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Remove assembler code

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Replace assembler code with C equivalent and slightly simplify
logic searching for first free core.

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
This commit is contained in:
Robert Baldyga 2018-12-13 07:33:16 +01:00
parent a643614fd6
commit 6d81924891
1 changed files with 12 additions and 12 deletions
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24
src/mngt/ocf_mngt_core.c
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@ -190,33 +190,34 @@ error_out:
static unsigned long _ffz(unsigned long word)
{
asm("rep; bsf %1,%0"
: "=r" (word)
: "r" (~word));
return word;
int i;
for (i = 0; i < sizeof(word)*8 && (word & 1); i++)
word <<= 1;
return i;
}
static unsigned long _ocf_mngt_find_first_free_core(const unsigned long *bitmap,
unsigned long size)
static unsigned long _ocf_mngt_find_first_free_core(const unsigned long *bitmap)
{
unsigned long i;
unsigned long ret = size;
unsigned long ret = OCF_CORE_MAX;
/* check core 0 availability */
bool zero_core_free = !(*bitmap & 0x1UL);
/* check if any core id is free except 0 */
for (i = 0; i * sizeof(unsigned long) * 8 < size; i++) {
for (i = 0; i * sizeof(unsigned long) * 8 < OCF_CORE_MAX; i++) {
unsigned long long ignore_mask = (i == 0) ? 1UL : 0UL;
if (~(bitmap[i] | ignore_mask)) {
ret = MIN(size, i * sizeof(unsigned long) * 8 +
ret = MIN(OCF_CORE_MAX, i * sizeof(unsigned long) * 8 +
_ffz(bitmap[i] | ignore_mask));
break;
}
}
/* return 0 only if no other core is free */
if (ret == size && zero_core_free)
if (ret == OCF_CORE_MAX && zero_core_free)
return 0;
return ret;
@ -287,8 +288,7 @@ static int __ocf_mngt_find_core_id(ocf_cache_t cache,
/* Core is unspecified */
cfg->core_id = _ocf_mngt_find_first_free_core(
cache->conf_meta->valid_object_bitmap,
OCF_CORE_MAX);
cache->conf_meta->valid_object_bitmap);
/* no need to check if find_first_zero_bit failed and
* *core_id == MAX_CORE_OBJS_PER_CACHE, as above there is check
* for core_count being greater or equal to