SLOW_WORK: Allow the owner of a work item to determine if it is queued or not

[safe/jmp/linux-2.6] / lib / cpumask.c

diff --git a/lib/cpumask.c b/lib/cpumask.c
index 3389e24..7bb4142 100644 (file)
--- a/lib/cpumask.c
+++ b/lib/cpumask.c
@@ -92,15 +92,8 @@ int cpumask_any_but(const struct cpumask *mask, unsigned int cpu)
  */
 bool alloc_cpumask_var_node(cpumask_var_t *mask, gfp_t flags, int node)
 {
-       if (likely(slab_is_available()))
-               *mask = kmalloc_node(cpumask_size(), flags, node);
-       else {
-#ifdef CONFIG_DEBUG_PER_CPU_MAPS
-               printk(KERN_ERR
-                       "=> alloc_cpumask_var: kmalloc not available!\n");
-#endif
-               *mask = NULL;
-       }
+       *mask = kmalloc_node(cpumask_size(), flags, node);
+
 #ifdef CONFIG_DEBUG_PER_CPU_MAPS
        if (!*mask) {
                printk(KERN_ERR "=> alloc_cpumask_var: failed!\n");
@@ -109,16 +102,22 @@ bool alloc_cpumask_var_node(cpumask_var_t *mask, gfp_t flags, int node)
 #endif
        /* FIXME: Bandaid to save us from old primitives which go to NR_CPUS. */
        if (*mask) {
+               unsigned char *ptr = (unsigned char *)cpumask_bits(*mask);
                unsigned int tail;
                tail = BITS_TO_LONGS(NR_CPUS - nr_cpumask_bits) * sizeof(long);
-               memset(cpumask_bits(*mask) + cpumask_size() - tail,
-                      0, tail);
+               memset(ptr + cpumask_size() - tail, 0, tail);
        }
 
        return *mask != NULL;
 }
 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 +134,12 @@ bool alloc_cpumask_var(cpumask_var_t *mask, gfp_t flags)
 }
 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