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From: Benoit Boissinot <benoit.boissinot@ens-lyon.org>
To: Andrew Morton <akpm@osdl.org>
Cc: lkml <linux-kernel@vger.kernel.org>, Paul Jackson <pj@engr.sgi.com>
Subject: [PATCH] cpuset: remove function attribute const
Date: Sat, 9 Apr 2005 14:40:49 +0200	[thread overview]
Message-ID: <20050409124048.GD8908@ens-lyon.fr> (raw)

gcc-4 warns with 
include/linux/cpuset.h:21: warning: type qualifiers ignored on function
return type

cpuset_cpus_allowed is declared with const
extern const cpumask_t cpuset_cpus_allowed(const struct task_struct *p);

First const should be __attribute__((const)), but the gcc manual
explains that:

"Note that a function that has pointer arguments and examines the data
pointed to must not be declared const. Likewise, a function that calls a
non-const function usually must not be const. It does not make sense for
a const function to return void."

The following patch remove const from the function declaration.

Signed-off-by: Benoit Boissinot <benoit.boissinot@ens-lyon.org>

--- ./kernel/cpuset.c.orig	2005-04-09 14:14:23.000000000 +0200
+++ ./kernel/cpuset.c	2005-04-09 14:15:19.000000000 +0200
@@ -1432,7 +1432,7 @@ void cpuset_exit(struct task_struct *tsk
  * tasks cpuset.
  **/
 
-const cpumask_t cpuset_cpus_allowed(const struct task_struct *tsk)
+cpumask_t cpuset_cpus_allowed(const struct task_struct *tsk)
 {
 	cpumask_t mask;
 
--- ./include/linux/cpuset.h.orig	2005-04-09 14:14:32.000000000 +0200
+++ ./include/linux/cpuset.h	2005-04-09 14:15:30.000000000 +0200
@@ -18,7 +18,7 @@ extern int cpuset_init(void);
 extern void cpuset_init_smp(void);
 extern void cpuset_fork(struct task_struct *p);
 extern void cpuset_exit(struct task_struct *p);
-extern const cpumask_t cpuset_cpus_allowed(const struct task_struct *p);
+extern cpumask_t cpuset_cpus_allowed(const struct task_struct *p);
 void cpuset_init_current_mems_allowed(void);
 void cpuset_update_current_mems_allowed(void);
 void cpuset_restrict_to_mems_allowed(unsigned long *nodes);

             reply	other threads:[~2005-04-09 12:40 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-04-09 12:40 Benoit Boissinot [this message]
2005-04-09 13:24 ` Paul Jackson

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