diff options
| author | Robbie King <robking@cisco.com> | 2015-01-14 23:48:22 +0100 |
|---|---|---|
| committer | Maxim Uvarov <maxim.uvarov@linaro.org> | 2015-01-16 17:32:59 +0300 |
| commit | b9c94bc29cd96898308f1a8f5273d69c70270e7f (patch) | |
| tree | 1449517ce2e1b296898a5c6c175027a330b1bb0d | |
| parent | c8906ca2935a10344c256d930fbd90907295b804 (diff) | |
api: cpumask: add odp_cpumask_first
To get the first element in order to be able to traverse a mask.
Signed-off-by: Robbie King <robking@cisco.com>
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
Reviewed-by: Petri Savolainen <petri.savolainen@linaro.org>
Signed-off-by: Maxim Uvarov <maxim.uvarov@linaro.org>
| -rw-r--r-- | platform/linux-generic/include/api/odp_cpumask.h | 7 | ||||
| -rw-r--r-- | platform/linux-generic/odp_cpumask.c | 10 |
2 files changed, 17 insertions, 0 deletions
diff --git a/platform/linux-generic/include/api/odp_cpumask.h b/platform/linux-generic/include/api/odp_cpumask.h index 0090f9abe..cccbb6215 100644 --- a/platform/linux-generic/include/api/odp_cpumask.h +++ b/platform/linux-generic/include/api/odp_cpumask.h @@ -132,6 +132,13 @@ int odp_cpumask_equal(const odp_cpumask_t *mask1, void odp_cpumask_copy(odp_cpumask_t *dest, const odp_cpumask_t *src); /** + * Find first bit set in mask + * + * @return cpu else -1 if no bits set in cpumask + */ +int odp_cpumask_first(const odp_cpumask_t *mask); + +/** * @} */ diff --git a/platform/linux-generic/odp_cpumask.c b/platform/linux-generic/odp_cpumask.c index 6be7f1e8e..a3bb1767a 100644 --- a/platform/linux-generic/odp_cpumask.c +++ b/platform/linux-generic/odp_cpumask.c @@ -175,3 +175,13 @@ void odp_cpumask_copy(odp_cpumask_t *dest, const odp_cpumask_t *src) { memcpy(&dest->set, &src->set, sizeof(src->set)); } + +int odp_cpumask_first(const odp_cpumask_t *mask) +{ + int cpu; + + for (cpu = 0; cpu < CPU_SETSIZE; cpu++) + if (odp_cpumask_isset(mask, cpu)) + return cpu; + return -1; +} |