diff options
| author | Thomas Renninger <trenn@suse.de> | 2011-07-21 11:54:54 +0200 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2011-07-29 19:37:27 +0200 |
| commit | 029e9f73667f9b4661ac9886f706d75d26850260 (patch) | |
| tree | 4dd812e1de53d07695ce9b889482b032471a6889 /tools/power/cpupower/utils/helpers/misc.c | |
| parent | 8fb2e440b223b966f74a04a48f6f71f288fa671b (diff) | |
cpupower: Do detect IDA (opportunistic processor performance) via cpuid
IA32-Intel Devel guide Volume 3A - 14.3.2.1
-------------------------------------------
...
Opportunistic processor performance operation can be disabled by setting bit 38 of
IA32_MISC_ENABLES. This mechanism is intended for BIOS only. If
IA32_MISC_ENABLES[38] is set, CPUID.06H:EAX[1] will return 0.
Better detect things via cpuid, this cleans up the code a bit
and the MSR parts were not working correctly anyway.
Signed-off-by: Thomas Renninger <trenn@suse.de>
CC: lenb@kernel.org
CC: linux@dominikbrodowski.net
CC: cpufreq@vger.kernel.org
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'tools/power/cpupower/utils/helpers/misc.c')
| -rw-r--r-- | tools/power/cpupower/utils/helpers/misc.c | 12 |
1 files changed, 2 insertions, 10 deletions
diff --git a/tools/power/cpupower/utils/helpers/misc.c b/tools/power/cpupower/utils/helpers/misc.c index e8b3140cc6b..1609243f5c6 100644 --- a/tools/power/cpupower/utils/helpers/misc.c +++ b/tools/power/cpupower/utils/helpers/misc.c @@ -20,16 +20,8 @@ int cpufreq_has_boost_support(unsigned int cpu, int *support, int *active, if (ret <= 0) return ret; *support = 1; - } else if (cpupower_cpu_info.vendor == X86_VENDOR_INTEL) { - ret = msr_intel_has_boost_support(cpu); - if (ret <= 0) - return ret; - *support = ret; - ret = msr_intel_boost_is_active(cpu); - if (ret <= 0) - return ret; - *active = ret; - } + } else if (cpupower_cpu_info.caps & CPUPOWER_CAP_INTEL_IDA) + *support = *active = 1; return 0; } #endif /* #if defined(__i386__) || defined(__x86_64__) */ |