diff options
| author |   Kairui Song <kasong@tencent.com> | 2025-01-14 01:57:29 +0800 |
|---|---|---|
| committer |   Andrew Morton <akpm@linux-foundation.org> | 2025-01-25 20:22:37 -0800 |
| commit | e3ae2dec849ba8bc5649c2d0507e02bd4379da71 (patch) | |
| tree | 1942bf0e08de3ba5f6f60376b02302aeb6e71f23 /scripts/gcc-plugins/structleak_plugin.c | |
| parent | mm, swap: reduce contention on device lock (diff) | |
| download | wireguard-linux-e3ae2dec849ba8bc5649c2d0507e02bd4379da71.tar.xz wireguard-linux-e3ae2dec849ba8bc5649c2d0507e02bd4379da71.zip | |
mm, swap: simplify percpu cluster updating
Instead of using a returning argument, we can simply store the next
cluster offset to the fixed percpu location, which reduce the stack usage
and simplify the function:
Object size:
./scripts/bloat-o-meter mm/swapfile.o mm/swapfile.o.new
add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-271 (-271)
Function old new delta
get_swap_pages 2847 2733 -114
alloc_swap_scan_cluster 894 737 -157
Total: Before=30833, After=30562, chg -0.88%
Stack usage:
Before:
swapfile.c:1190:5:get_swap_pages 240 static
After:
swapfile.c:1185:5:get_swap_pages 216 static
Link: https://lkml.kernel.org/r/20250113175732.48099-11-ryncsn@gmail.com
Signed-off-by: Kairui Song <kasong@tencent.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Barry Song <v-songbaohua@oppo.com>
Cc: Chis Li <chrisl@kernel.org>
Cc: "Huang, Ying" <ying.huang@linux.alibaba.com>
Cc: Hugh Dickens <hughd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kalesh Singh <kaleshsingh@google.com>
Cc: Nhat Pham <nphamcs@gmail.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Yosry Ahmed <yosryahmed@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions