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lib/util/cpuset: add negate and xor

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Change-Id: I8d2fc9d0fcc6cb8b088c307d1520f0b1051c3ef6
Signed-off-by: Tomasz Kulasek <tomaszx.kulasek@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/443518
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
This commit is contained in:
Tomasz Kulasek 2019-02-04 12:07:39 +01:00 committed by Ben Walker
parent 7b0579df17
commit ebce385d61
2 changed files with 36 additions and 0 deletions
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15
include/spdk/cpuset.h
View File

@ -100,6 +100,21 @@ void spdk_cpuset_and(struct spdk_cpuset *dst, const struct spdk_cpuset *src);
*/
void spdk_cpuset_or(struct spdk_cpuset *dst, const struct spdk_cpuset *src);
/**
* Perform XOR operation on two CPU sets. The result is stored in dst.
*
* \param dst First argument of operation. This value also stores the result of operation.
* \param src Second argument of operation.
*/
void spdk_cpuset_xor(struct spdk_cpuset *dst, const struct spdk_cpuset *src);
/**
* Negate all CPUs in CPU set.
*
* \param set CPU set to be negated. This value also stores the result of operation.
*/
void spdk_cpuset_negate(struct spdk_cpuset *set);
/**
* Clear all CPUs in CPU set.
*

21
lib/util/cpuset.c
View File

@ -67,6 +67,16 @@ spdk_cpuset_copy(struct spdk_cpuset *set1, const struct spdk_cpuset *set2)
memcpy(&set1->cpus, &set2->cpus, sizeof(set2->cpus));
}
void
spdk_cpuset_negate(struct spdk_cpuset *set)
{
unsigned int i;
assert(set != NULL);
for (i = 0; i < sizeof(set->cpus); i++) {
set->cpus[i] = ~set->cpus[i];
}
}
void
spdk_cpuset_and(struct spdk_cpuset *set1, const struct spdk_cpuset *set2)
{
@ -89,6 +99,17 @@ spdk_cpuset_or(struct spdk_cpuset *set1, const struct spdk_cpuset *set2)
}
}
void
spdk_cpuset_xor(struct spdk_cpuset *set1, const struct spdk_cpuset *set2)
{
unsigned int i;
assert(set1 != NULL);
assert(set2 != NULL);
for (i = 0; i < sizeof(set2->cpus); i++) {
set1->cpus[i] ^= set2->cpus[i];
}
}
void
spdk_cpuset_zero(struct spdk_cpuset *set)
{