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authorWaiman Long <longman@redhat.com>2024-03-07 14:05:47 -0500
committerAndrew Morton <akpm@linux-foundation.org>2024-04-25 20:56:05 -0700
commitb04da042208dc0de0de084a2a478d38ee0e51cce (patch)
treeada1117db9959c4f73b624535edabde03ce2f3a3 /mm/kmemleak.c
parentcc9bc36ebef70f3437caf712574478d5b95b25d4 (diff)
mm/kmemleak: compact kmemleak_object further
Patch series "mm/kmemleak: Minor cleanup & performance tuning". This series contains 2 simple cleanup patches to slightly reduce memory and performance overhead. This patch (of 2): With commit 56a61617dd22 ("mm: use stack_depot for recording kmemleak's backtrace"), the size of kmemleak_object has been reduced by 128 bytes for 64-bit arches. The replacement "depot_stack_handle_t trace_handle" is actually just 4 bytes long leaving a hole of 4 bytes. By moving up trace_handle to another existing 4-byte hold, we can save 8 more bytes from kmemleak_object reducing its overall size from 248 to 240 bytes. Link: https://lkml.kernel.org/r/20240307190548.963626-1-longman@redhat.com Link: https://lkml.kernel.org/r/20240307190548.963626-2-longman@redhat.com Signed-off-by: Waiman Long <longman@redhat.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/kmemleak.c')
-rw-r--r--mm/kmemleak.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index d2037073ed91..fdcf01f62202 100644
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -158,9 +158,9 @@ struct kmemleak_object {
int count;
/* checksum for detecting modified objects */
u32 checksum;
+ depot_stack_handle_t trace_handle;
/* memory ranges to be scanned inside an object (empty for all) */
struct hlist_head area_list;
- depot_stack_handle_t trace_handle;
unsigned long jiffies; /* creation timestamp */
pid_t pid; /* pid of the current task */
char comm[TASK_COMM_LEN]; /* executable name */