[dpdk-dev] [PATCH v2] Move common functions in eal_thread.c

[Ravi Kerur <rkerur@gmail.com>]

v2:
   > Remove un-needed header file eal_private.h from freeBSD
     eal_thread.c after code movement.

v1:
Changes include
   > Moving common functions in eal_thread.c in
     linuxapp and bsdapp into common/eal_common_thread.c file.
   > Rearrange eal_common_thread.c compilation in Makefile
     for ABI.

Compiled successfully for following targets
   > x86_64-native-linuxapp-clang
   > x86_64-native-linuxapp-gcc
   > x86_x32-native-linuxapp-gcc
   > i686-native-linuxapp-gcc
   > x86_64-native-bsdapp-clang
   > x86_64-native-bsdapp-gcc

Tested on
   > Ubuntu 14.04, testpmd functionality
   > FreeBSD 10.1, testpmd functionality

Signed-off-by: Ravi Kerur <rkerur@gmail.com>
---
 lib/librte_eal/bsdapp/eal/Makefile        |   3 +-
 lib/librte_eal/bsdapp/eal/eal_thread.c    | 153 ------------------------------
 lib/librte_eal/common/eal_common_thread.c | 147 +++++++++++++++++++++++++++-
 lib/librte_eal/linuxapp/eal/Makefile      |   3 +-
 lib/librte_eal/linuxapp/eal/eal_thread.c  | 153 ------------------------------
 5 files changed, 150 insertions(+), 309 deletions(-)

diff --git a/lib/librte_eal/bsdapp/eal/Makefile b/lib/librte_eal/bsdapp/eal/Makefile
index a969435..93d76bb 100644
--- a/lib/librte_eal/bsdapp/eal/Makefile
+++ b/lib/librte_eal/bsdapp/eal/Makefile
@@ -51,6 +51,7 @@ SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) := eal.c
 SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += eal_memory.c
 SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += eal_hugepage_info.c
 SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += eal_thread.c
+SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += eal_common_thread.c
 SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += eal_log.c
 SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += eal_pci.c
 SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += eal_debug.c
@@ -76,7 +77,6 @@ SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += eal_common_hexdump.c
 SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += eal_common_devargs.c
 SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += eal_common_dev.c
 SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += eal_common_options.c
-SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += eal_common_thread.c
 SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += rte_malloc.c
 SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += malloc_elem.c
 SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += malloc_heap.c
@@ -90,6 +90,7 @@ CFLAGS_eal_common_log.o := -D_GNU_SOURCE
 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12603
 ifeq ($(CONFIG_RTE_TOOLCHAIN_GCC),y)
 CFLAGS_eal_thread.o += -Wno-return-type
+CFLAGS_eal_common_thread.o += -Wno-return-type
 CFLAGS_eal_hpet.o += -Wno-return-type
 endif
 
diff --git a/lib/librte_eal/bsdapp/eal/eal_thread.c b/lib/librte_eal/bsdapp/eal/eal_thread.c
index 9a03437..4036d21 100644
--- a/lib/librte_eal/bsdapp/eal/eal_thread.c
+++ b/lib/librte_eal/bsdapp/eal/eal_thread.c
@@ -35,163 +35,10 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdint.h>
-#include <unistd.h>
-#include <sched.h>
-#include <pthread_np.h>
-#include <sys/queue.h>
 #include <sys/thr.h>
 
-#include <rte_debug.h>
-#include <rte_atomic.h>
-#include <rte_launch.h>
-#include <rte_log.h>
-#include <rte_memory.h>
-#include <rte_memzone.h>
-#include <rte_per_lcore.h>
-#include <rte_eal.h>
-#include <rte_per_lcore.h>
-#include <rte_lcore.h>
-
-#include "eal_private.h"
 #include "eal_thread.h"
 
-RTE_DEFINE_PER_LCORE(unsigned, _lcore_id) = LCORE_ID_ANY;
-RTE_DEFINE_PER_LCORE(unsigned, _socket_id) = (unsigned)SOCKET_ID_ANY;
-RTE_DEFINE_PER_LCORE(rte_cpuset_t, _cpuset);
-
-/*
- * Send a message to a slave lcore identified by slave_id to call a
- * function f with argument arg. Once the execution is done, the
- * remote lcore switch in FINISHED state.
- */
-int
-rte_eal_remote_launch(int (*f)(void *), void *arg, unsigned slave_id)
-{
-	int n;
-	char c = 0;
-	int m2s = lcore_config[slave_id].pipe_master2slave[1];
-	int s2m = lcore_config[slave_id].pipe_slave2master[0];
-
-	if (lcore_config[slave_id].state != WAIT)
-		return -EBUSY;
-
-	lcore_config[slave_id].f = f;
-	lcore_config[slave_id].arg = arg;
-
-	/* send message */
-	n = 0;
-	while (n == 0 || (n < 0 && errno == EINTR))
-		n = write(m2s, &c, 1);
-	if (n < 0)
-		rte_panic("cannot write on configuration pipe\n");
-
-	/* wait ack */
-	do {
-		n = read(s2m, &c, 1);
-	} while (n < 0 && errno == EINTR);
-
-	if (n <= 0)
-		rte_panic("cannot read on configuration pipe\n");
-
-	return 0;
-}
-
-/* set affinity for current thread */
-static int
-eal_thread_set_affinity(void)
-{
-	unsigned lcore_id = rte_lcore_id();
-
-	/* acquire system unique id  */
-	rte_gettid();
-
-	/* update EAL thread core affinity */
-	return rte_thread_set_affinity(&lcore_config[lcore_id].cpuset);
-}
-
-void eal_thread_init_master(unsigned lcore_id)
-{
-	/* set the lcore ID in per-lcore memory area */
-	RTE_PER_LCORE(_lcore_id) = lcore_id;
-
-	/* set CPU affinity */
-	if (eal_thread_set_affinity() < 0)
-		rte_panic("cannot set affinity\n");
-}
-
-/* main loop of threads */
-__attribute__((noreturn)) void *
-eal_thread_loop(__attribute__((unused)) void *arg)
-{
-	char c;
-	int n, ret;
-	unsigned lcore_id;
-	pthread_t thread_id;
-	int m2s, s2m;
-	char cpuset[RTE_CPU_AFFINITY_STR_LEN];
-
-	thread_id = pthread_self();
-
-	/* retrieve our lcore_id from the configuration structure */
-	RTE_LCORE_FOREACH_SLAVE(lcore_id) {
-		if (thread_id == lcore_config[lcore_id].thread_id)
-			break;
-	}
-	if (lcore_id == RTE_MAX_LCORE)
-		rte_panic("cannot retrieve lcore id\n");
-
-	m2s = lcore_config[lcore_id].pipe_master2slave[0];
-	s2m = lcore_config[lcore_id].pipe_slave2master[1];
-
-	/* set the lcore ID in per-lcore memory area */
-	RTE_PER_LCORE(_lcore_id) = lcore_id;
-
-	/* set CPU affinity */
-	if (eal_thread_set_affinity() < 0)
-		rte_panic("cannot set affinity\n");
-
-	ret = eal_thread_dump_affinity(cpuset, RTE_CPU_AFFINITY_STR_LEN);
-
-	RTE_LOG(DEBUG, EAL, "lcore %u is ready (tid=%p;cpuset=[%s%s])\n",
-		lcore_id, thread_id, cpuset, ret == 0 ? "" : "...");
-
-	/* read on our pipe to get commands */
-	while (1) {
-		void *fct_arg;
-
-		/* wait command */
-		do {
-			n = read(m2s, &c, 1);
-		} while (n < 0 && errno == EINTR);
-
-		if (n <= 0)
-			rte_panic("cannot read on configuration pipe\n");
-
-		lcore_config[lcore_id].state = RUNNING;
-
-		/* send ack */
-		n = 0;
-		while (n == 0 || (n < 0 && errno == EINTR))
-			n = write(s2m, &c, 1);
-		if (n < 0)
-			rte_panic("cannot write on configuration pipe\n");
-
-		if (lcore_config[lcore_id].f == NULL)
-			rte_panic("NULL function pointer\n");
-
-		/* call the function and store the return value */
-		fct_arg = lcore_config[lcore_id].arg;
-		ret = lcore_config[lcore_id].f(fct_arg);
-		lcore_config[lcore_id].ret = ret;
-		rte_wmb();
-		lcore_config[lcore_id].state = FINISHED;
-	}
-
-	/* never reached */
-	/* pthread_exit(NULL); */
-	/* return NULL; */
-}
-
 /* require calling thread tid by gettid() */
 int rte_sys_gettid(void)
 {
diff --git a/lib/librte_eal/common/eal_common_thread.c b/lib/librte_eal/common/eal_common_thread.c
index 2405e93..5e55401 100644
--- a/lib/librte_eal/common/eal_common_thread.c
+++ b/lib/librte_eal/common/eal_common_thread.c
@@ -31,11 +31,12 @@
  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdint.h>
 #include <unistd.h>
-#include <pthread.h>
+#include <sys/queue.h>
 #include <sched.h>
 #include <assert.h>
 #include <string.h>
@@ -43,10 +44,21 @@
 #include <rte_lcore.h>
 #include <rte_memory.h>
 #include <rte_log.h>
+#include <rte_debug.h>
+#include <rte_atomic.h>
+#include <rte_launch.h>
+#include <rte_memzone.h>
+#include <rte_per_lcore.h>
+#include <rte_eal.h>
+#include <rte_per_lcore.h>
 
+#include "eal_private.h"
 #include "eal_thread.h"
 
 RTE_DECLARE_PER_LCORE(unsigned , _socket_id);
+RTE_DEFINE_PER_LCORE(unsigned, _lcore_id) = LCORE_ID_ANY;
+RTE_DEFINE_PER_LCORE(unsigned, _socket_id) = (unsigned)SOCKET_ID_ANY;
+RTE_DEFINE_PER_LCORE(rte_cpuset_t, _cpuset);
 
 unsigned rte_socket_id(void)
 {
@@ -155,3 +167,136 @@ exit:
 
 	return ret;
 }
+
+/*
+ * Send a message to a slave lcore identified by slave_id to call a
+ * function f with argument arg. Once the execution is done, the
+ * remote lcore switch in FINISHED state.
+ */
+int
+rte_eal_remote_launch(int (*f)(void *), void *arg, unsigned slave_id)
+{
+	int n;
+	char c = 0;
+	int m2s = lcore_config[slave_id].pipe_master2slave[1];
+	int s2m = lcore_config[slave_id].pipe_slave2master[0];
+
+	if (lcore_config[slave_id].state != WAIT)
+		return -EBUSY;
+
+	lcore_config[slave_id].f = f;
+	lcore_config[slave_id].arg = arg;
+
+	/* send message */
+	n = 0;
+	while (n == 0 || (n < 0 && errno == EINTR))
+		n = write(m2s, &c, 1);
+	if (n < 0)
+		rte_panic("cannot write on configuration pipe\n");
+
+	/* wait ack */
+	do {
+		n = read(s2m, &c, 1);
+	} while (n < 0 && errno == EINTR);
+
+	if (n <= 0)
+		rte_panic("cannot read on configuration pipe\n");
+
+	return 0;
+}
+
+/* set affinity for current EAL thread */
+static int
+eal_thread_set_affinity(void)
+{
+	unsigned lcore_id = rte_lcore_id();
+
+	/* acquire system unique id  */
+	rte_gettid();
+
+	/* update EAL thread core affinity */
+	return rte_thread_set_affinity(&lcore_config[lcore_id].cpuset);
+}
+
+void eal_thread_init_master(unsigned lcore_id)
+{
+	/* set the lcore ID in per-lcore memory area */
+	RTE_PER_LCORE(_lcore_id) = lcore_id;
+
+	/* set CPU affinity */
+	if (eal_thread_set_affinity() < 0)
+		rte_panic("cannot set affinity\n");
+}
+
+/* main loop of threads */
+__attribute__((noreturn)) void *
+eal_thread_loop(__attribute__((unused)) void *arg)
+{
+	char c;
+	int n, ret;
+	unsigned lcore_id;
+	pthread_t thread_id;
+	int m2s, s2m;
+	char cpuset[RTE_CPU_AFFINITY_STR_LEN];
+
+	thread_id = pthread_self();
+
+	/* retrieve our lcore_id from the configuration structure */
+	RTE_LCORE_FOREACH_SLAVE(lcore_id) {
+		if (thread_id == lcore_config[lcore_id].thread_id)
+			break;
+	}
+	if (lcore_id == RTE_MAX_LCORE)
+		rte_panic("cannot retrieve lcore id\n");
+
+	m2s = lcore_config[lcore_id].pipe_master2slave[0];
+	s2m = lcore_config[lcore_id].pipe_slave2master[1];
+
+	/* set the lcore ID in per-lcore memory area */
+	RTE_PER_LCORE(_lcore_id) = lcore_id;
+
+	/* set CPU affinity */
+	if (eal_thread_set_affinity() < 0)
+		rte_panic("cannot set affinity\n");
+
+	ret = eal_thread_dump_affinity(cpuset, RTE_CPU_AFFINITY_STR_LEN);
+
+	RTE_LOG(DEBUG, EAL, "lcore %u is ready (thread=%d;cpuset=[%s%s])\n",
+		lcore_id, rte_gettid(), cpuset, ret == 0 ? "" : "...");
+
+	/* read on our pipe to get commands */
+	while (1) {
+		void *fct_arg;
+
+		/* wait command */
+		do {
+			n = read(m2s, &c, 1);
+		} while (n < 0 && errno == EINTR);
+
+		if (n <= 0)
+			rte_panic("cannot read on configuration pipe\n");
+
+		lcore_config[lcore_id].state = RUNNING;
+
+		/* send ack */
+		n = 0;
+		while (n == 0 || (n < 0 && errno == EINTR))
+			n = write(s2m, &c, 1);
+		if (n < 0)
+			rte_panic("cannot write on configuration pipe\n");
+
+		if (lcore_config[lcore_id].f == NULL)
+			rte_panic("NULL function pointer\n");
+
+		/* call the function and store the return value */
+		fct_arg = lcore_config[lcore_id].arg;
+		ret = lcore_config[lcore_id].f(fct_arg);
+		lcore_config[lcore_id].ret = ret;
+		rte_wmb();
+		lcore_config[lcore_id].state = FINISHED;
+	}
+
+	/* never reached */
+	/* pthread_exit(NULL); */
+	/* return NULL; */
+}
diff --git a/lib/librte_eal/linuxapp/eal/Makefile b/lib/librte_eal/linuxapp/eal/Makefile
index 376d275..79beb90 100644
--- a/lib/librte_eal/linuxapp/eal/Makefile
+++ b/lib/librte_eal/linuxapp/eal/Makefile
@@ -55,6 +55,7 @@ ifeq ($(CONFIG_RTE_LIBRTE_XEN_DOM0),y)
 SRCS-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += eal_xen_memory.c
 endif
 SRCS-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += eal_thread.c
+SRCS-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += eal_common_thread.c
 SRCS-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += eal_log.c
 SRCS-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += eal_pci.c
 SRCS-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += eal_pci_uio.c
@@ -86,7 +87,6 @@ SRCS-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += eal_common_hexdump.c
 SRCS-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += eal_common_devargs.c
 SRCS-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += eal_common_dev.c
 SRCS-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += eal_common_options.c
-SRCS-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += eal_common_thread.c
 SRCS-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += rte_malloc.c
 SRCS-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += malloc_elem.c
 SRCS-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += malloc_heap.c
@@ -110,6 +110,7 @@ CFLAGS_eal_common_lcore.o := -D_GNU_SOURCE
 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12603
 ifeq ($(CONFIG_RTE_TOOLCHAIN_GCC),y)
 CFLAGS_eal_thread.o += -Wno-return-type
+CFLAGS_eal_common_thread.o += -Wno-return-type
 endif
 
 INC := rte_interrupts.h rte_kni_common.h rte_dom0_common.h
diff --git a/lib/librte_eal/linuxapp/eal/eal_thread.c b/lib/librte_eal/linuxapp/eal/eal_thread.c
index 18bd8e0..413ab0e 100644
--- a/lib/librte_eal/linuxapp/eal/eal_thread.c
+++ b/lib/librte_eal/linuxapp/eal/eal_thread.c
@@ -34,164 +34,11 @@
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <stdint.h>
 #include <unistd.h>
-#include <pthread.h>
-#include <sched.h>
-#include <sys/queue.h>
 #include <sys/syscall.h>
 
-#include <rte_debug.h>
-#include <rte_atomic.h>
-#include <rte_launch.h>
-#include <rte_log.h>
-#include <rte_memory.h>
-#include <rte_memzone.h>
-#include <rte_per_lcore.h>
-#include <rte_eal.h>
-#include <rte_per_lcore.h>
-#include <rte_lcore.h>
-
-#include "eal_private.h"
 #include "eal_thread.h"
 
-RTE_DEFINE_PER_LCORE(unsigned, _lcore_id) = LCORE_ID_ANY;
-RTE_DEFINE_PER_LCORE(unsigned, _socket_id) = (unsigned)SOCKET_ID_ANY;
-RTE_DEFINE_PER_LCORE(rte_cpuset_t, _cpuset);
-
-/*
- * Send a message to a slave lcore identified by slave_id to call a
- * function f with argument arg. Once the execution is done, the
- * remote lcore switch in FINISHED state.
- */
-int
-rte_eal_remote_launch(int (*f)(void *), void *arg, unsigned slave_id)
-{
-	int n;
-	char c = 0;
-	int m2s = lcore_config[slave_id].pipe_master2slave[1];
-	int s2m = lcore_config[slave_id].pipe_slave2master[0];
-
-	if (lcore_config[slave_id].state != WAIT)
-		return -EBUSY;
-
-	lcore_config[slave_id].f = f;
-	lcore_config[slave_id].arg = arg;
-
-	/* send message */
-	n = 0;
-	while (n == 0 || (n < 0 && errno == EINTR))
-		n = write(m2s, &c, 1);
-	if (n < 0)
-		rte_panic("cannot write on configuration pipe\n");
-
-	/* wait ack */
-	do {
-		n = read(s2m, &c, 1);
-	} while (n < 0 && errno == EINTR);
-
-	if (n <= 0)
-		rte_panic("cannot read on configuration pipe\n");
-
-	return 0;
-}
-
-/* set affinity for current EAL thread */
-static int
-eal_thread_set_affinity(void)
-{
-	unsigned lcore_id = rte_lcore_id();
-
-	/* acquire system unique id  */
-	rte_gettid();
-
-	/* update EAL thread core affinity */
-	return rte_thread_set_affinity(&lcore_config[lcore_id].cpuset);
-}
-
-void eal_thread_init_master(unsigned lcore_id)
-{
-	/* set the lcore ID in per-lcore memory area */
-	RTE_PER_LCORE(_lcore_id) = lcore_id;
-
-	/* set CPU affinity */
-	if (eal_thread_set_affinity() < 0)
-		rte_panic("cannot set affinity\n");
-}
-
-/* main loop of threads */
-__attribute__((noreturn)) void *
-eal_thread_loop(__attribute__((unused)) void *arg)
-{
-	char c;
-	int n, ret;
-	unsigned lcore_id;
-	pthread_t thread_id;
-	int m2s, s2m;
-	char cpuset[RTE_CPU_AFFINITY_STR_LEN];
-
-	thread_id = pthread_self();
-
-	/* retrieve our lcore_id from the configuration structure */
-	RTE_LCORE_FOREACH_SLAVE(lcore_id) {
-		if (thread_id == lcore_config[lcore_id].thread_id)
-			break;
-	}
-	if (lcore_id == RTE_MAX_LCORE)
-		rte_panic("cannot retrieve lcore id\n");
-
-	m2s = lcore_config[lcore_id].pipe_master2slave[0];
-	s2m = lcore_config[lcore_id].pipe_slave2master[1];
-
-	/* set the lcore ID in per-lcore memory area */
-	RTE_PER_LCORE(_lcore_id) = lcore_id;
-
-	/* set CPU affinity */
-	if (eal_thread_set_affinity() < 0)
-		rte_panic("cannot set affinity\n");
-
-	ret = eal_thread_dump_affinity(cpuset, RTE_CPU_AFFINITY_STR_LEN);
-
-	RTE_LOG(DEBUG, EAL, "lcore %u is ready (tid=%x;cpuset=[%s%s])\n",
-		lcore_id, (int)thread_id, cpuset, ret == 0 ? "" : "...");
-
-	/* read on our pipe to get commands */
-	while (1) {
-		void *fct_arg;
-
-		/* wait command */
-		do {
-			n = read(m2s, &c, 1);
-		} while (n < 0 && errno == EINTR);
-
-		if (n <= 0)
-			rte_panic("cannot read on configuration pipe\n");
-
-		lcore_config[lcore_id].state = RUNNING;
-
-		/* send ack */
-		n = 0;
-		while (n == 0 || (n < 0 && errno == EINTR))
-			n = write(s2m, &c, 1);
-		if (n < 0)
-			rte_panic("cannot write on configuration pipe\n");
-
-		if (lcore_config[lcore_id].f == NULL)
-			rte_panic("NULL function pointer\n");
-
-		/* call the function and store the return value */
-		fct_arg = lcore_config[lcore_id].arg;
-		ret = lcore_config[lcore_id].f(fct_arg);
-		lcore_config[lcore_id].ret = ret;
-		rte_wmb();
-		lcore_config[lcore_id].state = FINISHED;
-	}
-
-	/* never reached */
-	/* pthread_exit(NULL); */
-	/* return NULL; */
-}
-
 /* require calling thread tid by gettid() */
 int rte_sys_gettid(void)
 {
-- 
1.9.1