- 15 May, 2023 9 commits
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Ian Rogers authored
test__checkevent_config_cache checks the parsing of "L1-dcache-misses/name=cachepmu/". Don't just check that the name is set correctly, also validate the rest of the perf_event_attr for L1-dcache-misses. Reviewed-by:
Kan Liang <kan.liang@linux.intel.com> Signed-off-by:
Ian Rogers <irogers@google.com> Tested-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Ian Rogers authored
Add helper to test the config of an evsel. Dependent on the type of the evsel, mask the config so that high-bits containing the extended PMU type are ignored. Signed-off-by:
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Ian Rogers authored
Rather than skip all tests in test__events_pmu if PMU cpu isn't present, use the per-test valid test. This allows the running of software PMU tests on hybrid and arm systems. Reviewed-by:
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Ian Rogers authored
Parse events for all PMUs, and not just cpu, in test "Parsing of all PMU events from sysfs". Signed-off-by:
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Ian Rogers authored
Previously these constraints were disabled as they contained topdown events. Since: https://lore.kernel.org/all/20230312021543.3060328-9-irogers@google.com/ the topdown events are correctly grouped even if no group exists. This change was created by PR: https://github.com/intel/perfmon/pull/71Signed-off-by:
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Ian Rogers authored
Previously these constraints were disabled as they contained topdown events. Since: https://lore.kernel.org/all/20230312021543.3060328-9-irogers@google.com/ the topdown events are correctly grouped even if no group exists. This change was created by PR: https://github.com/intel/perfmon/pull/71Signed-off-by:
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Ian Rogers authored
Previously these constraints were disabled as they contained topdown events. Since: https://lore.kernel.org/all/20230312021543.3060328-9-irogers@google.com/ the topdown events are correctly grouped even if no group exists. This change was created by PR: https://github.com/intel/perfmon/pull/71Signed-off-by:
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Ian Rogers authored
Previously these constraints were disabled as they contained topdown events. Since: https://lore.kernel.org/all/20230312021543.3060328-9-irogers@google.com/ the topdown events are correctly grouped even if no group exists. This change was created by PR: https://github.com/intel/perfmon/pull/71Signed-off-by:
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Ian Rogers authored
Previously these constraints were disabled as they contained topdown events. Since: https://lore.kernel.org/all/20230312021543.3060328-9-irogers@google.com/ the topdown events are correctly grouped even if no group exists. This change was created by PR: https://github.com/intel/perfmon/pull/71Signed-off-by:
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- 12 May, 2023 5 commits
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Adrian Hunter authored
Print dso offset only for object files, and in those cases force using the dso->long_name if the dso->name starts with '[' or the dso is kcore, in order to avoid special names such as [vdso], or mixing up kcore with vmlinux. Signed-off-by:
Adrian Hunter <adrian.hunter@intel.com> Cc: Changbin Du <changbin.du@huawei.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20230424055107.12105-3-adrian.hunter@intel.comSigned-off-by:
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Adrian Hunter authored
Declare dso const, so that functions can be called with const struct *dso. Signed-off-by:
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Changbin Du authored
This adds a new 'dsoff' field to print dso offset for resolved symbols, and the offset is appended to dso name. Default output: $ perf script ls 2695501 3011030.487017: 500000 cycles: 152cc73ef4b5 get_common_indices.constprop.0+0x155 (/usr/lib/x86_64-linux-gnu/ld-2.31.so) ls 2695501 3011030.487018: 500000 cycles: ffffffff99045b3e [unknown] ([unknown]) ls 2695501 3011030.487018: 500000 cycles: ffffffff9968e107 [unknown] ([unknown]) ls 2695501 3011030.487018: 500000 cycles: ffffffffc1f54afb [unknown] ([unknown]) ls 2695501 3011030.487018: 500000 cycles: ffffffff9968382f [unknown] ([unknown]) ls 2695501 3011030.487019: 500000 cycles: ffffffff99e00094 [unknown] ([unknown]) ls 2695501 3011030.487019: 500000 cycles: 152cc718a8d0 __errno_location@plt+0x0 (/usr/lib/x86_64-linux-gnu/libselinux.so.1) Display 'dsoff' field: $ perf script -F +dsoff ls 2695501 3011030.487017: 500000 cycles: 152cc73ef4b5 get_common_indices.constprop.0+0x155 (/usr/lib/x86_64-linux-gnu/ld-2.31.so+0x1c4b5) ls 2695501 3011030.487018: 500000 cycles: ffffffff99045b3e [unknown] ([unknown]) ls 2695501 3011030.487018: 500000 cycles: ffffffff9968e107 [unknown] ([unknown]) ls 2695501 3011030.487018: 500000 cycles: ffffffffc1f54afb [unknown] ([unknown]) ls 2695501 3011030.487018: 500000 cycles: ffffffff9968382f [unknown] ([unknown]) ls 2695501 3011030.487019: 500000 cycles: ffffffff99e00094 [unknown] ([unknown]) ls 2695501 3011030.487019: 500000 cycles: 152cc718a8d0 __errno_location@plt+0x0 (/usr/lib/x86_64-linux-gnu/libselinux.so.1+0x68d0) ls 2695501 3011030.487019: 500000 cycles: ffffffff992a6db0 [unknown] ([unknown]) Signed-off-by:Changbin Du <changbin.du@huawei.com> Acked-by:
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Changbin Du authored
This adds a helper function map__fprintf_dsoname_dsoff() to print dsoname with optional dso offset. Suggested-by:
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Paran Lee authored
Add RISC-V binutils path on lookup triplets. Reviewed-by:
Palmer Dabbelt <palmer@rivosinc.com> Signed-off-by:
Paran Lee <p4ranlee@gmail.com> Acked-by:
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- 10 May, 2023 24 commits
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Jiri Olsa authored
If 'struct rq' isn't defined in lock_contention.bpf.c then the type for the 'runqueue' variable ends up being a forward declaration (BTF_KIND_FWD) while the kernel has it defined (BTF_KIND_STRUCT). This makes libbpf decide it has incompatible types and then fails to load the BPF skeleton: # perf lock con -ab sleep 1 libbpf: extern (var ksym) 'runqueues': incompatible types, expected [95] fwd rq, but kernel has [55509] struct rq libbpf: failed to load object 'lock_contention_bpf' libbpf: failed to load BPF skeleton 'lock_contention_bpf': -22 Failed to load lock-contention BPF skeleton lock contention BPF setup failed # Add it as an empty struct to satisfy that type verification: # perf lock con -ab sleep 1 contended total wait max wait avg wait type caller 2 50.64 us 25.38 us 25.32 us spinlock tick_do_update_jiffies64+0x25 1 26.18 us 26.18 us 26.18 us spinlock tick_do_update_jiffies64+0x25 # Committer notes: Extracted from a larger patch as Namhyung had already fixed the other issues in e53de7b6 ("perf lock contention: Fix struct rq lock access"). Signed-off-by:Jiri Olsa <jolsa@kernel.org> Tested-by:
Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrii Nakryiko <andrii@kernel.org> Cc: Changbin Du <changbin.du@huawei.com> Cc: Hao Luo <haoluo@google.com> Cc: Ian Rogers <irogers@google.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <song@kernel.org> Cc: Stephane Eranian <eranian@google.com> Cc: Yang Jihong <yangjihong1@huawei.com> Link: https://lore.kernel.org/lkml/ZFVqeKLssg7uzxzI@kravaSigned-off-by:
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James Clark authored
Pre 5.11 kernels don't support 'contextid1' and 'contextid2' so validation would be skipped. By adding an additional check for 'contextid', old kernels will still have validation done even though contextid would either be contextid1 or contextid2. Additionally now that it's possible to override options, an existing bug in the validation is revealed. 'val' is overwritten by the contextid1 validation, and re-used for contextid2 validation causing it to always fail. '!val || val != 0x4' is the same as 'val != 0x4' because 0 is also != 4, so that expression can be simplified and the temp variable not overwritten. Fixes: 35c51f83 ("perf cs-etm: Validate options after applying them") Reviewed-by:
Leo Yan <leo.yan@linaro.org> Signed-off-by:
James Clark <james.clark@arm.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.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: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Will Deacon <will@kernel.org> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/all/20230501073452.GA4660@leoy-yangtze.lan Link: https://lore.kernel.org/r/20230504144822.1938717-1-james.clark@arm.comSigned-off-by:
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James Clark authored
With EXTRA_CFLAGS=-DREFCNT_CHECKING=1 and build-test, some unwrapped map accesses appear. Wrap it in the new accessor to fix the error: error: 'struct perf_cpu_map' has no member named 'map' Signed-off-by:
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Sandipan Das authored
When using the global aggregation mode, running perf script after perf stat record can result in a segmentation fault as seen with commit 8b76a318 ("perf stat: Remove unused perf_counts.aggr field"). Add a basic test to the existing suite of stat-related tests for checking if that workflow runs without erroring out. Signed-off-by:
Sandipan Das <sandipan.das@amd.com> Acked-by:
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Sandipan Das authored
The script command does not support aggregation modes by itself although that can be achieved using post-processing scripts. Because of this, it does not allocate memory for aggregated event values. Upon running perf stat record, the aggregation mode is set in the perf data file. If the mode is AGGR_GLOBAL, the aggregated event values are accessed and this leads to a segmentation fault since these were never allocated to begin with. Set the mode to AGGR_NONE explicitly to avoid this. E.g. $ perf stat record -e cycles true $ perf script Before: Segmentation fault (core dumped) After: CPU THREAD VAL ENA RUN TIME EVENT -1 231919 162831 362069 362069 935289 cycles:u Fixes: 8b76a318 ("perf stat: Remove unused perf_counts.aggr field") Signed-off-by:
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Ian Rogers authored
There are insufficient headers in tools/include to satisfy building BPF programs and their header dependencies. Add the system include paths from the non-BPF clang compile so that these headers can be found. This code was taken from: tools/testing/selftests/bpf/Makefile Committer notes: Had to adjust the '#ifndef NO_BPF_SKEL' to '#ifdef BUILD_BPF_SKEL' as reverted that build BPF skels by default. Also cope with the addition of -I$(srctree)/tools/include/uapi done by Yang Jihong so that we prefer using the kernel sources headers instead of older ones in the system. Signed-off-by:
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Yang Jihong authored
Currently, vmlinux.h uses the bpf.h and perf_event.h header files in the system path. If the header files in compilation environment are old, compilation may fail. For example: /home/yangjihong/linux/tools/perf/util/bpf_skel/.tmp/../vmlinux.h:151:27: error: field has incomplete type 'union perf_sample_weight' union perf_sample_weight weight; Use the bpf.h and perf_event.h files in the source code directory to avoid compilation compatibility problems. Signed-off-by:Yang Jihong <yangjihong1@huawei.com> Tested-by:
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Adrian Hunter authored
Do not assume which events may have a PMU name, allowing the logic to keep an AUX event group together. Example: Before: $ perf record --no-bpf-event -c 10 -e '{intel_pt//,tlb_flush.stlb_any/aux-sample-size=8192/pp}:u' -- sleep 0.1 WARNING: events were regrouped to match PMUs Cannot add AUX area sampling to a group leader $ After: $ perf record --no-bpf-event -c 10 -e '{intel_pt//,tlb_flush.stlb_any/aux-sample-size=8192/pp}:u' -- sleep 0.1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.078 MB perf.data ] $ perf script -F-dso,+addr | grep -C5 tlb_flush.stlb_any | head -11 sleep 20444 [003] 7939.510243: 1 branches:uH: 7f5350cc82a2 dl_main+0x9a2 => 7f5350cb38f0 _dl_add_to_namespace_list+0x0 sleep 20444 [003] 7939.510243: 1 branches:uH: 7f5350cb3908 _dl_add_to_namespace_list+0x18 => 7f5350cbb080 rtld_mutex_dummy+0x0 sleep 20444 [003] 7939.510243: 1 branches:uH: 7f5350cc8350 dl_main+0xa50 => 0 [unknown] sleep 20444 [003] 7939.510244: 1 branches:uH: 7f5350cc83ca dl_main+0xaca => 7f5350caeb60 _dl_process_pt_gnu_property+0x0 sleep 20444 [003] 7939.510245: 1 branches:uH: 7f5350caeb60 _dl_process_pt_gnu_property+0x0 => 0 [unknown] sleep 20444 7939.510245: 10 tlb_flush.stlb_any/aux-sample-size=8192/pp: 0 7f5350caeb60 _dl_process_pt_gnu_property+0x0 sleep 20444 [003] 7939.510254: 1 branches:uH: 7f5350cc87fe dl_main+0xefe => 7f5350ccd240 strcmp+0x0 sleep 20444 [003] 7939.510254: 1 branches:uH: 7f5350cc8862 dl_main+0xf62 => 0 [unknown] sleep 20444 [003] 7939.510255: 1 branches:uH: 7f5350cc9cdc dl_main+0x23dc => 0 [unknown] sleep 20444 [003] 7939.510257: 1 branches:uH: 7f5350cc89f6 dl_main+0x10f6 => 7f5350cb9530 _dl_setup_hash+0x0 sleep 20444 [003] 7939.510257: 1 branches:uH: 7f5350cc8a2d dl_main+0x112d => 7f5350cb3990 _dl_new_object+0x0 $ Fixes: 347c2f0a ("perf parse-events: Sort and group parsed events") Suggested-by: -
Adrian Hunter authored
br_misp_retired.all_branches is supported on processors that support Intel PT, so use it to test sample mode with an event that has been given a PMU name. Please note, the test fails prior to the fix "perf parse-events: Do not break up AUX event group". Signed-off-by:
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Ian Rogers authored
If we have a group of {cycles,faults} then we need the faults software event to appear to be on the same PMU as cycles so that we don't split the group in parse_events__sort_events_and_fix_groups. This case is relatively easy as cycles is the leader and will have a PMU name. In the reverse case, {faults,cycles} we still need faults to appear to have the PMU name of cycles but the old behavior is just to return "cpu". For hybrid this fails as cycles will be on "cpu_core" or "cpu_atom", causing faults to be split into a different group. Change the behavior for software events so that the whole group is searched for the named PMU. Signed-off-by: -
Yanteng Si authored
Picking the changes from: c68e3d47 ("x86/include/asm/msr-index.h: Add IFS Array test bits") Silencing these perf build warnings: Warning: Kernel ABI header at 'tools/arch/x86/include/asm/msr-index.h' differs from latest version at 'arch/x86/include/asm/msr-index.h' diff -u tools/arch/x86/include/asm/msr-index.h arch/x86/include/asm/msr-index.h Signed-off-by:
Yanteng Si <siyanteng@loongson.cn> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: loongson-kernel@lists.loongnix.cn Link: https://lore.kernel.org/r/05778ab3c168c8030f6b20e60375dc803f0cd300.1683712945.git.siyanteng@loongson.cnSigned-off-by:
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Yanteng Si authored
Picking the changes from: e65733b5 ("KVM: x86: Redefine 'longmode' as a flag for KVM_EXIT_HYPERCALL") 30ec7997 ("KVM: arm64: timers: Allow userspace to set the global counter offset") 821d935c ("KVM: arm64: Introduce support for userspace SMCCC filtering") 81dc9504 ("KVM: arm64: nv: timers: Support hyp timer emulation") a8308b3f ("KVM: arm64: Refactor hvc filtering to support different actions") 0e5c9a9d ("KVM: arm64: Expose SMC/HVC width to userspace") Silencing these perf build warnings: Warning: Kernel ABI header at 'tools/include/uapi/linux/kvm.h' differs from latest version at 'include/uapi/linux/kvm.h' diff -u tools/include/uapi/linux/kvm.h include/uapi/linux/kvm.h Warning: Kernel ABI header at 'tools/arch/x86/include/uapi/asm/kvm.h' differs from latest version at 'arch/x86/include/uapi/asm/kvm.h' diff -u tools/arch/x86/include/uapi/asm/kvm.h arch/x86/include/uapi/asm/kvm.h Warning: Kernel ABI header at 'tools/arch/arm64/include/uapi/asm/kvm.h' differs from latest version at 'arch/arm64/include/uapi/asm/kvm.h' diff -u tools/arch/arm64/include/uapi/asm/kvm.h arch/arm64/include/uapi/asm/kvm.h Signed-off-by:
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Yanteng Si authored
Picking the changes from: 102882b5 ("ALSA: document that struct __snd_pcm_mmap_control64 is messed up") 9f656705 ("ALSA: pcm: rewrite snd_pcm_playback_silence()") Silencing these perf build warnings: Warning: Kernel ABI header at 'tools/include/uapi/sound/asound.h' differs from latest version at 'include/uapi/sound/asound.h' diff -u tools/include/uapi/sound/asound.h include/uapi/sound/asound.h Signed-off-by:
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Yanteng Si authored
Picking the changes from: 31088f6f ("uapi/linux/const.h: prefer ISO-friendly __typeof__") Silencing these perf build warnings:: Warning: Kernel ABI header at 'tools/include/uapi/linux/const.h' differs from latest version at 'include/uapi/linux/const.h' diff -u tools/include/uapi/linux/const.h include/uapi/linux/const.h Signed-off-by:
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Yanteng Si authored
Picking the changes from: 1cc064dc ("drm/i915/perf: Add support for OA media units") c61d04c9 ("drm/i915/perf: Add engine class instance parameters to perf") 02abecde ("drm/i915/uapi: Replace fake flex-array with flexible-array member") Silencing these perf build warnings: Warning: Kernel ABI header at 'tools/include/uapi/drm/i915_drm.h' differs from latest version at 'include/uapi/drm/i915_drm.h' diff -u tools/include/uapi/drm/i915_drm.h include/uapi/drm/i915_drm.h Signed-off-by:
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Yanteng Si authored
Picking the changes from: 60687716 ("drm: document DRM_IOCTL_PRIME_HANDLE_TO_FD and PRIME_FD_TO_HANDLE") 61a55f8b ("drm: document expectations for GETFB2 handles") 158350aa ("drm: document DRM_IOCTL_GEM_CLOSE") Silencing these perf build warnings: Warning: Kernel ABI header at 'tools/include/uapi/drm/drm.h' differs from latest version at 'include/uapi/drm/drm.h' diff -u tools/include/uapi/drm/drm.h include/uapi/drm/drm.h No changes in tooling as these are just C comment documentation changes. Signed-off-by:
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Yanteng Si authored
Picking the changes from: 91d0b78c ("inet: Add IP_LOCAL_PORT_RANGE socket option") Silencing these perf build warnings: Warning: Kernel ABI header at 'tools/include/uapi/linux/in.h' differs from latest version at 'include/uapi/linux/in.h' diff -u tools/include/uapi/linux/in.h include/uapi/linux/in.h Signed-off-by:
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Arnaldo Carvalho de Melo authored
Build BPF skels require having a compiler able to generate BPF bytecode, and so far this is only possible with clang, so check for its availability and fail the build when the user explicitely ask for BPF skels to be built. Acked-by:
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Thomas Richter authored
Test case 'Test java symbol' might run for a long time. On Fedora 38 the run time is very, very long: Output before: # time ./perf test 108 108: Test java symbol : Ok real 22m15.775s user 3m42.584s sys 4m30.685s # The reason is a lookup for the server for debug symbols as shown in: # cat /etc/debuginfod/elfutils.urls https://debuginfod.fedoraproject.org/ # This lookup is done for every symbol/sample, so about 3500 lookups will take place. To omit this lookup, which is not needed, unset environment variable DEBUGINFOD_URLS=''. Output after: # time ./perf test 108 108: Test java symbol : Ok real 0m6.242s user 0m4.982s sys 0m3.243s # Signed-off-by:
Thomas Richter <tmricht@linux.ibm.com> Tested-by:
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Ian Rogers authored
The pmu_group_name by default returns "cpu" which on non-hybrid/ARM means that ungrouped software, and hardware events are all going to sort by the original insertion index. However, on hybrid and ARM wildcard expansion may mean the PMU name is set and events will be unnecessarily reordered - triggering the reordering warning. Signed-off-by:
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Ian Rogers authored
Some metric groups have metrics that don't have fully overlapping events, meaning that the group's events become unique event groups that may need to multiplex with each other. This can be particularly unfortunate when the groups wouldn't need to multiplex because there are sufficient hardware counters. Add a flag so that if recording a metric group then the metrics within the group needn't use groups for their events. The flag is added to Intel TopdownL1 and TopdownL2 metrics. Signed-off-by:
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Ian Rogers authored
'perf stat' with no arguments will use default events and metrics. These events may fail to open even with kernel and hypervisor disabled. When these fail then the permissions error appears even though they were implicitly selected. This is particularly a problem with the automatic selection of the TopdownL1 metric group on certain architectures like Skylake: $ perf stat true Error: Access to performance monitoring and observability operations is limited. Consider adjusting /proc/sys/kernel/perf_event_paranoid setting to open access to performance monitoring and observability operations for processes without CAP_PERFMON, CAP_SYS_PTRACE or CAP_SYS_ADMIN Linux capability. More information can be found at 'Perf events and tool security' document: https://www.kernel.org/doc/html/latest/admin-guide/perf-security.html perf_event_paranoid setting is 2: -1: Allow use of (almost) all events by all users Ignore mlock limit after perf_event_mlock_kb without CAP_IPC_LOCK >= 0: Disallow raw and ftrace function tracepoint access >= 1: Disallow CPU event access >= 2: Disallow kernel profiling To make the adjusted perf_event_paranoid setting permanent preserve it in /etc/sysctl.conf (e.g. kernel.perf_event_paranoid = <setting>) $ This patch adds skippable evsels that when they fail to open won't cause termination and will appear as "<not supported>" in output. The TopdownL1 events, from the metric group, are marked as skippable. This turns the failure above to: $ perf stat perf bench internals synthesize Computing performance of single threaded perf event synthesis by synthesizing events on the perf process itself: Average synthesis took: 49.287 usec (+- 0.083 usec) Average num. events: 3.000 (+- 0.000) Average time per event 16.429 usec Average data synthesis took: 49.641 usec (+- 0.085 usec) Average num. events: 11.000 (+- 0.000) Average time per event 4.513 usec Performance counter stats for 'perf bench internals synthesize': 1,222.38 msec task-clock:u # 0.993 CPUs utilized 0 context-switches:u # 0.000 /sec 0 cpu-migrations:u # 0.000 /sec 162 page-faults:u # 132.529 /sec 774,445,184 cycles:u # 0.634 GHz (49.61%) 1,640,969,811 instructions:u # 2.12 insn per cycle (59.67%) 302,052,148 branches:u # 247.102 M/sec (59.69%) 1,807,718 branch-misses:u # 0.60% of all branches (59.68%) 5,218,927 CPU_CLK_UNHALTED.REF_XCLK:u # 4.269 M/sec # 17.3 % tma_frontend_bound # 56.4 % tma_retiring # nan % tma_backend_bound # nan % tma_bad_speculation (60.01%) 536,580,469 IDQ_UOPS_NOT_DELIVERED.CORE:u # 438.965 M/sec (60.33%) <not supported> INT_MISC.RECOVERY_CYCLES_ANY:u 5,223,936 CPU_CLK_UNHALTED.ONE_THREAD_ACTIVE:u # 4.274 M/sec (40.31%) 774,127,250 CPU_CLK_UNHALTED.THREAD:u # 633.297 M/sec (50.34%) 1,746,579,518 UOPS_RETIRED.RETIRE_SLOTS:u # 1.429 G/sec (50.12%) 1,940,625,702 UOPS_ISSUED.ANY:u # 1.588 G/sec (49.70%) 1.231055525 seconds time elapsed 0.258327000 seconds user 0.965749000 seconds sys $ The event INT_MISC.RECOVERY_CYCLES_ANY:u is skipped as it can't be opened with paranoia 2 on Skylake. With a lower paranoia, or as root, all events/metrics are computed. Signed-off-by:
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Ian Rogers authored
Division by zero causes expression parsing to fail and no metric to be generated. This can mean for short running benchmarks metrics are not shown. Change the behavior to make the value nan, which gets shown like: ''' $ perf stat -M TopdownL2 true Performance counter stats for 'true': 1,031,492 INST_RETIRED.ANY # nan % tma_fetch_bandwidth # nan % tma_heavy_operations # nan % tma_light_operations 29,304 CPU_CLK_UNHALTED.REF_XCLK # nan % tma_fetch_latency # nan % tma_branch_mispredicts # nan % tma_machine_clears # nan % tma_core_bound # nan % tma_memory_bound 2,658,319 IDQ_UOPS_NOT_DELIVERED.CORE 11,167 EXE_ACTIVITY.BOUND_ON_STORES 262,058 EXE_ACTIVITY.1_PORTS_UTIL <not counted> BR_MISP_RETIRED.ALL_BRANCHES (0.00%) <not counted> INT_MISC.RECOVERY_CYCLES_ANY (0.00%) <not counted> CPU_CLK_UNHALTED.ONE_THREAD_ACTIVE (0.00%) <not counted> CPU_CLK_UNHALTED.THREAD (0.00%) <not counted> UOPS_RETIRED.RETIRE_SLOTS (0.00%) <not counted> CYCLE_ACTIVITY.STALLS_MEM_ANY (0.00%) <not counted> UOPS_RETIRED.MACRO_FUSED (0.00%) <not counted> IDQ_UOPS_NOT_DELIVERED.CYCLES_0_UOPS_DELIV.CORE (0.00%) <not counted> EXE_ACTIVITY.2_PORTS_UTIL (0.00%) <not counted> CYCLE_ACTIVITY.STALLS_TOTAL (0.00%) <not counted> MACHINE_CLEARS.COUNT (0.00%) <not counted> UOPS_ISSUED.ANY (0.00%) 0.002864879 seconds time elapsed 0.003012000 seconds user 0.000000000 seconds sys ''' When events aren't supported a count of 0 can be confusing and make metrics look meaningful. Change these to be nan also which, with the next change, gets shown like: ''' $ perf stat true Performance counter stats for 'true': 1.25 msec task-clock:u # 0.387 CPUs utilized 0 context-switches:u # 0.000 /sec 0 cpu-migrations:u # 0.000 /sec 46 page-faults:u # 36.702 K/sec 255,942 cycles:u # 0.204 GHz (88.66%) 123,046 instructions:u # 0.48 insn per cycle 28,301 branches:u # 22.580 M/sec 2,489 branch-misses:u # 8.79% of all branches 4,719 CPU_CLK_UNHALTED.REF_XCLK:u # 3.765 M/sec # nan % tma_frontend_bound # nan % tma_retiring # nan % tma_backend_bound # nan % tma_bad_speculation 344,855 IDQ_UOPS_NOT_DELIVERED.CORE:u # 275.147 M/sec <not supported> INT_MISC.RECOVERY_CYCLES_ANY:u <not counted> CPU_CLK_UNHALTED.ONE_THREAD_ACTIVE:u (0.00%) <not counted> CPU_CLK_UNHALTED.THREAD:u (0.00%) <not counted> UOPS_RETIRED.RETIRE_SLOTS:u (0.00%) <not counted> UOPS_ISSUED.ANY:u (0.00%) 0.003238142 seconds time elapsed 0.000000000 seconds user 0.003434000 seconds sys ''' Ensure that nan metric values are quoted as nan isn't a valid number in JSON. Signed-off-by: -
Linus Torvalds authored
Merge tag 'platform-drivers-x86-v6.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 Pull x86 platform driver fixes from Hans de Goede: "Nothing special to report just various small fixes: - thinkpad_acpi: Fix profile (performance/bal/low-power) regression on T490 - misc other small fixes / hw-id additions" * tag 'platform-drivers-x86-v6.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: platform/mellanox: fix potential race in mlxbf-tmfifo driver platform/x86: touchscreen_dmi: Add info for the Dexp Ursus KX210i platform/x86: touchscreen_dmi: Add upside-down quirk for GDIX1002 ts on the Juno Tablet platform/x86: thinkpad_acpi: Add profile force ability platform/x86: thinkpad_acpi: Fix platform profiles on T490 platform/x86: hp-wmi: add micmute to hp_wmi_keymap struct platform/x86/intel-uncore-freq: Return error on write frequency platform/x86: intel_scu_pcidrv: Add back PCI ID for Medfield
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- 09 May, 2023 2 commits
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Linus Torvalds authored
Dan has been improving on the smatch error pointer checks, and pointed at another case where the __filemap_get_folio() conversion to error pointers had been overlooked. This time because it was hidden behind the filemap_grab_folio() helper function that is a wrapper around it. Reported-by:
Dan Carpenter <dan.carpenter@linaro.org> Cc: Anna Schumaker <anna@kernel.org> Cc: Matthew Wilcox <willy@infradead.org> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linuxLinus Torvalds authored
Pull btrfs fixes from David Sterba: - fix backward leaf iteration which could possibly return the same key - fix assertion when device add and balance race for exclusive operation - fix regression when freeing device, state tree would leak after device replace - fix attempt to clear space cache v1 when block-group-tree is enabled - fix potential i_size corruption when encoded write races with send v2 and enabled no-holes (the race is hard to hit though, the window is a few instructions wide) - fix wrong bitmap API use when checking empty zones, parameters were swapped but not causing a bug due to other code - prevent potential qgroup leak if subvolume create does not commit transaction (which is pending in the development queue) - error handling and reporting: - abort transaction when sibling keys check fails for leaves - print extent buffers when sibling keys check fails * tag 'for-6.4-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: btrfs: don't free qgroup space unless specified btrfs: fix encoded write i_size corruption with no-holes btrfs: zoned: fix wrong use of bitops API in btrfs_ensure_empty_zones btrfs: properly reject clear_cache and v1 cache for block-group-tree btrfs: print extent buffers when sibling keys check fails btrfs: abort transaction when sibling keys check fails for leaves btrfs: fix leak of source device allocation state after device replace btrfs: fix assertion of exclop condition when starting balance btrfs: fix btrfs_prev_leaf() to not return the same key twice
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