From: Yinghai Lu <yinghai@kernel.org>
To: Avi Kivity <avi@redhat.com>,
Rusty Russell <rusty@rustcorp.com.au>,
Ingo Molnar <mingo@elte.hu>,
Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] cpumask: alloc blank cpumask left over
Date: Sat, 06 Jun 2009 03:57:04 -0700 [thread overview]
Message-ID: <4A2A4B80.1010605@kernel.org> (raw)
In-Reply-To: <4A2A3969.5030101@redhat.com>
so sth like
---
include/linux/cpumask.h | 15 +++++++++++++++
lib/cpumask.c | 12 ++++++++++++
2 files changed, 27 insertions(+)
Index: linux-2.6/include/linux/cpumask.h
===================================================================
--- linux-2.6.orig/include/linux/cpumask.h
+++ linux-2.6/include/linux/cpumask.h
@@ -1022,6 +1022,8 @@ typedef struct cpumask *cpumask_var_t;
bool alloc_cpumask_var_node(cpumask_var_t *mask, gfp_t flags, int node);
bool alloc_cpumask_var(cpumask_var_t *mask, gfp_t flags);
+bool zalloc_cpumask_var_node(cpumask_var_t *mask, gfp_t flags, int node);
+bool zalloc_cpumask_var(cpumask_var_t *mask, gfp_t flags);
void alloc_bootmem_cpumask_var(cpumask_var_t *mask);
void free_cpumask_var(cpumask_var_t mask);
void free_bootmem_cpumask_var(cpumask_var_t mask);
@@ -1040,6 +1042,19 @@ static inline bool alloc_cpumask_var_nod
return true;
}
+static inline bool zalloc_cpumask_var(cpumask_var_t *mask, gfp_t flags)
+{
+ cpumask_clear(*mask);
+ return true;
+}
+
+static inline bool zalloc_cpumask_var_node(cpumask_var_t *mask, gfp_t flags,
+ int node)
+{
+ cpumask_clear(*mask);
+ return true;
+}
+
static inline void alloc_bootmem_cpumask_var(cpumask_var_t *mask)
{
}
Index: linux-2.6/lib/cpumask.c
===================================================================
--- linux-2.6.orig/lib/cpumask.c
+++ linux-2.6/lib/cpumask.c
@@ -119,6 +119,12 @@ bool alloc_cpumask_var_node(cpumask_var_
}
EXPORT_SYMBOL(alloc_cpumask_var_node);
+bool zalloc_cpumask_var_node(cpumask_var_t *mask, gfp_t flags, int node)
+{
+ return alloc_cpumask_var_node(mask, flags | __GFP_ZERO, node);
+}
+EXPORT_SYMBOL(zalloc_cpumask_var_node);
+
/**
* alloc_cpumask_var - allocate a struct cpumask
* @mask: pointer to cpumask_var_t where the cpumask is returned
@@ -135,6 +141,12 @@ bool alloc_cpumask_var(cpumask_var_t *ma
}
EXPORT_SYMBOL(alloc_cpumask_var);
+bool zalloc_cpumask_var(cpumask_var_t *mask, gfp_t flags)
+{
+ return alloc_cpumask_var(mask, flags | __GFP_ZERO);
+}
+EXPORT_SYMBOL(zalloc_cpumask_var);
+
/**
* alloc_bootmem_cpumask_var - allocate a struct cpumask from the bootmem arena.
* @mask: pointer to cpumask_var_t where the cpumask is returned
next prev parent reply other threads:[~2009-06-06 10:57 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-04 21:00 [PATCH] kvm: fix kvm reboot crash when MAXSMP is used Yinghai Lu
2009-06-04 21:01 ` [PATCH] cpumask: alloc blank cpumask left over Yinghai Lu
2009-06-05 4:58 ` Rusty Russell
2009-06-05 5:18 ` Avi Kivity
2009-06-05 5:56 ` Yinghai Lu
2009-06-05 13:41 ` Rusty Russell
2009-06-05 17:34 ` Linus Torvalds
2009-06-05 17:46 ` Yinghai Lu
2009-06-05 17:57 ` Yinghai Lu
2009-06-06 23:40 ` Rusty Russell
2009-06-06 23:43 ` Rusty Russell
2009-06-06 9:22 ` Avi Kivity
2009-06-06 9:36 ` Yinghai Lu
2009-06-06 9:39 ` Avi Kivity
2009-06-06 10:57 ` Yinghai Lu [this message]
2009-06-06 21:50 ` [PATCH 1/6] cpumask: introduce zalloc_cpumask_var Yinghai Lu
2009-06-06 21:51 ` Subject: [PATCH 2/6] cpumask: alloc zeroed cpumask for static cpumask_var_ts Yinghai Lu
2009-06-06 21:52 ` [PATCH 3/6] kvm: fix kvm reboot crash when MAXSMP is used Yinghai Lu
2009-06-06 21:53 ` [PATCH 4/6] x86/cpufreq: use cpumask_copy instead of = Yinghai Lu
2009-06-09 6:57 ` Rusty Russell
2009-06-09 8:13 ` Yinghai Lu
2009-06-10 4:20 ` Rusty Russell
2009-06-10 13:39 ` Dave Jones
2009-06-10 17:01 ` Ingo Molnar
2009-06-09 15:46 ` Linus Torvalds
2009-06-09 16:28 ` Dave Jones
2009-06-09 16:41 ` Linus Torvalds
2009-06-10 4:55 ` Rusty Russell
2009-06-10 6:22 ` Rusty Russell
2009-06-10 11:10 ` S06cpuspeed/2637 is trying to acquire lock (&(&dbs_info->work)->work (was: Re: [PATCH 4/6] x86/cpufreq: use cpumask_copy instead of =) Ingo Molnar
2009-06-10 20:58 ` Dave Jones
2009-06-11 10:52 ` Ingo Molnar
2009-06-20 12:48 ` Ingo Molnar
2009-06-21 19:55 ` Thomas Renninger
2009-06-23 18:17 ` [PATCH] cpufreq: remove dbs_mutex Ingo Molnar
2009-06-23 18:40 ` Ingo Molnar
2009-06-23 18:51 ` Pallipadi, Venkatesh
2009-06-23 19:14 ` Ingo Molnar
2009-06-23 19:24 ` Pallipadi, Venkatesh
2009-06-23 19:32 ` Ingo Molnar
2009-06-25 14:01 ` Fix dead lock in cpufreq for CPU hotplug and suspend for 2.6.30.stable Thomas Renninger
2009-06-25 14:06 ` Thomas Renninger
2009-06-25 14:01 ` [PATCH 1/2] CPUFREQ: Remove unneeded dbs_mutexes from ondemand and conservative governors Thomas Renninger
2009-06-25 14:25 ` Mathieu Desnoyers
2009-06-25 15:03 ` Pallipadi, Venkatesh
2009-06-25 22:17 ` Thomas Renninger
2009-06-25 22:26 ` Thomas Renninger
2009-06-30 6:33 ` Pavel Machek
2009-07-03 10:10 ` Thomas Renninger
2009-07-05 19:46 ` Pavel Machek
2009-06-30 22:58 ` [stable] " Greg KH
2009-06-30 23:14 ` Mathieu Desnoyers
2009-06-30 23:39 ` Greg KH
2009-07-01 9:07 ` Thomas Renninger
2009-06-25 14:01 ` [PATCH 2/2] remove rwsem lock from CPUFREQ_GOV_STOP call (second call site) Thomas Renninger
2009-06-10 19:42 ` [PATCH 4/6] x86/cpufreq: use cpumask_copy instead of = Langsdorf, Mark
2009-06-11 2:34 ` Rusty Russell
2009-09-21 16:44 ` Langsdorf, Mark
2009-06-06 21:55 ` [PATCH 5/6] core: use cpumask_copy instead of = for cpus_allowed in fork Yinghai Lu
2009-06-06 21:56 ` [PATCH 6/6] x86/cpufreq: don't use SPEEDSTEP with MAXSMP Yinghai Lu
2009-06-06 21:56 ` [PATCH 1/6] cpumask: introduce zalloc_cpumask_var Andrew Morton
2009-06-06 22:07 ` Yinghai Lu
2009-06-06 21:58 ` Linus Torvalds
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