diff options
| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2010-06-30 12:16:24 +0200 |
|---|---|---|
| committer | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2010-07-26 14:27:25 +0200 |
| commit | 2dcf78c0eeae3bd07082821557014f25f02ca2e9 (patch) | |
| tree | 8ca5c4c7f35c9a9ab07fcd9732124c905e609aa1 /drivers/acpi/acpi_pad.c | |
| parent | 6b6322676add0fa2713d0ec89a28390fd4d907f5 (diff) | |
| parent | 5109a4597f7e758b8d20694392d0361a0b4c43b1 (diff) | |
Merge branch 'imx/for-2.6.36' of git://git.pengutronix.de/git/ukl/linux-2.6 into HEAD
There are some more conflicts than detected by git, namely support for
the newly added cpuimx machines needed to be converted to dynamic device
registration.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Conflicts:
arch/arm/mach-imx/Makefile
arch/arm/mach-imx/devices.c
arch/arm/mach-imx/devices.h
arch/arm/mach-imx/eukrea_mbimx27-baseboard.c
arch/arm/mach-mx2/Kconfig
arch/arm/mach-mx25/Makefile
arch/arm/mach-mx25/devices.c
arch/arm/plat-mxc/include/mach/mx25.h
arch/arm/plat-mxc/include/mach/mxc_nand.h
Diffstat (limited to 'drivers/acpi/acpi_pad.c')
| -rw-r--r-- | drivers/acpi/acpi_pad.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c index 62122134693b..d269a8f3329c 100644 --- a/drivers/acpi/acpi_pad.c +++ b/drivers/acpi/acpi_pad.c @@ -43,6 +43,10 @@ static DEFINE_MUTEX(isolated_cpus_lock); #define CPUID5_ECX_EXTENSIONS_SUPPORTED (0x1) #define CPUID5_ECX_INTERRUPT_BREAK (0x2) static unsigned long power_saving_mwait_eax; + +static unsigned char tsc_detected_unstable; +static unsigned char tsc_marked_unstable; + static void power_saving_mwait_init(void) { unsigned int eax, ebx, ecx, edx; @@ -87,8 +91,8 @@ static void power_saving_mwait_init(void) /*FALL THROUGH*/ default: - /* TSC could halt in idle, so notify users */ - mark_tsc_unstable("TSC halts in idle"); + /* TSC could halt in idle */ + tsc_detected_unstable = 1; } #endif } @@ -168,16 +172,14 @@ static int power_saving_thread(void *data) do_sleep = 0; - current_thread_info()->status &= ~TS_POLLING; - /* - * TS_POLLING-cleared state must be visible before we test - * NEED_RESCHED: - */ - smp_mb(); - expire_time = jiffies + HZ * (100 - idle_pct) / 100; while (!need_resched()) { + if (tsc_detected_unstable && !tsc_marked_unstable) { + /* TSC could halt in idle, so notify users */ + mark_tsc_unstable("TSC halts in idle"); + tsc_marked_unstable = 1; + } local_irq_disable(); cpu = smp_processor_id(); clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER, @@ -200,8 +202,6 @@ static int power_saving_thread(void *data) } } - current_thread_info()->status |= TS_POLLING; - /* * current sched_rt has threshold for rt task running time. * When a rt task uses 95% CPU time, the rt thread will be |