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[PATCH 10/10] x86, perf: Add Top Down events to Intel Atom

From Andi Kleen <andi@firstfloor.org>
Newsgroups linux.kernel
Subject [PATCH 10/10] x86, perf: Add Top Down events to Intel Atom
Date 2015-12-16 02:00 +0100
Message-ID <qG8BI-3aD-9@gated-at.bofh.it> (permalink)
References <qG8BH-3aD-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

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From: Andi Kleen <ak@linux.intel.com>

Add topdown event declarations to Silvermont / Airmont.
These cores do not support the full Top Down metrics, but an useful
subset (FrontendBound, Retiring, Backend Bound/Bad Speculation).

The perf stat tool automatically handles the missing events
and combines the available metrics.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
---
 arch/x86/kernel/cpu/perf_event_intel.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c
index 2eb50f7..432b9c9 100644
--- a/arch/x86/kernel/cpu/perf_event_intel.c
+++ b/arch/x86/kernel/cpu/perf_event_intel.c
@@ -1379,6 +1379,29 @@ static __initconst const u64 atom_hw_cache_event_ids
  },
 };
 
+EVENT_ATTR_STR(topdown-total-slots, td_total_slots_slm, "event=0x3c");
+EVENT_ATTR_STR(topdown-total-slots.scale, td_total_slots_scale_slm, "2");
+/* no_alloc_cycles.not_delivered */
+EVENT_ATTR_STR(topdown-fetch-bubbles, td_fetch_bubbles_slm,
+	       "event=0xca,umask=0x50");
+EVENT_ATTR_STR(topdown-fetch-bubbles.scale, td_fetch_bubbles_scale_slm, "2");
+/* uops_retired.all */
+EVENT_ATTR_STR(topdown-slots-issued, td_slots_issued_slm,
+	       "event=0xc2,umask=0x10");
+/* uops_retired.all */
+EVENT_ATTR_STR(topdown-slots-retired, td_slots_retired_slm,
+	       "event=0xc2,umask=0x10");
+
+static struct attribute *slm_events_attrs[] = {
+	EVENT_PTR(td_total_slots_slm),
+	EVENT_PTR(td_total_slots_scale_slm),
+	EVENT_PTR(td_fetch_bubbles_slm),
+	EVENT_PTR(td_fetch_bubbles_scale_slm),
+	EVENT_PTR(td_slots_issued_slm),
+	EVENT_PTR(td_slots_retired_slm),
+	NULL
+};
+
 static struct extra_reg intel_slm_extra_regs[] __read_mostly =
 {
 	/* must define OFFCORE_RSP_X first, see intel_fixup_er() */
@@ -3416,6 +3439,7 @@ __init int intel_pmu_init(void)
 		x86_pmu.pebs_constraints = intel_slm_pebs_event_constraints;
 		x86_pmu.extra_regs = intel_slm_extra_regs;
 		x86_pmu.flags |= PMU_FL_HAS_RSP_1;
+		x86_pmu.cpu_events = slm_events_attrs;
 		pr_cont("Silvermont events, ");
 		break;
 
-- 
2.4.3

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Thread

Add top down metrics to perf stat v2 Andi Kleen <andi@firstfloor.org> - 2015-12-16 02:00 +0100
  [PATCH 07/10] perf, tools, stat: Add extra output of counter values with -v Andi Kleen <andi@firstfloor.org> - 2015-12-16 02:00 +0100
  [PATCH 10/10] x86, perf: Add Top Down events to Intel Atom Andi Kleen <andi@firstfloor.org> - 2015-12-16 02:00 +0100
  [PATCH 04/10] perf, tools, stat: Scale values by unit before metrics Andi Kleen <andi@firstfloor.org> - 2015-12-16 02:00 +0100
  [PATCH 09/10] x86, perf: Add Top Down events to Intel Core Andi Kleen <andi@firstfloor.org> - 2015-12-16 02:00 +0100
  [PATCH 03/10] perf, tools, stat: Avoid fractional digits for integer scales Andi Kleen <andi@firstfloor.org> - 2015-12-16 02:00 +0100
    Re: [PATCH 03/10] perf, tools, stat: Avoid fractional digits for  integer scales Stephane Eranian <eranian@google.com> - 2015-12-16 15:30 +0100
  [PATCH 05/10] perf, tools, stat: Basic support for TopDown in perf stat Andi Kleen <andi@firstfloor.org> - 2015-12-16 02:00 +0100
    Re: [PATCH 05/10] perf, tools, stat: Basic support for TopDown in  perf stat Stephane Eranian <eranian@google.com> - 2015-12-16 15:40 +0100
      Re: [PATCH 05/10] perf, tools, stat: Basic support for TopDown in  perf stat Andi Kleen <andi@firstfloor.org> - 2015-12-16 22:30 +0100
        Re: [PATCH 05/10] perf, tools, stat: Basic support for TopDown in  perf stat Stephane Eranian <eranian@google.com> - 2015-12-17 10:30 +0100
          Re: [PATCH 05/10] perf, tools, stat: Basic support for TopDown in  perf stat Andi Kleen <andi@firstfloor.org> - 2015-12-17 15:10 +0100
  [PATCH 08/10] x86, perf: Support sysfs files depending on SMT status Andi Kleen <andi@firstfloor.org> - 2015-12-16 02:00 +0100
    Re: [PATCH 08/10] x86, perf: Support sysfs files depending on SMT  status Peter Zijlstra <peterz@infradead.org> - 2015-12-16 10:00 +0100
    Re: [PATCH 08/10] x86, perf: Support sysfs files depending on SMT status Stephane Eranian <eranian@google.com> - 2015-12-16 13:50 +0100
      Re: [PATCH 08/10] x86, perf: Support sysfs files depending on SMT  status Andi Kleen <andi@firstfloor.org> - 2015-12-16 17:30 +0100
  [PATCH 01/10] perf, tools: Dont stop PMU parsing on alias parse error Andi Kleen <andi@firstfloor.org> - 2015-12-16 02:00 +0100
    Re: [PATCH 01/10] perf, tools: Dont stop PMU parsing on alias parse  error Jiri Olsa <jolsa@redhat.com> - 2015-12-21 17:10 +0100
  [PATCH 02/10] perf, tools, stat: Force --per-core mode for .agg-per-core aliases Andi Kleen <andi@firstfloor.org> - 2015-12-16 02:00 +0100
    Re: [PATCH 02/10] perf, tools, stat: Force --per-core mode for  .agg-per-core aliases Stephane Eranian <eranian@google.com> - 2015-12-16 15:20 +0100
    Re: [PATCH 02/10] perf, tools, stat: Force --per-core mode for  .agg-per-core aliases Jiri Olsa <jolsa@redhat.com> - 2015-12-21 17:20 +0100
    Re: [PATCH 02/10] perf, tools, stat: Force --per-core mode for  .agg-per-core aliases Jiri Olsa <jolsa@redhat.com> - 2015-12-21 17:20 +0100
  [PATCH 06/10] perf, tools, stat: Add computation of TopDown formulas Andi Kleen <andi@firstfloor.org> - 2015-12-16 02:00 +0100
  Re: Add top down metrics to perf stat v2 Stephane Eranian <eranian@google.com> - 2015-12-17 11:30 +0100
    Re: Add top down metrics to perf stat v2 Andi Kleen <andi@firstfloor.org> - 2015-12-17 15:10 +0100
      Re: Add top down metrics to perf stat v2 Stephane Eranian <eranian@google.com> - 2015-12-18 00:40 +0100
        Re: Add top down metrics to perf stat v2 Andi Kleen <andi@firstfloor.org> - 2015-12-18 03:00 +0100
          Re: Add top down metrics to perf stat v2 Stephane Eranian <eranian@google.com> - 2015-12-18 10:40 +0100
            Re: Add top down metrics to perf stat v2 Andi Kleen <andi@firstfloor.org> - 2015-12-18 22:40 +0100

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