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| author | Len Brown <len.brown@intel.com> | 2009-05-15 07:29:31 +0200 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2009-05-16 07:52:39 +0200 |
| commit | a0bf284bfedd6dc95bbee7ebf5ccf3b5f753a008 (patch) | |
| tree | 2cad50754a5af8ac5dd03fae5977bcf0ec88dd1c /drivers/spi/pxa2xx_spi.c | |
| parent | ACPI: idle: fix init-time TSC check regression (diff) | |
| download | linux-a0bf284bfedd6dc95bbee7ebf5ccf3b5f753a008.tar.xz linux-a0bf284bfedd6dc95bbee7ebf5ccf3b5f753a008.zip | |
ACPI: Idle C-states disabled by max_cstate should not disable the TSC
Processor idle power states C2 and C3 stop the TSC on many machines.
Linux recognizes this situation and marks the TSC as unstable:
Marking TSC unstable due to TSC halts in idle
But if those same machines are booted with "processor.max_cstate=1",
then there is no need to validate C2 and C3, and no need to
disable the TSC, which can be reliably used as a clocksource.
Signed-off-by: Len Brown <len.brown@intel.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/spi/pxa2xx_spi.c')
0 files changed, 0 insertions, 0 deletions