linux-kernel - Re: [PATCH] Boottime: A tool for automatic measurement of kernel/bootloader boot time

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Message-ID: <20121011201735.GA15313@kahuna>
Date:	Thu, 11 Oct 2012 15:17:35 -0500
From:	Nishanth Menon <nm@...com>
To:	Lee Jones <lee.jones@...aro.org>
CC:	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>,
	Russell King <linux@....linux.org.uk>,
	<linus.walleij@...ricsson.com>,
	Jonas Aaberg <jonas.aberg@...ricsson.com>,
	Will Deacon <will.deacon@....com>, <arnd@...db.de>,
	Mian Yousaf Kaukab <mian.yousaf.kaukab@...ricsson.com>,
	<dmurphy@...com>
Subject: Re: [PATCH] Boottime: A tool for automatic measurement of
 kernel/bootloader boot time

On 15:42-20121011, Lee Jones wrote:
> From: Jonas Aaberg <jonas.aberg@...ricsson.com>
> 
> The overhead is very low and the results will be found under
> sysfs/bootime, as well as detailed results in debugfs under
> boottime/. The bootgraph* files are compatible with
> scripts/bootgraph.pl. The reason for this patch is to provide
> data (sysfs/boottime) suitable for automatic testcases as
> well as help for developers to reduce the boot time (debugfs).
Tried master:
250d8 Merge branch 'i2c-embedded/for-next' of git://git.pengutronix.de/git/wsa/linux
and v3.6-rc7
with omap2plus_defconfig + CONFIG_BOOTTIME enabled:

init/boottime.c:47:9: error: ‘cpu_usage_stat’ defined as wrong kind of tag
init/boottime.c:47:24: error: array type has incomplete element type
init/boottime.c: In function ‘boottime_mark_core’:
init/boottime.c:127:313: error: ‘struct kernel_stat’ has no member named ‘cpustat’
init/boottime.c:128:311: error: ‘struct kernel_stat’ has no member named ‘cpustat’
init/boottime.c:129:313: error: ‘struct kernel_stat’ has no member named ‘cpustat’
init/boottime.c:130:310: error: ‘struct kernel_stat’ has no member named ‘cpustat’

if it depended on some other patch or a specific maintainer branch,
it was'nt clear.
-- 
Regards,
Nishanth Menon
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