iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

arch/ia64: replace cpumask_weight with cpumask_empty where appropriate

Browse Source 
setup_arch() 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>
This commit is contained in:
Yury Norov 2022-01-23 10:38:45 -08:00
parent 71c1a517e3
commit b6dad11d9c
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/ia64/kernel/setup.c
View File

@ -572,7 +572,7 @@ setup_arch (char **cmdline_p)
#ifdef CONFIG_ACPI_HOTPLUG_CPU
prefill_possible_map();
#endif
per_cpu_scan_finalize((cpumask_weight(&early_cpu_possible_map) == 0 ?
per_cpu_scan_finalize((cpumask_empty(&early_cpu_possible_map) ?
32 : cpumask_weight(&early_cpu_possible_map)),
additional_cpus > 0 ? additional_cpus : 0);
#endif /* CONFIG_ACPI_NUMA */