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| author | Yury Norov <yury.norov@gmail.com> | 2022-01-23 10:38:56 -0800 |
|---|---|---|
| committer | Yury Norov <yury.norov@gmail.com> | 2022-06-03 06:52:57 -0700 |
| commit | b55032f1067a02c7f80943dd118060952e8bd7ac (patch) | |
| tree | d24cf74d8214ffed9cd1d9d8c5f4407e6621cd4b /mm/vmstat.c | |
| parent | 95e3a97387d6c396172f944b45bd515c7d1e8bc2 (diff) | |
| download | linux-b55032f1067a02c7f80943dd118060952e8bd7ac.tar.gz linux-b55032f1067a02c7f80943dd118060952e8bd7ac.tar.bz2 linux-b55032f1067a02c7f80943dd118060952e8bd7ac.zip | |
mm/vmstat: replace cpumask_weight with cpumask_empty where appropriate
mm/vmstat.c code calls cpumask_weight() to check if any bit of a given
cpumask is set. We can do it more efficiently with cpumask_empty() because
cpumask_empty() stops traversing the cpumask as soon as it finds first set
bit, while cpumask_weight() counts all bits unconditionally.
Signed-off-by: Yury Norov <yury.norov@gmail.com>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Diffstat (limited to 'mm/vmstat.c')
| -rw-r--r-- | mm/vmstat.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/vmstat.c b/mm/vmstat.c index b75b1a64b54c..12c771e4d195 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -2042,7 +2042,7 @@ static void __init init_cpu_node_state(void) int node; for_each_online_node(node) { - if (cpumask_weight(cpumask_of_node(node)) > 0) + if (!cpumask_empty(cpumask_of_node(node))) node_set_state(node, N_CPU); } } @@ -2074,7 +2074,7 @@ static int vmstat_cpu_dead(unsigned int cpu) refresh_zone_stat_thresholds(); node_cpus = cpumask_of_node(node); - if (cpumask_weight(node_cpus) > 0) + if (!cpumask_empty(node_cpus)) return 0; node_clear_state(node, N_CPU); |