mirrors/linux
2
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-07-22 02:17:36 -04:00
Code Issues Packages Projects Releases Wiki Activity

ring-buffer: Allow sparse CPU masks in ring_buffer_desc()

Browse Source 
No user currently relies on sparse CPU masks, but the descriptor logic already
supports them via linear fallback. Remove the arbitrary limitation.

Link: https://patch.msgid.link/20260709160017.1729517-4-vdonnefort@google.com
Fixes: 2e67fabd8b ("ring-buffer: Introduce ring-buffer remotes")
Reported-by: Sashiko <sashiko-bot@kernel.org>
Signed-off-by: Vincent Donnefort <vdonnefort@google.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Vincent Donnefort
2026-07-09 17:00:17 +01:00
committed by Steven Rostedt
parent d471d4f86e
commit 601ddaceb8
1 changed files with 1 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
kernel/trace/ring_buffer.c
View File

@@ -2330,10 +2330,7 @@ static struct ring_buffer_desc *ring_buffer_desc(struct trace_buffer_desc *trace
size_t len;
int i;
if (!trace_desc)
return NULL;
if (cpu >= trace_desc->nr_cpus)
if (!trace_desc || !trace_desc->nr_cpus)
return NULL;
end = (struct ring_buffer_desc *)((void *)trace_desc + trace_desc->struct_len);