linux-kernel - [PATCH 1/1] sysctl: Fix 'one_thousand' defined but not used warning

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Date:   Sun, 16 Jan 2022 17:23:17 -0800
From:   Suren Baghdasaryan <surenb@...gle.com>
To:     sfr@...b.auug.org.au
Cc:     akpm@...ux-foundation.org, torvalds@...ux-foundation.org,
        linux-kernel@...r.kernel.org, linux-next@...r.kernel.org,
        surenb@...gle.com
Subject: [PATCH 1/1] sysctl: Fix 'one_thousand' defined but not used warning

Fix the following warning issued when CONFIG_PERF_EVENTS is not
defined:

kernel/sysctl.c:125:12: warning: 'one_thousand' defined but not used [-Wunused-variable]

Fixes: 39c65a94cd96 ("mm/pagealloc: sysctl: change watermark_scale_factor max limit to 30%")
Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
Signed-off-by: Suren Baghdasaryan <surenb@...gle.com>
---
 kernel/sysctl.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index ef77be575d87..81a6f2d47f77 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -122,7 +122,9 @@ static unsigned long one_ul = 1;
 static unsigned long long_max = LONG_MAX;
 static int one_hundred = 100;
 static int two_hundred = 200;
+#ifdef CONFIG_PERF_EVENTS
 static int one_thousand = 1000;
+#endif
 static int three_thousand = 3000;
 #ifdef CONFIG_PRINTK
 static int ten_thousand = 10000;
-- 
2.34.1.703.g22d0c6ccf7-goog