From: mark.rutland@arm.com (Mark Rutland)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] arm: ls1021a: utilize hrtimer based broadcast mode
Date: Fri, 10 Jul 2015 16:00:09 +0100 [thread overview]
Message-ID: <20150710150009.GD6564@leverpostej> (raw)
In-Reply-To: <1436521145-21055-1-git-send-email-b18965@freescale.com>
On Fri, Jul 10, 2015 at 10:39:05AM +0100, Alison Wang wrote:
> Hrtimer based broadcast mode is used instead of
> periodic tick broadcast to provide high resolution
> clock in SMP.
>
> Signed-off-by: Alison Wang <alison.wang@freescale.com>
> ---
> arch/arm/mach-imx/mach-ls1021a.c | 11 +++++++++++
> 1 file changed, 11 insertions(+)
>
> diff --git a/arch/arm/mach-imx/mach-ls1021a.c b/arch/arm/mach-imx/mach-ls1021a.c
> index b89c858..1a1a115 100644
> --- a/arch/arm/mach-imx/mach-ls1021a.c
> +++ b/arch/arm/mach-imx/mach-ls1021a.c
> @@ -8,9 +8,19 @@
> */
>
> #include <asm/mach/arch.h>
> +#include <linux/clk-provider.h>
> +#include <linux/clockchips.h>
> +#include <linux/clocksource.h>
>
> #include "common.h"
>
> +static void __init ls1021a_init_time(void)
> +{
> + of_clk_init(NULL);
> + clocksource_of_init();
> + tick_setup_hrtimer_broadcast();
> +}
It would be nicer to place this in the arch time_init() function, as
already happens for arm64 and powerpc. That way everyone can benefit.
Thanks,
Mark.
> +
> static const char * const ls1021a_dt_compat[] __initconst = {
> "fsl,ls1021a",
> NULL,
> @@ -18,5 +28,6 @@ static const char * const ls1021a_dt_compat[] __initconst = {
>
> DT_MACHINE_START(LS1021A, "Freescale LS1021A")
> .smp = smp_ops(ls1021a_smp_ops),
> + .init_time = ls1021a_init_time,
> .dt_compat = ls1021a_dt_compat,
> MACHINE_END
> --
> 2.1.0.27.g96db324
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>
next prev parent reply other threads:[~2015-07-10 15:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-10 9:39 [PATCH] arm: ls1021a: utilize hrtimer based broadcast mode Alison Wang
2015-07-10 15:00 ` Mark Rutland [this message]
2015-07-14 9:57 ` Huan Wang
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