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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-15 04:41:38 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-15 04:41:38 +0300 |
| commit | 76d4acf22b4847f6c7b2f9042366fbdc3d20f578 (patch) | |
| tree | 635466360e3716372dd91ad8c724b40d15c05753 /kernel/trace | |
| parent | 8a8ca83ec3cf7ffc69020c189e3d368b1d4ba98a (diff) | |
| parent | a70a04b3844f59c29573a8581d5c263225060dd6 (diff) | |
| download | 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/trace')
| -rw-r--r-- | kernel/trace/trace_kprobe.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c index b911e9f6d9f5..97c7a7782db7 100644 --- a/kernel/trace/trace_kprobe.c +++ b/kernel/trace/trace_kprobe.c @@ -1731,7 +1731,8 @@ NOKPROBE_SYMBOL(kprobe_dispatcher); static int kretprobe_dispatcher(struct kretprobe_instance *ri, struct pt_regs *regs) { - struct trace_kprobe *tk = container_of(ri->rp, struct trace_kprobe, rp); + struct kretprobe *rp = get_kretprobe(ri); + struct trace_kprobe *tk = container_of(rp, struct trace_kprobe, rp); raw_cpu_inc(*tk->nhit); |