Searched hist:"0 bd40535" (Results 1 – 1 of 1) sorted by relevance
/openbmc/linux/arch/arm/mach-omap2/ |
H A D | sleep34xx.S | 0bd40535 Mon Dec 20 14:05:03 CST 2010 Richard Woodruff <r-woodruff2@ti.com> 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> 0bd40535 Mon Dec 20 14:05:03 CST 2010 Richard Woodruff <r-woodruff2@ti.com> 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>
|