From: Jason Xing <kernelxing@xxxxxxxxxxx>
Use for_each_possible_cpu to create per-cpu relayfs file to avoid later
hotplug cpu which doesn't have its own file.
Reviewed-by: Yushan Zhou <katrinzhou@xxxxxxxxxxx>
Signed-off-by: Jason Xing <kernelxing@xxxxxxxxxxx>
---
kernel/relay.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/relay.c b/kernel/relay.c
index 27f7e701724f..dcb099859e83 100644
--- a/kernel/relay.c
+++ b/kernel/relay.c
@@ -519,7 +519,7 @@ struct rchan *relay_open(const char *base_filename,
kref_init(&chan->kref);
mutex_lock(&relay_channels_mutex);
- for_each_online_cpu(i) {
+ for_each_possible_cpu(i) {
buf = relay_open_buf(chan, i);
if (!buf)
goto free_bufs;
@@ -615,7 +615,7 @@ int relay_late_setup_files(struct rchan *chan,
* no files associated. So it's safe to call relay_setup_buf_file()
* on all currently online CPUs.
*/
- for_each_online_cpu(i) {
+ for_each_possible_cpu(i) {
buf = *per_cpu_ptr(chan->buf, i);
if (unlikely(!buf)) {
WARN_ONCE(1, KERN_ERR "CPU has no buffer!\n");
--
2.43.5
