linux-kernel - [PATCH v2 1/2] LoongArch: Use CPUCFG6_PMNUM

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Message-ID: <20251110025906.17096-2-yangtiezhu@loongson.cn>
Date: Mon, 10 Nov 2025 10:59:05 +0800
From: Tiezhu Yang <yangtiezhu@...ngson.cn>
To: Huacai Chen <chenhuacai@...nel.org>
Cc: loongarch@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/2] LoongArch: Use CPUCFG6_PMNUM_SHIFT to get PMU number

Use the existing CPUCFG6_PMNUM_SHIFT macro definition instead of
the magic value 4 to get the PMU number.

Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
---
 arch/loongarch/kernel/perf_event.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/loongarch/kernel/perf_event.c b/arch/loongarch/kernel/perf_event.c
index 8ad098703488..2d0c14bdadda 100644
--- a/arch/loongarch/kernel/perf_event.c
+++ b/arch/loongarch/kernel/perf_event.c
@@ -851,7 +851,7 @@ static int __init init_hw_perf_events(void)
 		return -ENODEV;
 
 	pr_info("Performance counters: ");
-	counters = ((read_cpucfg(LOONGARCH_CPUCFG6) & CPUCFG6_PMNUM) >> 4) + 1;
+	counters = ((read_cpucfg(LOONGARCH_CPUCFG6) & CPUCFG6_PMNUM) >> CPUCFG6_PMNUM_SHIFT) + 1;
 
 	loongarch_pmu.num_counters = counters;
 	loongarch_pmu.max_period = (1ULL << 63) - 1;
-- 
2.42.0