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| author | Paul E. McKenney <paulmck@linux.ibm.com> | 2018-11-07 04:04:39 +0100 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.ibm.com> | 2018-11-27 18:21:42 +0100 |
| commit | ae8b7ce7647bc5c56a9a9fc32b03e1cd0ae49629 (patch) | |
| tree | 1074d09e7b77d4b12bedf920a6ce624382a1cb79 /kernel | |
| parent | main: Replace rcu_barrier_sched() with rcu_barrier() (diff) | |
| download | linux-ae8b7ce7647bc5c56a9a9fc32b03e1cd0ae49629.tar.xz linux-ae8b7ce7647bc5c56a9a9fc32b03e1cd0ae49629.zip | |
kprobes: Replace synchronize_sched() with synchronize_rcu()
Now that synchronize_rcu() waits for preempt-disable regions of code
as well as RCU read-side critical sections, synchronize_sched() can be
replaced by synchronize_rcu(). This commit therefore makes this change.
Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
Cc: "Naveen N. Rao" <naveen.n.rao@linux.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/kprobes.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/kernel/kprobes.c b/kernel/kprobes.c index 90e98e233647..08e31d863191 100644 --- a/kernel/kprobes.c +++ b/kernel/kprobes.c @@ -229,7 +229,7 @@ static int collect_garbage_slots(struct kprobe_insn_cache *c) struct kprobe_insn_page *kip, *next; /* Ensure no-one is interrupted on the garbages */ - synchronize_sched(); + synchronize_rcu(); list_for_each_entry_safe(kip, next, &c->pages, list) { int i; @@ -1382,7 +1382,7 @@ out: if (ret) { ap->flags |= KPROBE_FLAG_DISABLED; list_del_rcu(&p->list); - synchronize_sched(); + synchronize_rcu(); } } } @@ -1597,7 +1597,7 @@ int register_kprobe(struct kprobe *p) ret = arm_kprobe(p); if (ret) { hlist_del_rcu(&p->hlist); - synchronize_sched(); + synchronize_rcu(); goto out; } } @@ -1776,7 +1776,7 @@ void unregister_kprobes(struct kprobe **kps, int num) kps[i]->addr = NULL; mutex_unlock(&kprobe_mutex); - synchronize_sched(); + synchronize_rcu(); for (i = 0; i < num; i++) if (kps[i]->addr) __unregister_kprobe_bottom(kps[i]); @@ -1966,7 +1966,7 @@ void unregister_kretprobes(struct kretprobe **rps, int num) rps[i]->kp.addr = NULL; mutex_unlock(&kprobe_mutex); - synchronize_sched(); + synchronize_rcu(); for (i = 0; i < num; i++) { if (rps[i]->kp.addr) { __unregister_kprobe_bottom(&rps[i]->kp); |