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authorChakravarty, Souvik K <[email protected]>2017-11-24 19:04:42 +0530
committerAndy Shevchenko <[email protected]>2017-11-27 13:39:11 +0200
commit0946a05fd220a24e7f3843011ef696578d02aa29 (patch)
tree9d96141b033173648ce05e8d433cc17ffcd30235 /tools/perf/scripts/python/stackcollapse.py
parent9c916549c0345a054431abdc4f2d9ba48e856f80 (diff)
platform/x86: intel_telemetry: Fix suspend stats
Suspend stats are not reported consistently due to a limitation in the PMC firmware. This limitation causes a delay in updating the s0ix counters and residencies in the telemetry log upon s0ix exit. As a consequence, reading these counters from the suspend-exit notifier may result in zero read. This patch fixes this issue by cross-verifying the s0ix residencies from the GCR TELEM registers in case the counters are not incremented in the telemetry log after suspend. This fixes https://bugzilla.kernel.org/show_bug.cgi?id=197833 Reported-and-tested-by: Rajneesh Bhardwaj <[email protected]> Signed-off-by: Souvik Kumar Chakravarty <[email protected]> Signed-off-by: Andy Shevchenko <[email protected]>
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