linux-kernel - [PATCH] x86/CPU: drop set but unused variable

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Date:   Tue,  5 Jul 2022 15:33:49 +0800
From:   Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
To:     tglx@...utronix.de
Cc:     mingo@...hat.com, bp@...en8.de, dave.hansen@...ux.intel.com,
        x86@...nel.org, hpa@...or.com, linux-kernel@...r.kernel.org,
        Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
Subject: [PATCH] x86/CPU: drop set but unused variable

The following warning showed up when compiling with W=1.

arch/x86/kernel/cpu/cacheinfo.c:730:15: warning: variable 'trace' set but not used [-Wunused-but-set-variable].

Signed-off-by: Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
---
 arch/x86/kernel/cpu/cacheinfo.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/cpu/cacheinfo.c b/arch/x86/kernel/cpu/cacheinfo.c
index 66556833d7af..7ef070fbc14c 100644
--- a/arch/x86/kernel/cpu/cacheinfo.c
+++ b/arch/x86/kernel/cpu/cacheinfo.c
@@ -727,7 +727,7 @@ void init_hygon_cacheinfo(struct cpuinfo_x86 *c)
 void init_intel_cacheinfo(struct cpuinfo_x86 *c)
 {
 	/* Cache sizes */
-	unsigned int trace = 0, l1i = 0, l1d = 0, l2 = 0, l3 = 0;
+	unsigned int l1i = 0, l1d = 0, l2 = 0, l3 = 0;
 	unsigned int new_l1d = 0, new_l1i = 0; /* Cache sizes from cpuid(4) */
 	unsigned int new_l2 = 0, new_l3 = 0, i; /* Cache sizes from cpuid(4) */
 	unsigned int l2_id = 0, l3_id = 0, num_threads_sharing, index_msb;
@@ -828,9 +828,11 @@ void init_intel_cacheinfo(struct cpuinfo_x86 *c)
 						case LVL_3:
 							l3 += cache_table[k].size;
 							break;
-						case LVL_TRACE:
-							trace += cache_table[k].size;
-							break;
+						/*
+						 * case LVL_TRACE:
+						 *	trace += cache_table[k].size;
+						 *	break;
+						 */
 						}
 
 						break;
-- 
2.20.1.7.g153144c