github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-07-28 01:55:51 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

rv: Ensure all pending probes terminate on per-obj monitor destroy

Browse Source 
The monitor disable/destroy sequence detaches all probes and resets the
monitor's data, however it doesn't wait for pending probes. This is an
issue with per-object monitors, which free the monitor storage.

Call tracepoint_synchronize_unregister() to make sure to wait for all
pending probes before destroying the monitor storage.

Fixes: 4a24127bd6 ("rv: Add support for per-object monitors in DA/HA")
Reviewed-by: Wen Yang <wen.yang@linux.dev>
Reviewed-by: Nam Cao <namcao@linutronix.de>
Link: https://lore.kernel.org/r/20260601153840.124372-5-gmonaco@redhat.com
Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>
This commit is contained in:
Gabriele Monaco 2026-06-01 17:38:31 +02:00
parent c3d016ea82
commit 32171d828a
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
include/rv/da_monitor.h
View File

@ -511,9 +511,10 @@ static inline void da_monitor_destroy(void)
struct hlist_node *tmp;
int bkt;
tracepoint_synchronize_unregister();
/*
* This function is called after all probes are disabled, we need only
* worry about concurrency against old events.
* This function is called after all probes are disabled and no longer
* pending, we can safely assume no concurrent user.
*/
synchronize_rcu();
hash_for_each_safe(da_monitor_ht, bkt, tmp, mon_storage, node) {