cpumask_next_and() does cpumask_next() src1 in a loop and tests if found cpu is alsop present in src2. remove that loop and perform cpumask_and() of src1 and src2 first and use to find cpumask_next() intead.
Signed-off-by: Sergey Senozhatsky <[email protected]> --- lib/cpumask.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/lib/cpumask.c b/lib/cpumask.c index b6513a9..5ab1553 100644 --- a/lib/cpumask.c +++ b/lib/cpumask.c @@ -37,10 +37,11 @@ EXPORT_SYMBOL(__next_cpu_nr); int cpumask_next_and(int n, const struct cpumask *src1p, const struct cpumask *src2p) { - while ((n = cpumask_next(n, src1p)) < nr_cpu_ids) - if (cpumask_test_cpu(n, src2p)) - break; - return n; + struct cpumask tmp; + + if (cpumask_and(&tmp, src1p, src2p)) + return cpumask_next(n, &tmp); + return nr_cpu_ids; } EXPORT_SYMBOL(cpumask_next_and); -- 2.2.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
