[PATCH v2 01/12] KVM: selftests: Add a KVM syscall wrapper for sched_setaffinity()

[Sean Christopherson]

Add and use a KVM wrapper for sched_setaffinity() so that selftests don't
need to manually assert that the syscall succeeded.

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc at google.com>
---
 tools/testing/selftests/kvm/include/kvm_syscalls.h | 1 +
 tools/testing/selftests/kvm/rseq_test.c            | 6 ++----
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/kvm/include/kvm_syscalls.h b/tools/testing/selftests/kvm/include/kvm_syscalls.h
index 5dae6143ddb0..01dca99009c2 100644
--- a/tools/testing/selftests/kvm/include/kvm_syscalls.h
+++ b/tools/testing/selftests/kvm/include/kvm_syscalls.h
@@ -95,6 +95,7 @@ __KVM_SYSCALL_DEFINE(fallocate, 4, int, fd, int, mode, loff_t, offset, loff_t, l
 __KVM_SYSCALL_DEFINE(ftruncate, 2, unsigned int, fd, off_t, length);
 __KVM_SYSCALL_DEFINE(madvise, 3, void *, addr, size_t, length, int, advice);
 __KVM_SYSCALL_DEFINE(sched_getaffinity, 3, pid_t, pid, size_t, cpusetsize, cpu_set_t *, mask);
+__KVM_SYSCALL_DEFINE(sched_setaffinity, 3, pid_t, pid, size_t, cpusetsize, cpu_set_t *, mask);
 
 #define kvm_free_fd(fd)		\
 do {				\
diff --git a/tools/testing/selftests/kvm/rseq_test.c b/tools/testing/selftests/kvm/rseq_test.c
index 557e393c223b..edcaf0fbe20c 100644
--- a/tools/testing/selftests/kvm/rseq_test.c
+++ b/tools/testing/selftests/kvm/rseq_test.c
@@ -75,7 +75,7 @@ static void *migration_worker(void *__rseq_tid)
 {
 	pid_t rseq_tid = (pid_t)(unsigned long)__rseq_tid;
 	cpu_set_t allowed_mask;
-	int r, i, cpu;
+	int i, cpu;
 
 	CPU_ZERO(&allowed_mask);
 
@@ -96,9 +96,7 @@ static void *migration_worker(void *__rseq_tid)
 		 * stable, i.e. while changing affinity is in-progress.
 		 */
 		smp_wmb();
-		r = sched_setaffinity(rseq_tid, sizeof(allowed_mask), &allowed_mask);
-		TEST_ASSERT(!r, "sched_setaffinity failed, errno = %d (%s)",
-			    errno, strerror(errno));
+		kvm_sched_setaffinity(rseq_tid, sizeof(allowed_mask), &allowed_mask);
 		smp_wmb();
 		atomic_inc(&seq_cnt);
 
-- 
2.55.0.508.g3f0d502094-goog