linux-kernel - [PATCH] kmemleak: fix unused-function warning

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Date:   Tue, 16 Apr 2019 14:31:24 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Catalin Marinas <catalin.marinas@....com>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Vincent Whitchurch <vincent.whitchurch@...s.com>,
        Michael Ellerman <mpe@...erman.id.au>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] kmemleak: fix unused-function warning

The only references outside of the #ifdef have been removed,
so now we get a warning in non-SMP configurations:

mm/kmemleak.c:1404:13: error: unused function 'scan_large_block' [-Werror,-Wunused-function]

Add a new #ifdef around it.

Fixes: 298a32b13208 ("kmemleak: powerpc: skip scanning holes in the .bss section")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 mm/kmemleak.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index 6c318f5ac234..2e435b8142e5 100644
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -1401,6 +1401,7 @@ static void scan_block(void *_start, void *_end,
 /*
  * Scan a large memory block in MAX_SCAN_SIZE chunks to reduce the latency.
  */
+#ifdef CONFIG_SMP
 static void scan_large_block(void *start, void *end)
 {
 	void *next;
@@ -1412,6 +1413,7 @@ static void scan_large_block(void *start, void *end)
 		cond_resched();
 	}
 }
+#endif
 
 /*
  * Scan a memory block corresponding to a kmemleak_object. A condition is
-- 
2.20.0