diff options
| author | Kefeng Wang <[email protected]> | 2024-04-12 14:47:51 +0800 |
|---|---|---|
| committer | Andrew Morton <[email protected]> | 2024-05-05 17:53:36 -0700 |
| commit | ceca44991f3dd5a67b4e0ded6379c5e93e84cb31 (patch) | |
| tree | 4f7ad9b13b913f3a771cd63f9f6a697ceb420429 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 1f2d8b4421bd0da2c97fb8bad5cc85fc929fef64 (diff) | |
mm: filemap: batch mm counter updating in filemap_map_pages()
Like copy_pte_range()/zap_pte_range(), make mm counter batch updating in
filemap_map_pages(), since folios type are same(MM_SHMEMPAGES or
MM_FILEPAGES) in filemap_map_pages(), only check the first folio type is
enough, the 'lat_pagefault -P 1 file' test from lmbench shows 12%
improvement, and the percpu_counter_add_batch() is gone from perf flame
graph.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Kefeng Wang <[email protected]>
Cc: Matthew Wilcox (Oracle) <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions