powerpc: Rate-limit users spamming kernel log buffer

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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>

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Michael Neuling 2014-03-14 17:03:58 +11:00 • committed by Benjamin Herrenschmidt

parent e9aaac1ac3

commit ee4ed6fa5a

1 changed files with 3 additions and 2 deletions

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arch/powerpc/kernel/traps.c

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