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Diffstat (limited to 'include/linux/cpumask.h')
-rw-r--r--include/linux/cpumask.h19
1 files changed, 11 insertions, 8 deletions
diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index 2f065ad97541..c2aa0aa26b45 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -174,8 +174,9 @@ static inline unsigned int cpumask_last(const struct cpumask *srcp)
static inline
unsigned int cpumask_next(int n, const struct cpumask *srcp)
{
- /* n is a prior cpu */
- cpumask_check(n + 1);
+ /* -1 is a legal arg here. */
+ if (n != -1)
+ cpumask_check(n);
return find_next_bit(cpumask_bits(srcp), nr_cpumask_bits, n + 1);
}
@@ -188,8 +189,9 @@ unsigned int cpumask_next(int n, const struct cpumask *srcp)
*/
static inline unsigned int cpumask_next_zero(int n, const struct cpumask *srcp)
{
- /* n is a prior cpu */
- cpumask_check(n + 1);
+ /* -1 is a legal arg here. */
+ if (n != -1)
+ cpumask_check(n);
return find_next_zero_bit(cpumask_bits(srcp), nr_cpumask_bits, n+1);
}
@@ -229,8 +231,9 @@ static inline
unsigned int cpumask_next_and(int n, const struct cpumask *src1p,
const struct cpumask *src2p)
{
- /* n is a prior cpu */
- cpumask_check(n + 1);
+ /* -1 is a legal arg here. */
+ if (n != -1)
+ cpumask_check(n);
return find_next_and_bit(cpumask_bits(src1p), cpumask_bits(src2p),
nr_cpumask_bits, n + 1);
}
@@ -260,8 +263,8 @@ static inline
unsigned int cpumask_next_wrap(int n, const struct cpumask *mask, int start, bool wrap)
{
cpumask_check(start);
- /* n is a prior cpu */
- cpumask_check(n + 1);
+ if (n != -1)
+ cpumask_check(n);
/*
* Return the first available CPU when wrapping, or when starting before cpu0,