diff options
Diffstat (limited to 'drivers/s390/cio/idset.c')
| -rw-r--r-- | drivers/s390/cio/idset.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/drivers/s390/cio/idset.c b/drivers/s390/cio/idset.c index cf8f24a4b5e..4d10981c7cc 100644 --- a/drivers/s390/cio/idset.c +++ b/drivers/s390/cio/idset.c @@ -78,7 +78,7 @@ static inline int idset_get_first(struct idset *set, int *ssid, int *id) struct idset *idset_sch_new(void) { - return idset_new(__MAX_SSID + 1, __MAX_SUBCHANNEL + 1); + return idset_new(max_ssid + 1, __MAX_SUBCHANNEL + 1); } void idset_sch_add(struct idset *set, struct subchannel_id schid) @@ -110,3 +110,23 @@ int idset_sch_get_first(struct idset *set, struct subchannel_id *schid) } return rc; } + +int idset_is_empty(struct idset *set) +{ + int bitnum; + + bitnum = find_first_bit(set->bitmap, set->num_ssid * set->num_id); + if (bitnum >= set->num_ssid * set->num_id) + return 1; + return 0; +} + +void idset_add_set(struct idset *to, struct idset *from) +{ + unsigned long i, len; + + len = min(__BITOPS_WORDS(to->num_ssid * to->num_id), + __BITOPS_WORDS(from->num_ssid * from->num_id)); + for (i = 0; i < len ; i++) + to->bitmap[i] |= from->bitmap[i]; +} |