mm/kmemleak.c: record the current memory pool size

The only way to obtain the current memory pool size for a running kernel
is to check the kernel config file which is inconvenient.  Record it in
the kernel messages.

[akpm@linux-foundation.org: s/memory pool size/memory pool/available/, per Catalin]
Link: http://lkml.kernel.org/r/1565809631-28933-1-git-send-email-cai@lca.pw
Signed-off-by: Qian Cai <cai@lca.pw>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index b8bbe9ac547262820137a912d136ea2fe74b30dd..03a8d84badada040c3b8e16200e244ef9ba10094 100644 (file)
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -1967,7 +1967,8 @@ static int __init kmemleak_late_init(void)
                mutex_unlock(&scan_mutex);
        }
 
-       pr_info("Kernel memory leak detector initialized\n");
+       pr_info("Kernel memory leak detector initialized (mem pool available: %d)\n",
+               mem_pool_free_count);
 
        return 0;
 }