mirror of https://gitee.com/openkylin/linux.git
2723 Commits
Author | SHA1 | Message | Date |
---|---|---|---|
Minchan Kim | 78fa51503f |
mm: use proper type for cma_[alloc|release]
size_t in cma_alloc is confusing since it makes people think it's byte
count, not pages. Change it to unsigned long[1].
The unsigned int in cma_release is also not right so change it. Since we
have unsigned long in cma_release, free_contig_range should also respect
it.
[1]
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Minchan Kim | 3aab8ae7aa |
mm: cma: add the CMA instance name to cma trace events
There were missing places to add cma instance name. To identify each CMA instance, let's add the name for every cma trace. This patch also changes the existing cma_trace_alloc to cma_trace_finish since we have cma_alloc_start[1]. [1] https://lore.kernel.org/linux-mm/20210324160740.15901-1-georgi.djakov@linaro.org Link: https://lkml.kernel.org/r/20210330220237.748899-1-minchan@kernel.org Signed-off-by: Minchan Kim <minchan@kernel.org> Cc: Liam Mark <lmark@codeaurora.org> Cc: Georgi Djakov <georgi.djakov@linaro.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Liam Mark | 7bc1aec5e2 |
mm: cma: add trace events for CMA alloc perf testing
Add cma and migrate trace events to enable CMA allocation performance to be measured via ftrace. [georgi.djakov@linaro.org: add the CMA instance name to the cma_alloc_start trace event] Link: https://lkml.kernel.org/r/20210326155414.25006-1-georgi.djakov@linaro.org Link: https://lkml.kernel.org/r/20210324160740.15901-1-georgi.djakov@linaro.org Signed-off-by: Liam Mark <lmark@codeaurora.org> Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org> Acked-by: Minchan Kim <minchan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Axel Rasmussen | 7677f7fd8b |
userfaultfd: add minor fault registration mode
Patch series "userfaultfd: add minor fault handling", v9. Overview ======== This series adds a new userfaultfd feature, UFFD_FEATURE_MINOR_HUGETLBFS. When enabled (via the UFFDIO_API ioctl), this feature means that any hugetlbfs VMAs registered with UFFDIO_REGISTER_MODE_MISSING will *also* get events for "minor" faults. By "minor" fault, I mean the following situation: Let there exist two mappings (i.e., VMAs) to the same page(s) (shared memory). One of the mappings is registered with userfaultfd (in minor mode), and the other is not. Via the non-UFFD mapping, the underlying pages have already been allocated & filled with some contents. The UFFD mapping has not yet been faulted in; when it is touched for the first time, this results in what I'm calling a "minor" fault. As a concrete example, when working with hugetlbfs, we have huge_pte_none(), but find_lock_page() finds an existing page. We also add a new ioctl to resolve such faults: UFFDIO_CONTINUE. The idea is, userspace resolves the fault by either a) doing nothing if the contents are already correct, or b) updating the underlying contents using the second, non-UFFD mapping (via memcpy/memset or similar, or something fancier like RDMA, or etc...). In either case, userspace issues UFFDIO_CONTINUE to tell the kernel "I have ensured the page contents are correct, carry on setting up the mapping". Use Case ======== Consider the use case of VM live migration (e.g. under QEMU/KVM): 1. While a VM is still running, we copy the contents of its memory to a target machine. The pages are populated on the target by writing to the non-UFFD mapping, using the setup described above. The VM is still running (and therefore its memory is likely changing), so this may be repeated several times, until we decide the target is "up to date enough". 2. We pause the VM on the source, and start executing on the target machine. During this gap, the VM's user(s) will *see* a pause, so it is desirable to minimize this window. 3. Between the last time any page was copied from the source to the target, and when the VM was paused, the contents of that page may have changed - and therefore the copy we have on the target machine is out of date. Although we can keep track of which pages are out of date, for VMs with large amounts of memory, it is "slow" to transfer this information to the target machine. We want to resume execution before such a transfer would complete. 4. So, the guest begins executing on the target machine. The first time it touches its memory (via the UFFD-registered mapping), userspace wants to intercept this fault. Userspace checks whether or not the page is up to date, and if not, copies the updated page from the source machine, via the non-UFFD mapping. Finally, whether a copy was performed or not, userspace issues a UFFDIO_CONTINUE ioctl to tell the kernel "I have ensured the page contents are correct, carry on setting up the mapping". We don't have to do all of the final updates on-demand. The userfaultfd manager can, in the background, also copy over updated pages once it receives the map of which pages are up-to-date or not. Interaction with Existing APIs ============================== Because this is a feature, a registered VMA could potentially receive both missing and minor faults. I spent some time thinking through how the existing API interacts with the new feature: UFFDIO_CONTINUE cannot be used to resolve non-minor faults, as it does not allocate a new page. If UFFDIO_CONTINUE is used on a non-minor fault: - For non-shared memory or shmem, -EINVAL is returned. - For hugetlb, -EFAULT is returned. UFFDIO_COPY and UFFDIO_ZEROPAGE cannot be used to resolve minor faults. Without modifications, the existing codepath assumes a new page needs to be allocated. This is okay, since userspace must have a second non-UFFD-registered mapping anyway, thus there isn't much reason to want to use these in any case (just memcpy or memset or similar). - If UFFDIO_COPY is used on a minor fault, -EEXIST is returned. - If UFFDIO_ZEROPAGE is used on a minor fault, -EEXIST is returned (or -EINVAL in the case of hugetlb, as UFFDIO_ZEROPAGE is unsupported in any case). - UFFDIO_WRITEPROTECT simply doesn't work with shared memory, and returns -ENOENT in that case (regardless of the kind of fault). Future Work =========== This series only supports hugetlbfs. I have a second series in flight to support shmem as well, extending the functionality. This series is more mature than the shmem support at this point, and the functionality works fully on hugetlbfs, so this series can be merged first and then shmem support will follow. This patch (of 6): This feature allows userspace to intercept "minor" faults. By "minor" faults, I mean the following situation: Let there exist two mappings (i.e., VMAs) to the same page(s). One of the mappings is registered with userfaultfd (in minor mode), and the other is not. Via the non-UFFD mapping, the underlying pages have already been allocated & filled with some contents. The UFFD mapping has not yet been faulted in; when it is touched for the first time, this results in what I'm calling a "minor" fault. As a concrete example, when working with hugetlbfs, we have huge_pte_none(), but find_lock_page() finds an existing page. This commit adds the new registration mode, and sets the relevant flag on the VMAs being registered. In the hugetlb fault path, if we find that we have huge_pte_none(), but find_lock_page() does indeed find an existing page, then we have a "minor" fault, and if the VMA has the userfaultfd registration flag, we call into userfaultfd to handle it. This is implemented as a new registration mode, instead of an API feature. This is because the alternative implementation has significant drawbacks [1]. However, doing it this was requires we allocate a VM_* flag for the new registration mode. On 32-bit systems, there are no unused bits, so this feature is only supported on architectures with CONFIG_ARCH_USES_HIGH_VMA_FLAGS. When attempting to register a VMA in MINOR mode on 32-bit architectures, we return -EINVAL. [1] https://lore.kernel.org/patchwork/patch/1380226/ [peterx@redhat.com: fix minor fault page leak] Link: https://lkml.kernel.org/r/20210322175132.36659-1-peterx@redhat.com Link: https://lkml.kernel.org/r/20210301222728.176417-1-axelrasmussen@google.com Link: https://lkml.kernel.org/r/20210301222728.176417-2-axelrasmussen@google.com Signed-off-by: Axel Rasmussen <axelrasmussen@google.com> Reviewed-by: Peter Xu <peterx@redhat.com> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chinwen Chang <chinwen.chang@mediatek.com> Cc: Huang Ying <ying.huang@intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jann Horn <jannh@google.com> Cc: Jerome Glisse <jglisse@redhat.com> Cc: Lokesh Gidra <lokeshgidra@google.com> Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: "Michal Koutn" <mkoutny@suse.com> Cc: Michel Lespinasse <walken@google.com> Cc: Mike Rapoport <rppt@linux.vnet.ibm.com> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Peter Xu <peterx@redhat.com> Cc: Shaohua Li <shli@fb.com> Cc: Shawn Anastasio <shawn@anastas.io> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Steven Price <steven.price@arm.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Adam Ruprecht <ruprecht@google.com> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: Cannon Matthews <cannonmatthews@google.com> Cc: "Dr . David Alan Gilbert" <dgilbert@redhat.com> Cc: David Rientjes <rientjes@google.com> Cc: Mina Almasry <almasrymina@google.com> Cc: Oliver Upton <oupton@google.com> Cc: Kirill A. Shutemov <kirill@shutemov.name> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Ovidiu Panait | f900110782 |
mm, tracing: improve rss_stat tracepoint message
Adjust the rss_stat tracepoint to print the name of the resident page type that got updated (e.g. MM_ANONPAGES/MM_FILEPAGES), rather than the numeric index corresponding to it (the __entry->member value): Before this patch: ------------------ rss_stat: mm_id=1216113068 curr=0 member=1 size=28672B rss_stat: mm_id=1216113068 curr=0 member=1 size=0B rss_stat: mm_id=534402304 curr=1 member=0 size=188416B rss_stat: mm_id=534402304 curr=1 member=1 size=40960B After this patch: ----------------- rss_stat: mm_id=1726253524 curr=1 type=MM_ANONPAGES size=40960B rss_stat: mm_id=1726253524 curr=1 type=MM_FILEPAGES size=663552B rss_stat: mm_id=1726253524 curr=1 type=MM_ANONPAGES size=65536B rss_stat: mm_id=1726253524 curr=1 type=MM_FILEPAGES size=647168B Use TRACE_DEFINE_ENUM()/__print_symbolic() logic to map the enum values to the strings they represent, so that userspace tools can also parse the raw data correctly. Link: https://lkml.kernel.org/r/20210310162305.4862-1-ovidiu.panait@windriver.com Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com> Suggested-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.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 | 9d31d23389 |
Networking changes for 5.13.
Core: - bpf: - allow bpf programs calling kernel functions (initially to reuse TCP congestion control implementations) - enable task local storage for tracing programs - remove the need to store per-task state in hash maps, and allow tracing programs access to task local storage previously added for BPF_LSM - add bpf_for_each_map_elem() helper, allowing programs to walk all map elements in a more robust and easier to verify fashion - sockmap: support UDP and cross-protocol BPF_SK_SKB_VERDICT redirection - lpm: add support for batched ops in LPM trie - add BTF_KIND_FLOAT support - mostly to allow use of BTF on s390 which has floats in its headers files - improve BPF syscall documentation and extend the use of kdoc parsing scripts we already employ for bpf-helpers - libbpf, bpftool: support static linking of BPF ELF files - improve support for encapsulation of L2 packets - xdp: restructure redirect actions to avoid a runtime lookup, improving performance by 4-8% in microbenchmarks - xsk: build skb by page (aka generic zerocopy xmit) - improve performance of software AF_XDP path by 33% for devices which don't need headers in the linear skb part (e.g. virtio) - nexthop: resilient next-hop groups - improve path stability on next-hops group changes (incl. offload for mlxsw) - ipv6: segment routing: add support for IPv4 decapsulation - icmp: add support for RFC 8335 extended PROBE messages - inet: use bigger hash table for IP ID generation - tcp: deal better with delayed TX completions - make sure we don't give up on fast TCP retransmissions only because driver is slow in reporting that it completed transmitting the original - tcp: reorder tcp_congestion_ops for better cache locality - mptcp: - add sockopt support for common TCP options - add support for common TCP msg flags - include multiple address ids in RM_ADDR - add reset option support for resetting one subflow - udp: GRO L4 improvements - improve 'forward' / 'frag_list' co-existence with UDP tunnel GRO, allowing the first to take place correctly even for encapsulated UDP traffic - micro-optimize dev_gro_receive() and flow dissection, avoid retpoline overhead on VLAN and TEB GRO - use less memory for sysctls, add a new sysctl type, to allow using u8 instead of "int" and "long" and shrink networking sysctls - veth: allow GRO without XDP - this allows aggregating UDP packets before handing them off to routing, bridge, OvS, etc. - allow specifing ifindex when device is moved to another namespace - netfilter: - nft_socket: add support for cgroupsv2 - nftables: add catch-all set element - special element used to define a default action in case normal lookup missed - use net_generic infra in many modules to avoid allocating per-ns memory unnecessarily - xps: improve the xps handling to avoid potential out-of-bound accesses and use-after-free when XPS change race with other re-configuration under traffic - add a config knob to turn off per-cpu netdev refcnt to catch underflows in testing Device APIs: - add WWAN subsystem to organize the WWAN interfaces better and hopefully start driving towards more unified and vendor- -independent APIs - ethtool: - add interface for reading IEEE MIB stats (incl. mlx5 and bnxt support) - allow network drivers to dump arbitrary SFP EEPROM data, current offset+length API was a poor fit for modern SFP which define EEPROM in terms of pages (incl. mlx5 support) - act_police, flow_offload: add support for packet-per-second policing (incl. offload for nfp) - psample: add additional metadata attributes like transit delay for packets sampled from switch HW (and corresponding egress and policy-based sampling in the mlxsw driver) - dsa: improve support for sandwiched LAGs with bridge and DSA - netfilter: - flowtable: use direct xmit in topologies with IP forwarding, bridging, vlans etc. - nftables: counter hardware offload support - Bluetooth: - improvements for firmware download w/ Intel devices - add support for reading AOSP vendor capabilities - add support for virtio transport driver - mac80211: - allow concurrent monitor iface and ethernet rx decap - set priority and queue mapping for injected frames - phy: add support for Clause-45 PHY Loopback - pci/iov: add sysfs MSI-X vector assignment interface to distribute MSI-X resources to VFs (incl. mlx5 support) New hardware/drivers: - dsa: mv88e6xxx: add support for Marvell mv88e6393x - 11-port Ethernet switch with 8x 1-Gigabit Ethernet and 3x 10-Gigabit interfaces. - dsa: support for legacy Broadcom tags used on BCM5325, BCM5365 and BCM63xx switches - Microchip KSZ8863 and KSZ8873; 3x 10/100Mbps Ethernet switches - ath11k: support for QCN9074 a 802.11ax device - Bluetooth: Broadcom BCM4330 and BMC4334 - phy: Marvell 88X2222 transceiver support - mdio: add BCM6368 MDIO mux bus controller - r8152: support RTL8153 and RTL8156 (USB Ethernet) chips - mana: driver for Microsoft Azure Network Adapter (MANA) - Actions Semi Owl Ethernet MAC - can: driver for ETAS ES58X CAN/USB interfaces Pure driver changes: - add XDP support to: enetc, igc, stmmac - add AF_XDP support to: stmmac - virtio: - page_to_skb() use build_skb when there's sufficient tailroom (21% improvement for 1000B UDP frames) - support XDP even without dedicated Tx queues - share the Tx queues with the stack when necessary - mlx5: - flow rules: add support for mirroring with conntrack, matching on ICMP, GTP, flex filters and more - support packet sampling with flow offloads - persist uplink representor netdev across eswitch mode changes - allow coexistence of CQE compression and HW time-stamping - add ethtool extended link error state reporting - ice, iavf: support flow filters, UDP Segmentation Offload - dpaa2-switch: - move the driver out of staging - add spanning tree (STP) support - add rx copybreak support - add tc flower hardware offload on ingress traffic - ionic: - implement Rx page reuse - support HW PTP time-stamping - octeon: support TC hardware offloads - flower matching on ingress and egress ratelimitting. - stmmac: - add RX frame steering based on VLAN priority in tc flower - support frame preemption (FPE) - intel: add cross time-stamping freq difference adjustment - ocelot: - support forwarding of MRP frames in HW - support multiple bridges - support PTP Sync one-step timestamping - dsa: mv88e6xxx, dpaa2-switch: offload bridge port flags like learning, flooding etc. - ipa: add IPA v4.5, v4.9 and v4.11 support (Qualcomm SDX55, SM8350, SC7280 SoCs) - mt7601u: enable TDLS support - mt76: - add support for 802.3 rx frames (mt7915/mt7615) - mt7915 flash pre-calibration support - mt7921/mt7663 runtime power management fixes Signed-off-by: Jakub Kicinski <kuba@kernel.org> -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE6jPA+I1ugmIBA4hXMUZtbf5SIrsFAmCKFPIACgkQMUZtbf5S Irtw0g/+NA8bWdHNgG4H5rya0pv2z3IieLRmSdDfKRQQXcJpklawc5MKVVaTee/Q 5/QqgPdCsu1LAU6JXBKsKmyDDaMlQKdWuKbOqDSiAQKoMesZStTEHf9d851ZzgxA Cdb6O7BD3lBl/IN+oxNG+KcmD1LKquTPKGySq2mQtEdLO12ekAsranzmj4voKffd q9tBShpXQ7Dq77DLYfiQXVCvsizNcbbJFuxX0o9Lpb9+61ZyYAbogZSa9ypiZZwR I/9azRBtJg7UV1aD/cLuAfy66Qh7t63+rCxVazs5Os8jVO26P/jQdisnnOe/x+p9 wYEmKm3GSu0V4SAPxkWW+ooKusflCeqDoMIuooKt6kbP6BRj540veGw3Ww/m5YFr 7pLQkTSP/tSjuGQIdBE1LOP5LBO8DZeC8Kiop9V0fzAW9hFSZbEq25WW0bPj8QQO zA4Z7yWlslvxcfY2BdJX3wD8klaINkl/8fDWZFFsBdfFX2VeLtm7Xfduw34BJpvU rYT3oWr6PhtkPAKR32SUcemSfeWgIVU41eSshzRz3kez1NngBUuLlSGGSEaKbes5 pZVt6pYFFVByyf6MTHFEoQvafZfEw04JILZpo4R5V8iTHzom0kD3Py064sBiXEw2 B6t+OW4qgcxGblpFkK2lD4kR2s1TPUs0ckVO6sAy1x8q60KKKjY= =vcbA -----END PGP SIGNATURE----- Merge tag 'net-next-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - bpf: - allow bpf programs calling kernel functions (initially to reuse TCP congestion control implementations) - enable task local storage for tracing programs - remove the need to store per-task state in hash maps, and allow tracing programs access to task local storage previously added for BPF_LSM - add bpf_for_each_map_elem() helper, allowing programs to walk all map elements in a more robust and easier to verify fashion - sockmap: support UDP and cross-protocol BPF_SK_SKB_VERDICT redirection - lpm: add support for batched ops in LPM trie - add BTF_KIND_FLOAT support - mostly to allow use of BTF on s390 which has floats in its headers files - improve BPF syscall documentation and extend the use of kdoc parsing scripts we already employ for bpf-helpers - libbpf, bpftool: support static linking of BPF ELF files - improve support for encapsulation of L2 packets - xdp: restructure redirect actions to avoid a runtime lookup, improving performance by 4-8% in microbenchmarks - xsk: build skb by page (aka generic zerocopy xmit) - improve performance of software AF_XDP path by 33% for devices which don't need headers in the linear skb part (e.g. virtio) - nexthop: resilient next-hop groups - improve path stability on next-hops group changes (incl. offload for mlxsw) - ipv6: segment routing: add support for IPv4 decapsulation - icmp: add support for RFC 8335 extended PROBE messages - inet: use bigger hash table for IP ID generation - tcp: deal better with delayed TX completions - make sure we don't give up on fast TCP retransmissions only because driver is slow in reporting that it completed transmitting the original - tcp: reorder tcp_congestion_ops for better cache locality - mptcp: - add sockopt support for common TCP options - add support for common TCP msg flags - include multiple address ids in RM_ADDR - add reset option support for resetting one subflow - udp: GRO L4 improvements - improve 'forward' / 'frag_list' co-existence with UDP tunnel GRO, allowing the first to take place correctly even for encapsulated UDP traffic - micro-optimize dev_gro_receive() and flow dissection, avoid retpoline overhead on VLAN and TEB GRO - use less memory for sysctls, add a new sysctl type, to allow using u8 instead of "int" and "long" and shrink networking sysctls - veth: allow GRO without XDP - this allows aggregating UDP packets before handing them off to routing, bridge, OvS, etc. - allow specifing ifindex when device is moved to another namespace - netfilter: - nft_socket: add support for cgroupsv2 - nftables: add catch-all set element - special element used to define a default action in case normal lookup missed - use net_generic infra in many modules to avoid allocating per-ns memory unnecessarily - xps: improve the xps handling to avoid potential out-of-bound accesses and use-after-free when XPS change race with other re-configuration under traffic - add a config knob to turn off per-cpu netdev refcnt to catch underflows in testing Device APIs: - add WWAN subsystem to organize the WWAN interfaces better and hopefully start driving towards more unified and vendor- independent APIs - ethtool: - add interface for reading IEEE MIB stats (incl. mlx5 and bnxt support) - allow network drivers to dump arbitrary SFP EEPROM data, current offset+length API was a poor fit for modern SFP which define EEPROM in terms of pages (incl. mlx5 support) - act_police, flow_offload: add support for packet-per-second policing (incl. offload for nfp) - psample: add additional metadata attributes like transit delay for packets sampled from switch HW (and corresponding egress and policy-based sampling in the mlxsw driver) - dsa: improve support for sandwiched LAGs with bridge and DSA - netfilter: - flowtable: use direct xmit in topologies with IP forwarding, bridging, vlans etc. - nftables: counter hardware offload support - Bluetooth: - improvements for firmware download w/ Intel devices - add support for reading AOSP vendor capabilities - add support for virtio transport driver - mac80211: - allow concurrent monitor iface and ethernet rx decap - set priority and queue mapping for injected frames - phy: add support for Clause-45 PHY Loopback - pci/iov: add sysfs MSI-X vector assignment interface to distribute MSI-X resources to VFs (incl. mlx5 support) New hardware/drivers: - dsa: mv88e6xxx: add support for Marvell mv88e6393x - 11-port Ethernet switch with 8x 1-Gigabit Ethernet and 3x 10-Gigabit interfaces. - dsa: support for legacy Broadcom tags used on BCM5325, BCM5365 and BCM63xx switches - Microchip KSZ8863 and KSZ8873; 3x 10/100Mbps Ethernet switches - ath11k: support for QCN9074 a 802.11ax device - Bluetooth: Broadcom BCM4330 and BMC4334 - phy: Marvell 88X2222 transceiver support - mdio: add BCM6368 MDIO mux bus controller - r8152: support RTL8153 and RTL8156 (USB Ethernet) chips - mana: driver for Microsoft Azure Network Adapter (MANA) - Actions Semi Owl Ethernet MAC - can: driver for ETAS ES58X CAN/USB interfaces Pure driver changes: - add XDP support to: enetc, igc, stmmac - add AF_XDP support to: stmmac - virtio: - page_to_skb() use build_skb when there's sufficient tailroom (21% improvement for 1000B UDP frames) - support XDP even without dedicated Tx queues - share the Tx queues with the stack when necessary - mlx5: - flow rules: add support for mirroring with conntrack, matching on ICMP, GTP, flex filters and more - support packet sampling with flow offloads - persist uplink representor netdev across eswitch mode changes - allow coexistence of CQE compression and HW time-stamping - add ethtool extended link error state reporting - ice, iavf: support flow filters, UDP Segmentation Offload - dpaa2-switch: - move the driver out of staging - add spanning tree (STP) support - add rx copybreak support - add tc flower hardware offload on ingress traffic - ionic: - implement Rx page reuse - support HW PTP time-stamping - octeon: support TC hardware offloads - flower matching on ingress and egress ratelimitting. - stmmac: - add RX frame steering based on VLAN priority in tc flower - support frame preemption (FPE) - intel: add cross time-stamping freq difference adjustment - ocelot: - support forwarding of MRP frames in HW - support multiple bridges - support PTP Sync one-step timestamping - dsa: mv88e6xxx, dpaa2-switch: offload bridge port flags like learning, flooding etc. - ipa: add IPA v4.5, v4.9 and v4.11 support (Qualcomm SDX55, SM8350, SC7280 SoCs) - mt7601u: enable TDLS support - mt76: - add support for 802.3 rx frames (mt7915/mt7615) - mt7915 flash pre-calibration support - mt7921/mt7663 runtime power management fixes" * tag 'net-next-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2451 commits) net: selftest: fix build issue if INET is disabled net: netrom: nr_in: Remove redundant assignment to ns net: tun: Remove redundant assignment to ret net: phy: marvell: add downshift support for M88E1240 net: dsa: ksz: Make reg_mib_cnt a u8 as it never exceeds 255 net/sched: act_ct: Remove redundant ct get and check icmp: standardize naming of RFC 8335 PROBE constants bpf, selftests: Update array map tests for per-cpu batched ops bpf: Add batched ops support for percpu array bpf: Implement formatted output helpers with bstr_printf seq_file: Add a seq_bprintf function sfc: adjust efx->xdp_tx_queue_count with the real number of initialized queues net:nfc:digital: Fix a double free in digital_tg_recv_dep_req net: fix a concurrency bug in l2tp_tunnel_register() net/smc: Remove redundant assignment to rc mpls: Remove redundant assignment to err llc2: Remove redundant assignment to rc net/tls: Remove redundant initialization of record rds: Remove redundant assignment to nr_sig dt-bindings: net: mdio-gpio: add compatible for microchip,mdio-smi0 ... |
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Linus Torvalds | 635de956a7 |
The x86 MM changes in this cycle were:
- Implement concurrent TLB flushes, which overlaps the local TLB flush with the remote TLB flush. In testing this improved sysbench performance measurably by a couple of percentage points, especially if TLB-heavy security mitigations are active. - Further micro-optimizations to improve the performance of TLB flushes. Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmCKbNcRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1hjYBAAsyNUa/gOu0g6/Cx8R86w9HtHHmm5vso/ 6nJjWj2fd2qJ9JShlddxvXEMeXtPTYabVWQkiiriFMuofk6JeKnlHm1Jzl6keABX OQFwjIFeNASPRcdXvuuYPOVWAJJdr2oL9QUr6OOK1ccQJTz/Cd0zA+VQ5YqcsCon yaWbkxELwKXpgql+qt66eAZ6Q2Y1TKXyrTW7ZgxQi0yeeWqMaEOub0/oyS7Ax1Rg qEJMwm1prb76NPzeqR/G3e4KTrDZfQ/B/KnSsz36GTJpl4eye6XqWDUgm1nAGNIc 5dbc4Vx7JtZsUOuC0AmzWb3hsDyzVcN/lQvijdZ2RsYR3gvuYGaBhKqExqV0XH6P oqaWOKWCz+LqWbsgJmxCpqkt1LZl5+VUOcfJ97WkIS7DyIPtSHTzQXbBMZqKLeat mn5UcKYB2Gi7wsUPv6VC2ChKbDqN0VT8G86XbYylGo4BE46KoZKPUNY/QWKLUPd6 0UKcVeNM2HFyf1C73p/tO/z7hzu3qLuMMnsphP6/c2pKLpdgawEXgbnVKNId1B/c NrzyhTvVaMt+Um28bBRhHONIlzPJwWcnZbdY7NqMnu+LBKQ68cL/h4FOIV/RDLNb GJLgfAr8fIw/zIpqYuFHiiMNo9wWqVtZko1MvXhGceXUL69QuzTra2XR/6aDxkPf 6gQVesetTvo= =3Cyp -----END PGP SIGNATURE----- Merge tag 'x86-mm-2021-04-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 tlb updates from Ingo Molnar: "The x86 MM changes in this cycle were: - Implement concurrent TLB flushes, which overlaps the local TLB flush with the remote TLB flush. In testing this improved sysbench performance measurably by a couple of percentage points, especially if TLB-heavy security mitigations are active. - Further micro-optimizations to improve the performance of TLB flushes" * tag 'x86-mm-2021-04-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: smp: Micro-optimize smp_call_function_many_cond() smp: Inline on_each_cpu_cond() and on_each_cpu() x86/mm/tlb: Remove unnecessary uses of the inline keyword cpumask: Mark functions as pure x86/mm/tlb: Do not make is_lazy dirty for no reason x86/mm/tlb: Privatize cpu_tlbstate x86/mm/tlb: Flush remote and local TLBs concurrently x86/mm/tlb: Open-code on_each_cpu_cond_mask() for tlb_is_not_lazy() x86/mm/tlb: Unify flush_tlb_func_local() and flush_tlb_func_remote() smp: Run functions concurrently in smp_call_function_many_cond() |
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Linus Torvalds | d72cd4ad41 |
SCSI misc on 20210428
This series consists of the usual driver updates (ufs, target, tcmu, smartpqi, lpfc, zfcp, qla2xxx, mpt3sas, pm80xx). The major core change is using a sbitmap instead of an atomic for queue tracking. Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com> -----BEGIN PGP SIGNATURE----- iJwEABMIAEQWIQTnYEDbdso9F2cI+arnQslM7pishQUCYInvqCYcamFtZXMuYm90 dG9tbGV5QGhhbnNlbnBhcnRuZXJzaGlwLmNvbQAKCRDnQslM7pishYh2AP0SgqqL WYZRT2oiyBOKD28v+ceOSiXvgjPlqABwVMC0BAEAn29/wNCxyvzZ1k/b0iPJ4M+S klkSxLzXKQLzJBgdK5w= =p5B/ -----END PGP SIGNATURE----- Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI updates from James Bottomley: "This consists of the usual driver updates (ufs, target, tcmu, smartpqi, lpfc, zfcp, qla2xxx, mpt3sas, pm80xx). The major core change is using a sbitmap instead of an atomic for queue tracking" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (412 commits) scsi: target: tcm_fc: Fix a kernel-doc header scsi: target: Shorten ALUA error messages scsi: target: Fix two format specifiers scsi: target: Compare explicitly with SAM_STAT_GOOD scsi: sd: Introduce a new local variable in sd_check_events() scsi: dc395x: Open-code status_byte(u8) calls scsi: 53c700: Open-code status_byte(u8) calls scsi: smartpqi: Remove unused functions scsi: qla4xxx: Remove an unused function scsi: myrs: Remove unused functions scsi: myrb: Remove unused functions scsi: mpt3sas: Fix two kernel-doc headers scsi: fcoe: Suppress a compiler warning scsi: libfc: Fix a format specifier scsi: aacraid: Remove an unused function scsi: core: Introduce enum scsi_disposition scsi: core: Modify the scsi_send_eh_cmnd() return value for the SDEV_BLOCK case scsi: core: Rename scsi_softirq_done() into scsi_complete() scsi: core: Remove an incorrect comment scsi: core: Make the scsi_alloc_sgtables() documentation more accurate ... |
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Linus Torvalds | 625434dafd |
for-5.13/io_uring-2021-04-27
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Linus Torvalds | 6c00292113 |
for-5.13/block-2021-04-27
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Linus Torvalds | 9a45da9270 |
RCU changes for this cycle were:
- Bitmap support for "N" as alias for last bit - kvfree_rcu updates - mm_dump_obj() updates. (One of these is to mm, but was suggested by Andrew Morton.) - RCU callback offloading update - Polling RCU grace-period interfaces - Realtime-related RCU updates - Tasks-RCU updates - Torture-test updates - Torture-test scripting updates - Miscellaneous fixes Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmCJCZERHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1hRjw/+Jkb9KvR9odPt/zqN/KPtIlburCUWgsFb 2zAlWN4uMocPAiXT2Xq58/8gqMkpyn7ZVZtL1tD8fZSvlwEr0U8Z74+/NdoQvYE+ kMXIYIuhIAGRyAupmzkriqN33iY+BSZPacX3u6ziPj57/0OZzbWVN/DAhbuvyLqG J/oL4PHCa7XAqXbf95rd5Zjs680QJ3CbTRh4nA8uHArzJmKZOaaHJ05Pxd1LpULe SJ+5p1GQnnwxd1HqmlHMDu/dW+2hE35BGykF8zi78je9OJXualDoM/6JpIYGhMNY 5qlhU55QYP1jzjuNGVZZUS4L77eS2/W7SpPAaTmMEy/SsVB59G8Kf22oNDpVaEqQ m+2ErqwaHvlkMjqnsx+JQbsOP0yCi2NZBoEPFdfk1H23E2deVlSDbxPso4Zb1oUD E12769kN+SWDytuLSOAe1PY/KXqmNUKjPZl1GDCGXL7HlCnWyggUDschTsKJa19O XXl+yCTGMUH4XAPSqavAKQbBjurqpT6i4zfooSH4TBtOHm1ExgZOUS8gglZ1JuJd q+uJdZIgS8BcGkGw/k1bYDWY5TA4Rjv3sAOKQL1PgYBl1t/yLK441mE7LI9gWOwz Crz7vlSxD6Jc2cYQeUVW0KPGt5aVd63Gd9HjpXxGkqYQSDRqYMCebHEAGagz+jj7 Nv/nOnf34Uc= =mpNt -----END PGP SIGNATURE----- Merge tag 'core-rcu-2021-04-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull RCU updates from Ingo Molnar: - Support for "N" as alias for last bit in bitmap parsing library (eg using syntax like "nohz_full=2-N") - kvfree_rcu updates - mm_dump_obj() updates. (One of these is to mm, but was suggested by Andrew Morton.) - RCU callback offloading update - Polling RCU grace-period interfaces - Realtime-related RCU updates - Tasks-RCU updates - Torture-test updates - Torture-test scripting updates - Miscellaneous fixes * tag 'core-rcu-2021-04-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (77 commits) rcutorture: Test start_poll_synchronize_rcu() and poll_state_synchronize_rcu() rcu: Provide polling interfaces for Tiny RCU grace periods torture: Fix kvm.sh --datestamp regex check torture: Consolidate qemu-cmd duration editing into kvm-transform.sh torture: Print proper vmlinux path for kvm-again.sh runs torture: Make TORTURE_TRUST_MAKE available in kvm-again.sh environment torture: Make kvm-transform.sh update jitter commands torture: Add --duration argument to kvm-again.sh torture: Add kvm-again.sh to rerun a previous torture-test torture: Create a "batches" file for build reuse torture: De-capitalize TORTURE_SUITE torture: Make upper-case-only no-dot no-slash scenario names official torture: Rename SRCU-t and SRCU-u to avoid lowercase characters torture: Remove no-mpstat error message torture: Record kvm-test-1-run.sh and kvm-test-1-run-qemu.sh PIDs torture: Record jitter start/stop commands torture: Extract kvm-test-1-run-qemu.sh from kvm-test-1-run.sh torture: Record TORTURE_KCONFIG_GDB_ARG in qemu-cmd torture: Abstract jitter.sh start/stop into scripts rcu: Provide polling interfaces for Tree RCU grace periods ... |
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Linus Torvalds | fafe1e39ed |
AFS: Use the new netfs lib
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Linus Torvalds | 820c4bae40 |
Network filesystem helper library
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This set consists of two parts: (1) Add a helper library to handle the new VM readahead interface. This is intended to be used unconditionally by the filesystem (whether or not caching is enabled) and provides a common framework for doing caching, transparent huge pages and, in the future, possibly fscrypt and read bandwidth maximisation. It also allows the netfs and the cache to align, expand and slice up a read request from the VM in various ways; the netfs need only provide a function to read a stretch of data to the pagecache and the helper takes care of the rest. (2) Add an alternative fscache/cachfiles I/O API that uses the kiocb facility to do async DIO to transfer data to/from the netfs's pages, rather than using readpage with wait queue snooping on one side and vfs_write() on the other. It also uses less memory, since it doesn't do buffered I/O on the backing file. Note that this uses SEEK_HOLE/SEEK_DATA to locate the data available to be read from the cache. Whilst this is an improvement from the bmap interface, it still has a problem with regard to a modern extent-based filesystem inserting or removing bridging blocks of zeros. Fixing that requires a much greater overhaul. This is a step towards overhauling the fscache API. The change is opt-in on the part of the network filesystem. A netfs should not try to mix the old and the new API because of conflicting ways of handling pages and the PG_fscache page flag and because it would be mixing DIO with buffered I/O. Further, the helper library can't be used with the old API. This does not change any of the fscache cookie handling APIs or the way invalidation is done at this time. In the near term, I intend to deprecate and remove the old I/O API (fscache_allocate_page{,s}(), fscache_read_or_alloc_page{,s}(), fscache_write_page() and fscache_uncache_page()) and eventually replace most of fscache/cachefiles with something simpler and easier to follow. This patchset contains the following parts: - Some helper patches, including provision of an ITER_XARRAY iov iterator and a function to do readahead expansion. - Patches to add the netfs helper library. - A patch to add the fscache/cachefiles kiocb API. - A pair of patches to fix some review issues in the ITER_XARRAY and read helpers as spotted by Al and Willy. Jeff Layton has patches to add support in Ceph for this that he intends for this merge window. I have a set of patches to support AFS that I will post a separate pull request for. With this, AFS without a cache passes all expected xfstests; with a cache, there's an extra failure, but that's also there before these patches. Fixing that probably requires a greater overhaul. Ceph also passes the expected tests. I also have patches in a separate branch to tidy up the handling of PG_fscache/PG_private_2 and their contribution to page refcounting in the core kernel here, but I haven't included them in this set and will route them separately" Link: https://lore.kernel.org/lkml/3779937.1619478404@warthog.procyon.org.uk/ * tag 'netfs-lib-20210426' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs: netfs: Miscellaneous fixes iov_iter: Four fixes for ITER_XARRAY fscache, cachefiles: Add alternate API to use kiocb for read/write to cache netfs: Add a tracepoint to log failures that would be otherwise unseen netfs: Define an interface to talk to a cache netfs: Add write_begin helper netfs: Gather stats netfs: Add tracepoints netfs: Provide readahead and readpage netfs helpers netfs, mm: Add set/end/wait_on_page_fscache() aliases netfs, mm: Move PG_fscache helper funcs to linux/netfs.h netfs: Documentation for helper library netfs: Make a netfs helper module mm: Implement readahead_control pageset expansion mm/readahead: Handle ractl nr_pages being modified fs: Document file_ra_state mm/filemap: Pass the file_ra_state in the ractl mm: Add set/end/wait functions for PG_private_2 iov_iter: Add ITER_XARRAY |
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Linus Torvalds | 55ba0fe059 |
for-5.13-tag
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Linus Torvalds | c065c42966 |
Highlights:
- Update NFSv2 and NFSv3 XDR encoding functions - Add batch Receive posting to the server's RPC/RDMA transport (take 2) - Reduce page allocator traffic in svcrdma -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEKLLlsBKG3yQ88j7+M2qzM29mf5cFAmBzLCIACgkQM2qzM29m f5evWA//fE2WlZDoTP8Iq1BGreGrGyzqOIkJakDGoZs4VOaUJN9WxWEcmBHI4t22 yom7aZ7S7VtMF6SoGMnohYoNwkloPJ1kfYBVZuUxDUCIHGVrLaAGZwjtojQftUS0 19ZdiSx8D8xWEqI/cpbHsj+CNCH1F5IDGjJzNhlz+rIFLrRPBMeHwbY8qf/zusm/ uZ4tGJtKWmFXvdT9duGkoNXRd0gBdcfDeFN//JYrLPS9sX4zs4/2KnDh25YJR8Jf EQryc19l4ztlVT8PXJfI4I/fG0Sfv5AWuYYzaFIncp1PkmiunqGL1yai6eeW4LEN 8v3QEUNy9J7J20FrsL1ge1icbEyObfNFvkgYqNhmGIBdbEDdLWPppL6fQKUYl/zi HSnAoJsJYyzYKbE7BMLy3wwZ775GsTrkU/7tfiu/M9KgvXJtDy0m7vsxt3/qULXn Bg4KAKnmYIcuigdG6BATJ23jISRK7cHH/YYlORj3lsB/KQi+c2U/5zQFaROOwbtc Ny+y92zQZVu9ZMkUfs2+b5qdg8Z/J0p8n9MfS7GcpCIyGZTnvfs8SfM8BXuHH2Yn BdL3xDoPlbYQnAzp16oVfdoYm8RWzFBv+xHc360ielMOQbP4ntdC0oexIApsXzyz Yv4OK9itsLagwcuAxPWnfnIgGxj9hPsp/peUsChsglhx+4NSGWA= =BOO0 -----END PGP SIGNATURE----- Merge tag 'nfsd-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux Pull nfsd updates from Chuck Lever: "Highlights: - Update NFSv2 and NFSv3 XDR encoding functions - Add batch Receive posting to the server's RPC/RDMA transport (take 2) - Reduce page allocator traffic in svcrdma" * tag 'nfsd-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: (70 commits) NFSD: Use DEFINE_SPINLOCK() for spinlock sunrpc: Remove unused function ip_map_lookup NFSv4.2: fix copy stateid copying for the async copy UAPI: nfsfh.h: Replace one-element array with flexible-array member svcrdma: Clean up dto_q critical section in svc_rdma_recvfrom() svcrdma: Remove svc_rdma_recv_ctxt::rc_pages and ::rc_arg svcrdma: Remove sc_read_complete_q svcrdma: Single-stage RDMA Read SUNRPC: Move svc_xprt_received() call sites SUNRPC: Export svc_xprt_received() svcrdma: Retain the page backing rq_res.head[0].iov_base svcrdma: Remove unused sc_pages field svcrdma: Normalize Send page handling svcrdma: Add a "deferred close" helper svcrdma: Maintain a Receive water mark svcrdma: Use svc_rdma_refresh_recvs() in wc_receive svcrdma: Add a batch Receive posting mechanism svcrdma: Remove stale comment for svc_rdma_wc_receive() svcrdma: Provide an explanatory comment in CMA event handler svcrdma: RPCDBG_FACILITY is no longer used ... |
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Linus Torvalds | a4a78bc8ea |
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu: "API: - crypto_destroy_tfm now ignores errors as well as NULL pointers Algorithms: - Add explicit curve IDs in ECDH algorithm names - Add NIST P384 curve parameters - Add ECDSA Drivers: - Add support for Green Sardine in ccp - Add ecdh/curve25519 to hisilicon/hpre - Add support for AM64 in sa2ul" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (184 commits) fsverity: relax build time dependency on CRYPTO_SHA256 fscrypt: relax Kconfig dependencies for crypto API algorithms crypto: camellia - drop duplicate "depends on CRYPTO" crypto: s5p-sss - consistently use local 'dev' variable in probe() crypto: s5p-sss - remove unneeded local variable initialization crypto: s5p-sss - simplify getting of_device_id match data ccp: ccp - add support for Green Sardine crypto: ccp - Make ccp_dev_suspend and ccp_dev_resume void functions crypto: octeontx2 - add support for OcteonTX2 98xx CPT block. crypto: chelsio/chcr - Remove useless MODULE_VERSION crypto: ux500/cryp - Remove duplicate argument crypto: chelsio - remove unused function crypto: sa2ul - Add support for AM64 crypto: sa2ul - Support for per channel coherency dt-bindings: crypto: ti,sa2ul: Add new compatible for AM64 crypto: hisilicon - enable new error types for QM crypto: hisilicon - add new error type for SEC crypto: hisilicon - support new error types for ZIP crypto: hisilicon - dynamic configuration 'err_info' crypto: doc - fix kernel-doc notation in chacha.c and af_alg.c ... |
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David Howells | bd80d8a80e |
afs: Use ITER_XARRAY for writing
Use a single ITER_XARRAY iterator to describe the portion of a file to be transmitted to the server rather than generating a series of small ITER_BVEC iterators on the fly. This will make it easier to implement AIO in afs. In theory we could maybe use one giant ITER_BVEC, but that means potentially allocating a huge array of bio_vec structs (max 256 per page) when in fact the pagecache already has a structure listing all the relevant pages (radix_tree/xarray) that can be walked over. Signed-off-by: David Howells <dhowells@redhat.com> Tested-By: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org cc: linux-cachefs@redhat.com cc: linux-fsdevel@vger.kernel.org Link: https://lore.kernel.org/r/153685395197.14766.16289516750731233933.stgit@warthog.procyon.org.uk/ Link: https://lore.kernel.org/r/158861251312.340223.17924900795425422532.stgit@warthog.procyon.org.uk/ # rfc Link: https://lore.kernel.org/r/159465828607.1377938.6903132788463419368.stgit@warthog.procyon.org.uk/ Link: https://lore.kernel.org/r/160588535018.3465195.14509994354240338307.stgit@warthog.procyon.org.uk/ # rfc Link: https://lore.kernel.org/r/161118152415.1232039.6452879415814850025.stgit@warthog.procyon.org.uk/ # rfc Link: https://lore.kernel.org/r/161161048194.2537118.13763612220937637316.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/161340411602.1303470.4661108879482218408.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/161539555629.286939.5241869986617154517.stgit@warthog.procyon.org.uk/ # v4 Link: https://lore.kernel.org/r/161653811456.2770958.7017388543246759245.stgit@warthog.procyon.org.uk/ # v5 Link: https://lore.kernel.org/r/161789095005.6155.6789055030327407928.stgit@warthog.procyon.org.uk/ # v6 |
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David Howells | 67d78a6f6e |
afs: Pass page into dirty region helpers to provide THP size
Pass a pointer to the page being accessed into the dirty region helpers so that the size of the page can be determined in case it's a transparent huge page. This also required the page to be passed into the afs_page_dirty trace point - so there's no need to specifically pass in the index or private data as these can be retrieved directly from the page struct. Signed-off-by: David Howells <dhowells@redhat.com> Tested-By: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org cc: linux-cachefs@redhat.com cc: linux-fsdevel@vger.kernel.org Link: https://lore.kernel.org/r/160588527183.3465195.16107942526481976308.stgit@warthog.procyon.org.uk/ # rfc Link: https://lore.kernel.org/r/161118144921.1232039.11377711180492625929.stgit@warthog.procyon.org.uk/ # rfc Link: https://lore.kernel.org/r/161161040747.2537118.11435394902674511430.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/161340404553.1303470.11414163641767769882.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/161539548385.286939.8864598314493255313.stgit@warthog.procyon.org.uk/ # v4 Link: https://lore.kernel.org/r/161653804285.2770958.3497360004849598038.stgit@warthog.procyon.org.uk/ # v5 Link: https://lore.kernel.org/r/161789087043.6155.16922142208140170528.stgit@warthog.procyon.org.uk/ # v6 |
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David Howells | 0246f3e573 |
netfs: Add a tracepoint to log failures that would be otherwise unseen
Add a tracepoint to log internal failures (such as cache errors) that we don't otherwise want to pass back to the netfs. Signed-off-by: David Howells <dhowells@redhat.com> Tested-by: Jeff Layton <jlayton@kernel.org> Tested-by: Dave Wysochanski <dwysocha@redhat.com> Tested-By: Marc Dionne <marc.dionne@auristor.com> cc: Matthew Wilcox <willy@infradead.org> cc: linux-mm@kvack.org cc: linux-cachefs@redhat.com cc: linux-afs@lists.infradead.org cc: linux-nfs@vger.kernel.org cc: linux-cifs@vger.kernel.org cc: ceph-devel@vger.kernel.org cc: v9fs-developer@lists.sourceforge.net cc: linux-fsdevel@vger.kernel.org Link: https://lore.kernel.org/r/161781048813.463527.1557000804674707986.stgit@warthog.procyon.org.uk/ Link: https://lore.kernel.org/r/161789082749.6155.15498680577213140870.stgit@warthog.procyon.org.uk/ # v6 |
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David Howells | 726218fdc2 |
netfs: Define an interface to talk to a cache
Add an interface to the netfs helper library for reading data from the cache instead of downloading it from the server and support for writing data just downloaded or cleared to the cache. The API passes an iov_iter to the cache read/write routines to indicate the data/buffer to be used. This is done using the ITER_XARRAY type to provide direct access to the netfs inode's pagecache. When the netfs's ->begin_cache_operation() method is called, this must fill in the cache_resources in the netfs_read_request struct, including the netfs_cache_ops used by the helper lib to talk to the cache. The helper lib does not directly access the cache. Changes: v6: - Call trace_netfs_read() after beginning the cache op so that the cookie debug ID can be logged[3]. - Don't record the error from writing to the cache. We don't want to pass it back to the netfs[4]. - Fix copy-to-cache subreq amalgamation to not round up as it goes along otherwise it overcalculates the length of the write[5]. v5: - Use end_page_fscache() rather than unlock_page_fscache()[2]. v4: - Added flag to netfs_subreq_terminated() to indicate that the caller may have been running async and stuff that might sleep needs punting to a workqueue (can't use in_softirq()[1]). - Add missing inc of netfs_n_rh_read stat. - Move initial definition of fscache_begin_read_operation() elsewhere. - Need to call op->begin_cache_operation() from netfs_write_begin(). Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-and-tested-by: Jeff Layton <jlayton@kernel.org> Tested-by: Dave Wysochanski <dwysocha@redhat.com> Tested-By: Marc Dionne <marc.dionne@auristor.com> cc: Matthew Wilcox <willy@infradead.org> cc: linux-mm@kvack.org cc: linux-cachefs@redhat.com cc: linux-afs@lists.infradead.org cc: linux-nfs@vger.kernel.org cc: linux-cifs@vger.kernel.org cc: ceph-devel@vger.kernel.org cc: v9fs-developer@lists.sourceforge.net cc: linux-fsdevel@vger.kernel.org Link: https://lore.kernel.org/r/20210216084230.GA23669@lst.de/ [1] Link: https://lore.kernel.org/r/2499407.1616505440@warthog.procyon.org.uk/ [2] Link: https://lore.kernel.org/r/161781045123.463527.14533348855710902201.stgit@warthog.procyon.org.uk/ [3] Link: https://lore.kernel.org/r/161781046256.463527.18158681600085556192.stgit@warthog.procyon.org.uk/ [4] Link: https://lore.kernel.org/r/161781047695.463527.7463536103593997492.stgit@warthog.procyon.org.uk/ [5] Link: https://lore.kernel.org/r/161118141321.1232039.8296910406755622458.stgit@warthog.procyon.org.uk/ # rfc Link: https://lore.kernel.org/r/161161036700.2537118.11170748455436854978.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/161340399569.1303470.1138884774643385730.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/161539542874.286939.13337898213448136687.stgit@warthog.procyon.org.uk/ # v4 Link: https://lore.kernel.org/r/161653799826.2770958.9015430297426331950.stgit@warthog.procyon.org.uk/ # v5 Link: https://lore.kernel.org/r/161789081462.6155.3853904866933313256.stgit@warthog.procyon.org.uk/ # v6 |
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David Howells | e1b1240c1f |
netfs: Add write_begin helper
Add a helper to do the pre-reading work for the netfs write_begin address space op. Changes v6: - Fixed a missing rreq put in netfs_write_begin()[3]. - Use DEFINE_READAHEAD()[4]. v5: - Made the wait for PG_fscache in netfs_write_begin() killable[2]. v4: - Added flag to netfs_subreq_terminated() to indicate that the caller may have been running async and stuff that might sleep needs punting to a workqueue (can't use in_softirq()[1]). Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-and-tested-by: Jeff Layton <jlayton@kernel.org> Tested-by: Dave Wysochanski <dwysocha@redhat.com> Tested-By: Marc Dionne <marc.dionne@auristor.com> cc: Matthew Wilcox <willy@infradead.org> cc: linux-mm@kvack.org cc: linux-cachefs@redhat.com cc: linux-afs@lists.infradead.org cc: linux-nfs@vger.kernel.org cc: linux-cifs@vger.kernel.org cc: ceph-devel@vger.kernel.org cc: v9fs-developer@lists.sourceforge.net cc: linux-fsdevel@vger.kernel.org Link: https://lore.kernel.org/r/20210216084230.GA23669@lst.de/ [1] Link: https://lore.kernel.org/r/2499407.1616505440@warthog.procyon.org.uk/ [2] Link: https://lore.kernel.org/r/161781042127.463527.9154479794406046987.stgit@warthog.procyon.org.uk/ [3] Link: https://lore.kernel.org/r/1234933.1617886271@warthog.procyon.org.uk/ [4] Link: https://lore.kernel.org/r/160588543960.3465195.2792938973035886168.stgit@warthog.procyon.org.uk/ # rfc Link: https://lore.kernel.org/r/161118140165.1232039.16418853874312234477.stgit@warthog.procyon.org.uk/ # rfc Link: https://lore.kernel.org/r/161161035539.2537118.15674887534950908530.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/161340398368.1303470.11242918276563276090.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/161539541541.286939.1889738674057013729.stgit@warthog.procyon.org.uk/ # v4 Link: https://lore.kernel.org/r/161653798616.2770958.17213315845968485563.stgit@warthog.procyon.org.uk/ # v5 Link: https://lore.kernel.org/r/161789080530.6155.1011847312392330491.stgit@warthog.procyon.org.uk/ # v6 |
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David Howells | 77b4d2c631 |
netfs: Add tracepoints
Add three tracepoints to track the activity of the read helpers: (1) netfs/netfs_read This logs entry to the read helpers and also expansion of the range in a readahead request. (2) netfs/netfs_rreq This logs the progress of netfs_read_request objects which track read requests. A read request may be a compound of multiple subrequests. (3) netfs/netfs_sreq This logs the progress of netfs_read_subrequest objects, which track the contributions from various sources to a read request. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-and-tested-by: Jeff Layton <jlayton@kernel.org> Tested-by: Dave Wysochanski <dwysocha@redhat.com> Tested-By: Marc Dionne <marc.dionne@auristor.com> cc: Matthew Wilcox <willy@infradead.org> cc: linux-mm@kvack.org cc: linux-cachefs@redhat.com cc: linux-afs@lists.infradead.org cc: linux-nfs@vger.kernel.org cc: linux-cifs@vger.kernel.org cc: ceph-devel@vger.kernel.org cc: v9fs-developer@lists.sourceforge.net cc: linux-fsdevel@vger.kernel.org Link: https://lore.kernel.org/r/161118138060.1232039.5353374588021776217.stgit@warthog.procyon.org.uk/ # rfc Link: https://lore.kernel.org/r/161161033468.2537118.14021843889844001905.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/161340395843.1303470.7355519662919639648.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/161539538693.286939.10171713520419106334.stgit@warthog.procyon.org.uk/ # v4 Link: https://lore.kernel.org/r/161653796447.2770958.1870655382450862155.stgit@warthog.procyon.org.uk/ # v5 Link: https://lore.kernel.org/r/161789078003.6155.17814844411672989942.stgit@warthog.procyon.org.uk/ # v6 |
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Johannes Thumshirn | 18bb8bbf13 |
btrfs: zoned: automatically reclaim zones
When a file gets deleted on a zoned file system, the space freed is not returned back into the block group's free space, but is migrated to zone_unusable. As this zone_unusable space is behind the current write pointer it is not possible to use it for new allocations. In the current implementation a zone is reset once all of the block group's space is accounted as zone unusable. This behaviour can lead to premature ENOSPC errors on a busy file system. Instead of only reclaiming the zone once it is completely unusable, kick off a reclaim job once the amount of unusable bytes exceeds a user configurable threshold between 51% and 100%. It can be set per mounted filesystem via the sysfs tunable bg_reclaim_threshold which is set to 75% by default. Similar to reclaiming unused block groups, these dirty block groups are added to a to_reclaim list and then on a transaction commit, the reclaim process is triggered but after we deleted unused block groups, which will free space for the relocation process. Reviewed-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
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Geliang Tang | d96a838a7c |
mptcp: add tracepoint in subflow_check_data_avail
This patch added a tracepoint in subflow_check_data_avail() to show the mapping status. Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Geliang Tang <geliangtang@gmail.com> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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Geliang Tang | ed66bfb4ce |
mptcp: add tracepoint in ack_update_msk
This patch added a tracepoint in ack_update_msk() to track the incoming data_ack and window/snd_una updates. Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Geliang Tang <geliangtang@gmail.com> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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Geliang Tang | 0918e34b85 |
mptcp: add tracepoint in get_mapping_status
This patch added a tracepoint in the mapping status function get_mapping_status() to dump every mpext field. Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Geliang Tang <geliangtang@gmail.com> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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Geliang Tang | e10a989209 |
mptcp: add tracepoint in mptcp_subflow_get_send
This patch added a tracepoint in the packet scheduler function mptcp_subflow_get_send(). Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Geliang Tang <geliangtang@gmail.com> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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Jeffle Xu | 907d523100 |
block: add queue_to_disk() to get gendisk from request_queue
Sometimes we need to get the corresponding gendisk from request_queue.
It is preferred that block drivers store private data in
gendisk->private_data rather than request_queue->queuedata, e.g. see:
commit
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Jens Axboe | 7471e1afab |
io_uring: include cflags in completion trace event
We should be including the completion flags for better introspection on exactly what completion event was logged. Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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Ingo Molnar | 120b566d1d |
Merge branch 'for-mingo-rcu' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU changes from Paul E. McKenney: - Bitmap support for "N" as alias for last bit - kvfree_rcu updates - mm_dump_obj() updates. (One of these is to mm, but was suggested by Andrew Morton.) - RCU callback offloading update - Polling RCU grace-period interfaces - Realtime-related RCU updates - Tasks-RCU updates - Torture-test updates - Torture-test scripting updates - Miscellaneous fixes Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Eric Biggers | 118a4417e1 |
random: remove dead code left over from blocking pool
Remove some dead code that was left over following commit
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David S. Miller | efd13b71a3 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Signed-off-by: David S. Miller <davem@davemloft.net> |
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Chuck Lever | 7dcfbd86ad |
SUNRPC: Export svc_xprt_received()
Prepare svc_xprt_received() to be called from transport code instead of from generic RPC server code. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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Steven Rostedt (VMware) | 83b62687a0 |
workqueue/tracing: Copy workqueue name to buffer in trace event
The trace event "workqueue_queue_work" references an unsafe string in
dereferencing the name of the workqueue. As the name is allocated, it
could later be freed, and the pointer to that string could stay on the
tracing buffer. If the trace buffer is read after the string is freed, it
will reference an unsafe pointer.
I added a new verifier to make sure that all strings referenced in the
output of the trace buffer is safe to read and this triggered on the
workqueue_queue_work trace event:
workqueue_queue_work: work struct=00000000b2b235c7 function=gc_worker workqueue=(0xffff888100051160:events_power_efficient)[UNSAFE-MEMORY] req_cpu=256 cpu=1
workqueue_queue_work: work struct=00000000c344caec function=flush_to_ldisc workqueue=(0xffff888100054d60:events_unbound)[UNSAFE-MEMORY] req_cpu=256 cpu=4294967295
workqueue_queue_work: work struct=00000000b2b235c7 function=gc_worker workqueue=(0xffff888100051160:events_power_efficient)[UNSAFE-MEMORY] req_cpu=256 cpu=1
workqueue_queue_work: work struct=000000000b238b3f function=vmstat_update workqueue=(0xffff8881000c3760:mm_percpu_wq)[UNSAFE-MEMORY] req_cpu=1 cpu=1
Also, if this event is read via a user space application like perf or
trace-cmd, the name would only be an address and useless information:
workqueue_queue_work: work struct=0xffff953f80b4b918 function=disk_events_workfn workqueue=ffff953f8005d378 req_cpu=8192 cpu=5
Cc: Zqiang <qiang.zhang@windriver.com>
Cc: Tejun Heo <tj@kernel.org>
Fixes:
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Sangmoon Kim | 565cfb9e64 |
rcu/tree: Add a trace event for RCU CPU stall warnings
This commit adds a trace event which allows tracing the beginnings of RCU CPU stall warnings on systems where sysctl_panic_on_rcu_stall is disabled. The first parameter is the name of RCU flavor like other trace events. The second parameter indicates whether this is a stall of an expedited grace period, a self-detected stall of a normal grace period, or a stall of a normal grace period detected by some CPU other than the one that is stalled. RCU CPU stall warnings are often caused by external-to-RCU issues, for example, in interrupt handling or task scheduling. Therefore, this event uses TRACE_EVENT, not TRACE_EVENT_RCU, to avoid requiring those interested in tracing RCU CPU stalls to rebuild their kernels with CONFIG_RCU_TRACE=y. Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Reviewed-by: Neeraj Upadhyay <neeraju@codeaurora.org> Signed-off-by: Sangmoon Kim <sangmoon.kim@samsung.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> |
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David S. Miller | c1acda9807 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Alexei Starovoitov says: ==================== pull-request: bpf-next 2021-03-09 The following pull-request contains BPF updates for your *net-next* tree. We've added 90 non-merge commits during the last 17 day(s) which contain a total of 114 files changed, 5158 insertions(+), 1288 deletions(-). The main changes are: 1) Faster bpf_redirect_map(), from Björn. 2) skmsg cleanup, from Cong. 3) Support for floating point types in BTF, from Ilya. 4) Documentation for sys_bpf commands, from Joe. 5) Support for sk_lookup in bpf_prog_test_run, form Lorenz. 6) Enable task local storage for tracing programs, from Song. 7) bpf_for_each_map_elem() helper, from Yonghong. ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
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Björn Töpel | ee75aef23a |
bpf, xdp: Restructure redirect actions
The XDP_REDIRECT implementations for maps and non-maps are fairly similar, but obviously need to take different code paths depending on if the target is using a map or not. Today, the redirect targets for XDP either uses a map, or is based on ifindex. Here, the map type and id are added to bpf_redirect_info, instead of the actual map. Map type, map item/ifindex, and the map_id (if any) is passed to xdp_do_redirect(). For ifindex-based redirect, used by the bpf_redirect() XDP BFP helper, a special map type/id are used. Map type of UNSPEC together with map id equal to INT_MAX has the special meaning of an ifindex based redirect. Note that valid map ids are 1 inclusive, INT_MAX exclusive ([1,INT_MAX[). In addition to making the code easier to follow, using explicit type and id in bpf_redirect_info has a slight positive performance impact by avoiding a pointer indirection for the map type lookup, and instead use the cacheline for bpf_redirect_info. Since the actual map is not passed via bpf_redirect_info anymore, the map lookup is only done in the BPF helper. This means that the bpf_clear_redirect_map() function can be removed. The actual map item is RCU protected. The bpf_redirect_info flags member is not used by XDP, and not read/written any more. The map member is only written to when required/used, and not unconditionally. Signed-off-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Acked-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://lore.kernel.org/bpf/20210308112907.559576-3-bjorn.topel@gmail.com |
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Nadav Amit | 4ce94eabac |
x86/mm/tlb: Flush remote and local TLBs concurrently
To improve TLB shootdown performance, flush the remote and local TLBs concurrently. Introduce flush_tlb_multi() that does so. Introduce paravirtual versions of flush_tlb_multi() for KVM, Xen and hyper-v (Xen and hyper-v are only compile-tested). While the updated smp infrastructure is capable of running a function on a single local core, it is not optimized for this case. The multiple function calls and the indirect branch introduce some overhead, and might make local TLB flushes slower than they were before the recent changes. Before calling the SMP infrastructure, check if only a local TLB flush is needed to restore the lost performance in this common case. This requires to check mm_cpumask() one more time, but unless this mask is updated very frequently, this should impact performance negatively. Signed-off-by: Nadav Amit <namit@vmware.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Michael Kelley <mikelley@microsoft.com> # Hyper-v parts Reviewed-by: Juergen Gross <jgross@suse.com> # Xen and paravirt parts Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com> Link: https://lore.kernel.org/r/20210220231712.2475218-5-namit@vmware.com |
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Adrian Hunter | f7733625ec |
scsi: ufs: Add exception event tracepoint
Currently, exception event status can be read from wExceptionEventStatus attribute (sysfs file attributes/exception_event_status under the UFS host controller device directory). Polling that attribute to track UFS exception events is impractical, so add a tracepoint to track exception events for testing and debugging purposes. Note, by the time the exception event status is read, the exception event may have cleared, so the value can be zero - see example below. Note also, only enabled exception events can be reported. A subsequent patch adds the ability for users to enable selected exception events via debugfs. Example with driver instrumented to enable all exception events: # echo 1 > /sys/kernel/debug/tracing/events/ufs/ufshcd_exception_event/enable ... do some I/O ... # cat /sys/kernel/debug/tracing/trace # tracer: nop # # entries-in-buffer/entries-written: 3/3 #P:5 # # _-----=> irqs-off # / _----=> need-resched # | / _---=> hardirq/softirq # || / _--=> preempt-depth # ||| / delay # TASK-PID CPU# |||| TIMESTAMP FUNCTION # | | | |||| | | kworker/2:2-173 [002] .... 731.486419: ufshcd_exception_event: 0000:00:12.5: status 0x0 kworker/2:2-173 [002] .... 732.608918: ufshcd_exception_event: 0000:00:12.5: status 0x4 kworker/2:2-173 [002] .... 732.609312: ufshcd_exception_event: 0000:00:12.5: status 0x4 Link: https://lore.kernel.org/r/20210209062437.6954-2-adrian.hunter@intel.com Reviewed-by: Avri Altman <avri.altman@wdc.com> Reviewed-by: Bean Huo <beanhuo@micron.com> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> |
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Linus Torvalds | 3ab6608e66 |
block-5.12-2021-02-27
-----BEGIN PGP SIGNATURE----- iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAmA6njIQHGF4Ym9lQGtl cm5lbC5kawAKCRD301j7KXHgprolD/9zWti9LsZvA7yE+PhVwrwF3CsNzLfQlClw 99HaA7HxtAc/VLJrnD/SubhCAPdBC5B2xPv6faajdwF2iUR3Rr1Uc93CQ3uP2KKq kvm6ALTpzPTMI6YSABhY74sg9BkkoDbMo54JQYVQPleiE+5eDLbuFZck6ObfUHyY a4aaImlndWp/t14GzrClL4hucF+5KJy846P+QCVclkh0yl8xSsqZ5LIFU7tu3iQb HpZ5HKLT/2ma/EOr3wknnsIe97AUZQU0q5aMparhYlm+qR511eop3QXx850FL/oC tEGceKLij6qazmkiocKVzML8Fs+Y9/a4vCMjLCScWJmzDlmKdlH2uudeahN6b9Hm 15qRQHOjl1Hc2bdr5ZVn87nq9RWhSm18C+SRMwOKHCOnEhwxqM3RjRfAgj4BJ6QB PFbFqdY+8Y1YLPFmn9hph72ePaEcN4L2IXW6TI/WX8mot8ODAnkq9Hr38dKwzO+i 0mon6DVyJKKho6XwvVu5IYurkR2beQprjeVUxwZjjT6DxUgsc+J6itK5LDHFSkeZ qZlXn5Di8MkiXg0DFJYDQiFXnO0Z5GlRWOGPVfBaOr3x+1dqzDdHGw4oz1oGqvnr GNNYCsYIpDGm7eauX5lqL5MUFpjqRCceXy5JSHPhnWWw617nYkr4H9jdsV9HiTX1 tQFx05QW3w== =ccMs -----END PGP SIGNATURE----- Merge tag 'block-5.12-2021-02-27' of git://git.kernel.dk/linux-block Pull more block updates from Jens Axboe: "A few stragglers (and one due to me missing it originally), and fixes for changes in this merge window mostly. In particular: - blktrace cleanups (Chaitanya, Greg) - Kill dead blk_pm_* functions (Bart) - Fixes for the bio alloc changes (Christoph) - Fix for the partition changes (Christoph, Ming) - Fix for turning off iopoll with polled IO inflight (Jeffle) - nbd disconnect fix (Josef) - loop fsync error fix (Mauricio) - kyber update depth fix (Yang) - max_sectors alignment fix (Mikulas) - Add bio_max_segs helper (Matthew)" * tag 'block-5.12-2021-02-27' of git://git.kernel.dk/linux-block: (21 commits) block: Add bio_max_segs blktrace: fix documentation for blk_fill_rw() block: memory allocations in bounce_clone_bio must not fail block: remove the gfp_mask argument to bounce_clone_bio block: fix bounce_clone_bio for passthrough bios block-crypto-fallback: use a bio_set for splitting bios block: fix logging on capacity change blk-settings: align max_sectors on "logical_block_size" boundary block: reopen the device in blkdev_reread_part block: don't skip empty device in in disk_uevent blktrace: remove debugfs file dentries from struct blk_trace nbd: handle device refs for DESTROY_ON_DISCONNECT properly kyber: introduce kyber_depth_updated() loop: fix I/O error on fsync() in detached loop devices block: fix potential IO hang when turning off io_poll block: get rid of the trace rq insert wrapper blktrace: fix blk_rq_merge documentation blktrace: fix blk_rq_issue documentation blktrace: add blk_fill_rwbs documentation comment block: remove superfluous param in blk_fill_rwbs() ... |
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Linus Torvalds | 8b1e2c50bc |
Tracing: Fixes for 5.12
Two fixes: - Fix an unsafe printf string usage in a kmem trace event - Fix spelling in output from the latency-collector tool -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCYDhhwBQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qtclAQCztNe2l9UrmkADtaJNHOcmujRvxi+9 j0ppoSe7uKI4zAD+JVG40IyxvprfxengjmwIdvihL+uuWL50ULmvozRdzQM= =8nVm -----END PGP SIGNATURE----- Merge tag 'trace-v5.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing fixes from Steven Rostedt: "Two fixes: - Fix an unsafe printf string usage in a kmem trace event - Fix spelling in output from the latency-collector tool" * tag 'trace-v5.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing/tools: fix a couple of spelling mistakes mm, tracing: Fix kmem_cache_free trace event to not print stale pointers |
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Linus Torvalds | 245137cdf0 |
Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton: "118 patches: - The rest of MM. Includes kfence - another runtime memory validator. Not as thorough as KASAN, but it has unmeasurable overhead and is intended to be usable in production builds. - Everything else Subsystems affected by this patch series: alpha, procfs, sysctl, misc, core-kernel, MAINTAINERS, lib, bitops, checkpatch, init, coredump, seq_file, gdb, ubsan, initramfs, and mm (thp, cma, vmstat, memory-hotplug, mlock, rmap, zswap, zsmalloc, cleanups, kfence, kasan2, and pagemap2)" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (118 commits) MIPS: make userspace mapping young by default initramfs: panic with memory information ubsan: remove overflow checks kgdb: fix to kill breakpoints on initmem after boot scripts/gdb: fix list_for_each x86: fix seq_file iteration for pat/memtype.c seq_file: document how per-entry resources are managed. fs/coredump: use kmap_local_page() init/Kconfig: fix a typo in CC_VERSION_TEXT help text init: clean up early_param_on_off() macro init/version.c: remove Version_<LINUX_VERSION_CODE> symbol checkpatch: do not apply "initialise globals to 0" check to BPF progs checkpatch: don't warn about colon termination in linker scripts checkpatch: add kmalloc_array_node to unnecessary OOM message check checkpatch: add warning for avoiding .L prefix symbols in assembly files checkpatch: improve TYPECAST_INT_CONSTANT test message checkpatch: prefer ftrace over function entry/exit printks checkpatch: trivial style fixes checkpatch: ignore warning designated initializers using NR_CPUS checkpatch: improve blank line after declaration test ... |
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Alexander Potapenko | 9c0dee54eb |
tracing: add error_report_end trace point
Patch series "Add error_report_end tracepoint to KFENCE and KASAN", v3. This patchset adds a tracepoint, error_repor_end, that is to be used by KFENCE, KASAN, and potentially other bug detection tools, when they print an error report. One of the possible use cases is userspace collection of kernel error reports: interested parties can subscribe to the tracing event via tracefs, and get notified when an error report occurs. This patch (of 3): Introduce error_report_end tracepoint. It can be used in debugging tools like KASAN, KFENCE, etc. to provide extensions to the error reporting mechanisms (e.g. allow tests hook into error reporting, ease error report collection from production kernels). Another benefit would be making use of ftrace for debugging or benchmarking the tools themselves. Should we need it, the tracepoint name leaves us with the possibility to introduce a complementary error_report_start tracepoint in the future. Link: https://lkml.kernel.org/r/20210121131915.1331302-1-glider@google.com Link: https://lkml.kernel.org/r/20210121131915.1331302-2-glider@google.com Signed-off-by: Alexander Potapenko <glider@google.com> Suggested-by: Marco Elver <elver@google.com> Cc: Andrey Konovalov <andreyknvl@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Petr Mladek <pmladek@suse.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linus Torvalds | 1c9077cdec |
NFS Client Updates for Linux 5.12
- New Features: - Support for eager writes, and the write=eager and write=wait mount options - Other Bugfixes and Cleanups: - Fix typos in some comments - Fix up fall-through warnings for Clang - Cleanups to the NFS readpage codepath - Remove FMR support in rpcrdma_convert_iovs() - Various other cleanups to xprtrdma - Fix xprtrdma pad optimization for servers that don't support RFC 8797 - Improvements to rpcrdma tracepoints - Fix up nfs4_bitmask_adjust() - Optimize sparse writes past the end of files -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEnZ5MQTpR7cLU7KEp18tUv7ClQOsFAmAwOLwACgkQ18tUv7Cl QOsUfw//W2KoJ+2IQohQNFcoi+bG1OQE7jnqHtQ+tsKfpJKemcDcu8wQEAqrwALg vXioG1Ye0QU7P5PZtNxCorylqSTVGvJSIOrfa3lTdn/PDbI7NIgN52w56TzzfeXn pJ4gDwZzPwUFUblF0LBQUIhJv5IQvOXVgUsMqezbIbMXSiuLR/bjnZ96Q/woKpoL eg2IZ5EO9Jb0QjuQ1e9U303X7c2qOl1jzpxyQLQfD7ONnWBx3HnJk1l+3JJRi8JV smnae3I0L3nUZ7rBqoqsvK7YUjUchCEBvkmEMsnHT94D5tI9mxxX5OquREee6QHn NuJRSNbsIiCD3Ne27fkCut78d6SetoMko7jZ97T6smhyijtXJiLG/6dycMPV9rt/ bVIudWMm9/A9AsXyY2YP5LC6Y6W6dhQRXygUjVgEPBl6kVsb2Eca8IA9QZghF9IL +XSEulASvxo2rWPylJJ+3aLynfqoHrowVN/Tu61svDnJWTcb+FCxQ5zyLox7erEH mUhraf1D0uoX9odH1069toN6favZFE6SIDvlUk1QTOjr6p3Jxmkuyl6PNs5t66/S 550z5JVb2deIHOPQxOie7xz/Dk6dnRoaFhTNq/Ootkt9GNe0A+NqSUdoRA5XxN5m wW11ecLSZSehDksuXjyFmkHtkagLreFxLsHbVnaAtwEm7h/thRI= =Dssn -----END PGP SIGNATURE----- Merge tag 'nfs-for-5.12-1' of git://git.linux-nfs.org/projects/anna/linux-nfs Pull NFS Client Updates from Anna Schumaker: "New Features: - Support for eager writes, and the write=eager and write=wait mount options - Other Bugfixes and Cleanups: - Fix typos in some comments - Fix up fall-through warnings for Clang - Cleanups to the NFS readpage codepath - Remove FMR support in rpcrdma_convert_iovs() - Various other cleanups to xprtrdma - Fix xprtrdma pad optimization for servers that don't support RFC 8797 - Improvements to rpcrdma tracepoints - Fix up nfs4_bitmask_adjust() - Optimize sparse writes past the end of files" * tag 'nfs-for-5.12-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (27 commits) NFS: Support the '-owrite=' option in /proc/self/mounts and mountinfo NFS: Set the stable writes flag when initialising the super block NFS: Add mount options supporting eager writes NFS: Add support for eager writes NFS: 'flags' field should be unsigned in struct nfs_server NFS: Don't set NFS_INO_INVALID_XATTR if there is no xattr cache NFS: Always clear an invalid mapping when attempting a buffered write NFS: Optimise sparse writes past the end of file NFS: Fix documenting comment for nfs_revalidate_file_size() NFSv4: Fixes for nfs4_bitmask_adjust() xprtrdma: Clean up rpcrdma_prepare_readch() rpcrdma: Capture bytes received in Receive completion tracepoints xprtrdma: Pad optimization, revisited rpcrdma: Fix comments about reverse-direction operation xprtrdma: Refactor invocations of offset_in_page() xprtrdma: Simplify rpcrdma_convert_kvec() and frwr_map() xprtrdma: Remove FMR support in rpcrdma_convert_iovs() NFS: Add nfs_pageio_complete_read() and remove nfs_readpage_async() NFS: Call readpage_async_filler() from nfs_readpage_async() NFS: Refactor nfs_readpage() and nfs_readpage_async() to use nfs_readdesc ... |
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Steven Rostedt (VMware) | d814567942 |
mm, tracing: Fix kmem_cache_free trace event to not print stale pointers
The update to kmem_cache_free trace event added printing of the slab name in
the trace event. But it only stores the pointer of the name which will be
printed as a string when the event is read some time in the future. This is
dangerous because the name could be freed in the mean time and when reading
the trace event it would try to dereference the string name by the pointer
to the name that has been freed.
Instead, use the trace event helper macros __string(), __assign_str(), and
__get_str() that are for this very case.
Cc: Jacob Wen <jian.w.wen@oracle.com>
Fixes:
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Yu Zhao | 861404536a |
mm/swap.c: don't pass "enum lru_list" to trace_mm_lru_insertion()
The parameter is redundant in the sense that it can be extracted from the "struct page" parameter by page_lru() correctly. Link: https://lore.kernel.org/linux-mm/20201207220949.830352-5-yuzhao@google.com/ Link: https://lkml.kernel.org/r/20210122220600.906146-5-yuzhao@google.com Signed-off-by: Yu Zhao <yuzhao@google.com> Reviewed-by: Alex Shi <alex.shi@linux.alibaba.com> Cc: Hugh Dickins <hughd@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Roman Gushchin <guro@fb.com> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Jacob Wen | 3544de8ee6 |
mm, tracing: record slab name for kmem_cache_free()
Currently, a trace record generated by the RCU core is as below. ... kmem_cache_free: call_site=rcu_core+0x1fd/0x610 ptr=00000000f3b49a66 It doesn't tell us what the RCU core has freed. This patch adds the slab name to trace_kmem_cache_free(). The new format is as follows. ... kmem_cache_free: call_site=rcu_core+0x1fd/0x610 ptr=0000000037f79c8d name=dentry ... kmem_cache_free: call_site=rcu_core+0x1fd/0x610 ptr=00000000f78cb7b5 name=sock_inode_cache ... kmem_cache_free: call_site=rcu_core+0x1fd/0x610 ptr=0000000018768985 name=pool_workqueue ... kmem_cache_free: call_site=rcu_core+0x1fd/0x610 ptr=000000006a6cb484 name=radix_tree_node We can use it to understand what the RCU core is going to free. For example, some users maybe interested in when the RCU core starts freeing reclaimable slabs like dentry to reduce memory pressure. Link: https://lkml.kernel.org/r/20201216072804.8838-1-jian.w.wen@oracle.com Signed-off-by: Jacob Wen <jian.w.wen@oracle.com> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.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 | ac9e806c9c |
Merge branch 'for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
Pull qorkqueue updates from Tejun Heo: "Tracepoint and comment updates only" * 'for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: workqueue: Use %s instead of function name workqueue: tracing the name of the workqueue instead of it's address workqueue: fix annotation for WQ_SYSFS |
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Linus Torvalds | c958423470 |
Tracing updates for 5.12
- Update to the way irqs and preemption is tracked via the trace event PC field - Fix handling of unregistering event failing due to allocate memory. This is only triggered by failure injection, as it is pretty much guaranteed to have less than a page allocation succeed. - Do not show the useless "filter" or "enable" files for the "ftrace" trace system, as they have no effect on doing anything. - Add a warning if kprobes are registered more than once. - Synthetic events now have their fields parsed by semicolons. Old formats without semicolons will still work, but new features will require them. - New option to allow trace events to show %p without hashing in trace file. The trace file can only be read by root, and reading the raw event buffer did not have any pointers hashed, so this does not expose anything new. - New directory in tools called tools/tracing, where a new tool that reads sequential latency reports from the ftrace latency tracers. - Other minor fixes and cleanups. -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCYDL2wBQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qti6AP0RUcSU5U1onx8DcwPQLC5Xr3CPqJkm RvKeJDdgFP+sVgEAiMTFsy2UMc0gmlHZMFd5nZLSiJCu1I2hHmhS5yKbHgY= =fD9+ -----END PGP SIGNATURE----- Merge tag 'trace-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing updates from Steven Rostedt: - Update to the way irqs and preemption is tracked via the trace event PC field - Fix handling of unregistering event failing due to allocate memory. This is only triggered by failure injection, as it is pretty much guaranteed to have less than a page allocation succeed. - Do not show the useless "filter" or "enable" files for the "ftrace" trace system, as they have no effect on doing anything. - Add a warning if kprobes are registered more than once. - Synthetic events now have their fields parsed by semicolons. Old formats without semicolons will still work, but new features will require them. - New option to allow trace events to show %p without hashing in trace file. The trace file can only be read by root, and reading the raw event buffer did not have any pointers hashed, so this does not expose anything new. - New directory in tools called tools/tracing, where a new tool that reads sequential latency reports from the ftrace latency tracers. - Other minor fixes and cleanups. * tag 'trace-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (33 commits) kprobes: Fix to delay the kprobes jump optimization tracing/tools: Add the latency-collector to tools directory tracing: Make hash-ptr option default tracing: Add ptr-hash option to show the hashed pointer value tracing: Update the stage 3 of trace event macro comment tracing: Show real address for trace event arguments selftests/ftrace: Add '!event' synthetic event syntax check selftests/ftrace: Update synthetic event syntax errors tracing: Add a backward-compatibility check for synthetic event creation tracing: Update synth command errors tracing: Rework synthetic event command parsing tracing/dynevent: Delegate parsing to create function kprobes: Warn if the kprobe is reregistered ftrace: Remove unused ftrace_force_update() tracepoints: Code clean up tracepoints: Do not punish non static call users tracepoints: Remove unnecessary "data_args" macro parameter tracing: Do not create "enable" or "filter" files for ftrace event subsystem kernel: trace: preemptirq_delay_test: add cpu affinity tracepoint: Do not fail unregistering a probe due to memory failure ... |
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Linus Torvalds | d652ea30ba |
IOMMU Updates for Linux v5.12
Including: - ARM SMMU and Mediatek updates from Will Deacon: - Support for MT8192 IOMMU from Mediatek - Arm v7s io-pgtable extensions for MT8192 - Removal of TLBI_ON_MAP quirk - New Qualcomm compatible strings - Allow SVA without hardware broadcast TLB maintenance on SMMUv3 - Virtualization Host Extension support for SMMUv3 (SVA) - Allow SMMUv3 PMU (perf) driver to be built independently from IOMMU - Some tidy-up in IOVA and core code - Conversion of the AMD IOMMU code to use the generic IO-page-table framework - Intel VT-d updates from Lu Baolu: - Audit capability consistency among different IOMMUs - Add SATC reporting structure support - Add iotlb_sync_map callback support - SDHI Support for Renesas IOMMU driver - Misc Cleanups and other small improvments -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEr9jSbILcajRFYWYyK/BELZcBGuMFAmAz2AcACgkQK/BELZcB GuMflRAAyOfXzFqfmniYKxXmxAhOIlibCoojXzecItifdyaFkvUhxCadRg5u3dLH IeACDvUiaA5VQnVhjI0a7gCckKdq5YDwwAS+GQICUKNEZtWwrHwm2QTRBmL9MOlA v+iTrhYCqZWIAPe16BP5L4u6q4JWS2N9oNmDp6ia1VIhPjfsHU+gXpYKSxiLicmV VECAHJk5/JrwKXBP2nMg3ZqGz9RoJc2CzC4zvKu7ADDB9Zl+pXs74mb4ta81Y3G4 vf07G/ORYJjbMskz5KcmYw2897I9ejMrNaHrYNjlh2IDpGqmoCJ4+8vuVO0zslrm GzMOHMshaI653BmuRDHyczwNrNxMxSX3NOeR2fp76d3MSouK7RoFMr7ghMAegp1u qmSrqFbgnOT4cdzN8QpPyU22lmVHtQHm0P4EpZZzC95dtJo1nzt8BFrDjPdJDOyZ D7oKvZq+OA6MtjCN4gZ2ClxQoiUZ8E/jP1uGIknpzR1oeWnyEFtx8aI9q4yRjNcp n8UR7wFqbOIV0O/QC7UlEp/xSpG7BDN4BkvIgbH2qe6LmRmejCrnUWv6pkmPc9sI wFgV/Qnh9oo7yf6zvmCsi1r0kmfGLPRe8GB9+eN3wY3xxzDOLJEJNdVghWaP8Rz7 MBcL/0u8+fMfQlRiOPX64BSIF7fFPY0r0+erINawf1VUbyjUsUE= =xSX1 -----END PGP SIGNATURE----- Merge tag 'iommu-updates-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull iommu updates from Joerg Roedel: - ARM SMMU and Mediatek updates from Will Deacon: - Support for MT8192 IOMMU from Mediatek - Arm v7s io-pgtable extensions for MT8192 - Removal of TLBI_ON_MAP quirk - New Qualcomm compatible strings - Allow SVA without hardware broadcast TLB maintenance on SMMUv3 - Virtualization Host Extension support for SMMUv3 (SVA) - Allow SMMUv3 PMU perf driver to be built independently from IOMMU - Some tidy-up in IOVA and core code - Conversion of the AMD IOMMU code to use the generic IO-page-table framework - Intel VT-d updates from Lu Baolu: - Audit capability consistency among different IOMMUs - Add SATC reporting structure support - Add iotlb_sync_map callback support - SDHI support for Renesas IOMMU driver - Misc cleanups and other small improvments * tag 'iommu-updates-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (94 commits) iommu/amd: Fix performance counter initialization MAINTAINERS: repair file pattern in MEDIATEK IOMMU DRIVER iommu/mediatek: Fix error code in probe() iommu/mediatek: Fix unsigned domid comparison with less than zero iommu/vt-d: Parse SATC reporting structure iommu/vt-d: Add new enum value and structure for SATC iommu/vt-d: Add iotlb_sync_map callback iommu/vt-d: Move capability check code to cap_audit files iommu/vt-d: Audit IOMMU Capabilities and add helper functions iommu/vt-d: Fix 'physical' typos iommu: Properly pass gfp_t in _iommu_map() to avoid atomic sleeping iommu/vt-d: Fix compile error [-Werror=implicit-function-declaration] driver/perf: Remove ARM_SMMU_V3_PMU dependency on ARM_SMMU_V3 MAINTAINERS: Add entry for MediaTek IOMMU iommu/mediatek: Add mt8192 support iommu/mediatek: Remove unnecessary check in attach_device iommu/mediatek: Support master use iova over 32bit iommu/mediatek: Add iova reserved function iommu/mediatek: Support for multi domains iommu/mediatek: Add get_domain_id from dev->dma_range_map ... |