54JULi2ynZ0lz Kg/nU3NJhu4S81cT5SOTkJ9xE63oxHcCwKbNqEmxn7x7ddFzGK/DThG67NMEnW1F vHbBTSyI6vmXXg1f9aobUtuo3PfJkkx5jD+nR1H2e6wmB64tW7JPVKV3mi6LJfYM ui/8/gNb3PUMHMX1QbL9EFbPxl9miQx2NJ7dgFKa1HZ/WPyiXpJjz7uGr9O3Fau3 cFVREdaW8p2TAYWOEgH8luohhdK0j8UEpR/sEm0TrTjsK8wqczVf/hz6RraVJZiN ck6eVHjY6m3/bFQauZQ/r+DNeeNcdr+iLejgjbh/MXuF3j0kx+1dkKkzCEU2TgEZ 9etF0uzjlgyXySyxNKBeSW13+ssVA6kF5/BHns7LHoxTfGu7Y4oVaWUi+j74i66O bc+2ileNal71mS4v9gomnj6Ffj8oH8KXFA7k0sEsAdwLZNgThB5bTppmY/U7Y5Ce hTS81tcGe2vOVQzF9iFOF7LNKKussAVAtrgkkrA8lJLeOTfQbIo4+fMhORxf3X/p 3O7R/jc4cT+IXK8a2xRt =hGKg -----END PGP SIGNATURE----- Merge tag 'pm+acpi-3.15-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull more ACPI and power management fixes and updates from Rafael Wysocki: "This is PM and ACPI material that has emerged over the last two weeks and one fix for a CPU hotplug regression introduced by the recent CPU hotplug notifiers registration series. Included are intel_idle and turbostat updates from Len Brown (these have been in linux-next for quite some time), a new cpufreq driver for powernv (that might spend some more time in linux-next, but BenH was asking me so nicely to push it for 3.15 that I couldn't resist), some cpufreq fixes and cleanups (including fixes for some silly breakage in a couple of cpufreq drivers introduced during the 3.14 cycle), assorted ACPI cleanups, wakeup framework documentation fixes, a new sysfs attribute for cpuidle and a new command line argument for power domains diagnostics. Specifics: - Fix for a recently introduced CPU hotplug regression in ARM KVM from Ming Lei. - Fixes for breakage in the at32ap, loongson2_cpufreq, and unicore32 cpufreq drivers introduced during the 3.14 cycle (-stable material) from Chen Gang and Viresh Kumar. - New powernv cpufreq driver from Vaidyanathan Srinivasan, with bits from Gautham R Shenoy and Srivatsa S Bhat. - Exynos cpufreq driver fix preventing it from being included into multiplatform builds that aren't supported by it from Sachin Kamat. - cpufreq cleanups related to the usage of the driver_data field in struct cpufreq_frequency_table from Viresh Kumar. - cpufreq ppc driver cleanup from Sachin Kamat. - Intel BayTrail support for intel_idle and ACPI idle from Len Brown. - Intel CPU model 54 (Atom N2000 series) support for intel_idle from Jan Kiszka. - intel_idle fix for Intel Ivy Town residency targets from Len Brown. - turbostat updates (Intel Broadwell support and output cleanups) from Len Brown. - New cpuidle sysfs attribute for exporting C-states' target residency information to user space from Daniel Lezcano. - New kernel command line argument to prevent power domains enabled by the bootloader from being turned off even if they are not in use (for diagnostics purposes) from Tushar Behera. - Fixes for wakeup sysfs attributes documentation from Geert Uytterhoeven. - New ACPI video blacklist entry for ThinkPad Helix from Stephen Chandler Paul. - Assorted ACPI cleanups and a Kconfig help update from Jonghwan Choi, Zhihui Zhang, Hanjun Guo" * tag 'pm+acpi-3.15-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (28 commits) ACPI: Update the ACPI spec information in Kconfig arm, kvm: fix double lock on cpu_add_remove_lock cpuidle: sysfs: Export target residency information cpufreq: ppc: Remove duplicate inclusion of fsl_soc.h cpufreq: create another field .flags in cpufreq_frequency_table cpufreq: use kzalloc() to allocate memory for cpufreq_frequency_table cpufreq: don't print value of .driver_data from core cpufreq: ia64: don't set .driver_data to index cpufreq: powernv: Select CPUFreq related Kconfig options for powernv cpufreq: powernv: Use cpufreq_frequency_table.driver_data to store pstate ids cpufreq: powernv: cpufreq driver for powernv platform cpufreq: at32ap: don't declare local variable as static cpufreq: loongson2_cpufreq: don't declare local variable as static cpufreq: unicore32: fix typo issue for 'clk' cpufreq: exynos: Disable on multiplatform build PM / wakeup: Correct presence vs. emptiness of wakeup_* attributes PM / domains: Add pd_ignore_unused to keep power domains enabled ACPI / dock: Drop dock_device_ids[] table ACPI / video: Favor native backlight interface for ThinkPad Helix ACPI / thermal: Fix wrong variable usage in debug statement ... |
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Mark Salter | 56aeeba8c1 |
doc/kernel-parameters.txt: add early_ioremap_debug
Add description of early_ioremap_debug kernel parameter. Signed-off-by: Mark Salter <msalter@redhat.com> Cc: Borislav Petkov <borislav.petkov@amd.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dave Young <dyoung@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Tushar Behera | 39ac5ba51b |
PM / domains: Add pd_ignore_unused to keep power domains enabled
Keep all power-domains already enabled by bootloader on, even if no driver has claimed them. This is useful for debug and development, but should not be needed on a platform with proper driver support. Signed-off-by: Tushar Behera <tushar.behera@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Linus Torvalds | 70f6c08757 |
More ACPI and power management updates for 3.15-rc1
- Remaining changes from upstream ACPICA release 20140214 that introduce code to automatically serialize the execution of methods creating any named objects which really cannot be executed in parallel with each other anyway (previously ACPICA attempted to address that by aborting methods upon conflict detection, but that wasn't reliable enough and led to other issues). From Bob Moore and Lv Zheng. - intel_pstate fix to use del_timer_sync() instead of del_timer() in the exit path before freeing the timer structure from Dirk Brandewie (original patch from Thomas Gleixner). - cpufreq fix related to system resume from Viresh Kumar. - Serialization of frequency transitions in cpufreq that involve PRECHANGE and POSTCHANGE notifications to avoid ordering issues resulting from race conditions. From Srivatsa S Bhat and Viresh Kumar. - Revert of an ACPI processor driver change that was based on a specific interpretation of the ACPI spec which may not be correct (the relevant part of the spec appears to be incomplete). From Hanjun Guo. - Runtime PM core cleanups and documentation updates from Geert Uytterhoeven. - PNP core cleanup from Michael Opdenacker. / -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAABCAAGBQJTO1+vAAoJEILEb/54YlRxHYgP/RB18RLcwSIPMTWoZPo5t+pd IGtHkG5xzCBZXiqL9OJLm+dH1V5w+wZVXh2865ZDiqq4CZYZWD6RUQnx5q0rSVR5 54PYzx2I0i8ApPxRYTTmnb2NHUPedp3l0YSRC0gt73Q/6o9TcmOMtcn5pfTyCvbB m3am3mpKKxRD+vYCADjjUtuj4NQ62z9DjM5iJIql7Pj4kAJVgSxP8nsfHY6EwNaT m9mnNCA6Zemh89luM1W2vw69ZoZwLAbXIXJYCNy3khT13SYO2SCNhX/tlY7ncCvv P+9gawJb6Wio7pVHqRR0Lesc8J29uzivEeS8WqZ3R0P0HoTP6z5a5R+b06ecGQjF OWvj7wURjZE4t7qEtIOHmwIyCRE4Nxly90r5upj9kKVBaczz/LbDeCVfKU/Y2Vu6 PPxmjRwjO4S8FqLihwiXCSYVf3pxBrDKgjjofM7f2CiO8D41C4KhgowbUqyUSCgw VKXU6UQbzVigfrGXsdqIJiTnEMmbOvrPy6PaVh27NlwXX3sg1SwYcoegsW+ee7m1 jJdl1TRI27pl7NPgTkLpf5K7n6mkDsou8Y+PcQhFa6FNTn/k8gp/RfOHpLHaNTjL 15Aswkm70Ojeae+Ahx8ZgrWXF7iu+uBX7KakeUVQJg/PFjXIspx+c/SrGzh7ZLa1 aOqoKfFY7zDke4AV3eH/ =EfZ8 -----END PGP SIGNATURE----- Merge tag 'pm+acpi-3.15-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull more ACPI and power management updates from Rafael Wysocki: "These are commits that were not quite ready when I sent the original pull request for 3.15-rc1 several days ago, but they have spent some time in linux-next since then and appear to be good to go. All of them are fixes and cleanups. Specifics: - Remaining changes from upstream ACPICA release 20140214 that introduce code to automatically serialize the execution of methods creating any named objects which really cannot be executed in parallel with each other anyway (previously ACPICA attempted to address that by aborting methods upon conflict detection, but that wasn't reliable enough and led to other issues). From Bob Moore and Lv Zheng. - intel_pstate fix to use del_timer_sync() instead of del_timer() in the exit path before freeing the timer structure from Dirk Brandewie (original patch from Thomas Gleixner). - cpufreq fix related to system resume from Viresh Kumar. - Serialization of frequency transitions in cpufreq that involve PRECHANGE and POSTCHANGE notifications to avoid ordering issues resulting from race conditions. From Srivatsa S Bhat and Viresh Kumar. - Revert of an ACPI processor driver change that was based on a specific interpretation of the ACPI spec which may not be correct (the relevant part of the spec appears to be incomplete). From Hanjun Guo. - Runtime PM core cleanups and documentation updates from Geert Uytterhoeven. - PNP core cleanup from Michael Opdenacker" * tag 'pm+acpi-3.15-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: cpufreq: Make cpufreq_notify_transition & cpufreq_notify_post_transition static cpufreq: Convert existing drivers to use cpufreq_freq_transition_{begin|end} cpufreq: Make sure frequency transitions are serialized intel_pstate: Use del_timer_sync in intel_pstate_cpu_stop cpufreq: resume drivers before enabling governors PM / Runtime: Spelling s/competing/completing/ PM / Runtime: s/foo_process_requests/foo_process_next_request/ PM / Runtime: GENERIC_SUBSYS_PM_OPS is gone PM / Runtime: Correct documented return values for generic PM callbacks PM / Runtime: Split line longer than 80 characters PM / Runtime: dev_pm_info.runtime_error is signed Revert "ACPI / processor: Make it possible to get APIC ID via GIC" ACPICA: Enable auto-serialization as a default kernel behavior. ACPICA: Ignore sync_level for methods that have been auto-serialized. ACPICA: Add additional named objects for the auto-serialize method scan. ACPICA: Add auto-serialization support for ill-behaved control methods. ACPICA: Remove global option to serialize all control methods. PNP: remove deprecated IRQF_DISABLED |
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Linus Torvalds | c6f21243ce |
Merge branch 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 vdso changes from Peter Anvin: "This is the revamp of the 32-bit vdso and the associated cleanups. This adds timekeeping support to the 32-bit vdso that we already have in the 64-bit vdso. Although 32-bit x86 is legacy, it is likely to remain in the embedded space for a very long time to come. This removes the traditional COMPAT_VDSO support; the configuration variable is reused for simply removing the 32-bit vdso, which will produce correct results but obviously suffer a performance penalty. Only one beta version of glibc was affected, but that version was unfortunately included in one OpenSUSE release. This is not the end of the vdso cleanups. Stefani and Andy have agreed to continue work for the next kernel cycle; in fact Andy has already produced another set of cleanups that came too late for this cycle. An incidental, but arguably important, change is that this ensures that unused space in the VVAR page is properly zeroed. It wasn't before, and would contain whatever garbage was left in memory by BIOS or the bootloader. Since the VVAR page is accessible to user space this had the potential of information leaks" * 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits) x86, vdso: Fix the symbol versions on the 32-bit vDSO x86, vdso, build: Don't rebuild 32-bit vdsos on every make x86, vdso: Actually discard the .discard sections x86, vdso: Fix size of get_unmapped_area() x86, vdso: Finish removing VDSO32_PRELINK x86, vdso: Move more vdso definitions into vdso.h x86: Load the 32-bit vdso in place, just like the 64-bit vdsos x86, vdso32: handle 32 bit vDSO larger one page x86, vdso32: Disable stack protector, adjust optimizations x86, vdso: Zero-pad the VVAR page x86, vdso: Add 32 bit VDSO time support for 64 bit kernel x86, vdso: Add 32 bit VDSO time support for 32 bit kernel x86, vdso: Patch alternatives in the 32-bit VDSO x86, vdso: Introduce VVAR marco for vdso32 x86, vdso: Cleanup __vdso_gettimeofday() x86, vdso: Replace VVAR(vsyscall_gtod_data) by gtod macro x86, vdso: __vdso_clock_gettime() cleanup x86, vdso: Revamp vclock_gettime.c mm: Add new func _install_special_mapping() to mmap.c x86, vdso: Make vsyscall_gtod_data handling x86 generic ... |
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Linus Torvalds | 4dedde7c7a |
ACPI and power management updates for 3.15-rc1
- Device PM QoS support for latency tolerance constraints on systems with hardware interfaces allowing such constraints to be specified. That is necessary to prevent hardware-driven power management from becoming overly aggressive on some systems and to prevent power management features leading to excessive latencies from being used in some cases. - Consolidation of the handling of ACPI hotplug notifications for device objects. This causes all device hotplug notifications to go through the root notify handler (that was executed for all of them anyway before) that propagates them to individual subsystems, if necessary, by executing callbacks provided by those subsystems (those callbacks are associated with struct acpi_device objects during device enumeration). As a result, the code in question becomes both smaller in size and more straightforward and all of those changes should not affect users. - ACPICA update, including fixes related to the handling of _PRT in cases when it is broken and the addition of "Windows 2013" to the list of supported "features" for _OSI (which is necessary to support systems that work incorrectly or don't even boot without it). Changes from Bob Moore and Lv Zheng. - Consolidation of ACPI _OST handling from Jiang Liu. - ACPI battery and AC fixes allowing unusual system configurations to be handled by that code from Alexander Mezin. - New device IDs for the ACPI LPSS driver from Chiau Ee Chew. - ACPI fan and thermal optimizations related to system suspend and resume from Aaron Lu. - Cleanups related to ACPI video from Jean Delvare. - Assorted ACPI fixes and cleanups from Al Stone, Hanjun Guo, Lan Tianyu, Paul Bolle, Tomasz Nowicki. - Intel RAPL (Running Average Power Limits) driver cleanups from Jacob Pan. - intel_pstate fixes and cleanups from Dirk Brandewie. - cpufreq fixes related to system suspend/resume handling from Viresh Kumar. - cpufreq core fixes and cleanups from Viresh Kumar, Stratos Karafotis, Saravana Kannan, Rashika Kheria, Joe Perches. - cpufreq drivers updates from Viresh Kumar, Zhuoyu Zhang, Rob Herring. - cpuidle fixes related to the menu governor from Tuukka Tikkanen. - cpuidle fix related to coupled CPUs handling from Paul Burton. - Asynchronous execution of all device suspend and resume callbacks, except for ->prepare and ->complete, during system suspend and resume from Chuansheng Liu. - Delayed resuming of runtime-suspended devices during system suspend for the PCI bus type and ACPI PM domain. - New set of PM helper routines to allow device runtime PM callbacks to be used during system suspend and resume more easily from Ulf Hansson. - Assorted fixes and cleanups in the PM core from Geert Uytterhoeven, Prabhakar Lad, Philipp Zabel, Rashika Kheria, Sebastian Capella. - devfreq fix from Saravana Kannan. / -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAABCAAGBQJTLgB1AAoJEILEb/54YlRxfs4P/35fIu9h8ClNWUPXqi3nlGIt yMyumKvF1VdsOKLbjTtFq6B3UOlhqDijYTCQd7Xt7X8ONTk/ND9ec2t/5xGkSdUI q46fa0qZXeqUn0Kt2t+kl6tgVQOkDj94aNlEh+7Ya3Uu6WYDDfmZtOBOFAMk6D8l ND4rHJpX+eUsRLBrcxaUxxdD8AW5guGcPKyeyzsXv1bY1BZnpLFrZ3PhuI5dn2CL L/zmk3A+wG6+ZlQxnwDdrKa3E6uhRSIDeF0vI4Byspa1wi5zXknJG2J7MoQ9JEE9 VQpBXlqach5wgXqJ8PAqAeaB6Ie26/F7PYG8r446zKw/5UUtdNUx+0dkjQ7Mz8Tu ajuVxfwrrPhZeQqmVBxlH5Gg7Ez2KBKEfDxTdRnzI7FoA7PE5XDcg3kO64bhj8LJ yugnV/ToU9wMztZnPC7CoGPwUgxMJvr9LwmxS4aeKcVUBES05eg0vS3lwdZMgqkV iO0QkWTmhZ952qZCqZxbh0JqaaX8Wgx2kpX2tf1G2GJqLMZco289bLh6njNT+8CH EzdQKYYyn6G6+Qg2M0f/6So3qU17x9XtE4ZBWQdGDpqYOGZhjZAOs/VnB1Ysw/K3 cDBzswlJd0CyyUps9B+qbf49OpbWVwl5kKeuHUuPxugEVryhpSp9AuG+tNil74Sj JuGTGR4fyFjDBX5cvAPm =ywR6 -----END PGP SIGNATURE----- Merge tag 'pm+acpi-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI and power management updates from Rafael Wysocki: "The majority of this material spent some time in linux-next, some of it even several weeks. There are a few relatively fresh commits in it, but they are mostly fixes and simple cleanups. ACPI took the lead this time, both in terms of the number of commits and the number of modified lines of code, cpufreq follows and there are a few changes in the PM core and in cpuidle too. A new feature that already got some LWN.net's attention is the device PM QoS extension allowing latency tolerance requirements to be propagated from leaf devices to their ancestors with hardware interfaces for specifying latency tolerance. That should help systems with hardware-driven power management to avoid going too far with it in cases when there are latency tolerance constraints. There also are some significant changes in the ACPI core related to the way in which hotplug notifications are handled. They affect PCI hotplug (ACPIPHP) and the ACPI dock station code too. The bottom line is that all those notification now go through the root notify handler and are propagated to the interested subsystems by means of callbacks instead of having to install a notify handler for each device object that we can potentially get hotplug notifications for. In addition to that ACPICA will now advertise "Windows 2013" compatibility for _OSI, because some systems out there don't work correctly if that is not done (some of them don't even boot). On the system suspend side of things, all of the device suspend and resume callbacks, except for ->prepare() and ->complete(), are now going to be executed asynchronously as that turns out to speed up system suspend and resume on some platforms quite significantly and we have a few more optimizations in that area. Apart from that, there are some new device IDs and fixes and cleanups all over. In particular, the system suspend and resume handling by cpufreq should be improved and the cpuidle menu governor should be a bit more robust now. Specifics: - Device PM QoS support for latency tolerance constraints on systems with hardware interfaces allowing such constraints to be specified. That is necessary to prevent hardware-driven power management from becoming overly aggressive on some systems and to prevent power management features leading to excessive latencies from being used in some cases. - Consolidation of the handling of ACPI hotplug notifications for device objects. This causes all device hotplug notifications to go through the root notify handler (that was executed for all of them anyway before) that propagates them to individual subsystems, if necessary, by executing callbacks provided by those subsystems (those callbacks are associated with struct acpi_device objects during device enumeration). As a result, the code in question becomes both smaller in size and more straightforward and all of those changes should not affect users. - ACPICA update, including fixes related to the handling of _PRT in cases when it is broken and the addition of "Windows 2013" to the list of supported "features" for _OSI (which is necessary to support systems that work incorrectly or don't even boot without it). Changes from Bob Moore and Lv Zheng. - Consolidation of ACPI _OST handling from Jiang Liu. - ACPI battery and AC fixes allowing unusual system configurations to be handled by that code from Alexander Mezin. - New device IDs for the ACPI LPSS driver from Chiau Ee Chew. - ACPI fan and thermal optimizations related to system suspend and resume from Aaron Lu. - Cleanups related to ACPI video from Jean Delvare. - Assorted ACPI fixes and cleanups from Al Stone, Hanjun Guo, Lan Tianyu, Paul Bolle, Tomasz Nowicki. - Intel RAPL (Running Average Power Limits) driver cleanups from Jacob Pan. - intel_pstate fixes and cleanups from Dirk Brandewie. - cpufreq fixes related to system suspend/resume handling from Viresh Kumar. - cpufreq core fixes and cleanups from Viresh Kumar, Stratos Karafotis, Saravana Kannan, Rashika Kheria, Joe Perches. - cpufreq drivers updates from Viresh Kumar, Zhuoyu Zhang, Rob Herring. - cpuidle fixes related to the menu governor from Tuukka Tikkanen. - cpuidle fix related to coupled CPUs handling from Paul Burton. - Asynchronous execution of all device suspend and resume callbacks, except for ->prepare and ->complete, during system suspend and resume from Chuansheng Liu. - Delayed resuming of runtime-suspended devices during system suspend for the PCI bus type and ACPI PM domain. - New set of PM helper routines to allow device runtime PM callbacks to be used during system suspend and resume more easily from Ulf Hansson. - Assorted fixes and cleanups in the PM core from Geert Uytterhoeven, Prabhakar Lad, Philipp Zabel, Rashika Kheria, Sebastian Capella. - devfreq fix from Saravana Kannan" * tag 'pm+acpi-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (162 commits) PM / devfreq: Rewrite devfreq_update_status() to fix multiple bugs PM / sleep: Correct whitespace errors in <linux/pm.h> intel_pstate: Set core to min P state during core offline cpufreq: Add stop CPU callback to cpufreq_driver interface cpufreq: Remove unnecessary braces cpufreq: Fix checkpatch errors and warnings cpufreq: powerpc: add cpufreq transition latency for FSL e500mc SoCs MAINTAINERS: Reorder maintainer addresses for PM and ACPI PM / Runtime: Update runtime_idle() documentation for return value meaning video / output: Drop display output class support fujitsu-laptop: Drop unneeded include acer-wmi: Stop selecting VIDEO_OUTPUT_CONTROL ACPI / gpu / drm: Stop selecting VIDEO_OUTPUT_CONTROL ACPI / video: fix ACPI_VIDEO dependencies cpufreq: remove unused notifier: CPUFREQ_{SUSPENDCHANGE|RESUMECHANGE} cpufreq: Do not allow ->setpolicy drivers to provide ->target cpufreq: arm_big_little: set 'physical_cluster' for each CPU cpufreq: arm_big_little: make vexpress driver depend on bL core driver ACPI / button: Add ACPI Button event via netlink routine ACPI: Remove duplicate definitions of PREFIX ... |
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Linus Torvalds | e06df6a7ea |
Merge branch 'x86-kaslr-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 kaslr update from Ingo Molnar: "This adds kernel module load address randomization" * 'x86-kaslr-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86, kaslr: fix module lock ordering problem x86, kaslr: randomize module base load address |
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Lv Zheng | 08e1d7c029 |
ACPICA: Enable auto-serialization as a default kernel behavior.
The previous commit "ACPICA: Add auto-serialization support for ill-behaved control methods" introduced the auto-serialization facility as a workaround that can be enabled by "acpi_auto_serialize": This feature marks control methods that create named objects as "serialized" to avoid unwanted AE_ALREADY_EXISTS control method evaluation failures. Enable method auto-serialization as the default kernel behavior. The new kernel parameter is also changed from "acpi_auto_serialize" to "acpi_no_auto_serialize" to reflect the default behavior. References: https://bugzilla.kernel.org/show_bug.cgi?id=52191 References: http://www.spinics.net/lists/linux-acpi/msg49496.html Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Bob Moore | 22b5afce6a |
ACPICA: Add auto-serialization support for ill-behaved control methods.
This change adds support to automatically mark a control method as "serialized" if the method creates any named objects. This will positively prevent the method from being entered by more than one thread and thus preventing a possible abort when an attempt is made to create an object twice. Implemented by parsing all non-serialize control methods at table load time. This feature is disabled by default and this patch also adds a new Linux kernel parameter "acpi_auto_serialize" to allow this feature to be turned on for a specific boot. References: https://bugzilla.kernel.org/show_bug.cgi?id=52191 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Lv Zheng | e2b8ddcc6b |
ACPICA: Remove global option to serialize all control methods.
According to the reports, the "acpi_serialize" mechanism is broken as: A. The parallel method calls can still happen when the interpreter lock is released under the following conditions: 1. External callbacks are invoked, for example, by the region handlers, the exception handlers, etc.; 2. Module level execution is performed when Load/LoadTable opcodes are executed, and 3. The _REG control methods are invoked to complete the region registrations. B. For the following situations, the interpreter lock need to be released even for a serialized method while currently, the lock-releasing operation is marked as a no-op by acpi_ex_relinquish/reacquire_interpreter() when this mechanism is enabled: 1. Wait opcode is executed, 2. Acquire opcode is executed, and 3. Sleep opcode is executed. This patch removes this mechanism and the internal acpi_ex_relinquish/reacquire_interpreter() APIs. Lv Zheng. References: https://bugzilla.kernel.org/show_bug.cgi?id=52191 Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Chris Bainbridge | 69f2366c94 |
x86, cpu: Add forcepae parameter for booting PAE kernels on PAE-disabled Pentium M
Many Pentium M systems disable PAE but may have a functionally usable PAE implementation. This adds the "forcepae" parameter which bypasses the boot check for PAE, and sets the CPU as being PAE capable. Using this parameter will taint the kernel with TAINT_CPU_OUT_OF_SPEC. Signed-off-by: Chris Bainbridge <chris.bainbridge@gmail.com> Link: http://lkml.kernel.org/r/20140307114040.GA4997@localhost Acked-by: Borislav Petkov <bp@suse.de> Signed-off-by: H. Peter Anvin <hpa@zytor.com> |
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Andy Lutomirski | b0b49f2673 |
x86, vdso: Remove compat vdso support
The compat vDSO is a complicated hack that's needed to maintain compatibility with a small range of glibc versions. This removes it and replaces it with a much simpler hack: a config option to disable the 32-bit vDSO by default. This also changes the default value of CONFIG_COMPAT_VDSO to n -- users configuring kernels from scratch almost certainly want that choice. Signed-off-by: Andy Lutomirski <luto@amacapital.net> Link: http://lkml.kernel.org/r/4bb4690899106eb11430b1186d5cc66ca9d1660c.1394751608.git.luto@amacapital.net Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> |
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Kees Cook | e2b32e6785 |
x86, kaslr: randomize module base load address
Randomize the load address of modules in the kernel to make kASLR effective for modules. Modules can only be loaded within a particular range of virtual address space. This patch adds 10 bits of entropy to the load address by adding 1-1024 * PAGE_SIZE to the beginning range where modules are loaded. The single base offset was chosen because randomizing each module load ends up wasting/fragmenting memory too much. Prior approaches to minimizing fragmentation while doing randomization tend to result in worse entropy than just doing a single base address offset. Example kASLR boot without this change, with a single module loaded: ---[ Modules ]--- 0xffffffffc0000000-0xffffffffc0001000 4K ro GLB x pte 0xffffffffc0001000-0xffffffffc0002000 4K ro GLB NX pte 0xffffffffc0002000-0xffffffffc0004000 8K RW GLB NX pte 0xffffffffc0004000-0xffffffffc0200000 2032K pte 0xffffffffc0200000-0xffffffffff000000 1006M pmd ---[ End Modules ]--- Example kASLR boot after this change, same module loaded: ---[ Modules ]--- 0xffffffffc0000000-0xffffffffc0200000 2M pmd 0xffffffffc0200000-0xffffffffc03bf000 1788K pte 0xffffffffc03bf000-0xffffffffc03c0000 4K ro GLB x pte 0xffffffffc03c0000-0xffffffffc03c1000 4K ro GLB NX pte 0xffffffffc03c1000-0xffffffffc03c3000 8K RW GLB NX pte 0xffffffffc03c3000-0xffffffffc0400000 244K pte 0xffffffffc0400000-0xffffffffff000000 1004M pmd ---[ End Modules ]--- Signed-off-by: Andy Honig <ahonig@google.com> Link: http://lkml.kernel.org/r/20140226005916.GA27083@www.outflux.net Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> |
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Lv Zheng | 4dde507fc1 |
ACPICA: Add boot option to disable auto return object repair
Sometimes, there might be bugs caused by unexpected AML which is compliant to the Windows but not compliant to the Linux implementation. There is a predefined validation mechanism implemented in ACPICA to repair the unexpected AML evaluation results that are caused by the unexpected AMLs. For example, BIOS may return misorder _CST result and the repair mechanism can make an ascending order on the returned _CST package object based on the C-state type. This mechanism is quite useful to implement an AML interpreter with better compliance with the real world where Windows is the de-facto standard and BIOS codes are only tested on one platform thus not compliant to the ACPI specification. But if a compliance issue hasn't been figured out yet, it will be difficult for developers to identify if the unexpected evaluation result is caused by this mechanism or by the AML interpreter. For example, _PR0 is expected to be a control method, but BIOS may use Package: "Name(_PR0, Package(1) {P1PR})". This boot option can disable the predefined validation mechanism so that developers can make sure the root cause comes from the parser/executer. This patch adds a new kernel parameter to disable this feature. A build test has been made on a Dell Inspiron mini 1100 (i386 z530) machine when this patch is applied and the corresponding boot test is performed w/ or w/o the new kernel parameter specified. References: https://bugzilla.kernel.org/show_bug.cgi?id=67901 Tested-by: Fabian Wehning <fabian.wehning@googlemail.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Randy Dunlap | 277cba1d28 |
Documentation/kernel-parameters.txt: fix memmap= language
Clean up descriptions of memmap= boot options. Add periods (full stops), drop commas, change "used" to "reserved" or "marked". Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Andiry Xu <andiry.xu@gmail.com> Acked-by: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linus Torvalds | ba6b5084e6 |
Bug-fixes:
- Don't DoS with 'swiotlb is full' message. - Documentation update. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAABAgAGBQJS5nImAAoJEFjIrFwIi8fJ7vMH/Rh0rSL66ffVXy6XYOYIOlrZ 6ZyBDFEdVhsH25tpVn+HlrIY8Fo6tb6e8Jnyh9qzVO487pWcawv+OyEzKaw+bbst aDO6rygwsca4DpdJWg6Q3kD+Kusi444eg/7h3jCMHIzW/g2fRmu9HVpXP6GSPqGB 390113RYpF/KdEjuNL5DZqK/1ciE9IOwVnZcuR/aa2R7TswWWQ9yjWpY7GcNCYMT m7Gv/kf34a6UC/TPLLV6mtuIpZQRNtlPlhUW461/oGCEFgvakMR42AzFSgpaicdz 45JnG0Gxr4rvOcNjCZPsJe6ehfyJFNgkF/p8LGqPcw2LGZvVHHToodCaPmZwGIs= =q2Dl -----END PGP SIGNATURE----- Merge tag 'stable/for-linus-3.14-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb Pull swiotlb bug-fixes from Konrad Rzeszutek Wilk: - Don't DoS with 'swiotlb is full' message. - Documentation update. * tag 'stable/for-linus-3.14-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb: swiotlb: Don't DoS us with 'swiotlb buffer is full' (v2) swiotlb: update format |
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Linus Torvalds | 09da8dfa98 |
ACPI and power management updates for 3.14-rc1
- ACPI core changes to make it create a struct acpi_device object for every device represented in the ACPI tables during all namespace scans regardless of the current status of that device. In accordance with this, ACPI hotplug operations will not delete those objects, unless the underlying ACPI tables go away. - On top of the above, new sysfs attribute for ACPI device objects allowing user space to check device status by triggering the execution of _STA for its ACPI object. From Srinivas Pandruvada. - ACPI core hotplug changes reducing code duplication, integrating the PCI root hotplug with the core and reworking container hotplug. - ACPI core simplifications making it use ACPI_COMPANION() in the code "glueing" ACPI device objects to "physical" devices. - ACPICA update to upstream version 20131218. This adds support for the DBG2 and PCCT tables to ACPICA, fixes some bugs and improves debug facilities. From Bob Moore, Lv Zheng and Betty Dall. - Init code change to carry out the early ACPI initialization earlier. That should allow us to use ACPI during the timekeeping initialization and possibly to simplify the EFI initialization too. From Chun-Yi Lee. - Clenups of the inclusions of ACPI headers in many places all over from Lv Zheng and Rashika Kheria (work in progress). - New helper for ACPI _DSM execution and rework of the code in drivers that uses _DSM to execute it via the new helper. From Jiang Liu. - New Win8 OSI blacklist entries from Takashi Iwai. - Assorted ACPI fixes and cleanups from Al Stone, Emil Goode, Hanjun Guo, Lan Tianyu, Masanari Iida, Oliver Neukum, Prarit Bhargava, Rashika Kheria, Tang Chen, Zhang Rui. - intel_pstate driver updates, including proper Baytrail support, from Dirk Brandewie and intel_pstate documentation from Ramkumar Ramachandra. - Generic CPU boost ("turbo") support for cpufreq from Lukasz Majewski. - powernow-k6 cpufreq driver fixes from Mikulas Patocka. - cpufreq core fixes and cleanups from Viresh Kumar, Jane Li, Mark Brown. - Assorted cpufreq drivers fixes and cleanups from Anson Huang, John Tobias, Paul Bolle, Paul Walmsley, Sachin Kamat, Shawn Guo, Viresh Kumar. - cpuidle cleanups from Bartlomiej Zolnierkiewicz. - Support for hibernation APM events from Bin Shi. - Hibernation fix to avoid bringing up nonboot CPUs with ACPI EC disabled during thaw transitions from Bjørn Mork. - PM core fixes and cleanups from Ben Dooks, Leonardo Potenza, Ulf Hansson. - PNP subsystem fixes and cleanups from Dmitry Torokhov, Levente Kurusa, Rashika Kheria. - New tool for profiling system suspend from Todd E Brandt and a cpupower tool cleanup from One Thousand Gnomes. / -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAABCAAGBQJS3a1eAAoJEILEb/54YlRxnTgP/iGawvgjKWm6Qqp7WSIvd5gQ zZ6q75C6Pc/W2fq1+OzVGnpCF8WYFy+nFDAXOvUHjIXuoxSwFcuW5l4aMckgl/0a TXEWe9MJrCHHRfDApfFacCJ44U02bjJAD5vTyL/hKA+IHeinq4WCSojryYC+8jU0 cBrUIV0aNH8r5JR2WJNAyv/U29rXsDUOu0I4qTqZ4YaZT6AignMjtLXn1e9AH1Pn DPZphTIo/HMnb+kgBOjt4snMk+ahVO9eCOxh/hH8ecnWExw9WynXoU5Nsna0tSZs ssyHC7BYexD3oYsG8D52cFUpp4FCsJ0nFQNa2kw0LY+0FBNay43LySisKYHZPXEs 2WpESDv+/t7yhtnrvM+TtA7aBheKm2XMWGFSu/aERLE17jIidOkXKH5Y7ryYLNf/ uyRKxNS0NcZWZ0G+/wuY02jQYNkfYz3k/nTr8BAUItRBjdporGIRNEnR9gPzgCUC uQhjXWMPulqubr8xbyefPWHTEzU2nvbXwTUWGjrBxSy8zkyy5arfqizUj+VG6afT NsboANoMHa9b+xdzigSFdA3nbVK6xBjtU6Ywntk9TIpODKF5NgfARx0H+oSH+Zrj 32bMzgZtHw/lAbYsnQ9OnTY6AEWQYt6NMuVbTiLXrMHhM3nWwfg/XoN4nZqs6jPo IYvE6WhQZU6L6fptGHFC =dRf6 -----END PGP SIGNATURE----- Merge tag 'pm+acpi-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI and power management updates from Rafael Wysocki: "As far as the number of commits goes, the top spot belongs to ACPI this time with cpufreq in the second position and a handful of PM core, PNP and cpuidle updates. They are fixes and cleanups mostly, as usual, with a couple of new features in the mix. The most visible change is probably that we will create struct acpi_device objects (visible in sysfs) for all devices represented in the ACPI tables regardless of their status and there will be a new sysfs attribute under those objects allowing user space to check that status via _STA. Consequently, ACPI device eject or generally hot-removal will not delete those objects, unless the table containing the corresponding namespace nodes is unloaded, which is extremely rare. Also ACPI container hotplug will be handled quite a bit differently and cpufreq will support CPU boost ("turbo") generically and not only in the acpi-cpufreq driver. Specifics: - ACPI core changes to make it create a struct acpi_device object for every device represented in the ACPI tables during all namespace scans regardless of the current status of that device. In accordance with this, ACPI hotplug operations will not delete those objects, unless the underlying ACPI tables go away. - On top of the above, new sysfs attribute for ACPI device objects allowing user space to check device status by triggering the execution of _STA for its ACPI object. From Srinivas Pandruvada. - ACPI core hotplug changes reducing code duplication, integrating the PCI root hotplug with the core and reworking container hotplug. - ACPI core simplifications making it use ACPI_COMPANION() in the code "glueing" ACPI device objects to "physical" devices. - ACPICA update to upstream version 20131218. This adds support for the DBG2 and PCCT tables to ACPICA, fixes some bugs and improves debug facilities. From Bob Moore, Lv Zheng and Betty Dall. - Init code change to carry out the early ACPI initialization earlier. That should allow us to use ACPI during the timekeeping initialization and possibly to simplify the EFI initialization too. From Chun-Yi Lee. - Clenups of the inclusions of ACPI headers in many places all over from Lv Zheng and Rashika Kheria (work in progress). - New helper for ACPI _DSM execution and rework of the code in drivers that uses _DSM to execute it via the new helper. From Jiang Liu. - New Win8 OSI blacklist entries from Takashi Iwai. - Assorted ACPI fixes and cleanups from Al Stone, Emil Goode, Hanjun Guo, Lan Tianyu, Masanari Iida, Oliver Neukum, Prarit Bhargava, Rashika Kheria, Tang Chen, Zhang Rui. - intel_pstate driver updates, including proper Baytrail support, from Dirk Brandewie and intel_pstate documentation from Ramkumar Ramachandra. - Generic CPU boost ("turbo") support for cpufreq from Lukasz Majewski. - powernow-k6 cpufreq driver fixes from Mikulas Patocka. - cpufreq core fixes and cleanups from Viresh Kumar, Jane Li, Mark Brown. - Assorted cpufreq drivers fixes and cleanups from Anson Huang, John Tobias, Paul Bolle, Paul Walmsley, Sachin Kamat, Shawn Guo, Viresh Kumar. - cpuidle cleanups from Bartlomiej Zolnierkiewicz. - Support for hibernation APM events from Bin Shi. - Hibernation fix to avoid bringing up nonboot CPUs with ACPI EC disabled during thaw transitions from Bjørn Mork. - PM core fixes and cleanups from Ben Dooks, Leonardo Potenza, Ulf Hansson. - PNP subsystem fixes and cleanups from Dmitry Torokhov, Levente Kurusa, Rashika Kheria. - New tool for profiling system suspend from Todd E Brandt and a cpupower tool cleanup from One Thousand Gnomes" * tag 'pm+acpi-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (153 commits) thermal: exynos: boost: Automatic enable/disable of BOOST feature (at Exynos4412) cpufreq: exynos4x12: Change L0 driver data to CPUFREQ_BOOST_FREQ Documentation: cpufreq / boost: Update BOOST documentation cpufreq: exynos: Extend Exynos cpufreq driver to support boost cpufreq / boost: Kconfig: Support for software-managed BOOST acpi-cpufreq: Adjust the code to use the common boost attribute cpufreq: Add boost frequency support in core intel_pstate: Add trace point to report internal state. cpufreq: introduce cpufreq_generic_get() routine ARM: SA1100: Create dummy clk_get_rate() to avoid build failures cpufreq: stats: create sysfs entries when cpufreq_stats is a module cpufreq: stats: free table and remove sysfs entry in a single routine cpufreq: stats: remove hotplug notifiers cpufreq: stats: handle cpufreq_unregister_driver() and suspend/resume properly cpufreq: speedstep: remove unused speedstep_get_state platform: introduce OF style 'modalias' support for platform bus PM / tools: new tool for suspend/resume performance optimization ACPI: fix module autoloading for ACPI enumerated devices ACPI: add module autoloading support for ACPI enumerated devices ACPI: fix create_modalias() return value handling ... |
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Linus Torvalds | 3aacd625f2 |
Merge branch 'akpm' (incoming from Andrew)
Merge second patch-bomb from Andrew Morton: - various misc bits - the rest of MM - add generic fixmap.h, use it - backlight updates - dynamic_debug updates - printk() updates - checkpatch updates - binfmt_elf - ramfs - init/ - autofs4 - drivers/rtc - nilfs - hfsplus - Documentation/ - coredump - procfs - fork - exec - kexec - kdump - partitions - rapidio - rbtree - userns - memstick - w1 - decompressors * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (197 commits) lib/decompress_unlz4.c: always set an error return code on failures romfs: fix returm err while getting inode in fill_super drivers/w1/masters/w1-gpio.c: add strong pullup emulation drivers/memstick/host/rtsx_pci_ms.c: fix ms card data transfer bug userns: relax the posix_acl_valid() checks arch/sh/kernel/dwarf.c: use rbtree postorder iteration helper instead of solution using repeated rb_erase() fs-ext3-use-rbtree-postorder-iteration-helper-instead-of-opencoding-fix fs/ext3: use rbtree postorder iteration helper instead of opencoding fs/jffs2: use rbtree postorder iteration helper instead of opencoding fs/ext4: use rbtree postorder iteration helper instead of opencoding fs/ubifs: use rbtree postorder iteration helper instead of opencoding net/netfilter/ipset/ip_set_hash_netiface.c: use rbtree postorder iteration instead of opencoding rbtree/test: test rbtree_postorder_for_each_entry_safe() rbtree/test: move rb_node to the middle of the test struct rapidio: add modular rapidio core build into powerpc and mips branches partitions/efi: complete documentation of gpt kernel param purpose kdump: add /sys/kernel/vmcoreinfo ABI documentation kdump: fix exported size of vmcoreinfo note kexec: add sysctl to disable kexec_load fs/exec.c: call arch_pick_mmap_layout() only once ... |
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Linus Torvalds | 6dd9158ae8 |
Merge git://git.infradead.org/users/eparis/audit
Pull audit update from Eric Paris: "Again we stayed pretty well contained inside the audit system. Venturing out was fixing a couple of function prototypes which were inconsistent (didn't hurt anything, but we used the same value as an int, uint, u32, and I think even a long in a couple of places). We also made a couple of minor changes to when a couple of LSMs called the audit system. We hoped to add aarch64 audit support this go round, but it wasn't ready. I'm disappearing on vacation on Thursday. I should have internet access, but it'll be spotty. If anything goes wrong please be sure to cc rgb@redhat.com. He'll make fixing things his top priority" * git://git.infradead.org/users/eparis/audit: (50 commits) audit: whitespace fix in kernel-parameters.txt audit: fix location of __net_initdata for audit_net_ops audit: remove pr_info for every network namespace audit: Modify a set of system calls in audit class definitions audit: Convert int limit uses to u32 audit: Use more current logging style audit: Use hex_byte_pack_upper audit: correct a type mismatch in audit_syscall_exit() audit: reorder AUDIT_TTY_SET arguments audit: rework AUDIT_TTY_SET to only grab spin_lock once audit: remove needless switch in AUDIT_SET audit: use define's for audit version audit: documentation of audit= kernel parameter audit: wait_for_auditd rework for readability audit: update MAINTAINERS audit: log task info on feature change audit: fix incorrect set of audit_sock audit: print error message when fail to create audit socket audit: fix dangling keywords in audit_log_set_loginuid() output audit: log on errors from filter user rules ... |
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Davidlohr Bueso | 6c5de79ba2 |
partitions/efi: complete documentation of gpt kernel param purpose
The usage of the 'gpt' kernel parameter is twofold: (i) skip any mbr integrity checks and (ii) enable the backup GPT header to be used in situations where the primary one is corrupted. This last "feature" is not obvious and needs to be properly documented in the kernel-parameters document. Addresses https://bugzilla.kernel.org/show_bug.cgi?id=63591 Signed-off-by: Davidlohr Bueso <davidlohr@hp.com> Cc: Matt Domsch <Matt_Domsch@dell.com> Cc: Matt Fleming <matt.fleming@intel.com> Cc: "Chandramouleeswaran,Aswin" <aswin@hp.com> Cc: Chris Murphy <bugzilla@colorremedies.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Xishi Qiu | c3ac14b267 |
doc/kmemcheck: add kmemcheck to kernel-parameters
Add "kmemcheck=xx" to Documentation/kernel-parameters.txt. Signed-off-by: Xishi Qiu <qiuxishi@huawei.com> Cc: Vegard Nossum <vegardno@ifi.uio.no> Cc: Pekka Enberg <penberg@kernel.org> Cc: Rob Landley <rob@landley.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linus Torvalds | bb1281f2aa |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull trivial tree updates from Jiri Kosina: "Usual rocket science stuff from trivial.git" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits) neighbour.h: fix comment sched: Fix warning on make htmldocs caused by wait.h slab: struct kmem_cache is protected by slab_mutex doc: Fix typo in USB Gadget Documentation of/Kconfig: Spelling s/one/once/ mkregtable: Fix sscanf handling lp5523, lp8501: comment improvements thermal: rcar: comment spelling treewide: fix comments and printk msgs IXP4xx: remove '1 &&' from a condition check in ixp4xx_restart() Documentation: update /proc/uptime field description Documentation: Fix size parameter for snprintf arm: fix comment header and macro name asm-generic: uaccess: Spelling s/a ny/any/ mtd: onenand: fix comment header doc: driver-model/platform.txt: fix a typo drivers: fix typo in DEVTMPFS_MOUNT Kconfig help text doc: Fix typo (acces_process_vm -> access_process_vm) treewide: Fix typos in printk drivers/gpu/drm/qxl/Kconfig: reformat the help text ... |
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Linus Torvalds | f4bcd8ccdd |
Merge branch 'x86-kaslr-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 kernel address space randomization support from Peter Anvin: "This enables kernel address space randomization for x86" * 'x86-kaslr-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86, kaslr: Clarify RANDOMIZE_BASE_MAX_OFFSET x86, kaslr: Remove unused including <linux/version.h> x86, kaslr: Use char array to gain sizeof sanity x86, kaslr: Add a circular multiply for better bit diffusion x86, kaslr: Mix entropy sources together as needed x86/relocs: Add percpu fixup for GNU ld 2.23 x86, boot: Rename get_flags() and check_flags() to *_cpuflags() x86, kaslr: Raise the maximum virtual address to -1 GiB on x86_64 x86, kaslr: Report kernel offset on panic x86, kaslr: Select random position from e820 maps x86, kaslr: Provide randomness functions x86, kaslr: Return location from decompress_kernel x86, boot: Move CPU flags out of cpucheck x86, relocs: Add more per-cpu gold special cases |
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Linus Torvalds | fab5669d55 |
Merge branch 'x86-ras-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 RAS changes from Ingo Molnar: - SCI reporting for other error types not only correctable ones - GHES cleanups - Add the functionality to override error reporting agents as some machines are sporting a new extended error logging capability which, if done properly in the BIOS, makes a corresponding EDAC module redundant - PCIe AER tracepoint severity levels fix - Error path correction for the mce device init - MCE timer fix - Add more flexibility to the error injection (EINJ) debugfs interface * 'x86-ras-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86, mce: Fix mce_start_timer semantics ACPI, APEI, GHES: Cleanup ghes memory error handling ACPI, APEI: Cleanup alignment-aware accesses ACPI, APEI, GHES: Do not report only correctable errors with SCI ACPI, APEI, EINJ: Changes to the ACPI/APEI/EINJ debugfs interface ACPI, eMCA: Combine eMCA/EDAC event reporting priority EDAC, sb_edac: Modify H/W event reporting policy EDAC: Add an edac_report parameter to EDAC PCI, AER: Fix severity usage in aer trace event x86, mce: Call put_device on device_register failure |
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Linus Torvalds | 972d5e7e5b |
Merge branch 'x86-efi-kexec-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 EFI changes from Ingo Molnar: "This consists of two main parts: - New static EFI runtime services virtual mapping layout which is groundwork for kexec support on EFI (Borislav Petkov) - EFI kexec support itself (Dave Young)" * 'x86-efi-kexec-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits) x86/efi: parse_efi_setup() build fix x86: ksysfs.c build fix x86/efi: Delete superfluous global variables x86: Reserve setup_data ranges late after parsing memmap cmdline x86: Export x86 boot_params to sysfs x86: Add xloadflags bit for EFI runtime support on kexec x86/efi: Pass necessary EFI data for kexec via setup_data efi: Export EFI runtime memory mapping to sysfs efi: Export more EFI table variables to sysfs x86/efi: Cleanup efi_enter_virtual_mode() function x86/efi: Fix off-by-one bug in EFI Boot Services reservation x86/efi: Add a wrapper function efi_map_region_fixed() x86/efi: Remove unused variables in __map_region() x86/efi: Check krealloc return value x86/efi: Runtime services virtual mapping x86/mm/cpa: Map in an arbitrary pgd x86/mm/pageattr: Add last levels of error path x86/mm/pageattr: Add a PUD error unwinding path x86/mm/pageattr: Add a PTE pagetable populating function x86/mm/pageattr: Add a PMD pagetable populating function ... |
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Linus Torvalds | 1a7dbbcc8c |
Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86/apic changes from Ingo Molnar: "Two main changes: - improve local APIC Error Status Register reporting robustness - add the 'disable_cpu_apicid=x' boot parameter for kexec booting" * 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86, apic: Make disabled_cpu_apicid static read_mostly, fix typos x86, apic, kexec: Add disable_cpu_apicid kernel parameter x86/apic: Read Error Status Register correctly |
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Linus Torvalds | a693c46e14 |
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU updates from Ingo Molnar: - add RCU torture scripts/tooling - static analysis improvements - update RCU documentation - miscellaneous fixes * 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (52 commits) rcu: Remove "extern" from function declarations in kernel/rcu/rcu.h rcu: Remove "extern" from function declarations in include/linux/*rcu*.h rcu/torture: Dynamically allocate SRCU output buffer to avoid overflow rcu: Don't activate RCU core on NO_HZ_FULL CPUs rcu: Warn on allegedly impossible rcu_read_unlock_special() from irq rcu: Add an RCU_INITIALIZER for global RCU-protected pointers rcu: Make rcu_assign_pointer's assignment volatile and type-safe bonding: Use RCU_INIT_POINTER() for better overhead and for sparse rcu: Add comment on evaluate-once properties of rcu_assign_pointer(). rcu: Provide better diagnostics for blocking in RCU callback functions rcu: Improve SRCU's grace-period comments rcu: Fix CONFIG_RCU_FANOUT_EXACT for odd fanout/leaf values rcu: Fix coccinelle warnings rcutorture: Stop tracking FSF's postal address rcutorture: Move checkarg to functions.sh rcutorture: Flag errors and warnings with color coding rcutorture: Record results from repeated runs of the same test scenario rcutorture: Test summary at end of run with less chattiness rcutorture: Update comment in kvm.sh listing typical RCU trace events rcutorture: Add tracing-enabled version of TREE08 ... |