diff mbox series

[07/26] tools/power turbostat: Read base_hz and bclk from CPUID.16H if available

Message ID 538d505fde20393bce1e6fb95cec82b56cdd22ef.1712621427.git.len.brown@intel.com (mailing list archive)
State Accepted, archived
Delegated to: Len Brown
Headers show
Series [01/26] tools/power turbostat: Fix added raw MSR output | expand

Commit Message

Len Brown April 9, 2024, 12:31 a.m. UTC 
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 mbox series

Patch

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);