From: Vincent Donnefort <vdonnefort@google.com>
To: rostedt@goodmis.org, mhiramat@kernel.org,
linux-trace-kernel@vger.kernel.org
Cc: mathieu.desnoyers@efficios.com, kernel-team@android.com,
linux-kernel@vger.kernel.org,
Vincent Donnefort <vdonnefort@google.com>
Subject: [PATCH 4/6] ring-buffer: Remove trace_buffer::cpus
Date: Mon, 10 Aug 2026 13:56:31 +0100 [thread overview]
Message-ID: <20260810125633.3344684-5-vdonnefort@google.com> (raw)
In-Reply-To: <20260810125633.3344684-1-vdonnefort@google.com>
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 <vdonnefort@google.com>
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index ac5f5d9502dd..d128bda5b661 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -566,7 +566,6 @@ struct ring_buffer_per_cpu {
struct trace_buffer {
unsigned flags;
- int cpus;
atomic_t record_disabled;
atomic_t resizing;
cpumask_var_t cpumask;
@@ -2762,7 +2761,6 @@ 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()),
--
2.55.0.654.g21b8a5bc05-goog
next prev parent reply other threads:[~2026-08-10 12:57 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-10 12:56 [PATCH 0/6] ring-buffer: Fixes for subbuf resizing and persistent buffers Vincent Donnefort
2026-08-10 12:56 ` [PATCH 1/6] ring-buffer: Fix subbuf resize concurrency Vincent Donnefort
2026-08-10 12:56 ` [PATCH 2/6] ring-buffer: Dynamically calculate max_data_size Vincent Donnefort
2026-08-10 12:56 ` [PATCH 3/6] ring-buffer: Free cpu_buffer->free_page with subbuf_order Vincent Donnefort
2026-08-10 12:56 ` Vincent Donnefort [this message]
2026-08-10 12:56 ` [PATCH 5/6] ring-buffer: Remove ring_buffer_per_cpu::mapped Vincent Donnefort
2026-08-10 12:56 ` [PATCH 6/6] ring-buffer: Make nr_pages unsigned int Vincent Donnefort
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