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=*
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
