- 17 Oct, 2023 9 commits
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Ian Rogers authored
File APIs don't alter the struct pmu so allow const ones to be passed. Signed-off-by: Ian Rogers <irogers@google.com> Reviewed-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: James Clark <james.clark@arm.com> Cc: Suzuki K Poulose <suzuki.poulose@arm.com> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Will Deacon <will@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Jing Zhang <renyu.zj@linux.alibaba.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: John Garry <john.g.garry@oracle.com> Cc: linux-arm-kernel@lists.infradead.org Cc: coresight@lists.linaro.org Link: https://lore.kernel.org/r/20231012175645.1849503-5-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Ian Rogers authored
Avoid setting PMU values in arm_spe_pmu_default_config, move to perf_pmu__arch_init. Signed-off-by: Ian Rogers <irogers@google.com> Reviewed-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Leo Yan <leo.yan@linaro.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: James Clark <james.clark@arm.com> Cc: Suzuki K Poulose <suzuki.poulose@arm.com> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Will Deacon <will@kernel.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Jing Zhang <renyu.zj@linux.alibaba.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: John Garry <john.g.garry@oracle.com> Cc: linux-arm-kernel@lists.infradead.org Cc: coresight@lists.linaro.org Link: https://lore.kernel.org/r/20231012175645.1849503-4-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Ian Rogers authored
Avoid setting PMU values in intel_pt_pmu_default_config, move to perf_pmu__arch_init. Signed-off-by: Ian Rogers <irogers@google.com> Reviewed-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: James Clark <james.clark@arm.com> Cc: Suzuki K Poulose <suzuki.poulose@arm.com> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Will Deacon <will@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Jing Zhang <renyu.zj@linux.alibaba.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: John Garry <john.g.garry@oracle.com> Cc: linux-arm-kernel@lists.infradead.org Cc: coresight@lists.linaro.org Link: https://lore.kernel.org/r/20231012175645.1849503-3-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Ian Rogers authored
Assign default_config as part of the init. perf_pmu__get_default_config was doing more than just getting the default config and so this is intended to better align with the code. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: James Clark <james.clark@arm.com> Cc: Suzuki K Poulose <suzuki.poulose@arm.com> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Will Deacon <will@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Jing Zhang <renyu.zj@linux.alibaba.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: John Garry <john.g.garry@oracle.com> Cc: linux-arm-kernel@lists.infradead.org Cc: coresight@lists.linaro.org Link: https://lore.kernel.org/r/20231012175645.1849503-2-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Adrian Hunter authored
Use get_unaligned_le64() instead of memcpy_le64(..., 8) because it produces simpler code. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20231005190451.175568-6-adrian.hunter@intel.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Adrian Hunter authored
Avoid unaligned access by using get_unaligned_le16(), get_unaligned_le32() and get_unaligned_le64(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20231005190451.175568-5-adrian.hunter@intel.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Adrian Hunter authored
Use definitions from tools/include/linux/kernel.h Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20231005190451.175568-4-adrian.hunter@intel.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Adrian Hunter authored
Simplify and remove unnecessary constant expressions. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20231005190451.175568-3-adrian.hunter@intel.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Adrian Hunter authored
Add get_unaligned_le16(), get_unaligned_le32 and get_unaligned_le64, same as include/asm-generic/unaligned.h. And add include/asm-generic/unaligned.h to check-headers.sh bringing tools/include/asm-generic/unaligned.h up to date so that the kernel and tools versions match. Use diagnostic pragmas to ignore -Wpacked used by perf build. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20231005190451.175568-2-adrian.hunter@intel.com Link: https://lore.kernel.org/r/20231010142234.20061-1-adrian.hunter@intel.com [ squashed check-header.sh addition ] Signed-off-by: Namhyung Kim <namhyung@kernel.org>
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- 12 Oct, 2023 23 commits
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Besar Wicaksono authored
The decoder creation for raw trace uses metadata from the first CPU. On per-cpu mode, this metadata is incorrectly used for every decoder. On per-process/per-thread traces, the first CPU is CPU0. If CPU0 trace is not enabled, its metadata will be marked unused and the decoder is not created. Perf report dump skips the decoding part because the decoder is missing. To fix this, use metadata of the CPU associated with sample object. Signed-off-by: Besar Wicaksono <bwicaksono@nvidia.com> Reviewed-by: James Clark <james.clark@arm.com> Cc: suzuki.poulose@arm.com Cc: mike.leach@linaro.org Cc: jonathanh@nvidia.com Cc: rwiley@nvidia.com Cc: treding@nvidia.com Cc: vsethi@nvidia.com Cc: ywan@nvidia.com Cc: linux-arm-kernel@lists.infradead.org Cc: coresight@lists.linaro.org Cc: linux-tegra@vger.kernel.org Link: https://lore.kernel.org/r/20231010234803.5419-1-bwicaksono@nvidia.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Ian Rogers authored
Memory leaks were detected by clang-tidy. Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: llvm@lists.linux.dev Cc: Ming Wang <wangming01@loongson.cn> Cc: Tom Rix <trix@redhat.com> Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20231009183920.200859-20-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Ian Rogers authored
Memory leaks were detected by clang-tidy. Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: llvm@lists.linux.dev Cc: Ming Wang <wangming01@loongson.cn> Cc: Tom Rix <trix@redhat.com> Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20231009183920.200859-19-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Ian Rogers authored
If opendir failed then closedir was passed NULL which is erroneous. Caught by clang-tidy. Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: llvm@lists.linux.dev Cc: Ming Wang <wangming01@loongson.cn> Cc: Tom Rix <trix@redhat.com> Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20231009183920.200859-18-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Ian Rogers authored
io__getline will free the line on error but it doesn't clear the out argument. This may lead to the line being freed twice, like in tools/perf/util/srcline.c as detected by clang-tidy. Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: llvm@lists.linux.dev Cc: Ming Wang <wangming01@loongson.cn> Cc: Tom Rix <trix@redhat.com> Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20231009183920.200859-17-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Ian Rogers authored
Add missing free on an error path as detected by clang-tidy. Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: llvm@lists.linux.dev Cc: Ming Wang <wangming01@loongson.cn> Cc: Tom Rix <trix@redhat.com> Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20231009183920.200859-16-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Ian Rogers authored
If a memory allocation fails then the strdup-ed string needs freeing. Detected by clang-tidy. Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: llvm@lists.linux.dev Cc: Ming Wang <wangming01@loongson.cn> Cc: Tom Rix <trix@redhat.com> Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20231009183920.200859-15-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Ian Rogers authored
On success path the sib_core and sib_thr values weren't being freed. Detected by clang-tidy. Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: llvm@lists.linux.dev Cc: Ming Wang <wangming01@loongson.cn> Cc: Tom Rix <trix@redhat.com> Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20231009183920.200859-14-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Ian Rogers authored
On other code paths browser->he_selection is NULL checked, add a missing case reported by clang-tidy. Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: llvm@lists.linux.dev Cc: Ming Wang <wangming01@loongson.cn> Cc: Tom Rix <trix@redhat.com> Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20231009183920.200859-13-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Ian Rogers authored
Address clang-tidy warning: ``` tools/perf/ui/browsers/hists.c:2416:8: warning: Excessive padding in 'struct popup_action' (8 padding bytes, where 0 is optimal). Optimal fields order: time, thread, evsel, fn, ms, socket, rstype, ``` Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: llvm@lists.linux.dev Cc: Ming Wang <wangming01@loongson.cn> Cc: Tom Rix <trix@redhat.com> Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20231009183920.200859-12-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Ian Rogers authored
In the unlikely case of having a symbol without a mapping, avoid a NULL dereference that clang-tidy warns about. Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: llvm@lists.linux.dev Cc: Ming Wang <wangming01@loongson.cn> Cc: Tom Rix <trix@redhat.com> Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20231009183920.200859-11-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Ian Rogers authored
pmu should be initialized to NULL before perf_pmus__scan loop. Fix and shrink the scope of pmu at the same time. Issue detected by clang-tidy. Fixes: 5752c20f ("perf mem: Scan all PMUs instead of just core ones") Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: llvm@lists.linux.dev Cc: Ming Wang <wangming01@loongson.cn> Cc: Tom Rix <trix@redhat.com> Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20231009183920.200859-10-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Ian Rogers authored
jit_repipe_unwinding_info is called in a loop by jit_process_dump, avoid leaking unwinding_data by free-ing before overwriting. Error detected by clang-tidy. Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: llvm@lists.linux.dev Cc: Ming Wang <wangming01@loongson.cn> Cc: Tom Rix <trix@redhat.com> Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20231009183920.200859-9-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Ian Rogers authored
clang-tidy was warning: ``` util/env.c:334:23: warning: Access to field 'nr_pmu_mappings' results in a dereference of a null pointer (loaded from variable 'env') [clang-analyzer-core.NullDereference] env->nr_pmu_mappings = pmu_num; ``` As functions are called potentially when !env was true. This condition could never be true as it would produce a segv, so remove the unnecessary NULL tests and silence clang-tidy. Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: llvm@lists.linux.dev Cc: Ming Wang <wangming01@loongson.cn> Cc: Tom Rix <trix@redhat.com> Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20231009183920.200859-8-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Ian Rogers authored
The buildid filename is first determined and then from this the buildid read. If getting the filename fails then the buildid will be used for a later memcmp uninitialized. Detected by clang-tidy. Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: llvm@lists.linux.dev Cc: Ming Wang <wangming01@loongson.cn> Cc: Tom Rix <trix@redhat.com> Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20231009183920.200859-7-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Ian Rogers authored
Found by clang-tidy: ``` bench/uprobe.c:98:3: warning: Use of memory after it is freed [clang-analyzer-unix.Malloc] bench_uprobe_bpf__destroy(skel); ``` Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: llvm@lists.linux.dev Cc: Ming Wang <wangming01@loongson.cn> Cc: Tom Rix <trix@redhat.com> Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20231009183920.200859-6-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Ian Rogers authored
Add a -checks argument to allow the checks passed to the clang-tool to be set on the command line. Add a pass through -header-filter option. Don't run analysis on non-C or CPP files. Signed-off-by: Ian Rogers <irogers@google.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: llvm@lists.linux.dev Cc: Ming Wang <wangming01@loongson.cn> Cc: Ingo Molnar <mingo@redhat.com> Cc: Tom Rix <trix@redhat.com> Cc: bpf@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-perf-users@vger.kernel.org Link: https://lore.kernel.org/r/20231009183920.200859-4-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Ian Rogers authored
Make the output more stable and deterministic. Signed-off-by: Ian Rogers <irogers@google.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: llvm@lists.linux.dev Cc: Ming Wang <wangming01@loongson.cn> Cc: Ingo Molnar <mingo@redhat.com> Cc: Tom Rix <trix@redhat.com> Cc: bpf@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-perf-users@vger.kernel.org Link: https://lore.kernel.org/r/20231009183920.200859-3-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Ian Rogers authored
Builds in tools still use the cmd_ prefix in .cmd files, so don't require the saved part. Name the groups in the line pattern match so that changing the regular expression is more robust and works with the addition of a new match group. Signed-off-by: Ian Rogers <irogers@google.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: llvm@lists.linux.dev Cc: Ming Wang <wangming01@loongson.cn> Cc: Ingo Molnar <mingo@redhat.com> Cc: Tom Rix <trix@redhat.com> Cc: bpf@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-perf-users@vger.kernel.org Link: https://lore.kernel.org/r/20231009183920.200859-2-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Ian Rogers authored
Raw events can be strings like 'r0xead' but the 0x is optional so they can also be 'read'. On IcelakeX uncore_imc_free_running has an event called 'read' which may be programmed as: ``` $ perf stat -e 'uncore_imc_free_running/event=read/' -a sleep 1 ``` However, the PE_RAW type isn't allowed on the right of a term, even though in this case we just want to interpret it as a string. This leads to the following error on IcelakeX: ``` $ perf stat -e 'uncore_imc_free_running/event=read/' -a sleep 1 event syntax error: '..nning/event=read/' \___ parser error Run 'perf list' for a list of valid events Usage: perf stat [<options>] [<command>] -e, --event <event> event selector. use 'perf list' to list available events ``` Fix this by allowing raw types on the right of terms and treat them as strings, just as is already done for PE_LEGACY_CACHE. Make this consistent by just entirely removing name_or_legacy and always using name_or_raw that covers all three cases. Fixes: 6fd1e519 ("perf parse-events: Support PMUs for legacy cache events") Signed-off-by: Ian Rogers <irogers@google.com> Cc: James Clark <james.clark@arm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Link: https://lore.kernel.org/r/20230928004431.1926969-1-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Arnaldo Carvalho de Melo authored
By default perf will fail the build if the development files for libtraceevent are not available. To build perf without libtraceevent support, disabling several features such as 'perf trace', one needs to add NO_LIBTRACEVENT=1 to the make command line. Add the missing comments about that to the tools/perf/Makefile.perf file, just like all the other such command line toggles. Fixes: 378ef0f5 ("perf build: Use libtraceevent from the system") Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Reviewed-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/ZR6+MhXtLnv6ow6E@kernel.orgSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Arnaldo Carvalho de Melo authored
This is a longstanding to do list entry: we need a way to see that a sample took place while in idle state, as the current way to do it is to infer that by the name of the functions that in such state have more samples, IOW: a hack. Maybe we can do flip a bit in samples that take place inside the enter/exit idle section in do_idle()? But till then, add one more :-\ Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Frederic Weisbecker <frederic@kernel.org> Link: https://lore.kernel.org/r/ZR66Qgbcltt+zG7F@kernel.orgSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Ian Rogers authored
We specify that a "num_hex" comprises 1 or more digits, however, that allows strtoull to fail with ERANGE. Limit the number of hex digits to being between 1 and 16. Before: ``` $ perf stat -e 'cpu/rE7574c47490475745/' true perf: util/parse-events.c:215: fix_raw: Assertion `errno == 0' failed. Aborted (core dumped) ``` After: ``` $ perf stat -e 'cpu/rE7574c47490475745/' true event syntax error: 'cpu/rE7574c47490475745/' \___ Bad event or PMU Unable to find PMU or event on a PMU of 'cpu' Initial error: event syntax error: 'cpu/rE7574c47490475745/' \___ unknown term 'rE7574c47490475745' for pmu 'cpu' valid terms: event,pc,edge,offcore_rsp,ldlat,inv,umask,frontend,cmask,config,config1,config2,config3,name,period,percore,metric-id Run 'perf list' for a list of valid events Usage: perf stat [<options>] [<command>] -e, --event <event> event selector. use 'perf list' to list available events ``` Issue found through fuzz testing. Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20230907210533.3712979-1-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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- 10 Oct, 2023 1 commit
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Arnaldo Carvalho de Melo authored
To pick up the 'perf bench sched-seccomp-notify' changes to allow us to continue build testing perf-tools-next with the set of distro containers, where some older ones don't have a recent enough seccomp.h UAPI header that contains defines needed by this new 'perf bench' workload. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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- 05 Oct, 2023 6 commits
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Kajol Jain authored
The perf test named "kernel lock contention analysis test" fails in powerpc system with below error: [command]# ./perf test 81 -vv 81: kernel lock contention analysis test : --- start --- test child forked, pid 2140 Testing perf lock record and perf lock contention Testing perf lock contention --use-bpf [Skip] No BPF support Testing perf lock record and perf lock contention at the same time Testing perf lock contention --threads Testing perf lock contention --lock-addr Testing perf lock contention --type-filter (w/ spinlock) Testing perf lock contention --lock-filter (w/ tasklist_lock) Testing perf lock contention --callstack-filter (w/ unix_stream) [Fail] Recorded result should have a lock from unix_stream: test child finished with -1 ---- end ---- kernel lock contention analysis test: FAILED! The test is failing because we get an address entry with 0 in perf lock samples for powerpc, and code for lock contention option "--callstack-filter" will not check further entries after address 0. Below are some of the samples from test generated perf.data file, which have 0 address in the 2nd entry of callstack: -------- sched-messaging 3409 [001] 7152.904029: lock:contention_begin: 0xc00000c80904ef00 (flags=SPIN) c0000000001e926c __traceiter_contention_begin+0x6c ([kernel.kallsyms]) 0 [unknown] ([unknown]) c000000000f8a178 native_queued_spin_lock_slowpath+0x1f8 ([kernel.kallsyms]) c000000000f89f44 _raw_spin_lock_irqsave+0x84 ([kernel.kallsyms]) c0000000001d9fd0 prepare_to_wait+0x50 ([kernel.kallsyms]) c000000000c80f50 sock_alloc_send_pskb+0x1b0 ([kernel.kallsyms]) c000000000e82298 unix_stream_sendmsg+0x2b8 ([kernel.kallsyms]) c000000000c78980 sock_sendmsg+0x80 ([kernel.kallsyms]) sched-messaging 3408 [005] 7152.904036: lock:contention_begin: 0xc00000c80904ef00 (flags=SPIN) c0000000001e926c __traceiter_contention_begin+0x6c ([kernel.kallsyms]) 0 [unknown] ([unknown]) c000000000f8a178 native_queued_spin_lock_slowpath+0x1f8 ([kernel.kallsyms]) c000000000f89f44 _raw_spin_lock_irqsave+0x84 ([kernel.kallsyms]) c0000000001d9fd0 prepare_to_wait+0x50 ([kernel.kallsyms]) c000000000c80f50 sock_alloc_send_pskb+0x1b0 ([kernel.kallsyms]) c000000000e82298 unix_stream_sendmsg+0x2b8 ([kernel.kallsyms]) c000000000c78980 sock_sendmsg+0x80 ([kernel.kallsyms]) -------- Based on commit 20002ded ("perf_counter: powerpc: Add callchain support"), incase of powerpc, the callchain saved by kernel always includes first three entries as the NIP (next instruction pointer), LR (link register), and the contents of LR save area in the second stack frame. In certain scenarios its possible to have invalid kernel instruction addresses in either of LR or the second stack frame's LR. In that case, kernel will store the address as zer0. Hence, its possible to have 2nd or 3rd callstack entry as 0. As per the current code in match_callstack_filter function, we skip the callstack check incase we get 0 address. And hence the test case is failing in powerpc. Fix this issue by updating the check in match_callstack_filter function, to not skip callstack check if the 2nd or 3rd entry have 0 address for powerpc. Result in powerpc after patch changes: [command]# ./perf test 81 -vv 81: kernel lock contention analysis test : --- start --- test child forked, pid 4570 Testing perf lock record and perf lock contention Testing perf lock contention --use-bpf [Skip] No BPF support Testing perf lock record and perf lock contention at the same time Testing perf lock contention --threads Testing perf lock contention --lock-addr Testing perf lock contention --type-filter (w/ spinlock) Testing perf lock contention --lock-filter (w/ tasklist_lock) [Skip] Could not find 'tasklist_lock' Testing perf lock contention --callstack-filter (w/ unix_stream) Testing perf lock contention --callstack-filter with task aggregation Testing perf lock contention CSV output [Skip] No BPF support test child finished with 0 ---- end ---- kernel lock contention analysis test: Ok Fixes: ebab2916 ("perf lock contention: Support filters for different aggregation") Reported-by: Disha Goel <disgoel@linux.vnet.ibm.com> Tested-by: Disha Goel <disgoel@linux.ibm.com> Signed-off-by: Kajol Jain <kjain@linux.ibm.com> Cc: maddy@linux.ibm.com Cc: atrajeev@linux.vnet.ibm.com Link: https://lore.kernel.org/r/20231003092113.252380-1-kjain@linux.ibm.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Athira Rajeev authored
The testcase "Object code reading" fails in somecases for "fs_something" sub test as below: Reading object code for memory address: 0xc008000007f0142c File is: /lib/modules/6.5.0-rc3+/kernel/fs/xfs/xfs.ko On file address is: 0x1114cc Objdump command is: objdump -z -d --start-address=0x11142c --stop-address=0x1114ac /lib/modules/6.5.0-rc3+/kernel/fs/xfs/xfs.ko objdump read too few bytes: 128 test child finished with -1 This can alo be reproduced when running perf record with workload that exercises fs_something() code. In the test setup, this is exercising xfs code since root is xfs. # perf record ./a.out # perf report -v |grep "xfs.ko" 0.76% a.out /lib/modules/6.5.0-rc3+/kernel/fs/xfs/xfs.ko 0xc008000007de5efc B [k] xlog_cil_commit 0.74% a.out /lib/modules/6.5.0-rc3+/kernel/fs/xfs/xfs.ko 0xc008000007d5ae18 B [k] xfs_btree_key_offset 0.74% a.out /lib/modules/6.5.0-rc3+/kernel/fs/xfs/xfs.ko 0xc008000007e11fd4 B [k] 0x0000000000112074 Here addr "0xc008000007e11fd4" is not resolved. since this is a kernel module, its offset is from the DSO. Xfs module is loaded at 0xc008000007d00000 # cat /proc/modules | grep xfs xfs 2228224 3 - Live 0xc008000007d00000 And size is 0x220000. So its loaded between 0xc008000007d00000 and 0xc008000007f20000. From objdump, text section is: text 0010f7bc 0000000000000000 0000000000000000 000000a0 2**4 Hence perf captured ip maps to 0x112074 which is: ( ip - start of module ) + a0 This offset 0x112074 falls out .text section which is up to 0x10f7bc In this case for module, the address 0xc008000007e11fd4 is pointing to stub instructions. This address range represents the module stubs which is allocated on module load and hence is not part of DSO offset. To address this issue in "object code reading", skip the sample if address falls out of text section and is within the module end. Use the "text_end" member of "struct dso" to do this check. To address this issue in "perf report", exploring an option of having stubs range as part of the /proc/kallsyms, so that perf report can resolve addresses in stubs range However this patch uses text_end to skip the stub range for Object code reading testcase. Reported-by: Disha Goel <disgoel@linux.ibm.com> Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Tested-by: Disha Goel<disgoel@linux.ibm.com> Reviewed-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Kajol Jain <kjain@linux.ibm.com> Cc: maddy@linux.ibm.com Cc: disgoel@linux.vnet.ibm.com Cc: linuxppc-dev@lists.ozlabs.org Link: https://lore.kernel.org/r/20230928075213.84392-3-atrajeev@linux.vnet.ibm.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Athira Rajeev authored
Update "struct dso" to include new member "is_kmod". This new field will determine if the file is a kernel module or not. To resolve the address from a sample, perf looks at the DSO maps. In case of address from a kernel module, there were some address found to be not resolved. This was observed while running perf test for "Object code reading". Though the ip falls beteen the start address of the loaded module (perf map->start ) and end address ( perf map->end), it was unresolved. This was happening because in some cases for kernel modules, address from sample points to stub instructions. To identify if the DSO is a kernel module, the new field "is_kmod" is added to "struct dso". Reported-by: Disha Goel <disgoel@linux.ibm.com> Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: kjain@linux.ibm.com Cc: maddy@linux.ibm.com Cc: disgoel@linux.vnet.ibm.com Cc: linuxppc-dev@lists.ozlabs.org Link: https://lore.kernel.org/r/20230928075213.84392-2-atrajeev@linux.vnet.ibm.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Athira Rajeev authored
Update "struct dso" to include new member "text_end". This new field will represent the offset for end of text section for a dso. For elf, this value is derived as: sh_size (Size of section in byes) + sh_offset (Section file offst) of the elf header for text. For bfd, this value is derived as: 1. For PE file, section->size + ( section->vma - dso->text_offset) 2. Other cases: section->filepos (file position) + section->size (size of section) To resolve the address from a sample, perf looks at the DSO maps. In case of address from a kernel module, there were some address found to be not resolved. This was observed while running perf test for "Object code reading". Though the ip falls beteen the start address of the loaded module (perf map->start ) and end address ( perf map->end), it was unresolved. Example: Reading object code for memory address: 0xc008000007f0142c File is: /lib/modules/6.5.0-rc3+/kernel/fs/xfs/xfs.ko On file address is: 0x1114cc Objdump command is: objdump -z -d --start-address=0x11142c --stop-address=0x1114ac /lib/modules/6.5.0-rc3+/kernel/fs/xfs/xfs.ko objdump read too few bytes: 128 test child finished with -1 Here, module is loaded at: # cat /proc/modules | grep xfs xfs 2228224 3 - Live 0xc008000007d00000 From objdump for xfs module, text section is: text 0010f7bc 0000000000000000 0000000000000000 000000a0 2**4 Here the offset for 0xc008000007f0142c ie 0x112074 falls out .text section which is up to 0x10f7bc. In this case for module, the address 0xc008000007e11fd4 is pointing to stub instructions. This address range represents the module stubs which is allocated on module load and hence is not part of DSO offset. To identify such address, which falls out of text section and within module end, added the new field "text_end" to "struct dso". Reported-by: Disha Goel <disgoel@linux.ibm.com> Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Reviewed-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Kajol Jain <kjain@linux.ibm.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: maddy@linux.ibm.com Cc: disgoel@linux.vnet.ibm.com Cc: linuxppc-dev@lists.ozlabs.org Link: https://lore.kernel.org/r/20230928075213.84392-1-atrajeev@linux.vnet.ibm.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Ian Rogers authored
Switch the test program to sleep that makes more sense for system wide events. Only enable system wide when root or not paranoid. This avoids failures under some testing conditions like ARM cloud. Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20230930060206.2353141-1-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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Kuan-Wei Chiu authored
In the previous code, there was a memory leak issue where the previously allocated memory was not freed upon a failed lseek operation. This patch addresses the problem by releasing the old memory before returning -errno in case of a lseek failure. This ensures that memory is properly managed and avoids potential memory leaks. Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: yangyicong@hisilicon.com Cc: jonathan.cameron@huawei.com Link: https://lore.kernel.org/r/20230930072719.1267784-1-visitorckw@gmail.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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- 30 Sep, 2023 1 commit
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Adrian Hunter authored
Ensure PERF_IP_FLAG_ASYNC is set always for asynchronous branches (i.e. interrupts etc). Fixes: 90e457f7 ("perf tools: Add Intel PT support") Cc: stable@vger.kernel.org Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20230928072953.19369-1-adrian.hunter@intel.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>
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