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| author | Athira Rajeev <atrajeev@linux.vnet.ibm.com> | 2020-10-21 11:53:25 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-11-19 08:56:55 +0300 |
| commit | 9e8d13697c38a86e0fcf1bb20d419e3d6103e085 (patch) | |
| tree | 96bc9eb15789edb7d84598b14862893203146d5a /arch/powerpc/perf | |
| parent | b84bf098fcc49ed6bf4b0a8bed52e9df0e8f1de7 (diff) | |
| download | linux-9e8d13697c38a86e0fcf1bb20d419e3d6103e085.tar.xz | |
powerpc/perf: Add new power PMU flag "PPMU_P10_DD1" for power10 DD1
Add a new power PMU flag "PPMU_P10_DD1" which can be used to
conditionally add any code path for power10 DD1 processor version.
Also modify power10 PMU driver code to set this flag only for DD1,
based on the Processor Version Register (PVR) value.
Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201021085329.384535-1-maddy@linux.ibm.com
Diffstat (limited to 'arch/powerpc/perf')
| -rw-r--r-- | arch/powerpc/perf/power10-pmu.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/perf/power10-pmu.c b/arch/powerpc/perf/power10-pmu.c index 9dbe8f9b89b4..a01e87f0b8d0 100644 --- a/arch/powerpc/perf/power10-pmu.c +++ b/arch/powerpc/perf/power10-pmu.c @@ -403,6 +403,7 @@ static struct power_pmu power10_pmu = { int init_power10_pmu(void) { + unsigned int pvr; int rc; /* Comes from cpu_specs[] */ @@ -410,6 +411,11 @@ int init_power10_pmu(void) strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power10")) return -ENODEV; + pvr = mfspr(SPRN_PVR); + /* Add the ppmu flag for power10 DD1 */ + if ((PVR_CFG(pvr) == 1)) + power10_pmu.flags |= PPMU_P10_DD1; + /* Set the PERF_REG_EXTENDED_MASK here */ PERF_REG_EXTENDED_MASK = PERF_REG_PMU_MASK_31; |