The patch titled
Subject: perf/core: use vma_is_stack() and vma_is_heap()
has been added to the -mm mm-unstable branch. Its filename is
perf-core-use-vma_is_stack-and-vma_is_heap.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/perf-core-use-vma_is_stack-and-vma_is_heap.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Subject: perf/core: use vma_is_stack() and vma_is_heap()
Date: Wed, 12 Jul 2023 22:38:31 +0800
Use the helpers to simplify code, also kill unneeded goto cpy_name.
Link: https://lkml.kernel.org/r/20230712143831.120701-6-wangkefeng.wang@xxxxxxxxxx
Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/events/core.c | 22 +++++++---------------
1 file changed, 7 insertions(+), 15 deletions(-)
--- a/kernel/events/core.c~perf-core-use-vma_is_stack-and-vma_is_heap
+++ a/kernel/events/core.c
@@ -8685,22 +8685,14 @@ static void perf_event_mmap_event(struct
}
name = (char *)arch_vma_name(vma);
- if (name)
- goto cpy_name;
-
- if (vma->vm_start <= vma->vm_mm->start_brk &&
- vma->vm_end >= vma->vm_mm->brk) {
- name = "[heap]";
- goto cpy_name;
- }
- if (vma->vm_start <= vma->vm_mm->start_stack &&
- vma->vm_end >= vma->vm_mm->start_stack) {
- name = "[stack]";
- goto cpy_name;
+ if (!name) {
+ if (vma_is_heap(vma))
+ name = "[heap]";
+ else if (vma_is_stack(vma))
+ name = "[stack]";
+ else
+ name = "//anon";
}
-
- name = "//anon";
- goto cpy_name;
}
cpy_name:
_
Patches currently in -mm which might be from wangkefeng.wang@xxxxxxxxxx are
mm-remove-arguments-of-show_mem.patch
mm-make-show_free_areas-static.patch
mm-introduce-vma_is_stack-and-vma_is_heap.patch
mm-use-vma_is_stack-and-vma_is_heap.patch
drm-amdkfd-use-vma_is_stack-and-vma_is_heap.patch
selinux-use-vma_is_stack-and-vma_is_heap.patch
perf-core-use-vma_is_stack-and-vma_is_heap.patch
