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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-03-07 10:06:46 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-03-07 10:06:46 -0800 |
| commit | 8d521d94dacd2bcca5ef2054b6d9d9986da81423 (patch) | |
| tree | 8932d023b4c3ed09c4bbbe54c726f7800754f33f /mm | |
| parent | bdfa15f1a357bb90ab715e326e86cc546b282f49 (diff) | |
| parent | 1b046b445c0f856c3c1eed38a348bd87cc2dc730 (diff) | |
Merge branch 'for-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu
Pull percpu updates from Dennis Zhou:
"There are 2 minor changes to the percpu allocator this merge window:
- for loop condition that could be out of bounds on multi-socket UP
- cosmetic removal of pcpu_group_offsets[0] in UP code as it is 0
There has been an interest in having better alignment with percpu
allocations. This has caused a performance regression in at least one
reported workload. I have a series out which adds scan hints to the
allocator as well as some other performance oriented changes. I hope
to have this queued for v5.2 soon"
* 'for-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu:
percpu: km: no need to consider pcpu_group_offsets[0]
percpu: use nr_groups as check condition
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/percpu-km.c | 2 | ||||
| -rw-r--r-- | mm/percpu.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/mm/percpu-km.c b/mm/percpu-km.c index 0f643dc2dc65..b68d5df14731 100644 --- a/mm/percpu-km.c +++ b/mm/percpu-km.c @@ -67,7 +67,7 @@ static struct pcpu_chunk *pcpu_create_chunk(gfp_t gfp) pcpu_set_page_chunk(nth_page(pages, i), chunk); chunk->data = pages; - chunk->base_addr = page_address(pages) - pcpu_group_offsets[0]; + chunk->base_addr = page_address(pages); spin_lock_irqsave(&pcpu_lock, flags); pcpu_chunk_populated(chunk, 0, nr_pages, false); diff --git a/mm/percpu.c b/mm/percpu.c index db86282fd024..c5c750781628 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -2384,7 +2384,7 @@ static struct pcpu_alloc_info * __init pcpu_build_alloc_info( ai->atom_size = atom_size; ai->alloc_size = alloc_size; - for (group = 0, unit = 0; group_cnt[group]; group++) { + for (group = 0, unit = 0; group < nr_groups; group++) { struct pcpu_group_info *gi = &ai->groups[group]; /* |