| commit | ee4ed6fa5af0009a1205498d1f754fecc7af7657 | [log] [tgz] |
|---|---|---|
| author | Michael Neuling <mikey@neuling.org> | Fri Mar 14 17:03:58 2014 +1100 |
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | Mon Mar 24 09:48:34 2014 +1100 |
| tree | 5eaa6e13a2d83e39bb66fe74585328dd7edd02c4 | |
| parent | e9aaac1ac39f58a897e9b71e153317c8c216cb21 [diff] |
powerpc: Rate-limit users spamming kernel log buffer The facility unavailable exception can be triggered from userspace by accessing PMU registers when EBB is not enabled. This causes the included pr_err() to run, hence spamming the kernel log buffer. This avoids this by rate limiting these messages. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>