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| author | Mark-PK Tsai <mark-pk.tsai@mediatek.com> | 2023-10-06 08:02:40 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-10-18 23:34:16 +0200 |
| commit | afb2d666d0250e707eef3c5947165b414268244b (patch) | |
| tree | 09fe3515599f80dcef702dc4aae55d0ee5a5bcf1 | |
| parent | filemap: call filemap_get_folios_tag() from filemap_get_folios() (diff) | |
| download | linux-afb2d666d0250e707eef3c5947165b414268244b.tar.xz linux-afb2d666d0250e707eef3c5947165b414268244b.zip | |
zsmalloc: use copy_page for full page copy
Some architectures have implemented optimized copy_page for full page
copying, such as arm.
On my arm platform, use the copy_page helper for single page copying is
about 10 percent faster than memcpy.
Link: https://lkml.kernel.org/r/20231006060245.7411-1-mark-pk.tsai@mediatek.com
Signed-off-by: Mark-PK Tsai <mark-pk.tsai@mediatek.com>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: YJ Chiang <yj.chiang@mediatek.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | mm/zsmalloc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c index c743ce7a5f49..b1c0dad7f4cf 100644 --- a/mm/zsmalloc.c +++ b/mm/zsmalloc.c @@ -1839,7 +1839,7 @@ static int zs_page_migrate(struct page *newpage, struct page *page, * Here, any user cannot access all objects in the zspage so let's move. */ d_addr = kmap_atomic(newpage); - memcpy(d_addr, s_addr, PAGE_SIZE); + copy_page(d_addr, s_addr); kunmap_atomic(d_addr); for (addr = s_addr + offset; addr < s_addr + PAGE_SIZE; |