From: Qian Cai <cai@lca.pw>
To: akpm@linux-foundation.org
Cc: catalin.marinas@arm.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, Qian Cai <cai@lca.pw>
Subject: [PATCH -next] mm/kmemleak: increase the max mem pool to 1M
Date: Wed, 14 Aug 2019 14:32:52 -0400 [thread overview]
Message-ID: <1565807572-26041-1-git-send-email-cai@lca.pw> (raw)
There are some machines with slow disk and fast CPUs. When they are
under memory pressure, it could take a long time to swap before the OOM
kicks in to free up some memory. As the results, it needs a large
mem pool for kmemleak or suffering from higher chance of a kmemleak
metadata allocation failure. 524288 proves to be the good number for all
architectures here. Increase the upper bound to 1M to leave some room
for the future.
Signed-off-by: Qian Cai <cai@lca.pw>
---
lib/Kconfig.debug | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index e80a745a11e2..d962c72a8bb5 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -595,7 +595,7 @@ config DEBUG_KMEMLEAK
config DEBUG_KMEMLEAK_MEM_POOL_SIZE
int "Kmemleak memory pool size"
depends on DEBUG_KMEMLEAK
- range 200 40000
+ range 200 1000000
default 16000
help
Kmemleak must track all the memory allocations to avoid
--
1.8.3.1
next reply other threads:[~2019-08-14 18:33 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-14 18:32 Qian Cai [this message]
2019-08-15 8:58 ` Catalin Marinas
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