linux-kernel - [PATCH] ARC: perf: Remove redundant initialization of variable idx

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Message-Id: <20211126222312.1125594-1-colin.i.king@gmail.com>
Date:   Fri, 26 Nov 2021 22:23:12 +0000
From:   Colin Ian King <colin.i.king@...glemail.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Vineet Gupta <vgupta@...nel.org>,
        linux-perf-users@...r.kernel.org,
        linux-snps-arc@...ts.infradead.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ARC: perf: Remove redundant initialization of variable idx

The variable idx is being initialized with a value that is never
read, it is being updated later on. The assignment is redundant and
can be removed.

Signed-off-by: Colin Ian King <colin.i.king@...il.com>
---
 arch/arc/kernel/perf_event.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arc/kernel/perf_event.c b/arch/arc/kernel/perf_event.c
index 145722f80c9b..f5dd799ddb9e 100644
--- a/arch/arc/kernel/perf_event.c
+++ b/arch/arc/kernel/perf_event.c
@@ -361,7 +361,7 @@ static int arc_pmu_add(struct perf_event *event, int flags)
 {
 	struct arc_pmu_cpu *pmu_cpu = this_cpu_ptr(&arc_pmu_cpu);
 	struct hw_perf_event *hwc = &event->hw;
-	int idx = hwc->idx;
+	int idx;
 
 	idx = ffz(pmu_cpu->used_mask[0]);
 	if (idx == arc_pmu->n_counters)
-- 
2.33.1