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authorSteven Rostedt <rostedt@goodmis.org>2008-10-31 09:58:35 -0400
committerIngo Molnar <mingo@elte.hu>2008-11-03 05:10:04 -0500
commit818e3dd30a4ff34fff6d90e87ae59c73f6a53691 (patch)
treeab9db9dec53a0c0383476c8dfca17d75c83317f6 /drivers/acpi
parentb3aa557722b3d5858f14ca559e03461c24125aaf (diff)
tracing, ring-buffer: add paranoid checks for loops
While writing a new tracer, I had a bug where I caused the ring-buffer to recurse in a bad way. The bug was with the tracer I was writing and not the ring-buffer itself. But it took a long time to find the problem. This patch adds paranoid checks into the ring-buffer infrastructure that will catch bugs of this nature. Note: I put the bug back in the tracer and this patch showed the error nicely and prevented the lockup. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/acpi')
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