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| author | Waiman Long <longman@redhat.com> | 2024-03-07 20:05:47 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-04-26 05:56:05 +0200 |
| commit | b04da042208dc0de0de084a2a478d38ee0e51cce (patch) | |
| tree | ada1117db9959c4f73b624535edabde03ce2f3a3 /mm/kmemleak.c | |
| parent | mm: zswap: remove nr_zswap_stored atomic (diff) | |
| download | linux-b04da042208dc0de0de084a2a478d38ee0e51cce.tar.xz linux-b04da042208dc0de0de084a2a478d38ee0e51cce.zip | |
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.c | 2 |
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 */ |