This is a note to let you know that I've just added the patch titled
tools/power turbostat: fix decoding of HWP_STATUS
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
tools-power-turbostat-fix-decoding-of-hwp_status.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit e1f7dcb17bbf47e098679e26fe071d88ef399382
Author: Antti Laakso <antti.laakso@xxxxxxxxx>
Date: Wed Jan 25 15:17:50 2023 +0200
tools/power turbostat: fix decoding of HWP_STATUS
[ Upstream commit 92c25393586ac799b9b7d9e50434f3c44a7622c4 ]
The "excursion to minimum" information is in bit2
in HWP_STATUS MSR. Fix the bitmask used for
decoding the register.
Signed-off-by: Antti Laakso <antti.laakso@xxxxxxxxx>
Reviewed-by: Artem Bityutskiy <artem.bityutskiy@xxxxxxxxxxxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index 84b8a35c91972..a3197efe52c63 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -4241,7 +4241,7 @@ int print_hwp(struct thread_data *t, struct core_data *c, struct pkg_data *p)
fprintf(outf, "cpu%d: MSR_HWP_STATUS: 0x%08llx "
"(%sGuaranteed_Perf_Change, %sExcursion_Min)\n",
- cpu, msr, ((msr) & 0x1) ? "" : "No-", ((msr) & 0x2) ? "" : "No-");
+ cpu, msr, ((msr) & 0x1) ? "" : "No-", ((msr) & 0x4) ? "" : "No-");
return 0;
}
