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| author | Jeff Garzik <jgarzik@pobox.com> | 2006-01-03 10:58:53 -0500 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2006-01-03 10:58:53 -0500 |
| commit | a18ceba7b40e24a9da87249bd74f16ea5abd6894 (patch) | |
| tree | 5ce615d345e720ddabf95c46fb62287ee763ad4e /drivers/acpi/processor_idle.c | |
| parent | aaadff81195056c7c14e0d834b3318c624c0fd78 (diff) | |
| parent | 88026842b0a760145aa71d69e74fbc9ec118ca44 (diff) | |
| download | linux-a18ceba7b40e24a9da87249bd74f16ea5abd6894.tar.gz linux-a18ceba7b40e24a9da87249bd74f16ea5abd6894.tar.xz | |
Merge branch 'master'
Diffstat (limited to 'drivers/acpi/processor_idle.c')
| -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 |