diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2020-08-29 16:03:56 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-10-12 19:27:28 +0300 |
| commit | 6e426e0fcd20ce144bb93e00b70df51e9f2e08c3 (patch) | |
| tree | f4e6ad94a04db211bfacc7cc6a931a96ecd897fd /include/linux/kprobes.h | |
| parent | e563604a5f5a891283b6a8db4001cee833a7c6b8 (diff) | |
| download | linux-6e426e0fcd20ce144bb93e00b70df51e9f2e08c3.tar.xz | |
kprobes: Replace rp->free_instance with freelist
Gets rid of rp->lock, and as a result kretprobes are now fully
lockless.
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/159870623583.1229682.17472357584134058687.stgit@devnote2
Diffstat (limited to 'include/linux/kprobes.h')
| -rw-r--r-- | include/linux/kprobes.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h index 00cf4421efd5..b7824e3f1ef5 100644 --- a/include/linux/kprobes.h +++ b/include/linux/kprobes.h @@ -28,6 +28,7 @@ #include <linux/mutex.h> #include <linux/ftrace.h> #include <linux/refcount.h> +#include <linux/freelist.h> #include <asm/kprobes.h> #ifdef CONFIG_KPROBES @@ -157,17 +158,16 @@ struct kretprobe { int maxactive; int nmissed; size_t data_size; - struct hlist_head free_instances; + struct freelist_head freelist; struct kretprobe_holder *rph; - raw_spinlock_t lock; }; struct kretprobe_instance { union { - struct llist_node llist; - struct hlist_node hlist; + struct freelist_node freelist; struct rcu_head rcu; }; + struct llist_node llist; struct kretprobe_holder *rph; kprobe_opcode_t *ret_addr; void *fp; |