Commit-ID: e40ed1542dd779e5037a22c6b534e57127472365 Gitweb: http://git.kernel.org/tip/e40ed1542dd779e5037a22c6b534e57127472365 Author: Janakarajan Natarajan <janakarajan.natara...@amd.com> AuthorDate: Thu, 17 Nov 2016 10:15:06 -0600 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Fri, 18 Nov 2016 09:45:57 +0100
perf/x86: Add perf support for AMD family-17h processors This patch enables perf core PMU support for the new AMD family-17h processors. In family-17h, there is no PMC-event constraint. All events, irrespective of the type, can be measured using any of the six generic performance counters. Signed-off-by: Janakarajan Natarajan <janakarajan.natara...@amd.com> Acked-by: Borislav Petkov <b...@suse.de> Cc: Alexander Shishkin <alexander.shish...@linux.intel.com> Cc: Arnaldo Carvalho de Melo <a...@kernel.org> Cc: Arnaldo Carvalho de Melo <a...@redhat.com> Cc: Jiri Olsa <jo...@redhat.com> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Stephane Eranian <eran...@google.com> Cc: Suravee Suthikulpanit <suravee.suthikulpa...@amd.com> Cc: Thomas Gleixner <t...@linutronix.de> Cc: Vince Weaver <vincent.wea...@maine.edu> Link: http://lkml.kernel.org/r/1479399306-13375-1-git-send-email-janakarajan.natara...@amd.com Signed-off-by: Ingo Molnar <mi...@kernel.org> --- 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;
