Messages in this thread | | | Date | Wed, 21 Dec 2005 05:21:01 +0100 | From | Voluspa <> | Subject | Re: Linux 2.6.15-rc6 |
| |
I know that C1 isn't much of a power save, but that's what my amd64 notebook provides, and it get used in 2.6.14:
loke@sleipner:~$ cat /proc/acpi/processor/CPU0/power active state: C1 max_cstate: C8 bus master activity: 00000000 states: *C1: type[C1] promotion[--] demotion[--] latency[000] usage[01399981]
Not so in 2.6.15-rc2 to -rc6 (report http://marc.theaimsgroup.com/?l=linux-kernel&m=113498252000221&w=2 ) Culprit is the following commit that I humbly ask to be removed/rewritten:
root@sleipner:/home/git/linux-2.6# git bisect bad 2203d6ed448ff3b777ee6bb614a53e686b483e5b is first bad commit diff-tree 2203d6ed448ff3b777ee6bb614a53e686b483e5b (from 2656c076e31a3ce3ab2a987a578e7122dc2af51d) Author: Linus Torvalds <torvalds@g5.osdl.org> Date: Fri Nov 18 07:29:51 2005 -0800
Fix ACPI processor power block initialization
Properly clear the memory, and set "pr->flags.power" only if a C2 or deeper state is valid (to make the code match both the comment and previous behaviour).
This fixes a boot-time lockup reported by Maneesh Soni when using "maxcpus=1".
Acked-by: Maneesh Soni <maneesh@in.ibm.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
:040000 040000 52be621b960ae192b36acf778c966d78ff5edbe2 04c183ce141dab8cdff049c1dae379104b637ed4 M drivers
Mvh Mats Johannesson -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |