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| author | Linus Torvalds <torvalds@g5.osdl.org> | 2005-12-21 11:05:15 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-12-21 11:05:15 -0800 |
| commit | bee5ab3f572d9499c42e75b958ff7309ff830a13 (patch) | |
| tree | ec48438ed1a7b3d3794a0a4cc577d0bab69b7f03 | |
| parent | b05948d9b7167e23af88cc65b9ffa4687eaf1f0d (diff) | |
| parent | 5b2db367a28c12e8dfd0b404d9ea35e948c5d7b3 (diff) | |
| download | lwn-bee5ab3f572d9499c42e75b958ff7309ff830a13.tar.gz lwn-bee5ab3f572d9499c42e75b958ff7309ff830a13.zip | |
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
| -rw-r--r-- | drivers/acpi/processor_idle.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 5f51057518b0..807b0df308f1 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -274,8 +274,6 @@ static void acpi_processor_idle(void) } } - cx->usage++; - #ifdef CONFIG_HOTPLUG_CPU /* * Check for P_LVL2_UP flag before entering C2 and above on @@ -283,9 +281,12 @@ static void acpi_processor_idle(void) * detection phase, to work cleanly with logical CPU hotplug. */ if ((cx->type != ACPI_STATE_C1) && (num_online_cpus() > 1) && - !pr->flags.has_cst && acpi_fadt.plvl2_up) - cx->type = ACPI_STATE_C1; + !pr->flags.has_cst && !acpi_fadt.plvl2_up) + cx = &pr->power.states[ACPI_STATE_C1]; #endif + + cx->usage++; + /* * Sleep: * ------ @@ -386,6 +387,15 @@ static void acpi_processor_idle(void) next_state = pr->power.state; +#ifdef CONFIG_HOTPLUG_CPU + /* Don't do promotion/demotion */ + if ((cx->type == ACPI_STATE_C1) && (num_online_cpus() > 1) && + !pr->flags.has_cst && !acpi_fadt.plvl2_up) { + next_state = cx; + goto end; + } +#endif + /* * Promotion? * ---------- @@ -557,7 +567,7 @@ static int acpi_processor_get_power_info_fadt(struct acpi_processor *pr) * Check for P_LVL2_UP flag before entering C2 and above on * an SMP system. */ - if ((num_online_cpus() > 1) && acpi_fadt.plvl2_up) + if ((num_online_cpus() > 1) && !acpi_fadt.plvl2_up) return_VALUE(-ENODEV); #endif |