From mboxrd@z Thu Jan 1 00:00:00 1970 From: daniel.lezcano@linaro.org (Daniel Lezcano) Date: Tue, 15 Dec 2015 21:42:05 +0100 Subject: [PATCH v4 0/2] clocksource/drivers/dw_apb_timer: improve performance a bit In-Reply-To: <1448467313-5626-1-git-send-email-jszhang@marvell.com> References: <1448467313-5626-1-git-send-email-jszhang@marvell.com> Message-ID: <56707B1D.10807@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 -- Linaro.org ? Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog