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[RHEL8][CONTAINER] Runtime check when creating pThreads

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It looks like :
  - when running on a Fedora-host
  - with generic kernel
  - in a container
  - even in privileged mode

That is not enough and priority/schedule settings is not allowed.

So at runtime, we check and in case, we don't set up priorities.

Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>
This commit is contained in:
Raphael Defosseux
2021-05-25 14:41:30 +02:00
parent c19ba39eaa
commit aa6b36a60f
4 changed files with 125 additions and 44 deletions
Download Patch File Download Diff File Expand all files Collapse all files
targets/RT/USER/lte-ue.c
+16 -6
View File
@@ -32,6 +32,7 @@
#include "lte-softmodem.h"
#include "rt_wrapper.h"
#include "system.h"
#include "LAYER2/MAC/mac.h"
#include "RRC/LTE/rrc_extern.h"
@@ -230,14 +231,23 @@ void init_thread(int sched_runtime,
}
#else
int settingPriority = 1;
if (CPU_COUNT(cpuset) > 0)
AssertFatal( 0 == pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t), cpuset), "");
if (checkIfFedoraDistribution())
if (checkIfGenericKernelOnFedora())
if (checkIfInsideContainer())
settingPriority = 0;
if (settingPriority) {
if (CPU_COUNT(cpuset) > 0)
AssertFatal( 0 == pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t), cpuset), "");
struct sched_param sp;
sp.sched_priority = sched_fifo;
AssertFatal(pthread_setschedparam(pthread_self(),SCHED_FIFO,&sp)==0,
"Can't set thread priority, Are you root?\n");
}
struct sched_param sp;
sp.sched_priority = sched_fifo;
AssertFatal(pthread_setschedparam(pthread_self(),SCHED_FIFO,&sp)==0,
"Can't set thread priority, Are you root?\n");
/* Check the actual affinity mask assigned to the thread */
cpu_set_t *cset=CPU_ALLOC(CPU_SETSIZE);
targets/RT/USER/rt_wrapper.c
+31 -22
View File
@@ -43,6 +43,7 @@
#include <getopt.h>
#include <sys/sysinfo.h>
#include "rt_wrapper.h"
#include "system.h"
#include <errno.h>
#include <common/utils/msc/msc.h>
@@ -294,6 +295,7 @@ void thread_top_init(char *thread_name,
struct sched_param sparam;
char cpu_affinity[1024];
cpu_set_t cpuset;
int settingPriority = 1;
/* Set affinity mask to include CPUs 2 to MAX_CPUS */
/* CPU 0 is reserved for UHD threads */
@@ -340,30 +342,37 @@ void thread_top_init(char *thread_name,
}
}
memset(&sparam, 0, sizeof(sparam));
sparam.sched_priority = sched_get_priority_max(SCHED_FIFO);
policy = SCHED_FIFO ;
s = pthread_setschedparam(pthread_self(), policy, &sparam);
if (s != 0) {
perror("pthread_setschedparam : ");
exit_fun("Error setting thread priority");
}
s = pthread_getschedparam(pthread_self(), &policy, &sparam);
if (s != 0) {
perror("pthread_getschedparam : ");
exit_fun("Error getting thread priority");
}
if (checkIfFedoraDistribution())
if (checkIfGenericKernelOnFedora())
if (checkIfInsideContainer())
settingPriority = 0;
pthread_setname_np(pthread_self(), thread_name);
if (settingPriority) {
memset(&sparam, 0, sizeof(sparam));
sparam.sched_priority = sched_get_priority_max(SCHED_FIFO);
policy = SCHED_FIFO;
s = pthread_setschedparam(pthread_self(), policy, &sparam);
if (s != 0) {
perror("pthread_setschedparam : ");
exit_fun("Error setting thread priority");
}
s = pthread_getschedparam(pthread_self(), &policy, &sparam);
if (s != 0) {
perror("pthread_getschedparam : ");
exit_fun("Error getting thread priority");
}
LOG_I(HW, "[SCHED][eNB] %s started on CPU %d, sched_policy = %s , priority = %d, CPU Affinity=%s \n",thread_name,sched_getcpu(),
(policy == SCHED_FIFO) ? "SCHED_FIFO" :
(policy == SCHED_RR) ? "SCHED_RR" :
(policy == SCHED_OTHER) ? "SCHED_OTHER" :
"???",
sparam.sched_priority, cpu_affinity );
pthread_setname_np(pthread_self(), thread_name);
LOG_I(HW, "[SCHED][eNB] %s started on CPU %d, sched_policy = %s , priority = %d, CPU Affinity=%s \n",thread_name,sched_getcpu(),
(policy == SCHED_FIFO) ? "SCHED_FIFO" :
(policy == SCHED_RR) ? "SCHED_RR" :
(policy == SCHED_OTHER) ? "SCHED_OTHER" :
"???",
sparam.sched_priority, cpu_affinity );
}
#endif //LOW_LATENCY