linux-kernel - [PATCH V4 01/14] perf/x86/intel: Introduce the fourth fixed counter

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Date:   Mon, 16 Sep 2019 06:41:15 -0700
From:   kan.liang@...ux.intel.com
To:     peterz@...radead.org, acme@...nel.org, mingo@...hat.com,
        linux-kernel@...r.kernel.org
Cc:     tglx@...utronix.de, jolsa@...nel.org, eranian@...gle.com,
        alexander.shishkin@...ux.intel.com, ak@...ux.intel.com,
        Kan Liang <kan.liang@...ux.intel.com>
Subject: [PATCH V4 01/14] perf/x86/intel: Introduce the fourth fixed counter

From: Kan Liang <kan.liang@...ux.intel.com>

The fourth fixed counter, TOPDOWN.SLOTS, is introduced in Ice Lake.

Add MSR address and macros for the new fixed counter, which will be used
in the following patch.

Signed-off-by: Kan Liang <kan.liang@...ux.intel.com>
---

New patch for V4

 arch/x86/include/asm/perf_event.h | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/arch/x86/include/asm/perf_event.h b/arch/x86/include/asm/perf_event.h
index ee26e9215f18..9f15a700d1db 100644
--- a/arch/x86/include/asm/perf_event.h
+++ b/arch/x86/include/asm/perf_event.h
@@ -146,12 +146,12 @@ struct x86_pmu_capability {
  */
 
 /*
- * All 3 fixed-mode PMCs are configured via this single MSR:
+ * All 4 fixed-mode PMCs are configured via this single MSR:
  */
 #define MSR_ARCH_PERFMON_FIXED_CTR_CTRL	0x38d
 
 /*
- * The counts are available in three separate MSRs:
+ * The counts are available in four separate MSRs:
  */
 
 /* Instr_Retired.Any: */
@@ -167,6 +167,11 @@ struct x86_pmu_capability {
 #define INTEL_PMC_IDX_FIXED_REF_CYCLES	(INTEL_PMC_IDX_FIXED + 2)
 #define INTEL_PMC_MSK_FIXED_REF_CYCLES	(1ULL << INTEL_PMC_IDX_FIXED_REF_CYCLES)
 
+/* TOPDOWN.SLOTS: */
+#define MSR_ARCH_PERFMON_FIXED_CTR3	0x30c
+#define INTEL_PMC_IDX_FIXED_SLOTS	(INTEL_PMC_IDX_FIXED + 3)
+#define INTEL_PMC_MSK_FIXED_SLOTS	(1ULL << INTEL_PMC_IDX_FIXED_SLOTS)
+
 /*
  * We model BTS tracing as another fixed-mode PMC.
  *
-- 
2.17.1