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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-14 17:41:38 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-14 17:41:38 -0800 |
| commit | 76d4acf22b4847f6c7b2f9042366fbdc3d20f578 (patch) | |
| tree | 635466360e3716372dd91ad8c724b40d15c05753 /kernel/fork.c | |
| parent | 8a8ca83ec3cf7ffc69020c189e3d368b1d4ba98a (diff) | |
| parent | a70a04b3844f59c29573a8581d5c263225060dd6 (diff) | |
| download | linux-76d4acf22b4847f6c7b2f9042366fbdc3d20f578.tar.gz linux-76d4acf22b4847f6c7b2f9042366fbdc3d20f578.tar.xz | |
Merge tag 'perf-kprobes-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf/kprobes updates from Thomas Gleixner:
"Make kretprobes lockless to avoid the rp->lock performance and
potential lock ordering issues"
* tag 'perf-kprobes-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/atomics: Regenerate the atomics-check SHA1's
kprobes: Replace rp->free_instance with freelist
freelist: Implement lockless freelist
asm-generic/atomic: Add try_cmpxchg() fallbacks
kprobes: Remove kretprobe hash
llist: Add nonatomic __llist_add() and __llist_dell_all()
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 09be1be28cde..1513832de220 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -2183,6 +2183,10 @@ static __latent_entropy struct task_struct *copy_process( INIT_LIST_HEAD(&p->thread_group); p->task_works = NULL; +#ifdef CONFIG_KRETPROBES + p->kretprobe_instances.first = NULL; +#endif + /* * Ensure that the cgroup subsystem policies allow the new process to be * forked. It should be noted that the new process's css_set can be changed |