From d836650d41fc813389ab078888cc4fc7a73d213a Mon Sep 17 00:00:00 2001
From: Michael Cook <michael@episyscience.com>
Date: Sat, 27 Jun 2020 14:24:56 -0400
Subject: [PATCH] Call sched_setscheduler

---
 cmake_targets/.gitignore          | 5 +++++
 targets/RT/USER/lte-softmodem.c   | 8 ++++++++
 targets/RT/USER/lte-ue.c          | 7 +++++++
 targets/RT/USER/lte-uesoftmodem.c | 8 ++++++++
 4 files changed, 28 insertions(+)
 create mode 100644 cmake_targets/.gitignore

diff --git a/cmake_targets/.gitignore b/cmake_targets/.gitignore
new file mode 100644
index 0000000000..d637630bca
--- /dev/null
+++ b/cmake_targets/.gitignore
@@ -0,0 +1,5 @@
+/.ue.nvram0
+/.ue_emm.nvram0
+/.usim.nvram0
+/nvram
+/usim
diff --git a/targets/RT/USER/lte-softmodem.c b/targets/RT/USER/lte-softmodem.c
index d8c5e25593..ae470988be 100644
--- a/targets/RT/USER/lte-softmodem.c
+++ b/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;
diff --git a/targets/RT/USER/lte-ue.c b/targets/RT/USER/lte-ue.c
index 9a322b3ff5..2a49963a06 100644
--- a/targets/RT/USER/lte-ue.c
+++ b/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);
diff --git a/targets/RT/USER/lte-uesoftmodem.c b/targets/RT/USER/lte-uesoftmodem.c
index 7530582df1..39bdef2fad 100644
--- a/targets/RT/USER/lte-uesoftmodem.c
+++ b/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