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| author | jkim <jkim@FreeBSD.org> | 2011-07-14 21:00:26 +0000 |
|---|---|---|
| committer | jkim <jkim@FreeBSD.org> | 2011-07-14 21:00:26 +0000 |
| commit | 96d6cc9832b1e44e9d22ebafdc953a241c07c9d9 (patch) | |
| tree | 9a2f51e9df71efecc4be43c619d3287cabc1edf5 /sys/kern/kern_tc.c | |
| parent | aadbd5321a07ba56dde92245c908feb3e6e2cb94 (diff) | |
| download | FreeBSD-src-96d6cc9832b1e44e9d22ebafdc953a241c07c9d9.zip FreeBSD-src-96d6cc9832b1e44e9d22ebafdc953a241c07c9d9.tar.gz | |
If TSC stops ticking in C3, disable deep sleep when the user forcefully
select TSC as timecounter hardware.
Tested by: Fabian Keil (freebsd-listen at fabiankeil dot de)
Diffstat (limited to 'sys/kern/kern_tc.c')
| -rw-r--r-- | sys/kern/kern_tc.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sys/kern/kern_tc.c b/sys/kern/kern_tc.c index 39d6f23..0c52071 100644 --- a/sys/kern/kern_tc.c +++ b/sys/kern/kern_tc.c @@ -492,6 +492,12 @@ tc_windup(void) /* Now is a good time to change timecounters. */ if (th->th_counter != timecounter) { +#ifndef __arm__ + if ((timecounter->tc_flags & TC_FLAGS_C3STOP) != 0) + cpu_disable_deep_sleep++; + if ((th->th_counter->tc_flags & TC_FLAGS_C3STOP) != 0) + cpu_disable_deep_sleep--; +#endif th->th_counter = timecounter; th->th_offset_count = ncount; tc_min_ticktock_freq = max(1, timecounter->tc_frequency / |
