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From: Len Brown <lenb@kernel.org>
To: linux-pm@vger.kernel.org
Cc: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com>,
	Len Brown <len.brown@intel.com>
Subject: [PATCH 07/26] tools/power turbostat: Read base_hz and bclk from CPUID.16H if available
Date: Mon,  8 Apr 2024 20:31:01 -0400	[thread overview]
Message-ID: <538d505fde20393bce1e6fb95cec82b56cdd22ef.1712621427.git.len.brown@intel.com> (raw)
In-Reply-To: <e5f4e68eed85fa8495d78cd966eecc2b27bb9e53.1712621427.git.len.brown@intel.com>

From: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com>

If MSRs cannot be read, values can be obtained from cpuid.

Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
---
 tools/power/x86/turbostat/turbostat.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index a4a40a6e1b95..c35c48b6a99a 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -5848,6 +5848,15 @@ void process_cpuid()
 		base_mhz = max_mhz = bus_mhz = edx = 0;
 
 		__cpuid(0x16, base_mhz, max_mhz, bus_mhz, edx);
+
+		bclk = bus_mhz;
+
+		base_hz = base_mhz * 1000000;
+		has_base_hz = 1;
+
+		if (platform->enable_tsc_tweak)
+			tsc_tweak = base_hz / tsc_hz;
+
 		if (!quiet)
 			fprintf(outf, "CPUID(0x16): base_mhz: %d max_mhz: %d bus_mhz: %d\n",
 				base_mhz, max_mhz, bus_mhz);
-- 
2.40.1


  parent reply	other threads:[~2024-04-09  0:31 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-04-09  0:30 turbostat 2024.04.08 queued for upstream Len Brown
2024-04-09  0:30 ` [PATCH 01/26] tools/power turbostat: Fix added raw MSR output Len Brown
2024-04-09  0:30   ` [PATCH 02/26] tools/power turbostat: Increase the limit for fd opened Len Brown
2024-04-09  0:30   ` [PATCH 03/26] tools/power turbostat: Fix Bzy_MHz documentation typo Len Brown
2024-04-09  0:30   ` [PATCH 04/26] tools/power turbostat: Do not print negative LPI residency Len Brown
2024-04-09  0:30   ` [PATCH 05/26] tools/power turbostat: Expand probe_intel_uncore_frequency() Len Brown
2024-04-09  0:31   ` [PATCH 06/26] tools/power turbostat: Print ucode revision only if valid Len Brown
2024-04-09  0:31   ` Len Brown [this message]
2024-04-09  0:31   ` [PATCH 08/26] tools/power turbostat: Fix warning upon failed /dev/cpu_dma_latency read Len Brown
2024-04-09  0:31   ` [PATCH 09/26] tools/power turbostat: enhance -D (debug counter dump) output Len Brown
2024-04-09  0:31   ` [PATCH 10/26] tools/power turbostat: Add --no-msr option Len Brown
2024-04-09  0:31   ` [PATCH 11/26] tools/power turbostat: Add --no-perf option Len Brown
2024-04-09  0:31   ` [PATCH 12/26] tools/power turbostat: Add reading aperf and mperf via perf API Len Brown
2024-04-09  0:31   ` [PATCH 13/26] tools/power turbostat: detect and disable unavailable BICs at runtime Len Brown
2024-04-09  0:31   ` [PATCH 14/26] tools/power turbostat: add early exits for permission checks Len Brown
2024-04-09  0:31   ` [PATCH 15/26] tools/power turbostat: Clear added counters when in no-msr mode Len Brown
2024-04-09  0:31   ` [PATCH 16/26] tools/power turbostat: Add proper re-initialization for perf file descriptors Len Brown
2024-04-09  0:31   ` [PATCH 17/26] tools/power turbostat: read RAPL counters via perf Len Brown
2024-04-09  0:31   ` [PATCH 18/26] tools/power turbostat: Add selftests Len Brown
2024-04-09  0:31   ` [PATCH 19/26] tools/power/turbostat: Enable MSR_CORE_C1_RES support for ICX Len Brown
2024-04-09  0:31   ` [PATCH 20/26] tools/power/turbostat: Cache graphics sysfs path Len Brown
2024-04-09  0:31   ` [PATCH 21/26] tools/power/turbostat: Unify graphics sysfs snapshots Len Brown
2024-04-09 15:40 ` turbostat 2024.04.08 queued for upstream Doug Smythies
2024-04-10  0:26   ` Len Brown

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