On Saturday 09 February 2013 02:49 AM, Kevin Hilman wrote:
Santosh Shilimkar <santosh.shilimkar@xxxxxx> writes:
Current CPU PM code code make use of common cpu_suspend() path for all the
CPU power states which is not optimal. In fact cpu_suspend() path is needed
only when we put CPU power domain to off state where the CPU context is lost.
Update the code accordingly so that the expensive cpu_suspend() path
can be avoided for the shallow CPU power states like CPU PD INA/CSWR.
Cc: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx>
Reported-by: Richard Woodruff <r-woodruff2@xxxxxx>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@xxxxxx>
Looks OK at first glance, but are you sure this is right for the
various ways both clusters might idle using coupled CPUidle?
Yes it is perfectly safe from all C-states. This patch has been part of
the OMAP4/OMAP5 product port for some time. I forgot to send it upstream
some how :(
Some description of the testing would be helpful here.
Sorry. Should have mentioned it in first place.
Patch is being tested on OMAP4430 (idle/suspend) and OMAP5 with
few out of tree patches.
Regards,
Santosh
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