Messages in this thread Patch in this message | | | From | Janakarajan Natarajan <> | Subject | [PATCHv2] Support for perf on AMD family17h processors | Date | Thu, 17 Nov 2016 10:15:06 -0600 |
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This patch enables perf core PMU support for AMD family17h processors. In family17h, there is no PMC-event constraint. All events, irrespective of the type, can be measured using any of the performance counters.
Signed-off-by: Janakarajan Natarajan <Janakarajan.Natarajan@amd.com> ---
v1->v2
* Removed renaming of amd_core_pmu_init and associated comment. * Changed comment style to follow guidelines.
arch/x86/events/amd/core.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/arch/x86/events/amd/core.c b/arch/x86/events/amd/core.c index f5f4b3f..afb222b 100644 --- a/arch/x86/events/amd/core.c +++ b/arch/x86/events/amd/core.c @@ -662,7 +662,13 @@ static int __init amd_core_pmu_init(void) pr_cont("Fam15h "); x86_pmu.get_event_constraints = amd_get_event_constraints_f15h; break; - + case 0x17: + pr_cont("Fam17h "); + /* + * In family 17h, there are no event constraints in the PMC hardware. + * We fallback to using default amd_get_event_constraints. + */ + break; default: pr_err("core perfctr but no constraints; unknown hardware!\n"); return -ENODEV; -- 2.7.4
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