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 the 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 the extended regs support for power10 and exposes MMCR3, SIER2, SIER3 registers as part of extended regs. This patch series is based on powerpc/next and includes the kernel side changes to support extended regs. perf tools side changes will be sent as separate patchset. Changelog: Changes from v5 -> v6 - Split kernel changes to one patchset as suggested by Arnaldo Link to previous series: https://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=192624 Changes from v4 -> v5 - initialize `perf_reg_extended_max` to work on all platforms as suggested by Ravi Bangoria - Added Reviewed-and-Tested-by from Ravi Bangoria Changes from v3 -> v4 - Split the series and send extended regs as separate patch set here. Link to previous series : https://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=190462&state=* Other PMU patches are already merged in powerpc/next. - Fixed kernel build issue when using config having CONFIG_PERF_EVENTS set and without CONFIG_PPC_PERF_CTRS reported by kernel build bot. - Included Reviewed-by from Kajol Jain. - Addressed review comments from Ravi Bangoria to initialize `perf_reg_extended_max` and define it in lowercase since it is local variable. Anju T Sudhakar (1): powerpc/perf: Add support for outputting extended regs in perf intr_regs Athira Rajeev (1): powerpc/perf: Add extended regs support for power10 platform arch/powerpc/include/asm/perf_event.h | 3 ++ arch/powerpc/include/asm/perf_event_server.h | 5 ++++ arch/powerpc/include/uapi/asm/perf_regs.h | 20 ++++++++++++- arch/powerpc/perf/core-book3s.c | 1 + arch/powerpc/perf/perf_regs.c | 44 ++++++++++++++++++++++++++-- arch/powerpc/perf/power10-pmu.c | 6 ++++ arch/powerpc/perf/power9-pmu.c | 6 ++++ 7 files changed, 81 insertions(+), 4 deletions(-) -- 1.8.3.1
