[PATCH v2 41/61] kernel/events/core: Use maple tree iterators instead of linked list
From: Liam Howlett <hidden>
Date: 2021-08-17 15:54:53
Also in:
lkml
Subsystem:
performance events subsystem, the rest · Maintainers:
Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo, Namhyung Kim, Linus Torvalds
From: "Liam R. Howlett" <redacted> Signed-off-by: Liam R. Howlett <redacted> --- kernel/events/core.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 1cb1f9b8392e..3ac0918d8e32 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c@@ -10161,14 +10161,17 @@ static void perf_addr_filter_apply(struct perf_addr_filter *filter, struct perf_addr_filter_range *fr) { struct vm_area_struct *vma; + MA_STATE(mas, &mm->mm_mt, 0, 0); - for (vma = mm->mmap; vma; vma = vma->vm_next) { + rcu_read_lock(); + mas_for_each(&mas, vma, ULONG_MAX) { if (!vma->vm_file) continue; if (perf_addr_filter_vma_adjust(filter, vma, fr)) - return; + break; } + rcu_read_unlock(); } /*
--
2.30.2