diff options
Diffstat (limited to 'include/linux/cpumask.h')
| -rw-r--r-- | include/linux/cpumask.h | 28 |
1 files changed, 16 insertions, 12 deletions
diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h index 4bf4479a3a80..75b565194437 100644 --- a/include/linux/cpumask.h +++ b/include/linux/cpumask.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __LINUX_CPUMASK_H #define __LINUX_CPUMASK_H @@ -32,15 +33,15 @@ typedef struct cpumask { DECLARE_BITMAP(bits, NR_CPUS); } cpumask_t; #define cpumask_pr_args(maskp) nr_cpu_ids, cpumask_bits(maskp) #if NR_CPUS == 1 -#define nr_cpu_ids 1 +#define nr_cpu_ids 1U #else -extern int nr_cpu_ids; +extern unsigned int nr_cpu_ids; #endif #ifdef CONFIG_CPUMASK_OFFSTACK /* Assuming NR_CPUS is huge, a runtime limit is more efficient. Also, * not all bits may be allocated. */ -#define nr_cpumask_bits ((unsigned int)nr_cpu_ids) +#define nr_cpumask_bits nr_cpu_ids #else #define nr_cpumask_bits ((unsigned int)NR_CPUS) #endif @@ -130,6 +131,11 @@ static inline unsigned int cpumask_first(const struct cpumask *srcp) return 0; } +static inline unsigned int cpumask_last(const struct cpumask *srcp) +{ + return 0; +} + /* Valid inputs for n are -1 and 0. */ static inline unsigned int cpumask_next(int n, const struct cpumask *srcp) { @@ -179,20 +185,18 @@ static inline unsigned int cpumask_first(const struct cpumask *srcp) } /** - * cpumask_next - get the next cpu in a cpumask - * @n: the cpu prior to the place to search (ie. return will be > @n) - * @srcp: the cpumask pointer + * cpumask_last - get the last CPU in a cpumask + * @srcp: - the cpumask pointer * - * Returns >= nr_cpu_ids if no further cpus set. + * Returns >= nr_cpumask_bits if no CPUs set. */ -static inline unsigned int cpumask_next(int n, const struct cpumask *srcp) +static inline unsigned int cpumask_last(const struct cpumask *srcp) { - /* -1 is a legal arg here. */ - if (n != -1) - cpumask_check(n); - return find_next_bit(cpumask_bits(srcp), nr_cpumask_bits, n+1); + return find_last_bit(cpumask_bits(srcp), nr_cpumask_bits); } +unsigned int cpumask_next(int n, const struct cpumask *srcp); + /** * cpumask_next_zero - get the next unset cpu in a cpumask * @n: the cpu prior to the place to search (ie. return will be > @n) |