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| author | Baoquan He <[email protected]> | 2025-04-18 22:36:49 +0000 |
|---|---|---|
| committer | Andrew Morton <[email protected]> | 2025-05-13 06:50:31 +0000 |
| commit | f7f68274e476c49e29bfb81daf4ad717fe9880c6 (patch) | |
| tree | 398e6017c77bd7273bdb8cc70708ba25d3b1615c | |
| parent | Update Christoph's Email address and make it consistent (diff) | |
| download | kernel-f7f68274e476c49e29bfb81daf4ad717fe9880c6.tar.gz kernel-f7f68274e476c49e29bfb81daf4ad717fe9880c6.zip | |
mm/vmalloc.c: change purge_ndoes as local static variable
Patch series "mm/vmalloc.c: code cleanup and improvements", v2.
These changes were made from code inspection in mm/vmalloc.c.
This patch (of 5):
Static variable 'purge_ndoes' is defined in global scope, while it's only
used in function __purge_vmap_area_lazy(). It mainly serves to avoid
memory allocation repeatedly, especially when NR_CPUS is big.
While a local static variable can also satisfy the demand, and can improve
code readibility. Hence move its definition into
__purge_vmap_area_lazy().
Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Baoquan He <[email protected]>
Reviewed-by: Uladzislau Rezki (Sony) <[email protected]>
Reviewed-by: Vishal Moola (Oracle) <[email protected]>
Reviewed-by: Shivank Garg <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
| -rw-r--r-- | mm/vmalloc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 3fd802134e4e..cd733387b1a0 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -2127,7 +2127,6 @@ static DEFINE_MUTEX(vmap_purge_lock); /* for per-CPU blocks */ static void purge_fragmented_blocks_allcpus(void); -static cpumask_t purge_nodes; static void reclaim_list_global(struct list_head *head) @@ -2260,6 +2259,7 @@ static bool __purge_vmap_area_lazy(unsigned long start, unsigned long end, { unsigned long nr_purged_areas = 0; unsigned int nr_purge_helpers; + static cpumask_t purge_nodes; unsigned int nr_purge_nodes; struct vmap_node *vn; int i; |