perf/x86/intel: Support Extended PEBS for Goldmont Plus

Enable the extended PEBS for Goldmont Plus.

There is no specific PEBS constrains for Goldmont Plus. Removing the
pebs_constraints for Goldmont Plus.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: acme@kernel.org
Link: http://lkml.kernel.org/r/20180309021542.11374-4-kan.liang@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index b1a49a1..035c374 100644 (file)
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -4077,7 +4077,6 @@ __init int intel_pmu_init(void)
                intel_pmu_lbr_init_skl();
 
                x86_pmu.event_constraints = intel_slm_event_constraints;
-               x86_pmu.pebs_constraints = intel_glp_pebs_event_constraints;
                x86_pmu.extra_regs = intel_glm_extra_regs;
                /*
                 * It's recommended to use CPU_CLK_UNHALTED.CORE_P + NPEBS
@@ -4087,6 +4086,7 @@ __init int intel_pmu_init(void)
                x86_pmu.pebs_prec_dist = true;
                x86_pmu.lbr_pt_coexist = true;
                x86_pmu.flags |= PMU_FL_HAS_RSP_1;
+               x86_pmu.flags |= PMU_FL_PEBS_ALL;
                x86_pmu.get_event_constraints = glp_get_event_constraints;
                x86_pmu.cpu_events = glm_events_attrs;
                /* Goldmont Plus has 4-wide pipeline */

diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c
index 595b96a..b7b01d7 100644 (file)
--- a/arch/x86/events/intel/ds.c
+++ b/arch/x86/events/intel/ds.c
@@ -713,12 +713,6 @@ struct event_constraint intel_glm_pebs_event_constraints[] = {
        EVENT_CONSTRAINT_END
 };
 
-struct event_constraint intel_glp_pebs_event_constraints[] = {
-       /* Allow all events as PEBS with no flags */
-       INTEL_ALL_EVENT_CONSTRAINT(0, 0xf),
-       EVENT_CONSTRAINT_END
-};
-
 struct event_constraint intel_nehalem_pebs_event_constraints[] = {
        INTEL_PLD_CONSTRAINT(0x100b, 0xf),      /* MEM_INST_RETIRED.* */
        INTEL_FLAGS_EVENT_CONSTRAINT(0x0f, 0xf),    /* MEM_UNCORE_RETIRED.* */