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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2022-09-06 19:48:58 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-09-26 19:46:22 -0700 |
| commit | fcb72a585aaa4caced555e98f8444e6162912cb7 (patch) | |
| tree | 1d69d3f4694fb5b8cb8a946874dc9cf2a538c17e /kernel/events/core.c | |
| parent | 160c820023bbfe7c478ed3041cc50604d664f047 (diff) | |
| download | lwn-fcb72a585aaa4caced555e98f8444e6162912cb7.tar.gz lwn-fcb72a585aaa4caced555e98f8444e6162912cb7.zip | |
perf: use VMA iterator
The VMA iterator is faster than the linked list and removing the linked
list will shrink the vm_area_struct.
Link: https://lkml.kernel.org/r/20220906194824.2110408-48-Liam.Howlett@oracle.com
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>
Tested-by: Yu Zhao <yuzhao@google.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: David Howells <dhowells@redhat.com>
Cc: SeongJae Park <sj@kernel.org>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'kernel/events/core.c')
| -rw-r--r-- | kernel/events/core.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index 2621fd24ad26..101c5912c3fc 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -10229,8 +10229,9 @@ static void perf_addr_filter_apply(struct perf_addr_filter *filter, struct perf_addr_filter_range *fr) { struct vm_area_struct *vma; + VMA_ITERATOR(vmi, mm, 0); - for (vma = mm->mmap; vma; vma = vma->vm_next) { + for_each_vma(vmi, vma) { if (!vma->vm_file) continue; |