Re: powerpc/perf: Fix thersholding counter data for unknown type
From: Michael Ellerman <hidden>
Date: 2018-12-22 10:08:47
On Sun, 2018-12-09 at 09:18:15 UTC, Madhavan Srinivasan wrote:
MMCRA[34:36] and MMCRA[38:44] expose the thresholding counter value.
Thresholding counter can be used to count latency cycles such as
load miss to reload. But threshold counter value is not relevant
when the sampled instruction type is unknown or reserved. Patch to
fix the thersholding counter value to zero when sampled instruction
type is unknown or reserved.
Fixes: 170a315f41c6('powerpc/perf: Support to export MMCRA[TEC*] field to userspace')
Signed-off-by: Madhavan Srinivasan <redacted>Applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/17cfccc91545682513541924245abb cheers