On 11/25/2015 05:01 PM, Jisheng Zhang wrote:
These two patches try to improve the dw_apb_timer clocksource/clockevent
performance.
These patches depend on the apbt_readl return value fix patch:
http://lists.infradead.org/pipermail/linux-arm-kernel/2015-November/388250.html
since v3:
- fix commit msg: we measured 4096 rounds of function call. So add this
information into commit msg to avoid confusion.
since v2:
- only use relaxed version in critical path
- inline apbt_readl/apbt_writel
- add some performance numbers
since v1:
- correct the wrong sentence in commit msg about writel performance on
CA9 with outer L2 cache. Thank Arnd for pointing out this in another
thread.
Jisheng Zhang (2):
clocksource/drivers/dw_apb_timer: Inline apbt_readl and apbt_writel
clocksource/drivers/dw_apb_timer: Use {readl|writel}_relaxed in
critical path
drivers/clocksource/dw_apb_timer.c | 30 +++++++++++++++++++++---------
1 file changed, 21 insertions(+), 9 deletions(-)
Applied.
Thanks !
-- Daniel
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