| Message ID | tencent_3E06CE338692017B5809534B9C5C03DA7705@qq.com (mailing list archive) |
|---|---|
| State | Queued |
| Headers | show |
| Series | ftrace: add cond resched to ftrace_graph_set_hash | expand |
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 92015de6203d..1a48aedb5255 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -6855,6 +6855,7 @@ ftrace_graph_set_hash(struct ftrace_hash *hash, char *buffer) } } } + cond_resched(); } while_for_each_ftrace_rec(); return fail ? -EINVAL : 0;
When the kernel contains a large number of symbos,loop in ftrace_graph_set_hash function may take a lot of time to execute.This may trigger softlockup watchdog. Add cond _resched within loop. This ensures the kernel remains responsive even when processing a large number of symbols. Signed-off-by: zhoumin <teczm@foxmail.com> --- kernel/trace/ftrace.c | 1 + 1 file changed, 1 insertion(+)