Call sched_setscheduler

cmake_targets/.gitignore

@@ -0,0 +1,5 @@
+/.ue.nvram0
+/.ue_emm.nvram0
+/.usim.nvram0
+/nvram
+/usim

targets/RT/USER/lte-softmodem.c

@@ -511,6 +511,14 @@ static  void wait_nfapi_init(char *thread_name) {
 
 int main ( int argc, char **argv )
 {
+  struct sched_param param = {
+    .sched_priority = sched_get_priority_max(SCHED_RR)
+  };
+  if (sched_setscheduler( 0, SCHED_RR, &param ) == -1 )
+    fprintf(stderr,"error setting scheduler ... are you root?\n");
+  else
+    fprintf(stderr,"selected rt scheduler\n");
+
   int i;
   int CC_id = 0;
   int ru_id;

targets/RT/USER/lte-ue.c

@@ -1038,6 +1038,7 @@ static void *UE_phy_stub_standalone_pnf_task(void *arg)
   int num_lone = 0;
   int last_sfn_sf = -1;
 
+  uint64_t last_subframe_start = clock_usec();
   while (!oai_exit) {
     bool sent_any = false;
     int sfn_sf = current_sfn_sf;
@@ -1045,6 +1046,12 @@ static void *UE_phy_stub_standalone_pnf_task(void *arg)
       usleep(100);
       continue;
     }
+
+    uint64_t subframe_start = clock_usec();
+    LOG_I(MAC, "subframe elapsed %" PRIu64 "usec\n",
+          subframe_start - last_subframe_start);
+    last_subframe_start = subframe_start;
+
     last_sfn_sf = sfn_sf;
     proc->subframe_rx = NFAPI_SFNSF2SF(sfn_sf);
     proc->frame_rx = NFAPI_SFNSF2SFN(sfn_sf);

targets/RT/USER/lte-uesoftmodem.c

@@ -543,6 +543,14 @@ void init_pdcp(void) {
 }
 
 int main( int argc, char **argv ) {
+  struct sched_param param = {
+    .sched_priority = sched_get_priority_max(SCHED_RR)
+  };
+  if (sched_setscheduler( 0, SCHED_RR, &param ) == -1 )
+    fprintf(stderr,"error setting scheduler ... are you root?\n");
+  else
+    fprintf(stderr,"selected rt scheduler\n");
+
   int CC_id;
   uint8_t  abstraction_flag=0;
 #ifdef UESIM_EXPANSION