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authorMarco Elver <elver@google.com>2021-11-05 23:45:25 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-11-06 23:30:43 +0300
commitf39f21b3ddc7fc0f87eb6dc75ddc81b5bbfb7672 (patch)
tree568ec7209edb5c0677254c64fb5795422944dd0c /include/linux/stacktrace.h
parenta1554c002699cbc9ced2e9f44f9c1357181bead3 (diff)
downloadlinux-f39f21b3ddc7fc0f87eb6dc75ddc81b5bbfb7672.tar.xz
stacktrace: move filter_irq_stacks() to kernel/stacktrace.c
filter_irq_stacks() has little to do with the stackdepot implementation, except that it is usually used by users (such as KASAN) of stackdepot to reduce the stack trace. However, filter_irq_stacks() itself is not useful without a stack trace as obtained by stack_trace_save() and friends. Therefore, move filter_irq_stacks() to kernel/stacktrace.c, so that new users of filter_irq_stacks() do not have to start depending on STACKDEPOT only for filter_irq_stacks(). Link: https://lkml.kernel.org/r/20210923104803.2620285-1-elver@google.com Signed-off-by: Marco Elver <elver@google.com> Acked-by: Dmitry Vyukov <dvyukov@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Jann Horn <jannh@google.com> Cc: Aleksandr Nogikh <nogikh@google.com> Cc: Taras Madan <tarasmadan@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/stacktrace.h')
-rw-r--r--include/linux/stacktrace.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/stacktrace.h b/include/linux/stacktrace.h
index 9edecb494e9e..bef158815e83 100644
--- a/include/linux/stacktrace.h
+++ b/include/linux/stacktrace.h
@@ -21,6 +21,7 @@ unsigned int stack_trace_save_tsk(struct task_struct *task,
unsigned int stack_trace_save_regs(struct pt_regs *regs, unsigned long *store,
unsigned int size, unsigned int skipnr);
unsigned int stack_trace_save_user(unsigned long *store, unsigned int size);
+unsigned int filter_irq_stacks(unsigned long *entries, unsigned int nr_entries);
/* Internal interfaces. Do not use in generic code */
#ifdef CONFIG_ARCH_STACKWALK