cpufreq: use work_on_cpu in acpi-cpufreq.c for drv_read and drv_write

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Impact: use new work_on_cpu function to reduce stack usage

Replace the saving of current->cpus_allowed and set_cpus_allowed_ptr() with
a work_on_cpu function for drv_read() and drv_write().

Basically converts do_drv_{read,write} into "work_on_cpu" functions that
are now called by drv_read and drv_write.

Note: This patch basically reverts 50c668d6 which reverted 7503bfba, now
that the work_on_cpu() function is more stable.

Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Tested-by: Dieter Ries <clip2@gmx.de>
Tested-by: Maciej Rutecki <maciej.rutecki@gmail.com>
Cc: Dave Jones <davej@redhat.com>
Cc: <cpufreq@vger.kernel.org>

Signed-off-by: Ingo Molnar <mingo@elte.hu>

...

This commit is contained in:

Mike Travis 2009-01-16 15:31:15 -08:00 • committed by Ingo Molnar

parent 8ccad40df8

commit 7285908185

1 changed files with 9 additions and 13 deletions

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arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c

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