Messages in this thread | | | From | Athira Rajeev <> | Subject | [PATCH V4 0/2] powerpc/perf: Add support for perf extended regs in powerpc | Date | Wed, 27 May 2020 05:50:16 -0400 |
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Patch set to add support for perf extended register capability in powerpc. The capability flag PERF_PMU_CAP_EXTENDED_REGS, is used to indicate the PMU which support extended registers. The generic code define the mask of extended registers as 0 for non supported architectures.
patch 1/2 defines this PERF_PMU_CAP_EXTENDED_REGS mask to output the values of mmcr0,mmcr1,mmcr2 for POWER9. Defines `PERF_REG_EXTENDED_MASK` at runtime which contains mask value of the supported registers under extended regs.
Patch 2/2 adds extended regs to sample_reg_mask in the tool side to use with `-I?` option.
Anju T Sudhakar (2): powerpc/perf: Add support for outputting extended regs in perf intr_regs tools/perf: Add perf tools support for extended register capability in powerpc
--- Changes from v3 -> v4 - Addressed the comments for new line/tab issue and added "Reviewed-by" from Madhavan Srinivasn.
Changes from v2 -> v3 - Split kernel and tools side patches as suggested by Arnaldo - Addressed review comment from Madhavan Srinivasn
Changes from v1 -> v2
- PERF_REG_EXTENDED_MASK` is defined at runtime in the kernel based on platform. This will give flexibility in using extended regs for all processor versions where the supported registers may differ. - removed PERF_REG_EXTENDED_MASK from the perf tools side. Based on the processor version(from PVR value), tool side will return the appropriate extended mask - Since tool changes can handle without a "PERF_REG_EXTENDED_MASK" macro, dropped patch to set NO_AUXTRACE. - Addressed review comments from Ravi Bangoria for V1
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arch/powerpc/include/asm/perf_event_server.h | 8 ++++ arch/powerpc/include/uapi/asm/perf_regs.h | 14 ++++++- arch/powerpc/perf/core-book3s.c | 1 + arch/powerpc/perf/perf_regs.c | 34 +++++++++++++-- arch/powerpc/perf/power9-pmu.c | 6 +++ tools/arch/powerpc/include/uapi/asm/perf_regs.h | 14 ++++++- tools/perf/arch/powerpc/include/perf_regs.h | 5 ++- tools/perf/arch/powerpc/util/perf_regs.c | 55 +++++++++++++++++++++++++ 8 files changed, 131 insertions(+), 6 deletions(-)
-- 1.8.3.1
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