kernel/tools/perf/arch/arm64/util, branch linux-rolling-stable

perf auxtrace: Remove errno.h from auxtrace.h and fix transitive dependencies

2025-11-14T07:03:11Z

errno.h isn't used in auxtrace.h so remove it and fix build failures caused by transitive dependencies through auxtrace.h on errno.h. Signed-off-by: Ian Rogers Reviewed-by: James Clark Signed-off-by: Namhyung Kim

perf build: Remove NO_AUXTRACE build option

2025-11-14T07:03:11Z

The NO_AUXTRACE build option was used when the __get_cpuid feature test failed or if it was provided on the command line. The option no longer avoids a dependency on a library and so having the option is just adding complexity to the code base. Remove the option CONFIG_AUXTRACE from Build files and HAVE_AUXTRACE_SUPPORT by assuming it is always defined. Signed-off-by: Ian Rogers Reviewed-by: James Clark Signed-off-by: Namhyung Kim

perf arm_spe: Add "event_filter" entry in meta data

2025-09-19T15:14:28Z

Add a new "event_filter" entry in the meta data and dump it in raw data mode. After: # perf script -D ... 0 0 0x470 [0x1f0]: PERF_RECORD_AUXTRACE_INFO type: 4 Header version :2 Header size :4 PMU type v2 :11 CPU number :8 Magic :0x1010101010101010 CPU # :0 Num of params :4 MIDR :0x410fd0f0 PMU Type :11 Min Interval :256 Event Filter :0x3fe08fe ... Reviewed-by: James Clark Signed-off-by: Leo Yan Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Ali Saidi Cc: German Gomez Cc: Ian Rogers Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Will Deacon Signed-off-by: Arnaldo Carvalho de Melo

perf arm64: Sync ESR_ELx_EC_* macros in arm64_exception_types.h with esr.h

2025-09-12T18:37:57Z

Update perf util arm64_exception_types.h to match the exception class macros defined in tools/arch/arm64/include/asm/esr.h. This ensures consistency between perf tooling and the kernel header definitions for ESR_ELx_EC_* values. In v2, ESR_ELx_EC_OTHER and ESR_ELx_EC_GCS, which were missing in v1, were included. Reviewed-by: Leo Yan Signed-off-by: Yunseong Kim Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Ian Rogers Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Kan Liang Cc: Leo Yan Cc: Levi Yun Cc: Mark Rutland Cc: Mike Leach Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Will Deacon Link: https://lore.kernel.org/r/20250822145855.53071-2-ysk@kzalloc.com Signed-off-by: Arnaldo Carvalho de Melo

perf arm-spe: Report error if set frequency

2025-02-28T18:09:03Z

When users set the parameter '-F' to specify frequency for Arm SPE, the tool reports error: perf record -F 1000 -e arm_spe_0// -- sleep 1 Error: Invalid event (arm_spe_0//) in per-thread mode, enable system wide with '-a'. The output logs are confused and it does not give the correct reminding. Arm SPE does not support frequency setting given it adopts a statistical based approach. Alternatively, Arm SPE supports setting period. This commit adds a for frequency setting. It reports error and reminds users to set period instead. After: perf record -F 1000 -e arm_spe_0// -- sleep 1 Arm SPE: Frequency is not supported. Set period with -c option or PMU parameter (-e arm_spe_0/period=NUM/). Signed-off-by: Leo Yan Reviewed-by: James Clark Link: https://lore.kernel.org/r/20250227085544.2154136-1-leo.yan@arm.com Signed-off-by: Namhyung Kim

perf tools: Fix compilation error on arm64

2025-02-14T19:12:12Z

Since the commit dc6d2bc2d893 ("perf sample: Make user_regs and intr_regs optional"), the building for Arm64 reports error: arch/arm64/util/unwind-libdw.c: In function ‘libdw__arch_set_initial_registers’: arch/arm64/util/unwind-libdw.c:11:32: error: initialization of ‘struct regs_dump *’ from incompatible pointer type ‘struct regs_dump **’ [-Werror=incompatible-pointer-types] 11 | struct regs_dump *user_regs = &ui->sample->user_regs; | ^ cc1: all warnings being treated as errors make[6]: *** [/home/niayan01/linux/tools/build/Makefile.build:85: arch/arm64/util/unwind-libdw.o] Error 1 make[5]: *** [/home/niayan01/linux/tools/build/Makefile.build:138: util] Error 2 arch/arm64/tests/dwarf-unwind.c: In function ‘test__arch_unwind_sample’: arch/arm64/tests/dwarf-unwind.c:48:27: error: initialization of ‘struct regs_dump *’ from incompatible pointer type ‘struct regs_dump **’ [-Werror=incompatible-pointer-types] 48 | struct regs_dump *regs = &sample->user_regs; | ^ To fix the issue, use the helper perf_sample__user_regs() to retrieve the user_regs. Fixes: dc6d2bc2d893 ("perf sample: Make user_regs and intr_regs optional") Signed-off-by: Leo Yan Reviewed-by: James Clark Link: https://lore.kernel.org/r/20250214111025.14478-1-leo.yan@arm.com Signed-off-by: Namhyung Kim

perf tools arm-spe: Don't allocate buffer or tracking event in discard mode

2025-01-13T14:45:03Z

The buffer will never be written to so don't bother allocating it. The tracking event is also not required. Reviewed-by: Yeoreum Yun Signed-off-by: James Clark Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Athira Rajeev Cc: Graham Woodward Cc: Ian Rogers Cc: Ingo Molnar Cc: Jiri Olsa Cc: John Garry Cc: Kan Liang Cc: Leo Yan Cc: Mark Rutland Cc: Michael Petlan Cc: Mike Leach Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Rob Herring Cc: Thomas Richter Cc: Veronika Molnarova Cc: Will Deacon Link: https://lore.kernel.org/r/20250108142904.401139-5-james.clark@linaro.org Signed-off-by: Arnaldo Carvalho de Melo

perf tools arm-spe: Pull out functions for aux buffer and tracking setup

2025-01-13T14:43:15Z

These won't be used in the next commit in discard mode, so put them in their own functions. No functional changes intended. Reviewed-by: Yeoreum Yun Signed-off-by: James Clark Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Athira Rajeev Cc: Graham Woodward Cc: Ian Rogers Cc: Ingo Molnar Cc: Jiri Olsa Cc: John Garry Cc: Kan Liang Cc: Leo Yan Cc: Mark Rutland Cc: Michael Petlan Cc: Mike Leach Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Rob Herring Cc: Thomas Richter Cc: Veronika Molnarova Cc: Will Deacon Link: https://lore.kernel.org/r/20250108142904.401139-4-james.clark@linaro.org Signed-off-by: Arnaldo Carvalho de Melo

perf pmu: Move pmu_metrics_table__find and remove ARM override

2024-11-16T19:42:36Z

Move pmu_metrics_table__find() to the jevents.py generated pmu-events.c and remove indirection override for ARM. The movement removes perf_pmu__find_metrics_table that exists to enable the ARM override. The ARM override isn't necessary as just the CPUID, not PMU, is used in the metric table lookup. On non-ARM the CPU argument is just ignored for the CPUID, for ARM -1 is passed so that the CPUID for the first logical CPU is read. Reviewed-by: James Clark Signed-off-by: Ian Rogers Tested-by: Xu Yang Cc: Adrian Hunter Cc: Albert Ou Cc: Alexander Shishkin Cc: Alexandre Ghiti Cc: Athira Rajeev Cc: Ben Zong-You Xie Cc: Benjamin Gray Cc: Bibo Mao Cc: Clément Le Goffic Cc: Dima Kogan Cc: Dr. David Alan Gilbert Cc: Huacai Chen Cc: Ingo Molnar Cc: Jiri Olsa Cc: John Garry Cc: Kan Liang Cc: Leo Yan Cc: Mark Rutland Cc: Masami Hiramatsu Cc: Mike Leach Cc: Namhyung Kim Cc: Palmer Dabbelt Cc: Paul Walmsley Cc: Peter Zijlstra Cc: Ravi Bangoria Cc: Sandipan Das Cc: Will Deacon Cc: Yicong Yang Cc: linux-arm-kernel@lists.infradead.org Cc: linux-riscv@lists.infradead.org Link: https://lore.kernel.org/r/20241107162035.52206-9-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo

perf header: Pass a perf_cpu rather than a PMU to get_cpuid_str

2024-11-16T19:40:30Z

On ARM the cpuid is dependent on the core type of the CPU in question. The PMU was passed for the sake of the CPU map but this means in places a temporary PMU is created just to pass a CPU value. Just pass the CPU and fix up the callers. As there are no longer PMU users in header.h, shuffle forward declarations earlier to work around build failures. Reviewed-by: James Clark Signed-off-by: Ian Rogers Tested-by: Xu Yang Cc: Adrian Hunter Cc: Albert Ou Cc: Alexander Shishkin Cc: Alexandre Ghiti Cc: Athira Rajeev Cc: Ben Zong-You Xie Cc: Benjamin Gray Cc: Bibo Mao Cc: Clément Le Goffic Cc: Dima Kogan Cc: Dr. David Alan Gilbert Cc: Huacai Chen Cc: Ingo Molnar Cc: Jiri Olsa Cc: John Garry Cc: Kan Liang Cc: Leo Yan Cc: Mark Rutland Cc: Masami Hiramatsu Cc: Mike Leach Cc: Namhyung Kim Cc: Palmer Dabbelt Cc: Paul Walmsley Cc: Peter Zijlstra Cc: Ravi Bangoria Cc: Sandipan Das Cc: Will Deacon Cc: Yicong Yang Cc: linux-arm-kernel@lists.infradead.org Cc: linux-riscv@lists.infradead.org Link: https://lore.kernel.org/r/20241107162035.52206-7-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo