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Daniel Borkmann says:
====================
pull-request: bpf-next 2018-02-26
The following pull-request contains BPF updates for your *net-next* tree.
The main changes are:
1) Various improvements for BPF kselftests: i) skip unprivileged tests
when kernel.unprivileged_bpf_disabled sysctl knob is set, ii) count
the number of skipped tests from unprivileged, iii) when a test case
had an unexpected error then print the actual but also the unexpected
one for better comparison, from Joe.
2) Add a sample program for collecting CPU state statistics with regards
to how long the CPU resides in cstate and pstate levels. Based on
cpu_idle and cpu_frequency trace points, from Leo.
3) Various x64 BPF JIT optimizations to further shrink the generated
image size in order to make it more icache friendly. When tested on
the Cilium generated programs, image size reduced by approx 4-5% in
best case mainly due to how LLVM emits unsigned 32 bit constants,
from Daniel.
4) Improvements and fixes on the BPF sockmap sample programs: i) fix
the sockmap's Makefile to include nlattr.o for libbpf, ii) detach
the sock ops programs from the cgroup before exit, from Prashant.
5) Avoid including xdp.h in filter.h by just forward declaring the
struct xdp_rxq_info in filter.h, from Jesper.
6) Fix the BPF kselftests Makefile for cgroup_helpers.c by only declaring
it a dependency for test_dev_cgroup.c but not every other test case
where it is not needed, from Jesper.
7) Adjust rlimit RLIMIT_MEMLOCK for test_tcpbpf_user selftest since the
default is insufficient for creating the 'global_map' used in the
corresponding BPF program, from Yonghong.
8) Likewise, for the xdp_redirect sample, Tushar ran into the same when
invoking xdp_redirect and xdp_monitor at the same time, therefore
in order to have the sample generically work bump the limit here,
too. Fix from Tushar.
9) Avoid an unnecessary NULL check in BPF_CGROUP_RUN_PROG_INET_SOCK()
since sk is always guaranteed to be non-NULL, from Yafang.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull arm64 fixes from Catalin Marinas:
"arm64 and perf fixes:
- build error when accessing MPIDR_HWID_BITMASK from .S
- fix CTR_EL0 field definitions
- remove/disable some kernel messages on user faults (unhandled
signals, unimplemented syscalls)
- fix kernel page fault in unwind_frame() with function graph tracing
- fix perf sleeping while atomic errors when booting with ACPI"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: fix unwind_frame() for filtered out fn for function graph tracing
arm64: Enforce BBM for huge IO/VMAP mappings
arm64: perf: correct PMUVer probing
arm_pmu: acpi: request IRQs up-front
arm_pmu: note IRQs and PMUs per-cpu
arm_pmu: explicitly enable/disable SPIs at hotplug
arm_pmu: acpi: check for mismatched PPIs
arm_pmu: add armpmu_alloc_atomic()
arm_pmu: fold platform helpers into platform code
arm_pmu: kill arm_pmu_platdata
ARM: ux500: remove PMU IRQ bouncer
arm64: __show_regs: Only resolve kernel symbols when running at EL1
arm64: Remove unimplemented syscall log message
arm64: Disable unhandled signal log messages by default
arm64: cpufeature: Fix CTR_EL0 field definitions
arm64: uaccess: Formalise types for access_ok()
arm64: Fix compilation error while accessing MPIDR_HWID_BITMASK from .S files
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Pull drm fixes from Dave Airlie:
"A bunch of fixes for rc3:
Exynos:
- fixes for using monotonic timestamps
- register definitions
- removal of unused file
ipu-v3L
- minor changes
- make some register arrays const+static
- fix some leaks
meson:
- fix for vsync
atomic:
- fix for memory leak
EDID parser:
- add quirks for some more non-desktop devices
- 6-bit panel fix.
drm_mm:
- fix a bug in the core drm mm hole handling
cirrus:
- fix lut loading regression
Lastly there is a deadlock fix around runtime suspend for secondary
GPUs.
There was a deadlock between one thread trying to wait for a workqueue
job to finish in the runtime suspend path, and the workqueue job it
was waiting for in turn waiting for a runtime_get_sync to return.
The fixes avoids it by not doing the runtime sync in the workqueue as
then we always wait for all those tasks to complete before we runtime
suspend"
* tag 'drm-fixes-for-v4.16-rc3' of git://people.freedesktop.org/~airlied/linux: (25 commits)
drm/tve200: fix kernel-doc documentation comment include
drm/edid: quirk Sony PlayStation VR headset as non-desktop
drm/edid: quirk Windows Mixed Reality headsets as non-desktop
drm/edid: quirk Oculus Rift headsets as non-desktop
drm/meson: fix vsync buffer update
drm: Handle unexpected holes in color-eviction
drm: exynos: Use proper macro definition for HDMI_I2S_PIN_SEL_1
drm/exynos: remove exynos_drm_rotator.h
drm/exynos: g2d: Delete an error message for a failed memory allocation in two functions
drm/exynos: fix comparison to bitshift when dealing with a mask
drm/exynos: g2d: use monotonic timestamps
drm/edid: Add 6 bpc quirk for CPT panel in Asus UX303LA
gpu: ipu-csi: add 10/12-bit grayscale support to mbus_code_to_bus_cfg
gpu: ipu-cpmem: add 16-bit grayscale support to ipu_cpmem_set_image
gpu: ipu-v3: prg: fix device node leak in ipu_prg_lookup_by_phandle
gpu: ipu-v3: pre: fix device node leak in ipu_pre_lookup_by_phandle
drm/amdgpu: Fix deadlock on runtime suspend
drm/radeon: Fix deadlock on runtime suspend
drm/nouveau: Fix deadlock on runtime suspend
drm: Allow determining if current task is output poll worker
...
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sk is already allocated in inet_create/inet6_create, hence when
BPF_CGROUP_RUN_PROG_INET_SOCK is executed sk will never be NULL.
The logic is as bellow,
sk = sk_alloc();
if (!sk)
goto out;
BPF_CGROUP_RUN_PROG_INET_SOCK(sk);
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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Johannes Berg says:
====================
Various updates across wireless.
One thing to note: I've included a new ethertype
that wireless uses (ETH_P_PREAUTH) in if_ether.h.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Extracting the TID from the QOS header is common enough
to justify helper.
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Saeed Mahameed says:
====================
mlx5-updates-2018-02-21
This series includes shared code updates for mlx5 core driver for both
netdev and rdma subsystems.
By Saeed,
First six patches of the series are meant to address a performance issue
and should provide a performance boost for multi core IRQ interrupt hungry
workloads. The issue is fixed in the first patch, all other patches are
meant to refactor the code in light of this fix.
The problem it comes to fix, is a shared spinlock accessed across all HCA
IRQs which protects the CQ database. To solve this we simply move the CQ
database and its spinlock to be per EQ (IRQ), thus per core.
By Yonatan,
Fragmented completion queue (CQ) for RDMA,
core driver implementation to create fragmented CQ buffers rather than
one large contiguous memory buffer, the implementation scheme already
exist and used by the netdev CQs, the patch shares that code with the
rdma CQ creation flow and makes use of the new API in mlx5_ib driver.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Merge misc fixes from Andrew Morton:
"16 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
mm: don't defer struct page initialization for Xen pv guests
lib/Kconfig.debug: enable RUNTIME_TESTING_MENU
vmalloc: fix __GFP_HIGHMEM usage for vmalloc_32 on 32b systems
selftests/memfd: add run_fuse_test.sh to TEST_FILES
bug.h: work around GCC PR82365 in BUG()
mm/swap.c: make functions and their kernel-doc agree (again)
mm/zpool.c: zpool_evictable: fix mismatch in parameter name and kernel-doc
ida: do zeroing in ida_pre_get()
mm, swap, frontswap: fix THP swap if frontswap enabled
certs/blacklist_nohashes.c: fix const confusion in certs blacklist
kernel/relay.c: limit kmalloc size to KMALLOC_MAX_SIZE
mm, mlock, vmscan: no more skipping pagevecs
mm: memcontrol: fix NR_WRITEBACK leak in memcg and system stats
Kbuild: always define endianess in kconfig.h
include/linux/sched/mm.h: re-inline mmdrop()
tools: fix cross-compile var clobbering
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Each read from a file in efivarfs results in two calls to EFI
(one to get the file size, another to get the actual data).
On X86 these EFI calls result in broadcast system management
interrupts (SMI) which affect performance of the whole system.
A malicious user can loop performing reads from efivarfs bringing
the system to its knees.
Linus suggested per-user rate limit to solve this.
So we add a ratelimit structure to "user_struct" and initialize
it for the root user for no limit. When allocating user_struct for
other users we set the limit to 100 per second. This could be used
for other places that want to limit the rate of some detrimental
user action.
In efivarfs if the limit is exceeded when reading, we take an
interruptible nap for 50ms and check the rate limit again.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The header files for some structures could get included in such a way
that struct attributes (specifically __randomize_layout from path.h) would
be parsed as variable names instead of attributes. This could lead to
some instances of a structure being unrandomized, causing nasty GPFs, etc.
This patch makes sure the compiler_types.h header is included in
kconfig.h so that we've always got types and struct attributes defined,
since kconfig.h is included from the compiler command line.
Reported-by: Patrick McLean <chutzpah@gentoo.org>
Root-caused-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Tested-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
Fixes: 3859a271a003 ("randstruct: Mark various structs for randomization")
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Looking at functions with large stack frames across all architectures
led me discovering that BUG() suffers from the same problem as
fortify_panic(), which I've added a workaround for already.
In short, variables that go out of scope by calling a noreturn function
or __builtin_unreachable() keep using stack space in functions
afterwards.
A workaround that was identified is to insert an empty assembler
statement just before calling the function that doesn't return. I'm
adding a macro "barrier_before_unreachable()" to document this, and
insert calls to that in all instances of BUG() that currently suffer
from this problem.
The files that saw the largest change from this had these frame sizes
before, and much less with my patch:
fs/ext4/inode.c:82:1: warning: the frame size of 1672 bytes is larger than 800 bytes [-Wframe-larger-than=]
fs/ext4/namei.c:434:1: warning: the frame size of 904 bytes is larger than 800 bytes [-Wframe-larger-than=]
fs/ext4/super.c:2279:1: warning: the frame size of 1160 bytes is larger than 800 bytes [-Wframe-larger-than=]
fs/ext4/xattr.c:146:1: warning: the frame size of 1168 bytes is larger than 800 bytes [-Wframe-larger-than=]
fs/f2fs/inode.c:152:1: warning: the frame size of 1424 bytes is larger than 800 bytes [-Wframe-larger-than=]
net/netfilter/ipvs/ip_vs_core.c:1195:1: warning: the frame size of 1068 bytes is larger than 800 bytes [-Wframe-larger-than=]
net/netfilter/ipvs/ip_vs_core.c:395:1: warning: the frame size of 1084 bytes is larger than 800 bytes [-Wframe-larger-than=]
net/netfilter/ipvs/ip_vs_ftp.c:298:1: warning: the frame size of 928 bytes is larger than 800 bytes [-Wframe-larger-than=]
net/netfilter/ipvs/ip_vs_ftp.c:418:1: warning: the frame size of 908 bytes is larger than 800 bytes [-Wframe-larger-than=]
net/netfilter/ipvs/ip_vs_lblcr.c:718:1: warning: the frame size of 960 bytes is larger than 800 bytes [-Wframe-larger-than=]
drivers/net/xen-netback/netback.c:1500:1: warning: the frame size of 1088 bytes is larger than 800 bytes [-Wframe-larger-than=]
In case of ARC and CRIS, it turns out that the BUG() implementation
actually does return (or at least the compiler thinks it does),
resulting in lots of warnings about uninitialized variable use and
leaving noreturn functions, such as:
block/cfq-iosched.c: In function 'cfq_async_queue_prio':
block/cfq-iosched.c:3804:1: error: control reaches end of non-void function [-Werror=return-type]
include/linux/dmaengine.h: In function 'dma_maxpq':
include/linux/dmaengine.h:1123:1: error: control reaches end of non-void function [-Werror=return-type]
This makes them call __builtin_trap() instead, which should normally
dump the stack and kill the current process, like some of the other
architectures already do.
I tried adding barrier_before_unreachable() to panic() and
fortify_panic() as well, but that had very little effect, so I'm not
submitting that patch.
Vineet said:
: For ARC, it is double win.
:
: 1. Fixes 3 -Wreturn-type warnings
:
: | ../net/core/ethtool.c:311:1: warning: control reaches end of non-void function
: [-Wreturn-type]
: | ../kernel/sched/core.c:3246:1: warning: control reaches end of non-void function
: [-Wreturn-type]
: | ../include/linux/sunrpc/svc_xprt.h:180:1: warning: control reaches end of
: non-void function [-Wreturn-type]
:
: 2. bloat-o-meter reports code size improvements as gcc elides the
: generated code for stack return.
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82365
Link: http://lkml.kernel.org/r/20171219114112.939391-1-arnd@arndb.de
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Vineet Gupta <vgupta@synopsys.com> [arch/arc]
Tested-by: Vineet Gupta <vgupta@synopsys.com> [arch/arc]
Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Christopher Li <sparse@chrisli.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: "Steven Rostedt (VMware)" <rostedt@goodmis.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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When a thread mlocks an address space backed either by file pages which
are currently not present in memory or swapped out anon pages (not in
swapcache), a new page is allocated and added to the local pagevec
(lru_add_pvec), I/O is triggered and the thread then sleeps on the page.
On I/O completion, the thread can wake on a different CPU, the mlock
syscall will then sets the PageMlocked() bit of the page but will not be
able to put that page in unevictable LRU as the page is on the pagevec
of a different CPU. Even on drain, that page will go to evictable LRU
because the PageMlocked() bit is not checked on pagevec drain.
The page will eventually go to right LRU on reclaim but the LRU stats
will remain skewed for a long time.
This patch puts all the pages, even unevictable, to the pagevecs and on
the drain, the pages will be added on their LRUs correctly by checking
their evictability. This resolves the mlocked pages on pagevec of other
CPUs issue because when those pagevecs will be drained, the mlocked file
pages will go to unevictable LRU. Also this makes the race with munlock
easier to resolve because the pagevec drains happen in LRU lock.
However there is still one place which makes a page evictable and does
PageLRU check on that page without LRU lock and needs special attention.
TestClearPageMlocked() and isolate_lru_page() in clear_page_mlock().
#0: __pagevec_lru_add_fn #1: clear_page_mlock
SetPageLRU() if (!TestClearPageMlocked())
return
smp_mb() // <--required
// inside does PageLRU
if (!PageMlocked()) if (isolate_lru_page())
move to evictable LRU putback_lru_page()
else
move to unevictable LRU
In '#1', TestClearPageMlocked() provides full memory barrier semantics
and thus the PageLRU check (inside isolate_lru_page) can not be
reordered before it.
In '#0', without explicit memory barrier, the PageMlocked() check can be
reordered before SetPageLRU(). If that happens, '#0' can put a page in
unevictable LRU and '#1' might have just cleared the Mlocked bit of that
page but fails to isolate as PageLRU fails as '#0' still hasn't set
PageLRU bit of that page. That page will be stranded on the unevictable
LRU.
There is one (good) side effect though. Without this patch, the pages
allocated for System V shared memory segment are added to evictable LRUs
even after shmctl(SHM_LOCK) on that segment. This patch will correctly
put such pages to unevictable LRU.
Link: http://lkml.kernel.org/r/20171121211241.18877-1-shakeelb@google.com
Signed-off-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Greg Thelen <gthelen@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Shaohua Li <shli@fb.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Hugh Dickins <hughd@google.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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After commit a983b5ebee57 ("mm: memcontrol: fix excessive complexity in
memory.stat reporting"), we observed slowly upward creeping NR_WRITEBACK
counts over the course of several days, both the per-memcg stats as well
as the system counter in e.g. /proc/meminfo.
The conversion from full per-cpu stat counts to per-cpu cached atomic
stat counts introduced an irq-unsafe RMW operation into the updates.
Most stat updates come from process context, but one notable exception
is the NR_WRITEBACK counter. While writebacks are issued from process
context, they are retired from (soft)irq context.
When writeback completions interrupt the RMW counter updates of new
writebacks being issued, the decs from the completions are lost.
Since the global updates are routed through the joint lruvec API, both
the memcg counters as well as the system counters are affected.
This patch makes the joint stat and event API irq safe.
Link: http://lkml.kernel.org/r/20180203082353.17284-1-hannes@cmpxchg.org
Fixes: a983b5ebee57 ("mm: memcontrol: fix excessive complexity in memory.stat reporting")
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Debugged-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Rik van Riel <riel@surriel.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Build testing with LTO found a couple of files that get compiled
differently depending on whether asm/byteorder.h gets included early
enough or not. In particular, include/asm-generic/qrwlock_types.h is
affected by this, but there are probably others as well.
The symptom is a series of LTO link time warnings, including these:
net/netlabel/netlabel_unlabeled.h:223: error: type of 'netlbl_unlhsh_add' does not match original declaration [-Werror=lto-type-mismatch]
int netlbl_unlhsh_add(struct net *net,
net/netlabel/netlabel_unlabeled.c:377: note: 'netlbl_unlhsh_add' was previously declared here
include/net/ipv6.h:360: error: type of 'ipv6_renew_options_kern' does not match original declaration [-Werror=lto-type-mismatch]
ipv6_renew_options_kern(struct sock *sk,
net/ipv6/exthdrs.c:1162: note: 'ipv6_renew_options_kern' was previously declared here
net/core/dev.c:761: note: 'dev_get_by_name_rcu' was previously declared here
struct net_device *dev_get_by_name_rcu(struct net *net, const char *name)
net/core/dev.c:761: note: code may be misoptimized unless -fno-strict-aliasing is used
drivers/gpu/drm/i915/i915_drv.h:3377: error: type of 'i915_gem_object_set_to_wc_domain' does not match original declaration [-Werror=lto-type-mismatch]
i915_gem_object_set_to_wc_domain(struct drm_i915_gem_object *obj, bool write);
drivers/gpu/drm/i915/i915_gem.c:3639: note: 'i915_gem_object_set_to_wc_domain' was previously declared here
include/linux/debugfs.h:92:9: error: type of 'debugfs_attr_read' does not match original declaration [-Werror=lto-type-mismatch]
ssize_t debugfs_attr_read(struct file *file, char __user *buf,
fs/debugfs/file.c:318: note: 'debugfs_attr_read' was previously declared here
include/linux/rwlock_api_smp.h:30: error: type of '_raw_read_unlock' does not match original declaration [-Werror=lto-type-mismatch]
void __lockfunc _raw_read_unlock(rwlock_t *lock) __releases(lock);
kernel/locking/spinlock.c:246:26: note: '_raw_read_unlock' was previously declared here
include/linux/fs.h:3308:5: error: type of 'simple_attr_open' does not match original declaration [-Werror=lto-type-mismatch]
int simple_attr_open(struct inode *inode, struct file *file,
fs/libfs.c:795: note: 'simple_attr_open' was previously declared here
All of the above are caused by include/asm-generic/qrwlock_types.h
failing to include asm/byteorder.h after commit e0d02285f16e
("locking/qrwlock: Use 'struct qrwlock' instead of 'struct __qrwlock'")
in linux-4.15.
Similar bugs may or may not exist in older kernels as well, but there is
no easy way to test those with link-time optimizations, and kernels
before 4.14 are harder to fix because they don't have Babu's patch
series
We had similar issues with CONFIG_ symbols in the past and ended up
always including the configuration headers though linux/kconfig.h. This
works around the issue through that same file, defining either
__BIG_ENDIAN or __LITTLE_ENDIAN depending on CONFIG_CPU_BIG_ENDIAN,
which is now always set on all architectures since commit 4c97a0c8fee3
("arch: define CPU_BIG_ENDIAN for all fixed big endian archs").
Link: http://lkml.kernel.org/r/20180202154104.1522809-2-arnd@arndb.de
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Babu Moger <babu.moger@amd.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Nicolas Pitre <nico@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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As Peter points out, Doing a CALL+RET for just the decrement is a bit silly.
Fixes: d70f2a14b72a4bc ("include/linux/sched/mm.h: uninline mmdrop_async(), etc")
Acked-by: Peter Zijlstra (Intel) <peterz@infraded.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Fixes for 4.16. I contains fixes for deadlock on runtime suspend on few
drivers, a memory leak on non-blocking commits, a crash on color-eviction.
The is also meson and edid fixes, plus a fix for a doc warning.
* tag 'drm-misc-fixes-2018-02-21' of git://anongit.freedesktop.org/drm/drm-misc:
drm/tve200: fix kernel-doc documentation comment include
drm/meson: fix vsync buffer update
drm: Handle unexpected holes in color-eviction
drm/edid: Add 6 bpc quirk for CPT panel in Asus UX303LA
drm/amdgpu: Fix deadlock on runtime suspend
drm/radeon: Fix deadlock on runtime suspend
drm/nouveau: Fix deadlock on runtime suspend
drm: Allow determining if current task is output poll worker
workqueue: Allow retrieval of current task's work struct
drm/atomic: Fix memleak on ERESTARTSYS during non-blocking commits
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We take net_mutex, when there are !async pernet_operations
registered, and read locking of net_sem is not enough. But
we may get rid of taking the mutex, and just change the logic
to write lock net_sem in such cases. This obviously reduces
the number of lock operations, we do.
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We can't request IRQs in atomic context, so for ACPI systems we'll have
to request them up-front, and later associate them with CPUs.
This patch reorganises the arm_pmu code to do so. As we no longer have
the arm_pmu structure at probe time, a number of prototypes need to be
adjusted, requiring changes to the common arm_pmu code and arm_pmu
platform code.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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To support ACPI systems, we need to request IRQs before we know the
associated PMU, and thus we need some percpu variable that the IRQ
handler can find the PMU from.
As we're going to request IRQs without the PMU, we can't rely on the
arm_pmu::active_irqs mask, and similarly need to track requested IRQs
with a percpu variable.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
[will: made armpmu_count_irq_users static]
Signed-off-by: Will Deacon <will.deacon@arm.com>
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In ACPI systems, we don't know the makeup of CPUs until we hotplug them
on, and thus have to allocate the PMU datastructures at hotplug time.
Thus, we must use GFP_ATOMIC allocations.
Let's add an armpmu_alloc_atomic() that we can use in this case.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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The armpmu_{request,free}_irqs() helpers are only used by
arm_pmu_platform.c, so let's fold them in and make them static.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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Now that we have no platforms passing platform data to the arm_pmu code,
we can get rid of the platdata and associated hooks, paving the way for
rework of our IRQ handling.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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Pull networking fixes from David Miller:
1) Prevent index integer overflow in ptr_ring, from Jason Wang.
2) Program mvpp2 multicast filter properly, from Mikulas Patocka.
3) The bridge brport attribute file is write only and doesn't have a
->show() method, don't blindly invoke it. From Xin Long.
4) Inverted mask used in genphy_setup_forced(), from Ingo van Lil.
5) Fix multiple definition issue with if_ether.h UAPI header, from
Hauke Mehrtens.
6) Fix GFP_KERNEL usage in atomic in RDS protocol code, from Sowmini
Varadhan.
7) Revert XDP redirect support from thunderx driver, it is not
implemented properly. From Jesper Dangaard Brouer.
8) Fix missing RTNL protection across some tipc operations, from Ying
Xue.
9) Return the correct IV bytes in the TLS getsockopt code, from Boris
Pismenny.
10) Take tclassid into consideration properly when doing FIB rule
matching. From Stefano Brivio.
11) cxgb4 device needs more PCI VPD quirks, from Casey Leedom.
12) TUN driver doesn't align frags properly, and we can end up doing
unaligned atomics on misaligned metadata. From Eric Dumazet.
13) Fix various crashes found using DEBUG_PREEMPT in rmnet driver, from
Subash Abhinov Kasiviswanathan.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (56 commits)
tg3: APE heartbeat changes
mlxsw: spectrum_router: Do not unconditionally clear route offload indication
net: qualcomm: rmnet: Fix possible null dereference in command processing
net: qualcomm: rmnet: Fix warning seen with 64 bit stats
net: qualcomm: rmnet: Fix crash on real dev unregistration
sctp: remove the left unnecessary check for chunk in sctp_renege_events
rxrpc: Work around usercopy check
tun: fix tun_napi_alloc_frags() frag allocator
udplite: fix partial checksum initialization
skbuff: Fix comment mis-spelling.
dn_getsockoptdecnet: move nf_{get/set}sockopt outside sock lock
PCI/cxgb4: Extend T3 PCI quirk to T4+ devices
cxgb4: fix trailing zero in CIM LA dump
cxgb4: free up resources of pf 0-3
fib_semantics: Don't match route with mismatching tclassid
NFC: llcp: Limit size of SDP URI
tls: getsockopt return record sequence number
tls: reset the crypto info if copy_from_user fails
tls: retrun the correct IV in getsockopt
docs: segmentation-offloads.txt: add SCTP info
...
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Because READ_ONCE() now implies smp_read_barrier_depends(), the
smp_read_barrier_depends() in __ptr_ring_consume() is redundant;
this commit removes it and updates the comments.
Signed-off-by: Andrea Parri <parri.andrea@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: <linux-kernel@vger.kernel.org>
Cc: <netdev@vger.kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Increase the PMK maximum length to 64 bytes to accommodate
the key length used in DPP with the NIST P-521 and
Brainpool 512 curves.
Signed-off-by: Srinivas Dasari <dasaris@codeaurora.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Pull core fix from Thomas Gleixner:
"A small fix which adds the missing for_each_cpu_wrap() stub for the UP
case to avoid build failures"
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
cpumask: Make for_each_cpu_wrap() available on UP as well
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Pull block fixes from Jens Axboe:
- NVMe pull request from Keith, with fixes all over the map for nvme.
From various folks.
- Classic polling fix, that avoids a latency issue where we still end
up waiting for an interrupt in some cases. From Nitesh Shetty.
- Comment typo fix from Minwoo Im.
* tag 'for-linus-20180217' of git://git.kernel.dk/linux-block:
block: fix a typo in comment of BLK_MQ_POLL_STATS_BKTS
nvme-rdma: fix sysfs invoked reset_ctrl error flow
nvmet: Change return code of discard command if not supported
nvme-pci: Fix timeouts in connecting state
nvme-pci: Remap CMB SQ entries on every controller reset
nvme: fix the deadlock in nvme_update_formats
blk: optimization for classic polling
nvme: Don't use a stack buffer for keep-alive command
nvme_fc: cleanup io completion
nvme_fc: correct abort race condition on resets
nvme: Fix discard buffer overrun
nvme: delete NVME_CTRL_LIVE --> NVME_CTRL_CONNECTING transition
nvme-rdma: use NVME_CTRL_CONNECTING state to mark init process
nvme: rename NVME_CTRL_RECONNECTING state to NVME_CTRL_CONNECTING
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Introduce a helper to retrieve the current task's work struct if it is
a workqueue worker.
This allows us to fix a long-standing deadlock in several DRM drivers
wherein the ->runtime_suspend callback waits for a specific worker to
finish and that worker in turn calls a function which waits for runtime
suspend to finish. That function is invoked from multiple call sites
and waiting for runtime suspend to finish is the correct thing to do
except if it's executing in the context of the worker.
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Link: https://patchwork.freedesktop.org/patch/msgid/2d8f603074131eb87e588d2b803a71765bd3a2fd.1518338788.git.lukas@wunner.de
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RDS would like to use the helper functions for managing pinned pages
added by Commit a91dbff551a6 ("sock: ulimit on MSG_ZEROCOPY pages")
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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'peform' --> 'perform'
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull dma-mapping fixes from Christoph Hellwig:
"A few dma-mapping fixes for the fallout from the changes in rc1"
* tag 'dma-mapping-4.16-2' of git://git.infradead.org/users/hch/dma-mapping:
powerpc/macio: set a proper dma_coherent_mask
dma-mapping: fix a comment typo
dma-direct: comment the dma_direct_free calling convention
dma-direct: mark as is_phys
ia64: fix build failure with CONFIG_SWIOTLB
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for_each_cpu_wrap() was originally added in the #else half of a
large "#if NR_CPUS == 1" statement, but was omitted in the #if
half. This patch adds the missing #if half to prevent compile
errors when NR_CPUS is 1.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Michael Kelley <mhkelley@outlook.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: kys@microsoft.com
Cc: martin.petersen@oracle.com
Cc: mikelley@microsoft.com
Fixes: c743f0a5c50f ("sched/fair, cpumask: Export for_each_cpu_wrap()")
Link: http://lkml.kernel.org/r/SN6PR1901MB2045F087F59450507D4FCC17CBF50@SN6PR1901MB2045.namprd19.prod.outlook.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Pull ACPI fixes from Rafael Wysocki:
"These fix a system resume regression from the 4.13 cycle, clean up
device table handling in the ACPI core, update sysfs ABI documentation
of a couple of drivers and add an expected switch fall-through marker
to the SPCR table parsing code.
Specifics:
- Revert a problematic EC driver change from the 4.13 cycle that
introduced a system resume regression on Thinkpad X240 (Rafael
Wysocki).
- Clean up device tables handling in the ACPI core and the related
part of the device properties framework (Andy Shevchenko).
- Update the sysfs ABI documentatio of the dock and the INT3407
special device drivers (Aishwarya Pant).
- Add an expected switch fall-through marker to the SPCR table
parsing code (Gustavo Silva)"
* tag 'acpi-4.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: dock: document sysfs interface
ACPI / DPTF: Document dptf_power sysfs atttributes
device property: Constify device_get_match_data()
ACPI / bus: Rename acpi_get_match_data() to acpi_device_get_match_data()
ACPI / bus: Remove checks in acpi_get_match_data()
ACPI / bus: Do not traverse through non-existed device table
ACPI: SPCR: Mark expected switch fall-through in acpi_parse_spcr
ACPI / EC: Restore polling during noirq suspend/resume phases
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Pull power management fixes from Rafael Wysocki:
"These fix a recently introduced build issue related to cpuidle and two
bugs in the PM core, update cpuidle documentation and clean up memory
allocations in the operating performance points (OPP) framework.
Specifics:
- Fix a recently introduced build issue related to cpuidle by
covering all of the relevant combinations of Kconfig options
in its header (Rafael Wysocki).
- Add missing invocation of pm_runtime_drop_link() to the
!CONFIG_SRCU variant of __device_link_del() (Lukas Wunner).
- Fix unbalanced IRQ enable in the wakeup interrupts framework
(Tony Lindgren).
- Update cpuidle sysfs ABI documentation (Aishwarya Pant).
- Use GFP_KERNEL instead of GFP_ATOMIC for allocating memory
in dev_pm_opp_init_cpufreq_table() (Jia-Ju Bai)"
* tag 'pm-4.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM: cpuidle: Fix cpuidle_poll_state_init() prototype
PM / runtime: Update links_count also if !CONFIG_SRCU
PM / wakeirq: Fix unbalanced IRQ enable for wakeirq
Documentation/ABI: update cpuidle sysfs documentation
opp: cpu: Replace GFP_ATOMIC with GFP_KERNEL in dev_pm_opp_init_cpufreq_table
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This function will be used to obtain net of tun device.
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull locking fixes from Ingo Molnar:
"This contains two qspinlock fixes and three documentation and comment
fixes"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/semaphore: Update the file path in documentation
locking/atomic/bitops: Document and clarify ordering semantics for failed test_and_{}_bit()
locking/qspinlock: Ensure node->count is updated before initialising node
locking/qspinlock: Ensure node is initialised before updating prev->next
Documentation/locking/mutex-design: Update to reflect latest changes
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Update comment typo _consisitent_ to _consistent_ from following commit.
commit 0206319fdfee ("blk-mq: Fix poll_stat for new size-based bucketing.")
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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* pm-cpuidle:
PM: cpuidle: Fix cpuidle_poll_state_init() prototype
Documentation/ABI: update cpuidle sysfs documentation
* pm-opp:
opp: cpu: Replace GFP_ATOMIC with GFP_KERNEL in dev_pm_opp_init_cpufreq_table
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The current implementation of create CQ requires contiguous
memory, such requirement is problematic once the memory is
fragmented or the system is low in memory, it causes for
failures in dma_zalloc_coherent().
This patch implements new scheme of fragmented CQ to overcome
this issue by introducing new type: 'struct mlx5_frag_buf_ctrl'
to allocate fragmented buffers, rather than contiguous ones.
Base the Completion Queues (CQs) on this new fragmented buffer.
It fixes following crashes:
kworker/29:0: page allocation failure: order:6, mode:0x80d0
CPU: 29 PID: 8374 Comm: kworker/29:0 Tainted: G OE 3.10.0
Workqueue: ib_cm cm_work_handler [ib_cm]
Call Trace:
[<>] dump_stack+0x19/0x1b
[<>] warn_alloc_failed+0x110/0x180
[<>] __alloc_pages_slowpath+0x6b7/0x725
[<>] __alloc_pages_nodemask+0x405/0x420
[<>] dma_generic_alloc_coherent+0x8f/0x140
[<>] x86_swiotlb_alloc_coherent+0x21/0x50
[<>] mlx5_dma_zalloc_coherent_node+0xad/0x110 [mlx5_core]
[<>] ? mlx5_db_alloc_node+0x69/0x1b0 [mlx5_core]
[<>] mlx5_buf_alloc_node+0x3e/0xa0 [mlx5_core]
[<>] mlx5_buf_alloc+0x14/0x20 [mlx5_core]
[<>] create_cq_kernel+0x90/0x1f0 [mlx5_ib]
[<>] mlx5_ib_create_cq+0x3b0/0x4e0 [mlx5_ib]
Signed-off-by: Yonatan Cohen <yonatanc@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
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EQ structure and API is private to mlx5_core driver only, external
drivers should not have access or the means to manipulate EQ objects.
Remove redundant exports and move API functions out of the linux/mlx5
include directory into the driver's mlx5_core.h private include file.
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Gal Pressman <galp@mellanox.com>
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Since CQ tree is now per EQ, CQ completion and event forwarding became
specific implementation of EQ logic, this patch moves that logic to eq.c
and makes those functions static.
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Gal Pressman <galp@mellanox.com>
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Now as the CQ table is per EQ, add an API to hold/put CQ to be used from
eq.c in downstream patch.
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Gal Pressman <galp@mellanox.com>
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Before this patch the driver had one CQ database protected via one
spinlock, this spinlock is meant to synchronize between CQ
adding/removing and CQ IRQ interrupt handling.
On a system with large number of CPUs and on a work load that requires
lots of interrupts, this global spinlock becomes a very nasty hotspot
and introduces a contention between the active cores, which will
significantly hurt performance and becomes a bottleneck that prevents
seamless cpu scaling.
To solve this we simply move the CQ database and its spinlock to be per
EQ (IRQ), thus per core.
Tested with:
system: 2 sockets, 14 cores per socket, hyperthreading, 2x14x2=56 cores
netperf command: ./super_netperf 200 -P 0 -t TCP_RR -H <server> -l 30 -- -r 300,300 -o -s 1M,1M -S 1M,1M
WITHOUT THIS PATCH:
Average: CPU %usr %nice %sys %iowait %irq %soft %steal %guest %gnice %idle
Average: all 4.32 0.00 36.15 0.09 0.00 34.02 0.00 0.00 0.00 25.41
Samples: 2M of event 'cycles:pp', Event count (approx.): 1554616897271
Overhead Command Shared Object Symbol
+ 14.28% swapper [kernel.vmlinux] [k] intel_idle
+ 12.25% swapper [kernel.vmlinux] [k] queued_spin_lock_slowpath
+ 10.29% netserver [kernel.vmlinux] [k] queued_spin_lock_slowpath
+ 1.32% netserver [kernel.vmlinux] [k] mlx5e_xmit
WITH THIS PATCH:
Average: CPU %usr %nice %sys %iowait %irq %soft %steal %guest %gnice %idle
Average: all 4.27 0.00 34.31 0.01 0.00 18.71 0.00 0.00 0.00 42.69
Samples: 2M of event 'cycles:pp', Event count (approx.): 1498132937483
Overhead Command Shared Object Symbol
+ 23.33% swapper [kernel.vmlinux] [k] intel_idle
+ 1.69% netserver [kernel.vmlinux] [k] mlx5e_xmit
Tested-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Gal Pressman <galp@mellanox.com>
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Pull x86 fixes from Ingo Molnar:
"Misc fixes all across the map:
- /proc/kcore vsyscall related fixes
- LTO fix
- build warning fix
- CPU hotplug fix
- Kconfig NR_CPUS cleanups
- cpu_has() cleanups/robustification
- .gitignore fix
- memory-failure unmapping fix
- UV platform fix"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm, mm/hwpoison: Don't unconditionally unmap kernel 1:1 pages
x86/error_inject: Make just_return_func() globally visible
x86/platform/UV: Fix GAM Range Table entries less than 1GB
x86/build: Add arch/x86/tools/insn_decoder_test to .gitignore
x86/smpboot: Fix uncore_pci_remove() indexing bug when hot-removing a physical CPU
x86/mm/kcore: Add vsyscall page to /proc/kcore conditionally
vfs/proc/kcore, x86/mm/kcore: Fix SMAP fault when dumping vsyscall user page
x86/Kconfig: Further simplify the NR_CPUS config
x86/Kconfig: Simplify NR_CPUS config
x86/MCE: Fix build warning introduced by "x86: do not use print_symbol()"
x86/cpufeature: Update _static_cpu_has() to use all named variables
x86/cpufeature: Reindent _static_cpu_has()
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Pull x86 PTI and Spectre related fixes and updates from Ingo Molnar:
"Here's the latest set of Spectre and PTI related fixes and updates:
Spectre:
- Add entry code register clearing to reduce the Spectre attack
surface
- Update the Spectre microcode blacklist
- Inline the KVM Spectre helpers to get close to v4.14 performance
again.
- Fix indirect_branch_prediction_barrier()
- Fix/improve Spectre related kernel messages
- Fix array_index_nospec_mask() asm constraint
- KVM: fix two MSR handling bugs
PTI:
- Fix a paranoid entry PTI CR3 handling bug
- Fix comments
objtool:
- Fix paranoid_entry() frame pointer warning
- Annotate WARN()-related UD2 as reachable
- Various fixes
- Add Add Peter Zijlstra as objtool co-maintainer
Misc:
- Various x86 entry code self-test fixes
- Improve/simplify entry code stack frame generation and handling
after recent heavy-handed PTI and Spectre changes. (There's two
more WIP improvements expected here.)
- Type fix for cache entries
There's also some low risk non-fix changes I've included in this
branch to reduce backporting conflicts:
- rename a confusing x86_cpu field name
- de-obfuscate the naming of single-TLB flushing primitives"
* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (41 commits)
x86/entry/64: Fix CR3 restore in paranoid_exit()
x86/cpu: Change type of x86_cache_size variable to unsigned int
x86/spectre: Fix an error message
x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping
selftests/x86/mpx: Fix incorrect bounds with old _sigfault
x86/mm: Rename flush_tlb_single() and flush_tlb_one() to __flush_tlb_one_[user|kernel]()
x86/speculation: Add <asm/msr-index.h> dependency
nospec: Move array_index_nospec() parameter checking into separate macro
x86/speculation: Fix up array_index_nospec_mask() asm constraint
x86/debug: Use UD2 for WARN()
x86/debug, objtool: Annotate WARN()-related UD2 as reachable
objtool: Fix segfault in ignore_unreachable_insn()
selftests/x86: Disable tests requiring 32-bit support on pure 64-bit systems
selftests/x86: Do not rely on "int $0x80" in single_step_syscall.c
selftests/x86: Do not rely on "int $0x80" in test_mremap_vdso.c
selftests/x86: Fix build bug caused by the 5lvl test which has been moved to the VM directory
selftests/x86/pkeys: Remove unused functions
selftests/x86: Clean up and document sscanf() usage
selftests/x86: Fix vDSO selftest segfault for vsyscall=none
x86/entry/64: Remove the unused 'icebp' macro
...
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For architectures providing their own implementation of
array_index_mask_nospec() in asm/barrier.h, attempting to use WARN_ONCE() to
complain about out-of-range parameters using WARN_ON() results in a mess
of mutually-dependent include files.
Rather than unpick the dependencies, simply have the core code in nospec.h
perform the checking for us.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1517840166-15399-1-git-send-email-will.deacon@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
|
|
Jeff Kirsher says:
====================
40GbE Intel Wired LAN Driver Updates 2018-02-14
This patch series enables the new mqprio hardware offload mechanism
creating traffic classes on VFs for XL710 devices. The parameters
needed to configure these traffic classes/queue channels are provides
by the user via the tc tool. A maximum of four traffic classes can be
created on each VF. This patch series also enables application of cloud
filters to each of these traffic classes. The cloud filters are applied
using the tc-flower classifier.
Example:
1. tc qdisc add dev vf0 root mqprio num_tc 4 map 0 0 0 0 1 2 2 3\
queues 2@0 2@2 1@4 1@5 hw 1 mode channel
2. tc qdisc add dev vf0 ingress
3. ethtool -K vf0 hw-tc-offload on
4. ip link set eth0 vf 0 spoofchk off
5. tc filter add dev vf0 protocol ip parent ffff: prio 1 flower dst_ip\
192.168.3.5/32 ip_proto udp dst_port 25 skip_sw hw_tc 2
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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When NET_PTP_CLASSIFY is disabled, a stub function is required in
order that the drivers compile.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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David S. Miller
Linus Torvalds
Yafang Shao
Sara Sharon
Luck, Tony
Kees Cook
Arnd Bergmann
Shakeel Butt
Johannes Weiner
Andrew Morton
Dave Airlie
Kirill Tkhai
Mark Rutland
Andrea Parri
Srinivas Dasari
Lukas Wunner
Sowmini Varadhan
Michael Kelley
Minwoo Im
Rafael J. Wysocki
Yonatan Cohen
Saeed Mahameed
Will Deacon
Andrew Lunn