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| author | Peter Zijlstra <peterz@infradead.org> | 2020-08-29 22:03:24 +0900 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-10-12 18:27:27 +0200 |
| commit | d741bf41d7c7db4898bacfcb020353cddc032fd8 (patch) | |
| tree | 9944b2c314717793ebd6be0982dab4bd4f82b2a1 /kernel/fork.c | |
| parent | 476c5818c37a7828d558f34ae01f0c32f8bfadde (diff) | |
| download | linux-d741bf41d7c7db4898bacfcb020353cddc032fd8.tar.bz2 | |
kprobes: Remove kretprobe hash
The kretprobe hash is mostly superfluous, replace it with a per-task
variable.
This gets rid of the task hash and it's related locking.
Note that this may change the kprobes module-exported API for kretprobe
handlers. If any out-of-tree kretprobe user uses ri->rp, use
get_kretprobe(ri) instead.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/159870620431.1229682.16325792502413731312.stgit@devnote2
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 49677d668de4..53a1f508a097 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -2161,6 +2161,10 @@ 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 the the new process's css_set can be changed |