From 6e5d7cdde79ab43ca6346512f3cd2b8e3488be76 Mon Sep 17 00:00:00 2001
From: Rohit Gupta <rohit.gupta@eurecom.fr>
Date: Tue, 12 Apr 2016 12:54:15 +0200
Subject: [PATCH] disable CPU affinity for UE and also for case when MAX_CPUS
<=2
---
targets/RT/USER/lte-softmodem.c | 65 ++++++++++++++++++---------------
1 file changed, 36 insertions(+), 29 deletions(-)
diff --git a/targets/RT/USER/lte-softmodem.c b/targets/RT/USER/lte-softmodem.c
index 583be1ccb7..641990aabd 100644
--- a/targets/RT/USER/lte-softmodem.c
+++ b/targets/RT/USER/lte-softmodem.c
@@ -3298,39 +3298,46 @@ int main( int argc, char **argv )
}
#ifndef LOWLATENCY
- cpu_set_t cpuset;
- int s;
- char cpu_affinity[1024];
-
- LOG_I(HW, "Setting the affinity of main function to CPU 0, for device library to use CPU 0 only!\n");
-
- CPU_ZERO(&cpuset);
- CPU_SET(0, &cpuset);
- s = pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t), &cpuset);
- if (s != 0)
+ /* Currently we set affinity for UHD to CPU 0 for eNB only and only if number of CPUS >2 */
+ /* ToDo: Set CPU affinity for UE */
+ if (UE_flag == 0 && get_nprocs() > 2)
{
- perror( "pthread_setaffinity_np");
- exit_fun("Error setting processor affinity");
- }
- /* Check the actual affinity mask assigned to the thread */
+ cpu_set_t cpuset;
+ int s;
+ char cpu_affinity[1024];
- s = pthread_getaffinity_np(pthread_self(), sizeof(cpu_set_t), &cpuset);
- if (s != 0)
- {
- perror( "pthread_getaffinity_np");
- exit_fun("Error getting processor affinity ");
- }
- memset(cpu_affinity, 0 , sizeof(cpu_affinity));
- for (int j = 0; j < CPU_SETSIZE; j++)
- if (CPU_ISSET(j, &cpuset))
- {
- char temp[1024];
- sprintf(temp, " CPU_%d ", j);
- strcat(cpu_affinity, temp);
+ LOG_I(HW, "Setting the affinity of main function to CPU 0, for device library to use CPU 0 only!\n");
+
+ CPU_ZERO(&cpuset);
+ CPU_SET(0, &cpuset);
+
+ s = pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t), &cpuset);
+ if (s != 0)
+ {
+ perror( "pthread_setaffinity_np");
+ exit_fun("Error setting processor affinity");
+ }
+
+ /* Check the actual affinity mask assigned to the thread */
+ s = pthread_getaffinity_np(pthread_self(), sizeof(cpu_set_t), &cpuset);
+ if (s != 0)
+ {
+ perror( "pthread_getaffinity_np");
+ exit_fun("Error getting processor affinity ");
+ }
+ memset(cpu_affinity, 0 , sizeof(cpu_affinity));
+ for (int j = 0; j < CPU_SETSIZE; j++)
+ {
+ if (CPU_ISSET(j, &cpuset))
+ {
+ char temp[1024];
+ sprintf(temp, " CPU_%d ", j);
+ strcat(cpu_affinity, temp);
+ }
+ }
+ LOG_I(HW, "CPU Affinity of main() function is... %s\n", cpu_affinity);
}
-
- LOG_I(HW, "CPU Affinity of main() function is... %s\n", cpu_affinity);
#endif
/* device host type is set*/
--
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