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List:       git-commits-head
Subject:    tools/power turbostat: correctly decode of ENERGY_PERFORMANCE_BIAS
From:       "Linux Kernel Mailing List" <linux-kernel () vger ! kernel ! org>
Date:       2015-05-31 19:06:11
Message-ID: 20150531190611.994B0660EC6 () gitolite ! kernel ! org
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Gitweb:     http://git.kernel.org/linus/;a=commit;h=e9be7dd62899194ebdd90d417fc6c07d5d157912
Commit:     e9be7dd62899194ebdd90d417fc6c07d5d157912
Parent:     fb5d432722e186c656285ccc088e35dbe24f6fd1
Refname:    refs/heads/master
Author:     Len Brown <len.brown@intel.com>
AuthorDate: Tue May 26 12:19:37 2015 -0400
Committer:  Len Brown <len.brown@intel.com>
CommitDate: Wed May 27 18:04:00 2015 -0400

    tools/power turbostat: correctly decode of ENERGY_PERFORMANCE_BIAS
    
    When EPB is 0xF, turbosat was incorrectly describing it as "custom"
    instead of calling it "powersave":
    
    < cpu0: MSR_IA32_ENERGY_PERF_BIAS: 0x0000000f (custom)
    > cpu0: MSR_IA32_ENERGY_PERF_BIAS: 0x0000000f (powersave)
    
    Signed-off-by: Len Brown <len.brown@intel.com>
---
 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 256a5e1..f92211e 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -1919,7 +1919,7 @@ int print_epb(struct thread_data *t, struct core_data *c, struct pkg_data *p)
 	if (get_msr(cpu, MSR_IA32_ENERGY_PERF_BIAS, &msr))
 		return 0;
 
-	switch (msr & 0x7) {
+	switch (msr & 0xF) {
 	case ENERGY_PERF_BIAS_PERFORMANCE:
 		epb_string = "performance";
 		break;
--
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