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| 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 /lib/iomap_copy.c | |
| parent | 8fb2e440b223b966f74a04a48f6f71f288fa671b (diff) | |
| download | linux-029e9f73667f9b4661ac9886f706d75d26850260.tar.gz linux-029e9f73667f9b4661ac9886f706d75d26850260.tar.bz2 linux-029e9f73667f9b4661ac9886f706d75d26850260.zip | |
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 'lib/iomap_copy.c')
0 files changed, 0 insertions, 0 deletions