* [PATCH v3] mmc/sdhci-acpi: enable sdhci-acpi device to suspend/resume asynchronously
@ 2015-11-16 6:23 Fu, Zhonghui
2015-11-23 4:04 ` Fu, Zhonghui
0 siblings, 1 reply; 2+ messages in thread
From: Fu, Zhonghui @ 2015-11-16 6:23 UTC (permalink / raw)
To: Ulf Hansson, Adrian Hunter, yunpeng.gao, andriy.shevchenko,
peter.griffin
Cc: linux-mmc, linux-kernel@vger.kernel.org
Now, PM core supports asynchronous suspend/resume mode for devices
during system suspend/resume, and the power state transition of one
device may be completed in separate kernel thread. PM core ensures
all power state transition timing dependency between devices. This
patch enables sdhci-acpi device to suspend/resume asynchronously.
This will take advantage of multicore and improve system
suspend/resume speed. After enabling the sdhci-acpi devices and all
their child devices to suspend/resume asynchronously on ASUS T100TA,
the system suspend-to-idle time is reduced from 1645ms to 1096ms, and
the system resume time is reduced from 940ms to 908ms.
Signed-off-by: Zhonghui Fu <zhonghui.fu@linux.intel.com>
---
Changes in v3:
- Add test result in commit message
drivers/mmc/host/sdhci-acpi.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
index f6047fc..3d27f2d 100644
--- a/drivers/mmc/host/sdhci-acpi.c
+++ b/drivers/mmc/host/sdhci-acpi.c
@@ -388,6 +388,8 @@ static int sdhci_acpi_probe(struct platform_device *pdev)
pm_runtime_enable(dev);
}
+ device_enable_async_suspend(dev);
+
return 0;
err_free:
-- 1.7.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH v3] mmc/sdhci-acpi: enable sdhci-acpi device to suspend/resume asynchronously
2015-11-16 6:23 [PATCH v3] mmc/sdhci-acpi: enable sdhci-acpi device to suspend/resume asynchronously Fu, Zhonghui
@ 2015-11-23 4:04 ` Fu, Zhonghui
0 siblings, 0 replies; 2+ messages in thread
From: Fu, Zhonghui @ 2015-11-23 4:04 UTC (permalink / raw)
To: Ulf Hansson, Adrian Hunter, yunpeng.gao, andriy.shevchenko,
peter.griffin
Cc: linux-mmc, linux-kernel@vger.kernel.org
Any comments are welcome.
Thanks,
Zhonghui
On 11/16/2015 2:23 PM, Fu, Zhonghui wrote:
> Now, PM core supports asynchronous suspend/resume mode for devices
> during system suspend/resume, and the power state transition of one
> device may be completed in separate kernel thread. PM core ensures
> all power state transition timing dependency between devices. This
> patch enables sdhci-acpi device to suspend/resume asynchronously.
> This will take advantage of multicore and improve system
> suspend/resume speed. After enabling the sdhci-acpi devices and all
> their child devices to suspend/resume asynchronously on ASUS T100TA,
> the system suspend-to-idle time is reduced from 1645ms to 1096ms, and
> the system resume time is reduced from 940ms to 908ms.
>
> Signed-off-by: Zhonghui Fu <zhonghui.fu@linux.intel.com>
> ---
> Changes in v3:
> - Add test result in commit message
>
> drivers/mmc/host/sdhci-acpi.c | 2 ++
> 1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
> index f6047fc..3d27f2d 100644
> --- a/drivers/mmc/host/sdhci-acpi.c
> +++ b/drivers/mmc/host/sdhci-acpi.c
> @@ -388,6 +388,8 @@ static int sdhci_acpi_probe(struct platform_device *pdev)
> pm_runtime_enable(dev);
> }
>
> + device_enable_async_suspend(dev);
> +
> return 0;
>
> err_free:
> -- 1.7.1
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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