[dpdk-dev] [PATCH v2 3/4] examples/performance-thread: fix FreeBSD compilation
Bruce Richardson
bruce.richardson at intel.com
Fri Apr 21 15:50:23 CEST 2017
This set of sample apps did not compile on FreeBSD due to use of a number
of Linux/glibc-specific APIs, or APIs which existed in different headers
on FreeBSD. Specifically, the following APIs has problems:
* sched_getcpu() is a glibc extension, so use rte_lcore_id() on BSD
* pthread_yield() returns int on Linux, but void on FreeBSD, so
we have to create two slightly different copies of the function.
* the type for managing cpu sets is cpuset_t on FreeBSD rather than
cpu_set_t as on Linux, so use rte_cpuset_t from rte_lcore.h.
* APIs for managing cpu affinity are in pthread_np.h on FreeBSD, rather
than in pthread.h, also fixed by including rte_lcore.h
Fixes: 433ba6228f9a ("examples/performance-thread: add pthread_shim app")
Fixes: d48415e1fee3 ("examples/performance-thread: add l3fwd-thread app")
CC: stable at dpdk.org
Signed-off-by: Bruce Richardson <bruce.richardson at intel.com>
---
V2: use rte_lcore.h to fix cpu_set_t type and pthread_np.h inclusion,
rather than ifdefs in the app itself.
---
examples/performance-thread/l3fwd-thread/main.c | 4 ++++
examples/performance-thread/pthread_shim/main.c | 8 ++++++--
.../performance-thread/pthread_shim/pthread_shim.c | 23 ++++++++++++++++------
.../performance-thread/pthread_shim/pthread_shim.h | 3 ++-
4 files changed, 29 insertions(+), 9 deletions(-)
diff --git a/examples/performance-thread/l3fwd-thread/main.c b/examples/performance-thread/l3fwd-thread/main.c
index f6154ac2a..2d98473eb 100644
--- a/examples/performance-thread/l3fwd-thread/main.c
+++ b/examples/performance-thread/l3fwd-thread/main.c
@@ -90,6 +90,10 @@
#define APP_LOOKUP_METHOD APP_LOOKUP_LPM
#endif
+#ifndef __GLIBC__ /* sched_getcpu() is glibc specific */
+#define sched_getcpu() rte_lcore_id()
+#endif
+
static int
check_ptype(int portid)
{
diff --git a/examples/performance-thread/pthread_shim/main.c b/examples/performance-thread/pthread_shim/main.c
index f03572181..850b009d3 100644
--- a/examples/performance-thread/pthread_shim/main.c
+++ b/examples/performance-thread/pthread_shim/main.c
@@ -59,6 +59,10 @@
#define DEBUG_APP 0
#define HELLOW_WORLD_MAX_LTHREADS 10
+#ifndef __GLIBC__ /* sched_getcpu() is glibc-specific */
+#define sched_getcpu() rte_lcore_id()
+#endif
+
__thread int print_count;
__thread pthread_mutex_t print_lock;
@@ -175,12 +179,12 @@ static void initial_lthread(void *args __attribute__((unused)))
* use an attribute to pass the desired lcore
*/
pthread_attr_t attr;
- cpu_set_t cpuset;
+ rte_cpuset_t cpuset;
CPU_ZERO(&cpuset);
CPU_SET(lcore, &cpuset);
pthread_attr_init(&attr);
- pthread_attr_setaffinity_np(&attr, sizeof(cpu_set_t), &cpuset);
+ pthread_attr_setaffinity_np(&attr, sizeof(rte_cpuset_t), &cpuset);
/* create the thread */
pthread_create(&tid[i], &attr, helloworld_pthread, (void *) i);
diff --git a/examples/performance-thread/pthread_shim/pthread_shim.c b/examples/performance-thread/pthread_shim/pthread_shim.c
index 0d6100c90..71673119a 100644
--- a/examples/performance-thread/pthread_shim/pthread_shim.c
+++ b/examples/performance-thread/pthread_shim/pthread_shim.c
@@ -159,7 +159,7 @@ int (*f_pthread_setschedparam)
int (*f_pthread_yield)
(void);
int (*f_pthread_setaffinity_np)
- (pthread_t thread, size_t cpusetsize, const cpu_set_t *cpuset);
+ (pthread_t thread, size_t cpusetsize, const rte_cpuset_t *cpuset);
int (*f_nanosleep)
(const struct timespec *req, struct timespec *rem);
} _sys_pthread_funcs = {
@@ -390,11 +390,11 @@ pthread_create(pthread_t *__restrict tid,
if (attr != NULL) {
/* determine CPU being requested */
- cpu_set_t cpuset;
+ rte_cpuset_t cpuset;
CPU_ZERO(&cpuset);
pthread_attr_getaffinity_np(attr,
- sizeof(cpu_set_t),
+ sizeof(rte_cpuset_t),
&cpuset);
if (CPU_COUNT(&cpuset) != 1)
@@ -576,15 +576,26 @@ int pthread_rwlock_wrlock(pthread_rwlock_t *a)
return _sys_pthread_funcs.f_pthread_rwlock_wrlock(a);
}
-int pthread_yield(void)
+#ifdef RTE_EXEC_ENV_LINUXAPP
+int
+pthread_yield(void)
{
if (override) {
lthread_yield();
return 0;
}
return _sys_pthread_funcs.f_pthread_yield();
-
}
+#else
+void
+pthread_yield(void)
+{
+ if (override)
+ lthread_yield();
+ else
+ _sys_pthread_funcs.f_pthread_yield();
+}
+#endif
pthread_t pthread_self(void)
{
@@ -686,7 +697,7 @@ int nanosleep(const struct timespec *req, struct timespec *rem)
int
pthread_setaffinity_np(pthread_t thread, size_t cpusetsize,
- const cpu_set_t *cpuset)
+ const rte_cpuset_t *cpuset)
{
if (override) {
/* we only allow affinity with a single CPU */
diff --git a/examples/performance-thread/pthread_shim/pthread_shim.h b/examples/performance-thread/pthread_shim/pthread_shim.h
index 78bbb5ac0..10f878940 100644
--- a/examples/performance-thread/pthread_shim/pthread_shim.h
+++ b/examples/performance-thread/pthread_shim/pthread_shim.h
@@ -33,7 +33,8 @@
#ifndef _PTHREAD_SHIM_H_
#define _PTHREAD_SHIM_H_
-#include <pthread.h>
+
+#include <rte_lcore.h>
/*
* This pthread shim is an example that demonstrates how legacy code
--
2.11.0
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