linux-kernel - [PATCH 3/4] tools/power turbostat: decode MSR_IA32_POWER

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <158ba54b081af78a85e7ec1ffff185959368b886.1359691799.git.len.brown@intel.com>
Date:	Thu, 31 Jan 2013 23:11:35 -0500
From:	Len Brown <lenb@...nel.org>
To:	linux-pm@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, Len Brown <len.brown@...el.com>
Subject: [PATCH 3/4] tools/power turbostat: decode MSR_IA32_POWER_CTL

From: Len Brown <len.brown@...el.com>

When verbose is enabled, print the C1E-Enable
bit in MSR_IA32_POWER_CTL.

also delete some redundant tests on the verbose variable.

Signed-off-by: Len Brown <len.brown@...el.com>
---
 arch/x86/include/uapi/asm/msr-index.h |  2 ++
 tools/power/x86/turbostat/turbostat.c | 13 +++++++------
 2 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/arch/x86/include/uapi/asm/msr-index.h b/arch/x86/include/uapi/asm/msr-index.h
index 433a59f..7bdaf7c 100644
--- a/arch/x86/include/uapi/asm/msr-index.h
+++ b/arch/x86/include/uapi/asm/msr-index.h
@@ -103,6 +103,8 @@
 #define DEBUGCTLMSR_BTS_OFF_USR		(1UL << 10)
 #define DEBUGCTLMSR_FREEZE_LBRS_ON_PMI	(1UL << 11)
 
+#define MSR_IA32_POWER_CTL		0x000001fc
+
 #define MSR_IA32_MC0_CTL		0x00000400
 #define MSR_IA32_MC0_STATUS		0x00000401
 #define MSR_IA32_MC0_ADDR		0x00000402
diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index b326878..75f64e0 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -908,8 +908,7 @@ void print_verbose_header(void)
 
 	get_msr(0, MSR_NHM_PLATFORM_INFO, &msr);
 
-	if (verbose)
-		fprintf(stderr, "cpu0: MSR_NHM_PLATFORM_INFO: 0x%08llx\n", msr);
+	fprintf(stderr, "cpu0: MSR_NHM_PLATFORM_INFO: 0x%08llx\n", msr);
 
 	ratio = (msr >> 40) & 0xFF;
 	fprintf(stderr, "%d * %.0f = %.0f MHz max efficiency\n",
@@ -919,13 +918,16 @@ void print_verbose_header(void)
 	fprintf(stderr, "%d * %.0f = %.0f MHz TSC frequency\n",
 		ratio, bclk, ratio * bclk);
 
+	get_msr(0, MSR_IA32_POWER_CTL, &msr);
+	fprintf(stderr, "cpu0: MSR_IA32_POWER_CTL: 0x%08llx (C1E: %sabled)\n",
+		msr, msr & 0x2 ? "EN" : "DIS");
+
 	if (!do_ivt_turbo_ratio_limit)
 		goto print_nhm_turbo_ratio_limits;
 
 	get_msr(0, MSR_IVT_TURBO_RATIO_LIMIT, &msr);
 
-	if (verbose)
-		fprintf(stderr, "cpu0: MSR_IVT_TURBO_RATIO_LIMIT: 0x%08llx\n", msr);
+	fprintf(stderr, "cpu0: MSR_IVT_TURBO_RATIO_LIMIT: 0x%08llx\n", msr);
 
 	ratio = (msr >> 56) & 0xFF;
 	if (ratio)
@@ -1016,8 +1018,7 @@ print_nhm_turbo_ratio_limits:
 
 	get_msr(0, MSR_NHM_TURBO_RATIO_LIMIT, &msr);
 
-	if (verbose)
-		fprintf(stderr, "cpu0: MSR_NHM_TURBO_RATIO_LIMIT: 0x%08llx\n", msr);
+	fprintf(stderr, "cpu0: MSR_NHM_TURBO_RATIO_LIMIT: 0x%08llx\n", msr);
 
 	ratio = (msr >> 56) & 0xFF;
 	if (ratio)
-- 
1.8.1.2.422.g08c0e7f

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/