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From: Dapeng Mi <dapeng1.mi@linux.intel.com>
To: Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	Namhyung Kim <namhyung@kernel.org>,
	Ian Rogers <irogers@google.com>,
	Adrian Hunter <adrian.hunter@intel.com>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Kan Liang <kan.liang@linux.intel.com>,
	Andi Kleen <ak@linux.intel.com>,
	Eranian Stephane <eranian@google.com>
Cc: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
	Dapeng Mi <dapeng1.mi@intel.com>,
	Dapeng Mi <dapeng1.mi@linux.intel.com>,
	Yi Lai <yi1.lai@intel.com>
Subject: [Patch v3 5/7] perf/x86/intel: Change macro GLOBAL_CTRL_EN_PERF_METRICS to BIT_ULL(48)
Date: Wed, 20 Aug 2025 10:30:30 +0800	[thread overview]
Message-ID: <20250820023032.17128-6-dapeng1.mi@linux.intel.com> (raw)
In-Reply-To: <20250820023032.17128-1-dapeng1.mi@linux.intel.com>

Macro GLOBAL_CTRL_EN_PERF_METRICS is defined to 48 instead of
BIT_ULL(48), it's inconsistent with other similar macros. This leads to
this macro is quite easily used wrongly since users thinks it's a
bit-mask just like other similar macros.

Thus change GLOBAL_CTRL_EN_PERF_METRICS to BIT_ULL(48) and eliminate
this potential misuse.

Signed-off-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Tested-by: Yi Lai <yi1.lai@intel.com>
---
 arch/x86/events/intel/core.c      | 8 ++++----
 arch/x86/include/asm/perf_event.h | 2 +-
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index 15da60cf69f2..f88a99d8d125 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -5319,9 +5319,9 @@ static void intel_pmu_check_hybrid_pmus(struct x86_hybrid_pmu *pmu)
 						0, x86_pmu_num_counters(&pmu->pmu), 0, 0);
 
 	if (pmu->intel_cap.perf_metrics)
-		pmu->intel_ctrl |= 1ULL << GLOBAL_CTRL_EN_PERF_METRICS;
+		pmu->intel_ctrl |= GLOBAL_CTRL_EN_PERF_METRICS;
 	else
-		pmu->intel_ctrl &= ~(1ULL << GLOBAL_CTRL_EN_PERF_METRICS);
+		pmu->intel_ctrl &= ~GLOBAL_CTRL_EN_PERF_METRICS;
 
 	intel_pmu_check_event_constraints(pmu->event_constraints,
 					  pmu->cntr_mask64,
@@ -5456,7 +5456,7 @@ static void intel_pmu_cpu_starting(int cpu)
 		rdmsrq(MSR_IA32_PERF_CAPABILITIES, perf_cap.capabilities);
 		if (!perf_cap.perf_metrics) {
 			x86_pmu.intel_cap.perf_metrics = 0;
-			x86_pmu.intel_ctrl &= ~(1ULL << GLOBAL_CTRL_EN_PERF_METRICS);
+			x86_pmu.intel_ctrl &= ~GLOBAL_CTRL_EN_PERF_METRICS;
 		}
 	}
 
@@ -7790,7 +7790,7 @@ __init int intel_pmu_init(void)
 	}
 
 	if (!is_hybrid() && x86_pmu.intel_cap.perf_metrics)
-		x86_pmu.intel_ctrl |= 1ULL << GLOBAL_CTRL_EN_PERF_METRICS;
+		x86_pmu.intel_ctrl |= GLOBAL_CTRL_EN_PERF_METRICS;
 
 	if (x86_pmu.intel_cap.pebs_timing_info)
 		x86_pmu.flags |= PMU_FL_RETIRE_LATENCY;
diff --git a/arch/x86/include/asm/perf_event.h b/arch/x86/include/asm/perf_event.h
index 70d1d94aca7e..f8247ac276c4 100644
--- a/arch/x86/include/asm/perf_event.h
+++ b/arch/x86/include/asm/perf_event.h
@@ -430,7 +430,7 @@ static inline bool is_topdown_idx(int idx)
 #define GLOBAL_STATUS_TRACE_TOPAPMI		BIT_ULL(GLOBAL_STATUS_TRACE_TOPAPMI_BIT)
 #define GLOBAL_STATUS_PERF_METRICS_OVF_BIT	48
 
-#define GLOBAL_CTRL_EN_PERF_METRICS		48
+#define GLOBAL_CTRL_EN_PERF_METRICS		BIT_ULL(48)
 /*
  * We model guest LBR event tracing as another fixed-mode PMC like BTS.
  *
-- 
2.34.1


  parent reply	other threads:[~2025-08-20  2:31 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-08-20  2:30 [Patch v3 0/7] x86 perf bug fixes and optimization Dapeng Mi
2025-08-20  2:30 ` [Patch v3 1/7] perf/x86/intel: Use early_initcall() to hook bts_init() Dapeng Mi
2025-08-25 10:24   ` [tip: perf/core] " tip-bot2 for Dapeng Mi
2025-08-20  2:30 ` [Patch v3 2/7] perf/x86/intel: Fix IA32_PMC_x_CFG_B MSRs access error Dapeng Mi
2025-08-25 10:24   ` [tip: perf/core] " tip-bot2 for Dapeng Mi
2025-08-20  2:30 ` [Patch v3 3/7] perf/x86: Check if cpuc->events[*] pointer exists before accessing it Dapeng Mi
2025-08-20  3:41   ` Andi Kleen
2025-08-20  5:33     ` Mi, Dapeng
2025-08-20  5:44       ` Andi Kleen
2025-08-20  5:54         ` Mi, Dapeng
2025-08-21  1:51           ` Andi Kleen
2025-08-21 13:35   ` Peter Zijlstra
2025-08-22  5:26     ` Mi, Dapeng
2025-08-26  3:47       ` Mi, Dapeng
2025-08-20  2:30 ` [Patch v3 4/7] perf/x86: Add PERF_CAP_PEBS_TIMING_INFO flag Dapeng Mi
2025-08-25 10:24   ` [tip: perf/core] " tip-bot2 for Dapeng Mi
2025-08-20  2:30 ` Dapeng Mi [this message]
2025-08-25 10:24   ` [tip: perf/core] perf/x86/intel: Change macro GLOBAL_CTRL_EN_PERF_METRICS to BIT_ULL(48) tip-bot2 for Dapeng Mi
2025-10-02 16:19   ` [Patch v3 5/7] " ChaosEsque Team
2025-08-20  2:30 ` [Patch v3 6/7] perf/x86/intel: Add ICL_FIXED_0_ADAPTIVE bit into INTEL_FIXED_BITS_MASK Dapeng Mi
2025-08-25 10:24   ` [tip: perf/core] " tip-bot2 for Dapeng Mi
2025-08-20  2:30 ` [Patch v3 7/7] perf/x86: Print PMU counters bitmap in x86_pmu_show_pmu_cap() Dapeng Mi
2025-08-25 10:24   ` [tip: perf/core] " tip-bot2 for Dapeng Mi
2025-08-20 15:55 ` [Patch v3 0/7] x86 perf bug fixes and optimization Liang, Kan
2025-08-21 13:39   ` Peter Zijlstra
2025-08-22  5:29     ` Mi, Dapeng

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