Messages in this thread Patch in this message | | | From | Jisheng Zhang <> | Subject | [PATCH v4 1/2] clocksource/drivers/dw_apb_timer: Inline apbt_readl and apbt_writel | Date | Thu, 26 Nov 2015 00:01:52 +0800 |
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It seems gcc can automatically inline apbt_writel() for us, but apbt_real isn't inlined. This patch makes them inline to get a trivial performance improvement: 4096 rounds of __apbt_read_clocksource() call spend time on Marvell BG4CT platform:
before the patch 1275240ns on average after the patch 1263240ns on average
so we get 1% performance improvement.
Signed-off-by: Jisheng Zhang <jszhang@marvell.com> --- drivers/clocksource/dw_apb_timer.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/clocksource/dw_apb_timer.c b/drivers/clocksource/dw_apb_timer.c index 3a6d9db..114696b 100644 --- a/drivers/clocksource/dw_apb_timer.c +++ b/drivers/clocksource/dw_apb_timer.c @@ -49,13 +49,13 @@ clocksource_to_dw_apb_clocksource(struct clocksource *cs) return container_of(cs, struct dw_apb_clocksource, cs); } -static u32 apbt_readl(struct dw_apb_timer *timer, unsigned long offs) +static inline u32 apbt_readl(struct dw_apb_timer *timer, unsigned long offs) { return readl(timer->base + offs); } -static void apbt_writel(struct dw_apb_timer *timer, u32 val, - unsigned long offs) +static inline void apbt_writel(struct dw_apb_timer *timer, u32 val, + unsigned long offs) { writel(val, timer->base + offs); } -- 2.6.2
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