tail_alloc with precise size of the structure is used now.
* tests/sched_xetattr.c: Eliminate usage of anonymous union type; rename
sched to sched_attr; change type of sched_attr to struct pointer; use
tail_alloc for sched_attr allocation; update printf statements
accrodingly.
---
tests/sched_xetattr.c | 58 ++++++++++++++++++++++++-------------------------
1 file changed, 28 insertions(+), 30 deletions(-)
diff --git a/tests/sched_xetattr.c b/tests/sched_xetattr.c
index b982cca..e85f9bc 100644
--- a/tests/sched_xetattr.c
+++ b/tests/sched_xetattr.c
@@ -37,50 +37,48 @@
int
main(void)
{
- static union {
- struct {
- uint32_t size;
- uint32_t sched_policy;
- uint64_t sched_flags;
- uint32_t sched_nice;
- uint32_t sched_priority;
- uint64_t sched_runtime;
- uint64_t sched_deadline;
- uint64_t sched_period;
- } attr;
- char buf[256];
- } sched;
+ struct {
+ uint32_t size;
+ uint32_t sched_policy;
+ uint64_t sched_flags;
+ uint32_t sched_nice;
+ uint32_t sched_priority;
+ uint64_t sched_runtime;
+ uint64_t sched_deadline;
+ uint64_t sched_period;
+ } *sched_attr = tail_alloc(sizeof(*sched_attr));
- if (syscall(__NR_sched_getattr, 0, &sched, sizeof(sched), 0))
+ if (syscall(__NR_sched_getattr, 0, sched_attr, sizeof(*sched_attr), 0))
perror_msg_and_skip("sched_getattr");
printf("sched_getattr\\(0, \\{size=%u, sched_policy=SCHED_[A-Z]+, "
"sched_flags=%s, sched_nice=%u, sched_priority=%u, "
"sched_runtime=%" PRIu64 ", sched_deadline=%" PRIu64 ", "
- "sched_period=%" PRIu64 "\\}, 256, 0\\) += 0\n",
- sched.attr.size,
- sched.attr.sched_flags ? "SCHED_FLAG_RESET_ON_FORK" : "0",
- sched.attr.sched_nice,
- sched.attr.sched_priority,
- sched.attr.sched_runtime,
- sched.attr.sched_deadline,
- sched.attr.sched_period);
+ "sched_period=%" PRIu64 "\\}, %zu, 0\\) += 0\n",
+ sched_attr->size,
+ sched_attr->sched_flags ? "SCHED_FLAG_RESET_ON_FORK" : "0",
+ sched_attr->sched_nice,
+ sched_attr->sched_priority,
+ sched_attr->sched_runtime,
+ sched_attr->sched_deadline,
+ sched_attr->sched_period,
+ sizeof(*sched_attr));
- sched.attr.sched_flags |= 1;
- if (syscall(__NR_sched_setattr, 0, &sched, 0))
+ sched_attr->sched_flags |= 1;
+ if (syscall(__NR_sched_setattr, 0, sched_attr, 0))
perror_msg_and_skip("sched_setattr");
printf("sched_setattr\\(0, \\{size=%u, sched_policy=SCHED_[A-Z]+, "
"sched_flags=%s, sched_nice=%u, sched_priority=%u, "
"sched_runtime=%" PRIu64 ", sched_deadline=%" PRIu64 ", "
"sched_period=%" PRIu64 "\\}, 0\\) += 0\n",
- sched.attr.size,
+ sched_attr->size,
"SCHED_FLAG_RESET_ON_FORK",
- sched.attr.sched_nice,
- sched.attr.sched_priority,
- sched.attr.sched_runtime,
- sched.attr.sched_deadline,
- sched.attr.sched_period);
+ sched_attr->sched_nice,
+ sched_attr->sched_priority,
+ sched_attr->sched_runtime,
+ sched_attr->sched_deadline,
+ sched_attr->sched_period);
return 0;
}
--
1.7.10.4
------------------------------------------------------------------------------
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