[PATCH v4 7/9] ring-buffer: Remove trace_buffer::cpus
From: Vincent Donnefort <hidden>
Date: 2026-08-12 15:33:38
Also in:
lkml
Subsystem:
the rest, tracing · Maintainers:
Linus Torvalds, Steven Rostedt, Masami Hiramatsu
The 'cpus' field in struct trace_buffer became useless in commit
8e7b58c27b3c ("ring-buffer: Just update the subbuffers when changing their
allocation order"). Remove it
Fixes: 8e7b58c27b3c ("ring-buffer: Just update the subbuffers when changing their allocation order")
Signed-off-by: Vincent Donnefort <redacted>
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 64bf4ac853f5..45aa10f0b17e 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c@@ -572,7 +572,6 @@ struct ring_buffer_per_cpu { struct trace_buffer { unsigned flags; - int cpus; atomic_t record_disabled; atomic_t resizing; cpumask_var_t cpumask;
@@ -2796,7 +2795,6 @@ static struct trace_buffer *alloc_buffer(unsigned long size, unsigned flags, init_irq_work(&buffer->irq_work.work, rb_wake_up_waiters); init_waitqueue_head(&buffer->irq_work.waiters); - buffer->cpus = nr_cpu_ids; bsize = sizeof(void *) * nr_cpu_ids; buffer->buffers = kzalloc(ALIGN(bsize, cache_line_size()),
--
2.55.0.691.gc56d675ccc-goog