ring-buffer: fix deadlock from reader_lock in read_start

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Impact: deadlock fix in ring_buffer_read_start

The ring_buffer_iter_reset was called from ring_buffer_read_start
where both grabbed the reader_lock.

This patch separates out the internals of ring_buffer_iter_reset
to its own function so that both APIs may grab the reader_lock.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Steven Rostedt 2008-11-12 00:01:26 -05:00 • committed by Ingo Molnar

parent d06bbd6695

commit 642edba5f5

1 changed files with 17 additions and 12 deletions

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kernel/trace/ring_buffer.c

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