diff options
| author | Athira Rajeev <atrajeev@linux.vnet.ibm.com> | 2020-08-07 06:05:01 -0400 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-08-17 13:11:22 +1000 |
| commit | d735599a069f6936c1392e07075c34a19bda949a (patch) | |
| tree | dbb212110804b989cf6ceed937e05b0ea224035f /arch/powerpc/perf/perf_regs.c | |
| parent | 781fa4811d95314c1965c0c3337c9ac36ef26093 (diff) | |
| download | linux-stable-d735599a069f6936c1392e07075c34a19bda949a.tar.gz linux-stable-d735599a069f6936c1392e07075c34a19bda949a.tar.bz2 linux-stable-d735599a069f6936c1392e07075c34a19bda949a.zip | |
powerpc/perf: Add extended regs support for power10 platform
Include capability flag PERF_PMU_CAP_EXTENDED_REGS for power10 and
expose MMCR3, SIER2, SIER3 registers as part of extended regs. Also
introduce PERF_REG_PMU_MASK_31 to define extended mask value at
runtime for power10.
Suggested-by: Ryan Grimm <grimm@linux.ibm.com>
Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Tested-by: Nageswara R Sastry <nasastry@in.ibm.com>
Reviewed-by: Kajol Jain <kjain@linux.ibm.com>
Reviewed-and-tested-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1596794701-23530-3-git-send-email-atrajeev@linux.vnet.ibm.com
Diffstat (limited to 'arch/powerpc/perf/perf_regs.c')
| -rw-r--r-- | arch/powerpc/perf/perf_regs.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/powerpc/perf/perf_regs.c b/arch/powerpc/perf/perf_regs.c index 9301e6852d53..8e53f2fc3fe0 100644 --- a/arch/powerpc/perf/perf_regs.c +++ b/arch/powerpc/perf/perf_regs.c @@ -81,6 +81,14 @@ static u64 get_ext_regs_value(int idx) return mfspr(SPRN_MMCR1); case PERF_REG_POWERPC_MMCR2: return mfspr(SPRN_MMCR2); +#ifdef CONFIG_PPC64 + case PERF_REG_POWERPC_MMCR3: + return mfspr(SPRN_MMCR3); + case PERF_REG_POWERPC_SIER2: + return mfspr(SPRN_SIER2); + case PERF_REG_POWERPC_SIER3: + return mfspr(SPRN_SIER3); +#endif default: return 0; } } @@ -89,7 +97,9 @@ u64 perf_reg_value(struct pt_regs *regs, int idx) { u64 perf_reg_extended_max = PERF_REG_POWERPC_MAX; - if (cpu_has_feature(CPU_FTR_ARCH_300)) + if (cpu_has_feature(CPU_FTR_ARCH_31)) + perf_reg_extended_max = PERF_REG_MAX_ISA_31; + else if (cpu_has_feature(CPU_FTR_ARCH_300)) perf_reg_extended_max = PERF_REG_MAX_ISA_300; if (idx == PERF_REG_POWERPC_SIER && |