From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Antti Laakso <antti.laakso@intel.com>,
Artem Bityutskiy <artem.bityutskiy@linux.intel.com>,
Len Brown <len.brown@intel.com>, Sasha Levin <sashal@kernel.org>,
lenb@kernel.org, linux-pm@vger.kernel.org
Subject: [PATCH AUTOSEL 6.2 44/45] tools/power turbostat: fix decoding of HWP_STATUS
Date: Wed, 22 Mar 2023 15:56:38 -0400 [thread overview]
Message-ID: <20230322195639.1995821-44-sashal@kernel.org> (raw)
In-Reply-To: <20230322195639.1995821-1-sashal@kernel.org>
From: Antti Laakso <antti.laakso@intel.com>
[ 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@intel.com>
Reviewed-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
tools/power/x86/turbostat/turbostat.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index c24054e3ef7ad..c61c6c704fbe6 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -4426,7 +4426,7 @@ 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;
}
--
2.39.2
prev parent reply other threads:[~2023-03-22 20:03 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20230322195639.1995821-1-sashal@kernel.org>
2023-03-22 19:56 ` [PATCH AUTOSEL 6.2 43/45] tools/power turbostat: Fix /dev/cpu_dma_latency warnings Sasha Levin
2023-03-22 19:56 ` Sasha Levin [this message]
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