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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-10-14 08:03:44 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-10-14 08:03:44 +0200 |
| commit | 64f3b5a6bc49adf77d58eddd72a4bfccd492fa24 (patch) | |
| tree | cdd6aa7a0d21482ae4d1e76d837f3712c8c6481d /kernel/trace/ring_buffer.c | |
| parent | USB: chaoskey: Fix possible deadlock chaoskey_list_lock (diff) | |
| parent | Linux 6.12-rc3 (diff) | |
| download | linux-64f3b5a6bc49adf77d58eddd72a4bfccd492fa24.tar.gz linux-64f3b5a6bc49adf77d58eddd72a4bfccd492fa24.zip | |
Merge 6.12-rc3 into usb-next
We need the USB fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/trace/ring_buffer.c')
| -rw-r--r-- | kernel/trace/ring_buffer.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c index 77dc0b25140e..fb04445f92c3 100644 --- a/kernel/trace/ring_buffer.c +++ b/kernel/trace/ring_buffer.c @@ -2337,9 +2337,12 @@ static struct trace_buffer *alloc_buffer(unsigned long size, unsigned flags, if (!buffer->buffers[cpu]) goto fail_free_buffers; - ret = cpuhp_state_add_instance(CPUHP_TRACE_RB_PREPARE, &buffer->node); - if (ret < 0) - goto fail_free_buffers; + /* If already mapped, do not hook to CPU hotplug */ + if (!start) { + ret = cpuhp_state_add_instance(CPUHP_TRACE_RB_PREPARE, &buffer->node); + if (ret < 0) + goto fail_free_buffers; + } mutex_init(&buffer->mutex); |