diff options
| author | Richard Woodruff <r-woodruff2@ti.com> | 2010-12-20 14:05:03 -0600 |
|---|---|---|
| committer | Kevin Hilman <khilman@deeprootsystems.com> | 2010-12-21 14:45:47 -0800 |
| commit | 0bd40535365c318e331f5e872030a710d5746167 (patch) | |
| tree | e08c1d72b3eac6e260f2d8841c465d154a03c2af /arch/arm/oprofile | |
| parent | 1cbbe37ac5c78fb59ce02f639d6c4f69b610cf5e (diff) | |
OMAP3: PM: Update clean_l2 to use v7_flush_dcache_all
Analysis in TI kernel with ETM showed that using cache mapped flush
in kernel instead of SO mapped flush cost drops by 65% (3.39mS down
to 1.17mS) for clean_l2 which is used during sleep sequences.
Overall:
- speed up
- unfortunately there isn't a good alternative flush method today
- code reduction and less maintenance and potential bug in
unmaintained code
This also fixes the bug with the clean_l2 function usage.
Reported-by: Tony Lindgren <tony@atomide.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Tony Lindgren <tony@atomide.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Jean Pihet <j-pihet@ti.com>
[nm@ti.com: ported rkw's proposal to 2.6.37-rc2]
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Richard Woodruff <r-woodruff2@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch/arm/oprofile')
0 files changed, 0 insertions, 0 deletions