From: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
To: Thierry Reding
<thierry.reding-RM9K5IK7kjKj5M59NBduVrNAH6kLmebB@public.gmane.org>
Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
Subject: Re: [PATCH] ARM: tegra: add kexec support to defconfig
Date: Thu, 03 Jan 2013 14:18:27 -0700 [thread overview]
Message-ID: <50E5F5A3.1060507@wwwdotorg.org> (raw)
In-Reply-To: <20130103210541.GB4412-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
On 01/03/2013 02:05 PM, Thierry Reding wrote:
> On Wed, Jan 02, 2013 at 02:12:21PM -0700, Stephen Warren wrote:
>> From: Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
>>
>> Signed-off-by: Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org> ---
>> arch/arm/configs/tegra_defconfig | 1 + 1 file changed, 1
>> insertion(+)
>>
>> diff --git a/arch/arm/configs/tegra_defconfig
>> b/arch/arm/configs/tegra_defconfig index 742dc41..e621603 100644
>> --- a/arch/arm/configs/tegra_defconfig +++
>> b/arch/arm/configs/tegra_defconfig @@ -34,6 +34,7 @@
>> CONFIG_AEABI=y CONFIG_HIGHMEM=y CONFIG_ZBOOT_ROM_TEXT=0x0
>> CONFIG_ZBOOT_ROM_BSS=0x0 +CONFIG_KEXEC=y CONFIG_CPU_FREQ=y
>> CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y CONFIG_CPU_IDLE=y
>
> Interesting. What do you plan to use this for? kdump?
I plan to burn a kernel (and a small stub, and a DTB) into flash
instead of U-Boot, and hence not have to rely on any bootloader.
Even ignoring that, a quick scp of a new kernel to a target followed
by a kexec is faster than rebooting all the way through U-Boot's
slower Ethernet support to boot a new kernel.
next prev parent reply other threads:[~2013-01-03 21:18 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-02 21:12 [PATCH] ARM: tegra: add kexec support to defconfig Stephen Warren
[not found] ` <1357161141-26430-1-git-send-email-swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-01-03 16:50 ` Stephen Warren
2013-01-03 21:05 ` Thierry Reding
[not found] ` <20130103210541.GB4412-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
2013-01-03 21:18 ` Stephen Warren [this message]
[not found] ` <50E5F5A3.1060507-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-01-03 21:29 ` Thierry Reding
[not found] ` <20130103212903.GA27749-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
2013-01-03 21:45 ` Stephen Warren
[not found] ` <50E5FBDE.90804-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-01-04 20:08 ` Thierry Reding
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