diff options
author | David S. Miller <davem@davemloft.net> | 2008-11-11 18:43:02 -0500 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2008-11-11 18:43:02 -0500 |
commit | 7e452baf6b96b5aeba097afd91501d33d390cc97 (patch) | |
tree | 9b0e062d3677d50d731ffd0fba47423bfdee9253 /lib | |
parent | 3ac38c3a2e7dac3f8f35a56eb85c27881a4c3833 (diff) | |
parent | f21f237cf55494c3a4209de323281a3b0528da10 (diff) |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/message/fusion/mptlan.c
drivers/net/sfc/ethtool.c
net/mac80211/debugfs_sta.c
Diffstat (limited to 'lib')
-rw-r--r-- | lib/cpumask.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/lib/cpumask.c b/lib/cpumask.c index 5f97dc25ef9c..8d03f22c6ced 100644 --- a/lib/cpumask.c +++ b/lib/cpumask.c | |||
@@ -2,6 +2,7 @@ | |||
2 | #include <linux/bitops.h> | 2 | #include <linux/bitops.h> |
3 | #include <linux/cpumask.h> | 3 | #include <linux/cpumask.h> |
4 | #include <linux/module.h> | 4 | #include <linux/module.h> |
5 | #include <linux/bootmem.h> | ||
5 | 6 | ||
6 | int __first_cpu(const cpumask_t *srcp) | 7 | int __first_cpu(const cpumask_t *srcp) |
7 | { | 8 | { |
@@ -35,3 +36,81 @@ int __any_online_cpu(const cpumask_t *mask) | |||
35 | return cpu; | 36 | return cpu; |
36 | } | 37 | } |
37 | EXPORT_SYMBOL(__any_online_cpu); | 38 | EXPORT_SYMBOL(__any_online_cpu); |
39 | |||
40 | /** | ||
41 | * cpumask_next_and - get the next cpu in *src1p & *src2p | ||
42 | * @n: the cpu prior to the place to search (ie. return will be > @n) | ||
43 | * @src1p: the first cpumask pointer | ||
44 | * @src2p: the second cpumask pointer | ||
45 | * | ||
46 | * Returns >= nr_cpu_ids if no further cpus set in both. | ||
47 | */ | ||
48 | int cpumask_next_and(int n, const struct cpumask *src1p, | ||
49 | const struct cpumask *src2p) | ||
50 | { | ||
51 | while ((n = cpumask_next(n, src1p)) < nr_cpu_ids) | ||
52 | if (cpumask_test_cpu(n, src2p)) | ||
53 | break; | ||
54 | return n; | ||
55 | } | ||
56 | EXPORT_SYMBOL(cpumask_next_and); | ||
57 | |||
58 | /** | ||
59 | * cpumask_any_but - return a "random" in a cpumask, but not this one. | ||
60 | * @mask: the cpumask to search | ||
61 | * @cpu: the cpu to ignore. | ||
62 | * | ||
63 | * Often used to find any cpu but smp_processor_id() in a mask. | ||
64 | * Returns >= nr_cpu_ids if no cpus set. | ||
65 | */ | ||
66 | int cpumask_any_but(const struct cpumask *mask, unsigned int cpu) | ||
67 | { | ||
68 | unsigned int i; | ||
69 | |||
70 | cpumask_check(cpu); | ||
71 | for_each_cpu(i, mask) | ||
72 | if (i != cpu) | ||
73 | break; | ||
74 | return i; | ||
75 | } | ||
76 | |||
77 | /* These are not inline because of header tangles. */ | ||
78 | #ifdef CONFIG_CPUMASK_OFFSTACK | ||
79 | bool alloc_cpumask_var(cpumask_var_t *mask, gfp_t flags) | ||
80 | { | ||
81 | if (likely(slab_is_available())) | ||
82 | *mask = kmalloc(cpumask_size(), flags); | ||
83 | else { | ||
84 | #ifdef CONFIG_DEBUG_PER_CPU_MAPS | ||
85 | printk(KERN_ERR | ||
86 | "=> alloc_cpumask_var: kmalloc not available!\n"); | ||
87 | dump_stack(); | ||
88 | #endif | ||
89 | *mask = NULL; | ||
90 | } | ||
91 | #ifdef CONFIG_DEBUG_PER_CPU_MAPS | ||
92 | if (!*mask) { | ||
93 | printk(KERN_ERR "=> alloc_cpumask_var: failed!\n"); | ||
94 | dump_stack(); | ||
95 | } | ||
96 | #endif | ||
97 | return *mask != NULL; | ||
98 | } | ||
99 | EXPORT_SYMBOL(alloc_cpumask_var); | ||
100 | |||
101 | void __init alloc_bootmem_cpumask_var(cpumask_var_t *mask) | ||
102 | { | ||
103 | *mask = alloc_bootmem(cpumask_size()); | ||
104 | } | ||
105 | |||
106 | void free_cpumask_var(cpumask_var_t mask) | ||
107 | { | ||
108 | kfree(mask); | ||
109 | } | ||
110 | EXPORT_SYMBOL(free_cpumask_var); | ||
111 | |||
112 | void __init free_bootmem_cpumask_var(cpumask_var_t mask) | ||
113 | { | ||
114 | free_bootmem((unsigned long)mask, cpumask_size()); | ||
115 | } | ||
116 | #endif | ||