- 11 Aug, 2021 8 commits
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Arnaldo Carvalho de Melo authored
To get in sync with upstream to help people developing in this branch. Signed-off-by:Arnaldo Carvalho de Melo <acme@redhat.com>
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Adrian Hunter authored
Add a perf test to test the dlfilter C API. A perf.data file is synthesized and then processed by perf script with a dlfilter named dlfilter-test-api-v0.so. Also a C file is compiled to provide a dso to match the synthesized perf.data file. Committer testing: [root@five ~]# perf test dlfilter 72: dlfilter C API : Ok [root@five ~]# perf test -v dlfilter 72: dlfilter C API : --- start --- test child forked, pid 3387712 Checking for gcc Command: gcc --version gcc (GCC) 11.1.1 20210531 (Red Hat 11.1.1-3) Copyright (C) 2021 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. dlfilters path: /var/home/acme/libexec/perf-core/dlfilters Command: gcc -g -o /tmp/dlfilter-test-3387712-prog /tmp/dlfilter-test-3387712-prog.c Creating new host machine structure Command: /var/home/acme/bin/perf script -i /tmp/dlfilter-test-3387712-perf-data --dlfilter /var/home/acme/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so --dlarg first --dlarg 1 --dlarg 4198669 --dlarg 4198662 --dlarg 0 --dlarg last start API filter_event_early API filter_event API stop API Command: /var/home/acme/bin/perf script -i /tmp/dlfilter-test-3387712-perf-data --dlfilter /var/home/acme/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so --dlarg first --dlarg 1 --dlarg 4198669 --dlarg 4198662 --dlarg 1 --dlarg last start API filter_event_early API filter_event API stop API Command: /var/home/acme/bin/perf script -i /tmp/dlfilter-test-3387712-perf-data --dlfilter /var/home/acme/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so --dlarg first --dlarg 1 --dlarg 4198669 --dlarg 4198662 --dlarg 2 --dlarg last start API filter_event_early API stop API test child finished with 0 ---- end ---- dlfilter C API: Ok [root@five ~]# Signed-off-by:
Adrian Hunter <adrian.hunter@intel.com> Tested-by:
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Adrian Hunter authored
Move perf_dlfilters.h in the source tree so that it will be found when building dlfilters as part of the perf build. Signed-off-by:
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Adrian Hunter authored
Like all locally-built programs, dlfilters may need to be re-built if shared libraries they use change. Also there may be unexpected results if the dfilter uses different versions of the shared libraries that perf uses. Note those things in the documentation. Signed-off-by:
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Adrian Hunter authored
The option --list-dlfilters does use a string value. Signed-off-by:
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Adrian Hunter authored
machine_resolve() may have already been called. Test for that to avoid calling it again unnecessarily. Signed-off-by:
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Adrian Hunter authored
perf_dlfilter_fns must not be const, because it is not. Declaring it const can result in it being mapped read-only, causing a segfaullt when it is written. Update documentation accordingly. Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arcLinus Torvalds authored
Pull ARC fixes from Vineet Gupta: - Fix FPU_STATUS update - Update my email address - Other spellos and fixes * tag 'arc-5.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: MAINTAINERS: update Vineet's email address ARC: fp: set FPU_STATUS.FWE to enable FPU_STATUS update on context switch ARC: Fix CONFIG_STACKDEPOT arc: Fix spelling mistake and grammar in Kconfig arc: Prefer unsigned int to bare use of unsigned
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- 10 Aug, 2021 26 commits
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Jin Yao authored
Update JSON metrics for SkyLake Server. Based on TMA metrics 4.21 at 01.org. https://download.01.org/perfmon/ Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@intel.com> Cc: Linux-kernel@vger.kernel.org Cc: Peter Zijlstra <peterz@infradead.org> Link: https //lore.kernel.org/r/20210810020508.31261-7-yao.jin@linux.intel.com Signed-off-by:
Jin Yao <yao.jin@linux.intel.com>
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Jin Yao authored
Update JSON uncore events for SkyLake Server. Based on JSON list v1.24: https://download.01.org/perfmon/SKX/ Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@intel.com> Cc: Linux-kernel@vger.kernel.org Cc: Peter Zijlstra <peterz@infradead.org> Link: https //lore.kernel.org/r/20210810020508.31261-6-yao.jin@linux.intel.com Signed-off-by:
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Jin Yao authored
Update JSON core events for SkyLake Server. Based on JSON list v1.24: https://download.01.org/perfmon/SKX/ Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@intel.com> Cc: Linux-kernel@vger.kernel.org Cc: Peter Zijlstra <peterz@infradead.org> Link: https //lore.kernel.org/r/20210810020508.31261-5-yao.jin@linux.intel.com Signed-off-by:
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Jin Yao authored
Update JSON metrics for CascadeLake Server. Based on TMA metrics 4.21 at 01.org. https://download.01.org/perfmon/ Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@intel.com> Cc: Linux-kernel@vger.kernel.org Cc: Peter Zijlstra <peterz@infradead.org> Link: https //lore.kernel.org/r/20210810020508.31261-4-yao.jin@linux.intel.com Signed-off-by:
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Jin Yao authored
Update JSON uncore events for CascadeLake Server. Based on JSON list v1.11: https://download.01.org/perfmon/CLX/ Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@intel.com> Cc: Linux-kernel@vger.kernel.org Cc: Peter Zijlstra <peterz@infradead.org> Link: https //lore.kernel.org/r/20210810020508.31261-3-yao.jin@linux.intel.com Signed-off-by:
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Jin Yao authored
Update JSON core events for CascadeLake Server. Based on JSON list v1.11: https://download.01.org/perfmon/CLX/Signed-off-by:
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John Garry authored
Add support for system events, along with core and uncore events. Support for a sample PMU is also added. Signed-off-by:
John Garry <john.garry@huawei.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxarm@huawei.com Link: https //lore.kernel.org/r/1627566986-30605-12-git-send-email-john.garry@huawei.com Signed-off-by:
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John Garry authored
Print the SoC name per system event table, which will allow the test SoC be identified by the pmu-events test. Signed-off-by:
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John Garry authored
Function pmu_add_sys_aliases() will be required for the PMU events test for system events aliases, so make it public. Signed-off-by:
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John Garry authored
Add more events to cover the scenarios fixed and also inadvertently broken by commit c47a5599 ("perf tools: Fix pattern matching for same substring in different PMU type") Signed-off-by:
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John Garry authored
Add support to match aliases for uncore PMUs. Since we cannot rely on the PMUs being present on the host system, use fake PMUs. The following conditions in the test are ensures: - Expected count of aliases created - All aliases can be matched to an expected alias in perf_pmu_test_pmu.aliases This will catch the condition fixed in commit c47a5599 ("perf tools: Fix pattern matching for same substring in different PMU type"), where excess events were created for a PMU. It will also fix the scenario inadvertently broken there, where no aliases were created for aliases with multiple tokens. Signed-off-by:
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John Garry authored
Calling pmu_is_uncore() for fake PMUs does not work, as it checks sysfs for the PMU details (which won't exist). Check .is_uncore field instead, which makes sense anyway. Signed-off-by:
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John Garry authored
The current method to test uncore event aliasing is limited, as it relies on the uncore PMU being present in the host system to test. As such, breakages of uncore PMU aliases goes unnoticed. To make this more robust, a new method of testing uncore PMUs with fake PMUs will be used in future. This will be separate to testing core PMU aliases. So make the current test function core PMU only. Uncore PMU alias support will be re-added later. Signed-off-by:
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John Garry authored
Factor out alias test which will be used in multiple places. Also test missing fields. Signed-off-by:
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John Garry authored
Currently all test events are put into arrays of test events. Create pointer arrays of test events instead, so the test events may be referenced later for tighter alias verification. Signed-off-by:
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Linus Torvalds authored
Merge tag 'platform-drivers-x86-v5.14-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 Pull x86 platform driver fixes from Hans de Goede: "Small set of pdx86 fixes for 5.14" * tag 'platform-drivers-x86-v5.14-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: platform/x86: pcengines-apuv2: Add missing terminating entries to gpio-lookup tables platform/x86: Make dual_accel_detect() KIOX010A + KIOX020A detect more robust platform/x86: Add and use a dual_accel_detect() helper
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git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfsLinus Torvalds authored
Pull overlayfs fixes from Miklos Szeredi: "Fix several bugs in overlayfs" * tag 'ovl-fixes-5.14-rc6-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs: ovl: prevent private clone if bind mount is not allowed ovl: fix uninitialized pointer read in ovl_lookup_real_one() ovl: fix deadlock in splice write ovl: skip stale entries in merge dir cache iteration
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John Garry authored
In future to add support for sys events, relocate the core and uncore events to a cpu folder. Signed-off-by:
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John Garry authored
Factor out event comparison which will be used in multiple places. Also test "pmu" and "compat" fields. Signed-off-by:
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John Garry authored
Currently all JSONs and the mapfile for an arch are dependencies for building pmu-events.c The test JSONs are missing as a dependency, so add them. Signed-off-by:
Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxarm@huawei.com Link: http://lore.kernel.org/lkml/90094733-741c-50e5-ac7d-f5640b5f0bdd@huawei.comSigned-off-by:
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Riccardo Mancini authored
This new benchmark finds the total time that is taken to open, mmap, enable, disable, munmap, close an evlist (time taken for new, create_maps, config, delete is not counted in). The evlist can be configured as in perf-record using the -a,-C,-e,-u,--per-thread,-t,-p options. The events can be duplicated in the evlist to quickly test performance with many events using the -n options. Furthermore, also the number of iterations used to calculate the statistics is customizable. Examples: - Open one dummy event system-wide: $ sudo ./perf bench internals evlist-open-close Number of cpus: 4 Number of threads: 1 Number of events: 1 (4 fds) Number of iterations: 100 Average open-close took: 613.870 usec (+- 32.852 usec) - Open the group '{cs,cycles}' on CPU 0 $ sudo ./perf bench internals evlist-open-close -e '{cs,cycles}' -C 0 Number of cpus: 1 Number of threads: 1 Number of events: 2 (2 fds) Number of iterations: 100 Average open-close took: 8503.220 usec (+- 252.652 usec) - Open 10 'cycles' events for user 0, calculate average over 100 runs $ sudo ./perf bench internals evlist-open-close -e cycles -n 10 -u 0 -i 100 Number of cpus: 4 Number of threads: 328 Number of events: 10 (13120 fds) Number of iterations: 100 Average open-close took: 180043.140 usec (+- 2295.889 usec) Committer notes: Replaced a deprecated bzero() call with designated initialized zeroing. Added some missing evlist allocation checks, one noted by Riccardo on the mailing list. Minor cosmetic changes (sent in private). Signed-off-by:Riccardo Mancini <rickyman7@gmail.com> Tested-by:
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Alyssa Ross authored
" -- " is an em dash (—) in asciidoc, so all these examples that were supposed to be producing a literal two dashes were being misrendered. Signed-off-by:
Alyssa Ross <hi@alyssa.is> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210809153226.332545-1-hi@alyssa.isSigned-off-by:
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Miklos Szeredi authored
Add the following checks from __do_loopback() to clone_private_mount() as well: - verify that the mount is in the current namespace - verify that there are no locked children Reported-by:
Alois Wohlschlager <alois1@gmx-topmail.de> Fixes: c771d683 ("vfs: introduce clone_private_mount()") Cc: <stable@vger.kernel.org> # v3.18 Signed-off-by:
Miklos Szeredi <mszeredi@redhat.com>
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Miklos Szeredi authored
One error path can result in release_dentry_name_snapshot() being called before "name" was initialized by take_dentry_name_snapshot(). Fix by moving the release_dentry_name_snapshot() to immediately after the only use. Reported-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
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Miklos Szeredi authored
There's possibility of an ABBA deadlock in case of a splice write to an overlayfs file and a concurrent splice write to a corresponding real file. The call chain for splice to an overlay file: -> do_splice [takes sb_writers on overlay file] -> do_splice_from -> iter_file_splice_write [takes pipe->mutex] -> vfs_iter_write ... -> ovl_write_iter [takes sb_writers on real file] And the call chain for splice to a real file: -> do_splice [takes sb_writers on real file] -> do_splice_from -> iter_file_splice_write [takes pipe->mutex] Syzbot successfully bisected this to commit 82a763e6 ("ovl: simplify file splice"). Fix by reverting the write part of the above commit and by adding missing bits from ovl_write_iter() into ovl_splice_write(). Fixes: 82a763e6 ("ovl: simplify file splice") Reported-and-tested-by: syzbot+579885d1a9a833336209@syzkaller.appspotmail.com Signed-off-by: -
Amir Goldstein authored
On the first getdents call, ovl_iterate() populates the readdir cache with a list of entries, but for upper entries with origin lower inode, p->ino remains zero. Following getdents calls traverse the readdir cache list and call ovl_cache_update_ino() for entries with zero p->ino to lookup the entry in the overlay and return d_ino that is consistent with st_ino. If the upper file was unlinked between the first getdents call and the getdents call that lists the file entry, ovl_cache_update_ino() will not find the entry and fall back to setting d_ino to the upper real st_ino, which is inconsistent with how this object was presented to users. Instead of listing a stale entry with inconsistent d_ino, simply skip the stale entry, which is better for users. xfstest overlay/077 is failing without this patch. Signed-off-by:
Amir Goldstein <amir73il@gmail.com> Link: https://lore.kernel.org/fstests/CAOQ4uxgR_cLnC_vdU5=seP3fwqVkuZM_-WfD6maFTMbMYq=a9w@mail.gmail.com/Signed-off-by:
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- 09 Aug, 2021 6 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroupLinus Torvalds authored
Pull cgroup fix from Tejun Heo: "One commit to fix a possible A-A deadlock around u64_stats_sync on 32bit machines caused by updating it without disabling IRQ when it may be read from IRQ context" * 'for-5.14-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: cgroup: rstat: fix A-A deadlock on 32bit around u64_stats_sync
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Vineet Gupta authored
I'll be leaving Synopsys shortly, but will continue to handle maintenance for the transition period. Signed-off-by:Vineet Gupta <vgupta@kernel.org>
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Leo Yan authored
It's useful to know that the kernel is running in 32-bit or 64-bit mode. E.g. We can decide if perf tool is running in compat mode based on the info. This patch adds an item "kernel_is_64_bit" into session's environment structure perf_env, its value is initialized based on the architecture string. Suggested-by:
Leo Yan <leo.yan@linaro.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Garry <john.garry@huawei.com> Cc: Li Huafei <lihuafei1@huawei.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Riccardo Mancini <rickyman7@gmail.com> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Will Deacon <will@kernel.org> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Cc: russell king <linux@armlinux.org.uk> Link: http://lore.kernel.org/lkml/20210809112727.596876-2-leo.yan@linaro.orgSigned-off-by:
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Leo Yan authored
Since the __sync functions have been removed from perf, it's needless for perf tool to test the feature sync-compare-and-swap. The feature test is not used by any other components, remove it. Signed-off-by:
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Leo Yan authored
Since the __sync functions have been dropped, This patch removes unused build and checking for HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT in perf tool. Signed-off-by:
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Leo Yan authored
Since the function auxtrace_mmap__read_snapshot_head() is exactly same with auxtrace_mmap__read_head(), whether the session is in snapshot mode or not, it's unified to use function auxtrace_mmap__read_head() for reading AUX buffer head. And the function auxtrace_mmap__read_snapshot_head() is unused so this patch removes it. Signed-off-by:
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