From: Robbie King <[email protected]> Finding the next element to traverse a mask.
Signed-off-by: Robbie King <[email protected]> Signed-off-by: Anders Roxell <[email protected]> --- platform/linux-generic/include/api/odp_cpumask.h | 21 +++++++++++++++++++++ platform/linux-generic/odp_cpumask.c | 8 ++++++++ 2 files changed, 29 insertions(+) diff --git a/platform/linux-generic/include/api/odp_cpumask.h b/platform/linux-generic/include/api/odp_cpumask.h index a81bca7..ebff9b0 100644 --- a/platform/linux-generic/include/api/odp_cpumask.h +++ b/platform/linux-generic/include/api/odp_cpumask.h @@ -146,6 +146,27 @@ int odp_cpumask_first(const odp_cpumask_t *mask); int odp_cpumask_last(const odp_cpumask_t *mask); /** + * Find next cpu in mask + * + * Finds the next cpu in the CPU mask, starting at the cpu passed. + * Use with odp_cpumask_first to traverse a CPU mask, i.e. + * + * int cpu = odp_cpumask_first(&mask); + * while (0 <= cpu) { + * ... + * ... + * cpu = odp_cpumask_next(&mask, cpu); + * } + * + * @param mask CPU mask to find next cpu in + * @param cpu CPU to start from + * @return cpu found else -1 + * + * @see odp_cpumask_first() + */ +int odp_cpumask_next(const odp_cpumask_t *mask, int cpu); + +/** * @} */ diff --git a/platform/linux-generic/odp_cpumask.c b/platform/linux-generic/odp_cpumask.c index 3930264..d9931b4 100644 --- a/platform/linux-generic/odp_cpumask.c +++ b/platform/linux-generic/odp_cpumask.c @@ -185,3 +185,11 @@ int odp_cpumask_last(const odp_cpumask_t *mask) return cpu; return -1; } + +int odp_cpumask_next(const odp_cpumask_t *mask, int cpu) +{ + for (cpu += 1; cpu < CPU_SETSIZE; cpu++) + if (odp_cpumask_isset(mask, cpu)) + return cpu; + return -1; +} -- 2.1.4 _______________________________________________ lng-odp mailing list [email protected] http://lists.linaro.org/mailman/listinfo/lng-odp
