linux-kernel - [PATCH AUTOSEL 5.15 15/16] tools/power turbostat: fix decoding of HWP

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Message-Id: <20230322200121.1997157-15-sashal@kernel.org>
Date:   Wed, 22 Mar 2023 16:01:19 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Antti Laakso <antti.laakso@...el.com>,
        Artem Bityutskiy <artem.bityutskiy@...ux.intel.com>,
        Len Brown <len.brown@...el.com>,
        Sasha Levin <sashal@...nel.org>, lenb@...nel.org,
        linux-pm@...r.kernel.org
Subject: [PATCH AUTOSEL 5.15 15/16] tools/power turbostat: fix decoding of HWP_STATUS

From: Antti Laakso <antti.laakso@...el.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@...el.com>
Reviewed-by: Artem Bityutskiy <artem.bityutskiy@...ux.intel.com>
Signed-off-by: Len Brown <len.brown@...el.com>
Signed-off-by: Sasha Levin <sashal@...nel.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 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;
 }
-- 
2.39.2