Commit Graph

662299 Commits

Author SHA1 Message Date
Sean Young 5df62771c5 [media] rc: protocol is not set on register for raw IR devices
ir_raw_event_register() sets up change_protocol(), and without that set,
rc_setup_rx_device() does not set the protocol for the device on register.

The standard udev rules run ir-keytable, which writes to the protocols
file again, which hides this problem.

Fixes: 7ff2c2b ("[media] rc-main: split setup and unregister functions")

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-03-03 07:06:59 -03:00
Sean Young 413808685d [media] rc: raw decoder for keymap protocol is not loaded on register
When the protocol is set via the sysfs protocols attribute, the
decoder is loaded. However, when it is not when a device is first
plugged in or registered.

Fixes: acc1c3c ("[media] media: rc: load decoder modules on-demand")

Signed-off-by: Sean Young <sean@mess.org>
Cc: <stable@vger.kernel.org> # v4.5+
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-03-03 07:06:58 -03:00
Heiner Kallweit c1305a4072 [media] rc: nuvoton: fix deadlock in nvt_write_wakeup_codes
nvt_write_wakeup_codes acquires the same lock as the ISR but doesn't
disable interrupts on the local CPU. This caused the following
deadlock. Fix this by using spin_lock_irqsave.

[  432.362008] ================================
[  432.362074] WARNING: inconsistent lock state
[  432.362144] 4.10.0-rc7-next-20170210 #1 Not tainted
[  432.362219] --------------------------------
[  432.362286] inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage.
[  432.362379] swapper/0/0 [HC1[1]:SC0[0]:HE0:SE1] takes:
[  432.362457]  (&(&nvt->lock)->rlock){?.+...}, at: [<ffffffffa016b17d>] nvt_cir_isr+0x2d/0x520 [nuvoton_cir]
[  432.362611] {HARDIRQ-ON-W} state was registered at:
[  432.362686]
[  432.362698] [<ffffffff810adb7c>] __lock_acquire+0x5dc/0x1260
[  432.362812]
[  432.362817] [<ffffffff810aec29>] lock_acquire+0xe9/0x1d0
[  432.362927]
[  432.362934] [<ffffffff81609f63>] _raw_spin_lock+0x33/0x50
[  432.363045]
[  432.363051] [<ffffffffa016b822>] nvt_write_wakeup_codes.isra.12+0x22/0xe0 [nuvoton_cir]
[  432.363193]
[  432.363199] [<ffffffffa016b9bf>] wakeup_data_store+0xdf/0xf0 [nuvoton_cir]
[  432.363327]
[  432.363333] [<ffffffff81484223>] dev_attr_store+0x13/0x20
[  432.363441]
[  432.363449] [<ffffffff81232450>] sysfs_kf_write+0x40/0x50
[  432.363558]
[  432.363564] [<ffffffff81231640>] kernfs_fop_write+0x150/0x1e0
[  432.363676]
[  432.363685] [<ffffffff811b36a3>] __vfs_write+0x23/0x120
[  432.363791]
[  432.363798] [<ffffffff811b4d53>] vfs_write+0xc3/0x1e0
[  432.363902]
[  432.363909] [<ffffffff811b6124>] SyS_write+0x44/0xa0
[  432.364012]
[  432.364021] [<ffffffff81002c47>] do_syscall_64+0x57/0x140
[  432.364129]
[  432.364135] [<ffffffff8160a9e4>] return_from_SYSCALL_64+0x0/0x7a
[  432.364252] irq event stamp: 415118
[  432.364313] hardirqs last  enabled at (415115): [<ffffffff814fd2eb>] cpuidle_enter_state+0x11b/0x370
[  432.364445] hardirqs last disabled at (415116): [<ffffffff8160b2cb>] common_interrupt+0x8b/0x90
[  432.364573] softirqs last  enabled at (415118): [<ffffffff8106157c>] _local_bh_enable+0x1c/0x50
[  432.364699] softirqs last disabled at (415117): [<ffffffff810629a3>] irq_enter+0x43/0x60
[  432.364814]
               other info that might help us debug this:
[  432.364909]  Possible unsafe locking scenario:

[  432.367821]        CPU0
[  432.370645]        ----
[  432.373432]   lock(&(&nvt->lock)->rlock);
[  432.376228]   <Interrupt>
[  432.378982]     lock(&(&nvt->lock)->rlock);
[  432.381757]
                *** DEADLOCK ***

[  432.389888] no locks held by swapper/0/0.
[  432.392574]
               stack backtrace:
[  432.397774] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.10.0-rc7-next-20170210 #1
[  432.400375] Hardware name: ZOTAC ZBOX-CI321NANO/ZBOX-CI321NANO, BIOS B246P105 06/01/2015
[  432.403023] Call Trace:
[  432.405636]  <IRQ>
[  432.408208]  dump_stack+0x68/0x93
[  432.410775]  print_usage_bug+0x1dd/0x1f0
[  432.413334]  mark_lock+0x559/0x5c0
[  432.415871]  ? print_shortest_lock_dependencies+0x1a0/0x1a0
[  432.418431]  __lock_acquire+0x6b1/0x1260
[  432.420941]  lock_acquire+0xe9/0x1d0
[  432.423396]  ? nvt_cir_isr+0x2d/0x520 [nuvoton_cir]
[  432.425844]  _raw_spin_lock+0x33/0x50
[  432.428252]  ? nvt_cir_isr+0x2d/0x520 [nuvoton_cir]
[  432.430670]  nvt_cir_isr+0x2d/0x520 [nuvoton_cir]
[  432.433085]  __handle_irq_event_percpu+0x43/0x330
[  432.435493]  handle_irq_event_percpu+0x1e/0x50
[  432.437884]  handle_irq_event+0x34/0x60
[  432.440236]  handle_edge_irq+0x6a/0x150
[  432.442561]  handle_irq+0x15/0x20
[  432.444854]  do_IRQ+0x57/0x110
[  432.447115]  common_interrupt+0x90/0x90
[  432.449380] RIP: 0010:cpuidle_enter_state+0x120/0x370
[  432.451653] RSP: 0018:ffffffff81c03dd8 EFLAGS: 00000206 ORIG_RAX: ffffffffffffffcc
[  432.453994] RAX: ffffffff81c14500 RBX: 0000000000000008 RCX: 00000064aac6f2d2
[  432.456349] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff81c14500
[  432.458704] RBP: ffffffff81c03e18 R08: cccccccccccccccd R09: 0000000000000018
[  432.461072] R10: 0000000000000000 R11: 0000000000000000 R12: ffff880100a21260
[  432.463450] R13: ffffffff81c7e6f8 R14: 0000000000000008 R15: ffffffff81c7e6e0
[  432.465819]  </IRQ>
[  432.468104]  ? cpuidle_enter_state+0x11b/0x370
[  432.470413]  cpuidle_enter+0x12/0x20
[  432.472698]  call_cpuidle+0x1e/0x40
[  432.474967]  do_idle+0xe3/0x1c0
[  432.477172]  cpu_startup_entry+0x18/0x20
[  432.479376]  rest_init+0x130/0x140
[  432.481565]  start_kernel+0x3cc/0x3d9
[  432.483750]  x86_64_start_reservations+0x2a/0x2c
[  432.485980]  x86_64_start_kernel+0x178/0x18b
[  432.488222]  start_cpu+0x14/0x14
[  432.490453]  ? start_cpu+0x14/0x14

Fixes: 97c129747a "[media] rc: nuvoton-cir: Add support wakeup via sysfs filter callback"

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-03-03 07:06:57 -03:00
Sean Young db5b15b74e [media] lirc: fix dead lock between open and wakeup_filter
The locking in lirc needs improvement, but for now just fix this potential
deadlock.

======================================================
[ INFO: possible circular locking dependency detected ]
4.10.0-rc1+ #1 Not tainted
-------------------------------------------------------
bash/2502 is trying to acquire lock:
 (ir_raw_handler_lock){+.+.+.}, at: [<ffffffffc06f6a5e>] ir_raw_encode_scancode+0x3e/0xb0 [rc_core]

               but task is already holding lock:
 (&dev->lock){+.+.+.}, at: [<ffffffffc06f511f>] store_filter+0x9f/0x240 [rc_core]

               which lock already depends on the new lock.

               the existing dependency chain (in reverse order) is:

               -> #2 (&dev->lock){+.+.+.}:

[<ffffffffa110adad>] lock_acquire+0xfd/0x200
[<ffffffffa1921327>] mutex_lock_nested+0x77/0x6d0
[<ffffffffc06f436a>] rc_open+0x2a/0x80 [rc_core]
[<ffffffffc07114ca>] lirc_dev_fop_open+0xda/0x1e0 [lirc_dev]
[<ffffffffa12975e0>] chrdev_open+0xb0/0x210
[<ffffffffa128eb5a>] do_dentry_open+0x20a/0x2f0
[<ffffffffa128ffcc>] vfs_open+0x4c/0x80
[<ffffffffa12a35ec>] path_openat+0x5bc/0xc00
[<ffffffffa12a5271>] do_filp_open+0x91/0x100
[<ffffffffa12903f0>] do_sys_open+0x130/0x220
[<ffffffffa12904fe>] SyS_open+0x1e/0x20
[<ffffffffa19278c1>] entry_SYSCALL_64_fastpath+0x1f/0xc2
               -> #1 (lirc_dev_lock){+.+.+.}:
[<ffffffffa110adad>] lock_acquire+0xfd/0x200
[<ffffffffa1921327>] mutex_lock_nested+0x77/0x6d0
[<ffffffffc0711f47>] lirc_register_driver+0x67/0x59b [lirc_dev]
[<ffffffffc06db7f4>] ir_lirc_register+0x1f4/0x260 [ir_lirc_codec]
[<ffffffffc06f6cac>] ir_raw_handler_register+0x7c/0xb0 [rc_core]
[<ffffffffc0398010>] 0xffffffffc0398010
[<ffffffffa1002192>] do_one_initcall+0x52/0x1b0
[<ffffffffa11ef5c8>] do_init_module+0x5f/0x1fa
[<ffffffffa11566b5>] load_module+0x2675/0x2b00
[<ffffffffa1156dcf>] SYSC_finit_module+0xdf/0x110
[<ffffffffa1156e1e>] SyS_finit_module+0xe/0x10
[<ffffffffa1003f5c>] do_syscall_64+0x6c/0x1f0
[<ffffffffa1927989>] return_from_SYSCALL_64+0x0/0x7a
               -> #0 (ir_raw_handler_lock){+.+.+.}:
[<ffffffffa110a7b7>] __lock_acquire+0x10f7/0x1290
[<ffffffffa110adad>] lock_acquire+0xfd/0x200
[<ffffffffa1921327>] mutex_lock_nested+0x77/0x6d0
[<ffffffffc06f6a5e>] ir_raw_encode_scancode+0x3e/0xb0 [rc_core]
[<ffffffffc0b0f492>] loop_set_wakeup_filter+0x62/0xbd [rc_loopback]
[<ffffffffc06f522a>] store_filter+0x1aa/0x240 [rc_core]
[<ffffffffa15e46f8>] dev_attr_store+0x18/0x30
[<ffffffffa13318e5>] sysfs_kf_write+0x45/0x60
[<ffffffffa1330b55>] kernfs_fop_write+0x155/0x1e0
[<ffffffffa1290797>] __vfs_write+0x37/0x160
[<ffffffffa12921f8>] vfs_write+0xc8/0x1e0
[<ffffffffa12936e8>] SyS_write+0x58/0xc0
[<ffffffffa19278c1>] entry_SYSCALL_64_fastpath+0x1f/0xc2

               other info that might help us debug this:

Chain exists of:
                 ir_raw_handler_lock --> lirc_dev_lock --> &dev->lock

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&dev->lock);
                               lock(lirc_dev_lock);
                               lock(&dev->lock);
  lock(ir_raw_handler_lock);

                *** DEADLOCK ***

4 locks held by bash/2502:
 #0:  (sb_writers#4){.+.+.+}, at: [<ffffffffa12922c5>] vfs_write+0x195/0x1e0
 #1:  (&of->mutex){+.+.+.}, at: [<ffffffffa1330b1f>] kernfs_fop_write+0x11f/0x1e0
 #2:  (s_active#215){.+.+.+}, at: [<ffffffffa1330b28>] kernfs_fop_write+0x128/0x1e0
 #3:  (&dev->lock){+.+.+.}, at: [<ffffffffc06f511f>] store_filter+0x9f/0x240 [rc_core]

               stack backtrace:
CPU: 3 PID: 2502 Comm: bash Not tainted 4.10.0-rc1+ #1
Hardware name:                  /DG45ID, BIOS IDG4510H.86A.0135.2011.0225.1100 02/25/2011
Call Trace:
 dump_stack+0x86/0xc3
 print_circular_bug+0x1be/0x210
 __lock_acquire+0x10f7/0x1290
 lock_acquire+0xfd/0x200
 ? ir_raw_encode_scancode+0x3e/0xb0 [rc_core]
 ? ir_raw_encode_scancode+0x3e/0xb0 [rc_core]
 mutex_lock_nested+0x77/0x6d0
 ? ir_raw_encode_scancode+0x3e/0xb0 [rc_core]
 ? loop_set_wakeup_filter+0x44/0xbd [rc_loopback]
 ir_raw_encode_scancode+0x3e/0xb0 [rc_core]
 loop_set_wakeup_filter+0x62/0xbd [rc_loopback]
 ? loop_set_tx_duty_cycle+0x70/0x70 [rc_loopback]
 store_filter+0x1aa/0x240 [rc_core]
 dev_attr_store+0x18/0x30
 sysfs_kf_write+0x45/0x60
 kernfs_fop_write+0x155/0x1e0
 __vfs_write+0x37/0x160
 ? rcu_read_lock_sched_held+0x4a/0x80
 ? rcu_sync_lockdep_assert+0x2f/0x60
 ? __sb_start_write+0x10c/0x220
 ? vfs_write+0x195/0x1e0
 ? security_file_permission+0x3b/0xc0
 vfs_write+0xc8/0x1e0
 SyS_write+0x58/0xc0
 entry_SYSCALL_64_fastpath+0x1f/0xc2

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-03-03 07:06:57 -03:00
Qi Hou 2e1e4949f9 i2c: add missing of_node_put in i2c_mux_del_adapters
Refcount of of_node is increased with of_node_get() in i2c_mux_add_adapter().
It must be decreased with of_node_put() in i2c_mux_del_adapters().

Cc: stable@vger.kernel.org
Signed-off-by: Qi Hou <qi.hou@windriver.com>
Reviewed-by: Zhang Xiao <xiao.zhang@windriver.com>
Signed-off-by: Peter Rosin <peda@axentia.se>
2017-03-03 10:50:28 +01:00
Sean Young 0265634eb9 [media] serial_ir: ensure we're ready to receive interrupts
When the interrupt requested with devm_request_irq(), serial_ir.rcdev
is still null so will cause null deference if the irq handler is called
early on.

Also ensure that timeout_timer is setup.

Link: http://lkml.kernel.org/r/CA+55aFxsh2uF8gi5sN_guY3Z+tiLv7LpJYKBw+y8vqLzp+TsnQ@mail.gmail.com

[mchehab@s-opensource.com: moved serial_ir_probe() back to its original place]

Cc: <stable@vger.kernel.org> # 4.10
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-03-03 06:42:41 -03:00
Sachin Prabhu ef65aaede2 smb2: Enforce sec= mount option
If the security type specified using a mount option is not supported,
the SMB2 session setup code changes the security type to RawNTLMSSP. We
should instead fail the mount and return an error.

The patch changes the code for SMB2 to make it similar to the code used
for SMB1. Like in SMB1, we now use the global security flags to select
the security method to be used when no security method is specified and
to return an error when the requested auth method is not available.

For SMB2, we also use ntlmv2 as a synonym for nltmssp.

Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>
Acked-by: Pavel Shilovsky <pshilov@microsoft.com>
Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
2017-03-02 23:13:37 -06:00
Steve French 284316dd42 CIFS: Fix sparse warnings
Fix two minor sparse compile check warnings

Signed-off-by: Steve French <steve.french@primarydata.com>
Acked-by: Pavel Shilovsky <pshilov@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
2017-03-02 23:11:54 -06:00
Alexander Duyck c74042f3b3 ixgbe: Limit use of 2K buffers on architectures with 256B or larger cache lines
On architectures that have a cache line size larger than 64 Bytes we start
running into issues where the amount of headroom for the frame starts
shrinking.

The size of skb_shared_info on a system with a 64B L1 cache line size is
320.  This increases to 384 with a 128B cache line, and 512 with a 256B
cache line.

In addition the NET_SKB_PAD value increases as well consistent with the
cache line size.  As a result when we get to a 256B cache line as seen on
the s390 we end up 768 bytes used by padding and shared info leaving us
with only 1280 bytes to use for data storage.  On architectures such as
this we should default to using 3K Rx buffers out of a 8K page instead of
trying to do 1.5K buffers out of a 4K page.

To take all of this into account I have added one small check so that we
compare the max_frame to the amount of actual data we can store.  This was
already occurring for igb, but I had overlooked it for ixgbe as it doesn't
have strict limits for 82599 once we enable jumbo frames.  By adding this
check we will automatically enable 3K Rx buffers as soon as the maximum
frame size we can handle drops below the standard Ethernet MTU.

I also went through and fixed one small typo that I found where I had left
an IGB in a variable name due to a copy/paste error.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-03-02 18:03:39 -08:00
David Howells a528d35e8b statx: Add a system call to make enhanced file info available
Add a system call to make extended file information available, including
file creation and some attribute flags where available through the
underlying filesystem.

The getattr inode operation is altered to take two additional arguments: a
u32 request_mask and an unsigned int flags that indicate the
synchronisation mode.  This change is propagated to the vfs_getattr*()
function.

Functions like vfs_stat() are now inline wrappers around new functions
vfs_statx() and vfs_statx_fd() to reduce stack usage.

========
OVERVIEW
========

The idea was initially proposed as a set of xattrs that could be retrieved
with getxattr(), but the general preference proved to be for a new syscall
with an extended stat structure.

A number of requests were gathered for features to be included.  The
following have been included:

 (1) Make the fields a consistent size on all arches and make them large.

 (2) Spare space, request flags and information flags are provided for
     future expansion.

 (3) Better support for the y2038 problem [Arnd Bergmann] (tv_sec is an
     __s64).

 (4) Creation time: The SMB protocol carries the creation time, which could
     be exported by Samba, which will in turn help CIFS make use of
     FS-Cache as that can be used for coherency data (stx_btime).

     This is also specified in NFSv4 as a recommended attribute and could
     be exported by NFSD [Steve French].

 (5) Lightweight stat: Ask for just those details of interest, and allow a
     netfs (such as NFS) to approximate anything not of interest, possibly
     without going to the server [Trond Myklebust, Ulrich Drepper, Andreas
     Dilger] (AT_STATX_DONT_SYNC).

 (6) Heavyweight stat: Force a netfs to go to the server, even if it thinks
     its cached attributes are up to date [Trond Myklebust]
     (AT_STATX_FORCE_SYNC).

And the following have been left out for future extension:

 (7) Data version number: Could be used by userspace NFS servers [Aneesh
     Kumar].

     Can also be used to modify fill_post_wcc() in NFSD which retrieves
     i_version directly, but has just called vfs_getattr().  It could get
     it from the kstat struct if it used vfs_xgetattr() instead.

     (There's disagreement on the exact semantics of a single field, since
     not all filesystems do this the same way).

 (8) BSD stat compatibility: Including more fields from the BSD stat such
     as creation time (st_btime) and inode generation number (st_gen)
     [Jeremy Allison, Bernd Schubert].

 (9) Inode generation number: Useful for FUSE and userspace NFS servers
     [Bernd Schubert].

     (This was asked for but later deemed unnecessary with the
     open-by-handle capability available and caused disagreement as to
     whether it's a security hole or not).

(10) Extra coherency data may be useful in making backups [Andreas Dilger].

     (No particular data were offered, but things like last backup
     timestamp, the data version number and the DOS archive bit would come
     into this category).

(11) Allow the filesystem to indicate what it can/cannot provide: A
     filesystem can now say it doesn't support a standard stat feature if
     that isn't available, so if, for instance, inode numbers or UIDs don't
     exist or are fabricated locally...

     (This requires a separate system call - I have an fsinfo() call idea
     for this).

(12) Store a 16-byte volume ID in the superblock that can be returned in
     struct xstat [Steve French].

     (Deferred to fsinfo).

(13) Include granularity fields in the time data to indicate the
     granularity of each of the times (NFSv4 time_delta) [Steve French].

     (Deferred to fsinfo).

(14) FS_IOC_GETFLAGS value.  These could be translated to BSD's st_flags.
     Note that the Linux IOC flags are a mess and filesystems such as Ext4
     define flags that aren't in linux/fs.h, so translation in the kernel
     may be a necessity (or, possibly, we provide the filesystem type too).

     (Some attributes are made available in stx_attributes, but the general
     feeling was that the IOC flags were to ext[234]-specific and shouldn't
     be exposed through statx this way).

(15) Mask of features available on file (eg: ACLs, seclabel) [Brad Boyer,
     Michael Kerrisk].

     (Deferred, probably to fsinfo.  Finding out if there's an ACL or
     seclabal might require extra filesystem operations).

(16) Femtosecond-resolution timestamps [Dave Chinner].

     (A __reserved field has been left in the statx_timestamp struct for
     this - if there proves to be a need).

(17) A set multiple attributes syscall to go with this.

===============
NEW SYSTEM CALL
===============

The new system call is:

	int ret = statx(int dfd,
			const char *filename,
			unsigned int flags,
			unsigned int mask,
			struct statx *buffer);

The dfd, filename and flags parameters indicate the file to query, in a
similar way to fstatat().  There is no equivalent of lstat() as that can be
emulated with statx() by passing AT_SYMLINK_NOFOLLOW in flags.  There is
also no equivalent of fstat() as that can be emulated by passing a NULL
filename to statx() with the fd of interest in dfd.

Whether or not statx() synchronises the attributes with the backing store
can be controlled by OR'ing a value into the flags argument (this typically
only affects network filesystems):

 (1) AT_STATX_SYNC_AS_STAT tells statx() to behave as stat() does in this
     respect.

 (2) AT_STATX_FORCE_SYNC will require a network filesystem to synchronise
     its attributes with the server - which might require data writeback to
     occur to get the timestamps correct.

 (3) AT_STATX_DONT_SYNC will suppress synchronisation with the server in a
     network filesystem.  The resulting values should be considered
     approximate.

mask is a bitmask indicating the fields in struct statx that are of
interest to the caller.  The user should set this to STATX_BASIC_STATS to
get the basic set returned by stat().  It should be noted that asking for
more information may entail extra I/O operations.

buffer points to the destination for the data.  This must be 256 bytes in
size.

======================
MAIN ATTRIBUTES RECORD
======================

The following structures are defined in which to return the main attribute
set:

	struct statx_timestamp {
		__s64	tv_sec;
		__s32	tv_nsec;
		__s32	__reserved;
	};

	struct statx {
		__u32	stx_mask;
		__u32	stx_blksize;
		__u64	stx_attributes;
		__u32	stx_nlink;
		__u32	stx_uid;
		__u32	stx_gid;
		__u16	stx_mode;
		__u16	__spare0[1];
		__u64	stx_ino;
		__u64	stx_size;
		__u64	stx_blocks;
		__u64	__spare1[1];
		struct statx_timestamp	stx_atime;
		struct statx_timestamp	stx_btime;
		struct statx_timestamp	stx_ctime;
		struct statx_timestamp	stx_mtime;
		__u32	stx_rdev_major;
		__u32	stx_rdev_minor;
		__u32	stx_dev_major;
		__u32	stx_dev_minor;
		__u64	__spare2[14];
	};

The defined bits in request_mask and stx_mask are:

	STATX_TYPE		Want/got stx_mode & S_IFMT
	STATX_MODE		Want/got stx_mode & ~S_IFMT
	STATX_NLINK		Want/got stx_nlink
	STATX_UID		Want/got stx_uid
	STATX_GID		Want/got stx_gid
	STATX_ATIME		Want/got stx_atime{,_ns}
	STATX_MTIME		Want/got stx_mtime{,_ns}
	STATX_CTIME		Want/got stx_ctime{,_ns}
	STATX_INO		Want/got stx_ino
	STATX_SIZE		Want/got stx_size
	STATX_BLOCKS		Want/got stx_blocks
	STATX_BASIC_STATS	[The stuff in the normal stat struct]
	STATX_BTIME		Want/got stx_btime{,_ns}
	STATX_ALL		[All currently available stuff]

stx_btime is the file creation time, stx_mask is a bitmask indicating the
data provided and __spares*[] are where as-yet undefined fields can be
placed.

Time fields are structures with separate seconds and nanoseconds fields
plus a reserved field in case we want to add even finer resolution.  Note
that times will be negative if before 1970; in such a case, the nanosecond
fields will also be negative if not zero.

The bits defined in the stx_attributes field convey information about a
file, how it is accessed, where it is and what it does.  The following
attributes map to FS_*_FL flags and are the same numerical value:

	STATX_ATTR_COMPRESSED		File is compressed by the fs
	STATX_ATTR_IMMUTABLE		File is marked immutable
	STATX_ATTR_APPEND		File is append-only
	STATX_ATTR_NODUMP		File is not to be dumped
	STATX_ATTR_ENCRYPTED		File requires key to decrypt in fs

Within the kernel, the supported flags are listed by:

	KSTAT_ATTR_FS_IOC_FLAGS

[Are any other IOC flags of sufficient general interest to be exposed
through this interface?]

New flags include:

	STATX_ATTR_AUTOMOUNT		Object is an automount trigger

These are for the use of GUI tools that might want to mark files specially,
depending on what they are.

Fields in struct statx come in a number of classes:

 (0) stx_dev_*, stx_blksize.

     These are local system information and are always available.

 (1) stx_mode, stx_nlinks, stx_uid, stx_gid, stx_[amc]time, stx_ino,
     stx_size, stx_blocks.

     These will be returned whether the caller asks for them or not.  The
     corresponding bits in stx_mask will be set to indicate whether they
     actually have valid values.

     If the caller didn't ask for them, then they may be approximated.  For
     example, NFS won't waste any time updating them from the server,
     unless as a byproduct of updating something requested.

     If the values don't actually exist for the underlying object (such as
     UID or GID on a DOS file), then the bit won't be set in the stx_mask,
     even if the caller asked for the value.  In such a case, the returned
     value will be a fabrication.

     Note that there are instances where the type might not be valid, for
     instance Windows reparse points.

 (2) stx_rdev_*.

     This will be set only if stx_mode indicates we're looking at a
     blockdev or a chardev, otherwise will be 0.

 (3) stx_btime.

     Similar to (1), except this will be set to 0 if it doesn't exist.

=======
TESTING
=======

The following test program can be used to test the statx system call:

	samples/statx/test-statx.c

Just compile and run, passing it paths to the files you want to examine.
The file is built automatically if CONFIG_SAMPLES is enabled.

Here's some example output.  Firstly, an NFS directory that crosses to
another FSID.  Note that the AUTOMOUNT attribute is set because transiting
this directory will cause d_automount to be invoked by the VFS.

	[root@andromeda ~]# /tmp/test-statx -A /warthog/data
	statx(/warthog/data) = 0
	results=7ff
	  Size: 4096            Blocks: 8          IO Block: 1048576  directory
	Device: 00:26           Inode: 1703937     Links: 125
	Access: (3777/drwxrwxrwx)  Uid:     0   Gid:  4041
	Access: 2016-11-24 09:02:12.219699527+0000
	Modify: 2016-11-17 10:44:36.225653653+0000
	Change: 2016-11-17 10:44:36.225653653+0000
	Attributes: 0000000000001000 (-------- -------- -------- -------- -------- -------- ---m---- --------)

Secondly, the result of automounting on that directory.

	[root@andromeda ~]# /tmp/test-statx /warthog/data
	statx(/warthog/data) = 0
	results=7ff
	  Size: 4096            Blocks: 8          IO Block: 1048576  directory
	Device: 00:27           Inode: 2           Links: 125
	Access: (3777/drwxrwxrwx)  Uid:     0   Gid:  4041
	Access: 2016-11-24 09:02:12.219699527+0000
	Modify: 2016-11-17 10:44:36.225653653+0000
	Change: 2016-11-17 10:44:36.225653653+0000

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-03-02 20:51:15 -05:00
Linus Torvalds c82be9d224 Power management turbostat utility updates for v4.11-rc1
These update turbostat significantly and in particular:
 
  - Default output is now verbose, --debug is no longer required to
    get all counters.  As a result, some options have been added to
    specify exactly what output is wanted.
  - Added --quiet to skip system configuration output
  - Added --list, --show and --hide parameters
  - Added --cpu parameter
  - Enhanced Baytrail SoC support
  - Added Gemini Lake SoC support
  - Added sysfs C-state columns
 
 Also the symbol definitions in arch/x86/include/asm/intel-family.h
 and arch/x86/include/asm/msr-index.h are updated and the intel_idle
 and intel_pstate drivers are modified to use the updated symbols.
 
 Credits to Len Brown for all of these changes.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iQIcBAABCAAGBQJYuLyNAAoJEILEb/54YlRxEvkQAJsggzpgGrlhrO6KHSm4yC9M
 CqhBVsdeppX1ZTAVPiMk/pcXQYtL5fZ97ELk2So/CjT5Nh3jwDPMA/ux5n3uiob+
 O2BTdtxnpNLxPQPQM1mW7Dr/uAIRlJug9gSMxKDbFSU9Oe3aET58PUdUTs7xaT59
 nbtLxVSvzrdGk/bX6WO4ic+7F2licJLZPfDGhYidnoika8LxD4M+cIO73gFpgqQi
 yoKrTZyLimvneFT0eAUUvHIyKjkJIxeMfslW57uBpz8rW5my+3UwsdpRG4AIVeWc
 wSBlsNqj+TuR4BBiZ2VR2RoHF3qbH/SceI+k864BqyThfyK/g2q/vV/GvLZQCR/R
 yWcajWD9kvLKvnm1D3XYOIQDBeP4l60j3vVwHytSvmaPYjn5Ms3jq6b+2K6zkXMM
 8y3leW/hgw+rGCacdXPrKIlpBykSV7h+TnD2iMxeeDISNkbefWWDe/WB6HncocAg
 HDtKRvU9ntRq6/MlnTKbCFM5c0oCXWRw4QNjDy3AsjJELgeAIwiqpHWMKO6XltFj
 qU/rdyW/BTCuAlIjWVbjooAIJZ268geupeug3zvE3uGzrxT4DaVIo8W1wtJ+XQrt
 By7sOW/gMQ2EcTJQiuFjS/Gz5gOKQ2F8OLCm6T8Prjh6SxrCUAiuIvP0LmxUCa8i
 KMlx+8c9E2f9j+TTt9AP
 =oMZe
 -----END PGP SIGNATURE-----

Merge tag 'pm-turbostat-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull turbostat utility updates from Rafael Wysocki:
 "Power management turbostat utility updates.

  These update turbostat significantly and in particular:

   - default output is now verbose, --debug is no longer required to get
     all counters. As a result, some options have been added to specify
     exactly what output is wanted.

   - added --quiet to skip system configuration output

   - added --list, --show and --hide parameters

   - added --cpu parameter

   - enhanced Baytrail SoC support

   - added Gemini Lake SoC support

   - added sysfs C-state columns

  Also the symbol definitions in arch/x86/include/asm/intel-family.h and
  arch/x86/include/asm/msr-index.h are updated and the intel_idle and
  intel_pstate drivers are modified to use the updated symbols.

  Credits to Len Brown for all of these changes"

* tag 'pm-turbostat-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (44 commits)
  tools/power turbostat: version 17.02.24
  tools/power turbostat: bugfix: --add u32 was printed as u64
  tools/power turbostat: show error on exec
  tools/power turbostat: dump p-state software config
  tools/power turbostat: show package number, even without --debug
  tools/power turbostat: support "--hide C1" etc.
  tools/power turbostat: move --Package and --processor into the --cpu option
  tools/power turbostat: turbostat.8 update
  tools/power turbostat: update --list feature
  tools/power turbostat: use wide columns to display large numbers
  tools/power turbostat: Add --list option to show available header names
  tools/power turbostat: fix zero IRQ count shown in one-shot command mode
  tools/power turbostat: add --cpu parameter
  tools/power turbostat: print sysfs C-state stats
  tools/power turbostat: extend --add option to accept /sys path
  tools/power turbostat: skip unused counters on BDX
  tools/power turbostat: fix decoding for GLM, DNV, SKX turbo-ratio limits
  tools/power turbostat: skip unused counters on SKX
  tools/power turbostat: Denverton: use HW CC1 counter, skip C3, C7
  tools/power turbostat: initial Gemini Lake SOC support
  ...
2017-03-02 17:41:27 -08:00
Linus Torvalds 3f80dd67c3 Additional ACPI update for v4.11-rc1
This fixes an apparent, but actually artificial, resource conflict
 between the ACPI NVS memory region and the ACPI BERT (Boot Error
 Record Table) address range (Huang Ying).
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iQIcBAABCAAGBQJYuLznAAoJEILEb/54YlRxT+oP/jmX2GJ5PkqATzIu5v72uZrF
 mc5vssR9AUWwuuSkVQrPJxNYnjt1j6PrSVbo9cTlzQ+A7OtBiqNk0bMIDxTPfElW
 fdyu9hropSXuFDhBRCPz8ZI68l8be8HyjoLcQr+Og3ni320UNCSe9FzggfJ3Fnp/
 /bm8O5PbQmqSdyXb14C+2APUy4KhFwKVesIX/aESXikISMo3LjMUdaOKS1H0X4jI
 qFUNewPv0J78pz5Hm2oS3a9alh6cbEJH7uhj6kM9zjUFR7XK4sIuqk5HbvT399vc
 KgP/RoRckQPgHKGj+5YucmDmGUy0sy318BPCI3DGoRKSnINahVnwW3JzsRoLtMQg
 b/qjorB7Z7G9K2861xacojaCjMpvAiFmarTpQkqc1VMRTKP7M9rztaTVcskqmyys
 bazQ67cge/jOIXiyvRjzZkXzT8mPLiR2DBka0ZBpy8D1hzgtr8yHJAM6ryn1IS7s
 F4eKRhjatBFecxme7EHBPONhN/qRob3eteUzBkNJdggRSb7+KeTDlWtsBcxjtT+Y
 9rAdTYhMSZC9+dU4HqbTaiKFZDQKXZwJZfcLiS3DaAsZUTqBKoS2QoHzZONNqP6j
 2pi6MQ8Bd8QFK8A3p/uTAY+f99UzFVjwy9n0w9Q+cJEL0dYfCOGRV7AfzdZapZu9
 qmYWilHoj2SI396nGydr
 =bHfS
 -----END PGP SIGNATURE-----

Merge tag 'acpi-extra-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fix from Rafael Wysocki:
 "This fixes an apparent, but actually artificial, resource conflict
  between the ACPI NVS memory region and the ACPI BERT (Boot Error
  Record Table) address range (Huang Ying)"

* tag 'acpi-extra-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: APEI: Fix BERT resources conflict with ACPI NVS area
2017-03-02 17:38:30 -08:00
Linus Torvalds 080e4168c0 More power management updates for v4.11-rc1
- Fix for a cpuidle menu governor problem that started to take an
    unnecessary spinlock after one of the recent updates and that
    did not play well with the RT patch (Rafael Wysocki).
 
  - Fix for the new intel_pstate operation mode switching feature
    added recently that did not reinitialize P-state limits properly
    when switching operation modes (Rafael Wysocki).
 
  - Removal of unused global notifiers from the PM QoS framework
    (Viresh Kumar).
 
  - Generic power domains framework update to make it handle
    asynchronous invocations of PM callbacks in the "noirq" phases
    of system suspend/hibernation correctly (Ulf Hansson).
 
  - Two hibernation core cleanups (Rafael Wysocki).
 
  - intel_idle cleanup related to the sysfs interface (Len Brown).
 
  - Off-by-one bug fix in the OPP (Operating Performance Points)
    framework (Andrzej Hajda).
 
  - OPP framework's documentation fix (Viresh Kumar).
 
  - cpufreq qoriq driver cleanup (Tang Yuantian).
 
  - Fixes for typos in comments in the device runtime PM framework
    (Christophe Jaillet).
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iQIcBAABCAAGBQJYuLeGAAoJEILEb/54YlRxJvcP/0BRmh8Hn4Itx/NIWNg71X6j
 U+v8Pn8T3MP33gCcleLYlgre2JUIAUDmhdK99+UOx+/abhjMhQSaF3HhTOwYaPtQ
 6njoHVS0NnfqUf+x5kp+EpRxBVNucYVbdRTVd1DsHIeLLz/96DFOzb/R7tko/pKx
 pFMWvNdotHLLgXOG1UvdRimwTDlFMffxFzD8Se53LPjRXS0S73A5VWfqZOye44Re
 j3W1AJ0Idgq5uduA6J8x1MWbaxDq1h+j6CSUm05yvqrINzxXwXt0Hv6stCQTo+Gb
 YMdiBd8MujNyAgcchw3jiDQ8Vp+zmfLPcHrfPe//SSefj26eB8LyVNSYelvbUdOz
 cNjvyErva37MmaegCL9QC7WbLM+A7VE6bU6YzDCi/rR8jYMJ51Fb9jGiYb/oimry
 OLlblEekikUsskWv4hGV1JVt5VhmUMlagWtexxn+lMszATcZro0tfXu/vgQWksYs
 noUnwuWJWxvj2aNMsvbzW3HLlTGSmYl2UxJ7IymQQaTDblwF9Kg61rm3+5coUctd
 ifceynDVp9Gju25faYgZ+Dq9+o8ktlOGOHRRPdLIRNJ/T+4tUDnlGkdbPb+Tfn03
 XUIzYCu74U8/oW8gOk6t0WpmWzvxEXNgdirdEIR6y3loYIC0Jr3v4gyD975Eug74
 Hzfrdg7ignAmWV+nf6UY
 =SeUF
 -----END PGP SIGNATURE-----

Merge tag 'pm-extra-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull more power management updates deom Rafael Wysocki:
 "These fix two bugs introduced by recent power management updates (in
  the cpuidle menu governor and intel_pstate) and a few other issues,
  clean up things and remove unused code.

  Specifics:

   - Fix for a cpuidle menu governor problem that started to take an
     unnecessary spinlock after one of the recent updates and that did
     not play well with the RT patch (Rafael Wysocki).

   - Fix for the new intel_pstate operation mode switching feature added
     recently that did not reinitialize P-state limits properly when
     switching operation modes (Rafael Wysocki).

   - Removal of unused global notifiers from the PM QoS framework
     (Viresh Kumar).

   - Generic power domains framework update to make it handle
     asynchronous invocations of PM callbacks in the "noirq" phases of
     system suspend/hibernation correctly (Ulf Hansson).

   - Two hibernation core cleanups (Rafael Wysocki).

   - intel_idle cleanup related to the sysfs interface (Len Brown).

   - Off-by-one bug fix in the OPP (Operating Performance Points)
     framework (Andrzej Hajda).

   - OPP framework's documentation fix (Viresh Kumar).

   - cpufreq qoriq driver cleanup (Tang Yuantian).

   - Fixes for typos in comments in the device runtime PM framework
     (Christophe Jaillet)"

* tag 'pm-extra-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM / OPP: Documentation: Fix opp-microvolt in examples
  intel_idle: stop exposing platform acronyms in sysfs
  cpufreq: intel_pstate: Fix limits issue with operation mode switching
  PM / hibernate: Define pr_fmt() and use pr_*() instead of printk()
  PM / hibernate: Untangle power_down()
  cpuidle: menu: Avoid taking spinlock for accessing QoS values
  PM / QoS: Remove global notifiers
  PM / runtime: Fix some typos
  cpufreq: qoriq: clean up unused code
  PM / OPP: fix off-by-one bug in dev_pm_opp_get_max_volt_latency loop
  PM / Domains: Power off masters immediately in the power off sequence
  PM / Domains: Rename is_async to one_dev_on for genpd_power_off()
  PM / Domains: Move genpd_power_off() above genpd_power_on()
2017-03-02 17:33:52 -08:00
Paolo Abeni d3aa9c9f21 ixgbe: update the rss key on h/w, when ethtool ask for it
Currently ixgbe_set_rxfh() updates the rss_key copy in the driver
memory, but does not push the new value into the h/w. This commit
add a new helper for the latter operation and call it in
ixgbe_set_rxfh(), so that the h/w rss key value can be really
updated via ethtool.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-03-02 17:19:17 -08:00
Ingo Molnar 5eca1c10cb sched/headers: Clean up <linux/sched.h>
Now that <linux/sched.h> dependencies have been sorted out,
do various trivial cleanups:

 - remove unnecessary structure predeclarations
 - fix various typos
 - update comments where necessary
 - remove pointless comments
 - use consistent types
 - tabulate consistently
 - use a consistent comment style
 - clean up the header section a bit
 - use a consistent style of a single field per line
 - remove line-breaks where they make the code look worse
 - etc ...

No change in functionality.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:41 +01:00
Ingo Molnar 7f5f8e8d97 sched/headers: Remove #ifdefs from <linux/sched.h>
We can remove two pairs of #ifdefs by defining structures in a smarter way.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:41 +01:00
Ingo Molnar ee6a3d19f1 sched/headers: Remove the <linux/topology.h> include from <linux/sched.h>
It's used only by a single (rarely used) inline function (task_node(p)),
which we can move to <linux/sched/topology.h>.

( Add <linux/nodemask.h>, because we rely on that. )

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:41 +01:00
Ingo Molnar 283cb90305 sched/headers, hrtimer: Remove the <linux/wait.h> include from <linux/hrtimer.h>
In our quest to simplify <linux/sched.h>'s header dependencies, remove
the <linux/wait.h> inclusion from <linux/hrtimer.h> - which does
not appear to be necessary, as hrtimer.h does not use waitqueues.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:40 +01:00
Ingo Molnar 1a79a72c65 sched/headers, x86/apic: Remove the <linux/pm.h> header inclusion from <asm/apic.h>
We want to simplify <linux/sched.h>'s header dependencies, but one
roadblock to that is <asm/apic.h>'s inclusion of pm.h,
which brings in other, problematic headers.

Remove it, as it appears to be entirely spurious, apic.h does not
actually make use of any PM facilities.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:40 +01:00
Ingo Molnar b2d5bfea2d sched/headers, timers: Remove the <linux/sysctl.h> include from <linux/timer.h>
So we want to simplify <linux/sched.h>'s header dependencies, but one
roadblock of that is <linux/timer.h>'s inclusion of sysctl.h,
which brings in other, problematic headers.

Note that timer.h's inclusion of sysctl.h can be avoided if we
pre-declare ctl_table - so do that.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:39 +01:00
Ingo Molnar 50ff9d1300 sched/headers: Remove <linux/magic.h> from <linux/sched/task_stack.h>
It's not used by any of the scheduler methods, but <linux/sched/task_stack.h>
needs it to pick up STACK_END_MAGIC.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:39 +01:00
Ingo Molnar 5c0d0f3641 sched/headers: Remove <linux/sched.h> from <linux/sched/init.h>
The <linux/sched/init.h> file is a self-contained header and users of
it either don't need <linux/sched.h> - or have already included it.

This reduces the size of the header dependency graph.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:38 +01:00
Ingo Molnar 2c873d55cd sched/core: Remove unused prefetch_stack()
prefetch_stack() is defined by IA64, but not actually used anywhere anymore.

Remove it.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:38 +01:00
Ingo Molnar b68070e146 sched/headers: Remove <linux/rculist.h> from <linux/sched.h>
We don't actually need the full rculist.h header anymore, include
the smaller rcupdate.h header instead.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:38 +01:00
Ingo Molnar 1d1954e038 sched/headers: Remove the 'init_pid_ns' prototype from <linux/sched.h>
pid.h already defines it.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:37 +01:00
Ingo Molnar 192c941451 sched/headers: Remove <linux/signal.h> from <linux/sched.h>
Instead of including the full <linux/signal.h>, only include the types-only
<linux/signal_types.h> header in <linux/sched.h>, to further decouple the
scheduler header from the signal headers.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:37 +01:00
Ingo Molnar cd9c513be3 sched/headers: Remove <linux/rwsem.h> from <linux/sched.h>
This is a stray header that is not needed by anything in sched.h,
so remove it.

Update files that relied on the stray inclusion.

This reduces the size of the header dependency graph.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:36 +01:00
Ingo Molnar fae3c30c2d sched/headers: Remove the runqueue_is_locked() prototype
Remove the runqueue_is_locked() prototype, the function does not exist anymore.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:36 +01:00
Ingo Molnar a906086ef3 sched/headers: Remove <linux/sched.h> from <linux/sched/hotplug.h>
The <linux/sched/hotplug.h> file is a self-contained header and users of
it either don't need <linux/sched.h> - or have already included it.

This reduces the size of the header dependency graph.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:35 +01:00
Ingo Molnar 4f079e98a0 sched/headers: Remove <linux/sched.h> from <linux/sched/debug.h>
The <linux/sched/debug.h> file is a self-contained header and users of
it either don't need <linux/sched.h> - or have already included it.

This reduces the size of the header dependency graph.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:35 +01:00
Ingo Molnar b0145d9b33 sched/headers: Remove <linux/sched.h> from <linux/sched/nohz.h>
The <linux/sched/nohz.h> file is a self-contained header and users of
it either don't need <linux/sched.h> - or have already included it.

This reduces the size of the header dependency graph.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:35 +01:00
Ingo Molnar dc1995392d sched/headers: Remove <linux/sched.h> from <linux/sched/stat.h>
The <linux/sched/stat.h> file is a largely self-contained header and users of
it either don't need <linux/sched.h> - or have already included it.

( Keep the <linux/percpu.h> dependency.)

This reduces the size of the header dependency graph.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:34 +01:00
Ingo Molnar f0a0eb6999 sched/headers: Remove the <linux/gfp.h> include from <linux/sched.h>
This reduces sched.h header dependencies.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:34 +01:00
Ingo Molnar 9c6da18109 sched/headers: Remove <linux/rtmutex.h> from <linux/sched.h>
This reduces header dependencies.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:33 +01:00
Ingo Molnar f780d89a0e sched/headers: Remove <asm/ptrace.h> from <linux/sched.h>
This reduces header dependencies.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:33 +01:00
Ingo Molnar e26512fea5 sched/headers: Remove <linux/cred.h> inclusion from <linux/sched.h>
This reduces header dependencies and speeds up the build.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:32 +01:00
Ingo Molnar 71af2ed5ee kasan, sched/headers: Remove <linux/sched.h> from <linux/kasan.h>
<linux/kasan.h> is a low level header that is included early
in affected kernel headers. But it includes <linux/sched.h>
which complicates the cleanup of sched.h dependencies.

Remove it.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:32 +01:00
Ingo Molnar ed53742d79 sched/headers: Remove <linux/sched.h> from <linux/sched/cpufreq.h>
Make the <linux/sched/cpufreq.h> file a self-contained header and
remove the <linux/sched.h> dependency: users of it either don't
need <linux/sched.h> - or have already included it.

This reduces the size of the header dependency graph.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:32 +01:00
Ingo Molnar aa829c7679 sched/headers: Remove <linux/cgroup-defs.h> from <linux/sched.h>
It's not used by anything in <linux/sched.h> anymore.

This reduces the preprocessed size of <linux/sched.h> and
speeds up the build a bit.

Also fix code that implicitly relied on headers included by <linux/cgroup-defs.h>.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:31 +01:00
Ingo Molnar ac4e620967 sched/headers: Remove #include <linux/capability.h> from <linux/sched.h>
The <linux/sched.h> header does not actually make use of any
types or APIs defined in <linux/capability.h>, so remove its inclusion.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:31 +01:00
Ingo Molnar de8deb0ad7 sched/headers: Remove <linux/sched.h> from <linux/sched/user.h>
If we add <linux/uidgid.h> then <linux/sched/user.h> becomes a
self-contained header and users of it either don't need <linux/sched.h>
or have already included it.

This reduces the size of the header dependency graph.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:30 +01:00
Ingo Molnar 556725839e sched/headers: Remove unused 'task_can_switch_user()' prototype
The function does not exist anymore.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:30 +01:00
Ingo Molnar ae1cc88232 sched/headers: Remove <linux/sched.h> from <linux/sched/coredump.h>
The <linux/sched/coredump.h> file is a self-contained header and users of
it either don't need <linux/sched.h> - or have already included it.

Include <linux/mm_types.h>.

This reduces the size of the header dependency graph.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:30 +01:00
Ingo Molnar b8d6d80b37 sched/headers: Remove <linux/sched.h> from <linux/sched/mm.h>
The <linux/sched/mm.h> file is a self-contained header and users of
it either don't need <linux/sched.h> - or have already included it.

Include kernel.h and atomic.h.

This reduces the size of the header dependency graph.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:29 +01:00
Ingo Molnar 5fd73157bd sched/headers: Remove <linux/sched.h> from <linux/sched/autogroup.h>
The <linux/sched/autogroup.h> file is a largely self-contained header and users of
it either don't need <linux/sched.h> - or have already included it.

Add a 'task_struct' predeclaration to make it build standalone.

This reduces the size of the header dependency graph.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:29 +01:00
Ingo Molnar 5a2d6880f4 sched/headers: Remove <linux/sched.h> from <linux/sched/loadavg.h>
The <linux/sched/loadavg.h> file is a self-contained header and users of
it either don't need <linux/sched.h> - or have already included it.

This reduces the size of the header dependency graph.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:28 +01:00
Ingo Molnar cc689c5b35 sched/headers: Remove <linux/sched.h> and <linux/slab.h> from <linux/delayacct.h>
The <linux/delayacct.h> file is a self-contained header and users of
it either don't need <linux/sched.h> and <linux/slab.h> - or have
already included it.

This reduces the size of the header dependency graph.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:28 +01:00
Ingo Molnar ea94763950 sched/headers: Remove <linux/sched.h> from <linux/sched/clock.h>
The <linux/sched/clock.h> file is a largely self-contained header and users of
it either don't need <linux/sched.h> - or have already included it.

This reduces the size of the header dependency graph.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:27 +01:00
Ingo Molnar f411229e1d sched/headers: Remove tsk_is_polling()
It's not used by anything.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:27 +01:00
Ingo Molnar c03cb28e7c sched/headers: Remove <linux/sched.h> from <linux/sched/topology.h>
The <linux/sched/topology.h> file is a self-contained header and users of
it either don't need <linux/sched.h> - or have already included it.

This reduces the size of the header dependency graph.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:45:27 +01:00