GPUSync RTSS12 liblitmuswip-gpu-rtss12

2 files changed, 81 insertions, 0 deletions

diff --git a/src/litmus.c b/src/litmus.c
index d3cc6bb..4f404e2 100644
--- a/src/litmus.c
+++ b/src/litmus.c
@@ -100,3 +100,74 @@ void exit_litmus(void)
 {
         /* nothing to do in current version */
 }
+
+int open_kfmlp_gpu_sem(int fd, int name, int num_gpus, int gpu_offset, int num_simult_users, int affinity_aware)
+{
+        int lock_od;
+        int affinity_od;
+        int num_replicas;
+        struct gpu_affinity_observer_args aff_args;
+        int aff_type;
+        
+        // number of GPU tokens
+        num_replicas = num_gpus * num_simult_users;
+
+        // create the GPU token lock
+        lock_od = open_kfmlp_sem(fd, name, (void*)&num_replicas);
+        if(lock_od < 0) {
+                perror("open_kfmlp_sem");
+                return -1;
+        }
+        
+        // create the affinity method to use.
+        // "no affinity" -> KFMLP_SIMPLE_GPU_AFF_OBS
+        aff_args.obs.lock_od = lock_od;
+        aff_args.replica_to_gpu_offset = gpu_offset;
+        aff_args.nr_simult_users = num_simult_users;
+        
+        aff_type = (affinity_aware) ? KFMLP_GPU_AFF_OBS : KFMLP_SIMPLE_GPU_AFF_OBS;
+        affinity_od = od_openx(fd, aff_type, name+1, &aff_args);
+        if(affinity_od < 0) {
+                perror("open_kfmlp_aff");
+                return -1;
+        }       
+        
+        return lock_od;
+}
+
+
+
+int open_ikglp_gpu_sem(int fd, int name, int num_gpus, int gpu_offset, int num_simult_users, int affinity_aware, int relax_max_fifo_len)
+{
+        int lock_od;
+        int affinity_od;
+        int num_replicas;
+        struct gpu_affinity_observer_args aff_args;
+        int aff_type;
+
+        // number of GPU tokens
+        num_replicas = num_gpus * num_simult_users;
+        
+        // create the GPU token lock
+        lock_od = open_ikglp_sem(fd, name, (void*)&num_replicas);
+        if(lock_od < 0) {
+                perror("open_ikglp_sem");
+                return -1;
+        }
+        
+        // create the affinity method to use.
+        // "no affinity" -> KFMLP_SIMPLE_GPU_AFF_OBS
+        aff_args.obs.lock_od = lock_od;
+        aff_args.replica_to_gpu_offset = gpu_offset;
+        aff_args.nr_simult_users = num_simult_users;
+        aff_args.relaxed_rules = (relax_max_fifo_len) ? 1 : 0;
+        
+        aff_type = (affinity_aware) ? IKGLP_GPU_AFF_OBS : IKGLP_SIMPLE_GPU_AFF_OBS;
+        affinity_od = od_openx(fd, aff_type, name+1, &aff_args);
+        if(affinity_od < 0) {
+                perror("open_ikglp_aff");
+                return -1;
+        }       
+        
+        return lock_od;
+}
diff --git a/src/syscalls.c b/src/syscalls.c
index e0ce941..97d1ebd 100644
--- a/src/syscalls.c
+++ b/src/syscalls.c
@@ -96,3 +96,13 @@ int null_call(cycles_t *timestamp)
 {
         return syscall(__NR_null_call, timestamp);
 }
+
+int register_nv_device(int nv_device_id)
+{
+        return syscall(__NR_register_nv_device, nv_device_id, 1);
+}
+
+int unregister_nv_device(int nv_device_id)
+{
+        return syscall(__NR_register_nv_device, nv_device_id, 0);
+}