From: Casey Chen <cachen@purestorage.com>
To: linux-mm@kvack.org
Cc: surenb@google.com, kent.overstreet@linux.dev,
yzhong@purestorage.com, Casey Chen <cachen@purestorage.com>
Subject: [PATCH v2] alloc_tag: check mem_profiling_support in alloc_tag_init
Date: Thu, 8 May 2025 17:47:42 -0600 [thread overview]
Message-ID: <20250508234742.93114-1-cachen@purestorage.com> (raw)
Allocate module tags and register codetag type only when
mem_profiling_support is true. If it is set as false,
for example by sysctl.vm.mem_profiling=never, skip them.
Signed-off-by: Casey Chen <cachen@purestorage.com>
Reviewed-by: Yuanyuan Zhong <yzhong@purestorage.com>
---
lib/alloc_tag.c | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)
diff --git a/lib/alloc_tag.c b/lib/alloc_tag.c
index 25ecc1334b67..fbf128072c7e 100644
--- a/lib/alloc_tag.c
+++ b/lib/alloc_tag.c
@@ -762,14 +762,16 @@ static int __init alloc_tag_init(void)
};
int res;
- res = alloc_mod_tags_mem();
- if (res)
- return res;
-
- alloc_tag_cttype = codetag_register_type(&desc);
- if (IS_ERR(alloc_tag_cttype)) {
- free_mod_tags_mem();
- return PTR_ERR(alloc_tag_cttype);
+ if (mem_profiling_support) {
+ res = alloc_mod_tags_mem();
+ if (res)
+ return res;
+
+ alloc_tag_cttype = codetag_register_type(&desc);
+ if (IS_ERR(alloc_tag_cttype)) {
+ free_mod_tags_mem();
+ return PTR_ERR(alloc_tag_cttype);
+ }
}
sysctl_init();
--
2.49.0
next reply other threads:[~2025-05-08 23:47 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-08 23:47 Casey Chen [this message]
2025-05-09 16:11 ` Suren Baghdasaryan
2025-05-12 16:48 ` Suren Baghdasaryan
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