diff options
| author | Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> | 2008-04-09 21:31:46 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-05-09 21:40:41 -0700 |
| commit | f8f82be93ff5b04a494141f707066fc902bd6e54 (patch) | |
| tree | d5e8eba8c45f7a9636cf9ea912a3f55edeea6da5 | |
| parent | 4d25341bc72d15458570067e1a118d200d117cb8 (diff) | |
2.6.25 regression: powertop says 120K wakeups/sec
commit 0fda6b403f0eca66ad8a7c946b3996e359100443 upstream
Patch to fix huge number of wakeups reported due to recent changes in
processor_idle.c. The problem was that the entry_method determination was
broken due to one of the recent commits (bc71bec91f987) causing
C1 entry to not to go to halt.
http://lkml.org/lkml/2008/3/22/124
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/acpi/processor_idle.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 788da9781f80..836362b50faa 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -848,6 +848,7 @@ static int acpi_processor_get_power_info_default(struct acpi_processor *pr) /* all processors need to support C1 */ pr->power.states[ACPI_STATE_C1].type = ACPI_STATE_C1; pr->power.states[ACPI_STATE_C1].valid = 1; + pr->power.states[ACPI_STATE_C1].entry_method = ACPI_CSTATE_HALT; } /* the C0 state only exists as a filler in our array */ pr->power.states[ACPI_STATE_C0].valid = 1; @@ -960,6 +961,9 @@ static int acpi_processor_get_power_info_cst(struct acpi_processor *pr) cx.address); } + if (cx.type == ACPI_STATE_C1) { + cx.valid = 1; + } obj = &(element->package.elements[2]); if (obj->type != ACPI_TYPE_INTEGER) |