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authorMike Travis <travis@sgi.com>2008-04-04 18:11:02 -0700
committerIngo Molnar <mingo@elte.hu>2008-04-19 19:44:59 +0200
commit321a8e9dcb714f3c350ba55e41ed447bf3f05fac (patch)
treee75ca8ebcee0954dc6e313864ebba9f72e984fc8 /init/main.c
parent7c16ec585c558960a508ccf9a08fcb9ed49b3754 (diff)
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cpumask: add CPU_MASK_ALL_PTR macro
* Add a static cpumask_t variable "CPU_MASK_ALL_PTR" to use as a pointer reference to CPU_MASK_ALL. This reduces where possible the instances where CPU_MASK_ALL allocates and fills a large array on the stack. Used only if NR_CPUS > BITS_PER_LONG. * Change init/main.c to use new set_cpus_allowed_ptr(). Depends on: [sched-devel]: sched: add new set_cpus_allowed_ptr function Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'init/main.c')
-rw-r--r--init/main.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/init/main.c b/init/main.c
index 99ce94930b0..2df3f0617fd 100644
--- a/init/main.c
+++ b/init/main.c
@@ -363,6 +363,11 @@ static inline void smp_prepare_cpus(unsigned int maxcpus) { }
#else
+#if NR_CPUS > BITS_PER_LONG
+cpumask_t cpu_mask_all __read_mostly = CPU_MASK_ALL;
+EXPORT_SYMBOL(cpu_mask_all);
+#endif
+
#ifndef CONFIG_HAVE_SETUP_PER_CPU_AREA
unsigned long __per_cpu_offset[NR_CPUS] __read_mostly;
@@ -811,7 +816,7 @@ static int __init kernel_init(void * unused)
/*
* init can run on any cpu.
*/
- set_cpus_allowed(current, CPU_MASK_ALL);
+ set_cpus_allowed_ptr(current, CPU_MASK_ALL_PTR);
/*
* Tell the world that we're going to be the grim
* reaper of innocent orphaned children.