linux-kernel - [PATCH] arm64: perf: no need to initialise statics to 0

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Date:   Sun,  8 May 2022 10:23:12 +0800
From:   Jason Wang <wangborong@...rlc.com>
To:     mark.rutland@....com
Cc:     will@...nel.org, catalin.marinas@....com, peterz@...radead.org,
        mingo@...hat.com, acme@...nel.org,
        alexander.shishkin@...ux.intel.com, jolsa@...nel.org,
        namhyung@...nel.org, linux-arm-kernel@...ts.infradead.org,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jason Wang <wangborong@...rlc.com>
Subject: [PATCH] arm64: perf: no need to initialise statics to 0

Static variables do not need to be initialised to 0, because compiler
will initialise all uninitialised statics to 0. Thus, remove the
unneeded initializations.

Signed-off-by: Jason Wang <wangborong@...rlc.com>
---
 arch/arm64/kernel/perf_event.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c
index cb69ff1e6138..919fdcf8fce6 100644
--- a/arch/arm64/kernel/perf_event.c
+++ b/arch/arm64/kernel/perf_event.c
@@ -1226,7 +1226,7 @@ static struct ctl_table armv8_pmu_sysctl_table[] = {
 
 static void armv8_pmu_register_sysctl_table(void)
 {
-	static u32 tbl_registered = 0;
+	static u32 tbl_registered;
 
 	if (!cmpxchg_relaxed(&tbl_registered, 0, 1))
 		register_sysctl("kernel", armv8_pmu_sysctl_table);
-- 
2.35.1