diff options
| author | Yury Norov <yury.norov@gmail.com> | 2022-01-23 10:38:52 -0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2022-01-31 11:21:46 +1100 |
| commit | 1c4cafd11599abdbc53a520f0b6e6799d037eae1 (patch) | |
| tree | 93e7e5d485e9e63877bcacc2f8326a3f0587f082 /kernel/padata.c | |
| parent | 28e9b6d8199a3f124682b143800c2dacdc3d70dd (diff) | |
padata: replace cpumask_weight with cpumask_empty in padata.c
padata_do_parallel() 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>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'kernel/padata.c')
| -rw-r--r-- | kernel/padata.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/padata.c b/kernel/padata.c index 18d3a5c699d8..e5819bb8bd1d 100644 --- a/kernel/padata.c +++ b/kernel/padata.c @@ -181,7 +181,7 @@ int padata_do_parallel(struct padata_shell *ps, goto out; if (!cpumask_test_cpu(*cb_cpu, pd->cpumask.cbcpu)) { - if (!cpumask_weight(pd->cpumask.cbcpu)) + if (cpumask_empty(pd->cpumask.cbcpu)) goto out; /* Select an alternate fallback CPU and notify the caller. */ |