linux-kernel - Re: [PATCH -mm 2/2] Introduce freezer flags

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Message-ID: <20070427214047.GA21224@in.ibm.com>
Date:	Sat, 28 Apr 2007 03:10:47 +0530
From:	Gautham R Shenoy <ego@...ibm.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>, Oleg Nesterov <oleg@...sign.ru>,
	Pavel Machek <pavel@....cz>,
	Pekka Enberg <penberg@...helsinki.fi>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -mm 2/2] Introduce freezer flags

On Fri, Apr 27, 2007 at 05:40:16PM +0200, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rjw@...k.pl>
> 
> Move all of the freezer-related flags to a separate field in task_struct and
> introduce functions to operate them using set_bit() etc.
> 
> 
> Index: linux-2.6.21-rc7-mm2/include/linux/sched.h
> ===================================================================
> --- linux-2.6.21-rc7-mm2.orig/include/linux/sched.h
> +++ linux-2.6.21-rc7-mm2/include/linux/sched.h
> @@ -1006,7 +1006,10 @@ struct task_struct {
>  	/* Deadlock detection and priority inheritance handling */
>  	struct rt_mutex_waiter *pi_blocked_on;
>  #endif
> -
> +#ifdef CONFIG_FREEZER
> +	/* Used by the process freezer, defined in freezer.h */
> +	unsigned int freezer_flags;

unsigned long freezer_flags; ??

Else it throws the following warnings.

include/linux/freezer.h: In function `frozen':
include/linux/freezer.h:22: warning: passing arg 2 of
`constant_test_bit' from incompatible pointer type
include/linux/freezer.h:22: warning: passing arg 2 of
`variable_test_bit' from incompatible pointer type
include/linux/freezer.h: In function `set_frozen_flag':
include/linux/freezer.h:27: warning: passing arg 2 of `set_bit' from
incompatible pointer type
include/linux/freezer.h: In function `clear_frozen_flag':
include/linux/freezer.h:32: warning: passing arg 2 of `clear_bit' from
incompatible pointer type
include/linux/freezer.h: In function `freezing':
include/linux/freezer.h:40: warning: passing arg 2 of
`constant_test_bit' from incompatible pointer type
include/linux/freezer.h:40: warning: passing arg 2 of
`variable_test_bit' from incompatible pointer type
include/linux/freezer.h: In function `freeze':
include/linux/freezer.h:48: warning: passing arg 2 of `set_bit' from
incompatible pointer type
include/linux/freezer.h: In function `clear_freeze_flag':
include/linux/freezer.h:56: warning: passing arg 2 of `clear_bit' from
incompatible pointer type
include/linux/freezer.h: In function `freezer_should_exempt':
include/linux/freezer.h:64: warning: passing arg 2 of
`constant_test_bit' from incompatible pointer type
include/linux/freezer.h:64: warning: passing arg 2 of
`variable_test_bit' from incompatible pointer type
include/linux/freezer.h: In function `freezer_exempt':
include/linux/freezer.h:72: warning: passing arg 2 of `set_bit' from
incompatible pointer type
include/linux/freezer.h: In function `freezer_do_not_count':
include/linux/freezer.h:132: warning: passing arg 2 of `set_bit' from
incompatible pointer type
include/linux/freezer.h: In function `freezer_count':
include/linux/freezer.h:142: warning: passing arg 2 of `clear_bit' from
incompatible pointer type
include/linux/freezer.h: In function `freezer_should_skip':
include/linux/freezer.h:152: warning: passing arg 2 of
`constant_test_bit' from incompatible pointer type
include/linux/freezer.h:152: warning: passing arg 2 of
`variable_test_bit' from incompatible pointer type

Regards
gautham.
-- 
Gautham R Shenoy
Linux Technology Center
IBM India.
"Freedom comes with a price tag of responsibility, which is still a bargain,
because Freedom is priceless!"
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