@@ -50,7 +50,6 @@ CFLAGS += $(WERROR_FLAGS) -O3
SRCS-$(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_log.c
SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += eal_pci.c
SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += eal_lcore.c
@@ -73,16 +72,17 @@ 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_debug.c
+SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += eal_common_thread.c
CFLAGS_eal.o := -D_GNU_SOURCE
-#CFLAGS_eal_thread.o := -D_GNU_SOURCE
+#CFLAGS_eal_common_thread.o := -D_GNU_SOURCE
CFLAGS_eal_log.o := -D_GNU_SOURCE
CFLAGS_eal_common_log.o := -D_GNU_SOURCE
# workaround for a gcc bug with noreturn attribute
# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12603
ifeq ($(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
deleted file mode 100644
@@ -1,233 +0,0 @@
-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * 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 <sched.h>
-#include <pthread_np.h>
-#include <sys/queue.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_tailq.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);
-
-/*
- * 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)
-{
- int s;
- pthread_t thread;
-
-/*
- * According to the section VERSIONS of the CPU_ALLOC man page:
- *
- * The CPU_ZERO(), CPU_SET(), CPU_CLR(), and CPU_ISSET() macros were added
- * in glibc 2.3.3.
- *
- * CPU_COUNT() first appeared in glibc 2.6.
- *
- * CPU_AND(), CPU_OR(), CPU_XOR(), CPU_EQUAL(), CPU_ALLOC(),
- * CPU_ALLOC_SIZE(), CPU_FREE(), CPU_ZERO_S(), CPU_SET_S(), CPU_CLR_S(),
- * CPU_ISSET_S(), CPU_AND_S(), CPU_OR_S(), CPU_XOR_S(), and CPU_EQUAL_S()
- * first appeared in glibc 2.7.
- */
-#if defined(CPU_ALLOC)
- size_t size;
- cpu_set_t *cpusetp;
-
- cpusetp = CPU_ALLOC(RTE_MAX_LCORE);
- if (cpusetp == NULL) {
- RTE_LOG(ERR, EAL, "CPU_ALLOC failed\n");
- return -1;
- }
-
- size = CPU_ALLOC_SIZE(RTE_MAX_LCORE);
- CPU_ZERO_S(size, cpusetp);
- CPU_SET_S(rte_lcore_id(), size, cpusetp);
-
- thread = pthread_self();
- s = pthread_setaffinity_np(thread, size, cpusetp);
- if (s != 0) {
- RTE_LOG(ERR, EAL, "pthread_setaffinity_np failed\n");
- CPU_FREE(cpusetp);
- return -1;
- }
-
- CPU_FREE(cpusetp);
-#else /* CPU_ALLOC */
- cpuset_t cpuset;
- CPU_ZERO( &cpuset );
- CPU_SET( rte_lcore_id(), &cpuset );
-
- thread = pthread_self();
- s = pthread_setaffinity_np(thread, sizeof( cpuset ), &cpuset);
- if (s != 0) {
- RTE_LOG(ERR, EAL, "pthread_setaffinity_np failed\n");
- return -1;
- }
-#endif
- return 0;
-}
-
-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;
-
- 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");
-
- RTE_LOG(DEBUG, EAL, "Core %u is ready (tid=%p)\n",
- lcore_id, thread_id);
-
- 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");
-
- /* 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; */
-}
new file mode 100644
@@ -0,0 +1,248 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * 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>
+
+#ifdef RTE_EXEC_ENV_BSDAPP
+#include <pthread_np.h>
+#else /* RTE_EXEC_ENV_BSDAPP */
+#include <pthread.h>
+#endif /* RTE_EXEC_ENV_BSDAPP */
+
+#include <sched.h>
+#include <sys/queue.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_tailq.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);
+
+/*
+ * 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)
+{
+ int s;
+ pthread_t thread;
+
+/*
+ * According to the section VERSIONS of the CPU_ALLOC man page:
+ *
+ * The CPU_ZERO(), CPU_SET(), CPU_CLR(), and CPU_ISSET() macros were added
+ * in glibc 2.3.3.
+ *
+ * CPU_COUNT() first appeared in glibc 2.6.
+ *
+ * CPU_AND(), CPU_OR(), CPU_XOR(), CPU_EQUAL(), CPU_ALLOC(),
+ * CPU_ALLOC_SIZE(), CPU_FREE(), CPU_ZERO_S(), CPU_SET_S(), CPU_CLR_S(),
+ * CPU_ISSET_S(), CPU_AND_S(), CPU_OR_S(), CPU_XOR_S(), and CPU_EQUAL_S()
+ * first appeared in glibc 2.7.
+ */
+#if defined(CPU_ALLOC)
+ size_t size;
+ cpu_set_t *cpusetp;
+
+ cpusetp = CPU_ALLOC(RTE_MAX_LCORE);
+ if (cpusetp == NULL) {
+ RTE_LOG(ERR, EAL, "CPU_ALLOC failed\n");
+ return -1;
+ }
+
+ size = CPU_ALLOC_SIZE(RTE_MAX_LCORE);
+ CPU_ZERO_S(size, cpusetp);
+ CPU_SET_S(rte_lcore_id(), size, cpusetp);
+
+ thread = pthread_self();
+ s = pthread_setaffinity_np(thread, size, cpusetp);
+ if (s != 0) {
+ RTE_LOG(ERR, EAL, "pthread_setaffinity_np failed\n");
+ CPU_FREE(cpusetp);
+ return -1;
+ }
+
+ CPU_FREE(cpusetp);
+#else /* CPU_ALLOC */
+#ifdef RTE_EXEC_ENV_BSDAPP
+ cpuset_t cpuset;
+#else /* RTE_EXEC_ENV_BSDAPP */
+ cpu_set_t cpuset;
+#endif /* RTE_EXEC_ENV_BSDAPP */
+ CPU_ZERO(&cpuset);
+ CPU_SET(rte_lcore_id(), &cpuset);
+
+ thread = pthread_self();
+ s = pthread_setaffinity_np(thread, sizeof(cpuset), &cpuset);
+ if (s != 0) {
+ RTE_LOG(ERR, EAL, "pthread_setaffinity_np failed\n");
+ return -1;
+ }
+#endif
+ return 0;
+}
+
+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;
+
+ 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");
+
+#ifdef RTE_EXEC_ENV_BSDAPP
+ RTE_LOG(DEBUG, EAL, "Core %u is ready (tid=%p)\n",
+ lcore_id, thread_id);
+#else /* RTE_EXEC_ENV_BSDAPP */
+ RTE_LOG(DEBUG, EAL, "Core %u is ready (tid=%x)\n",
+ lcore_id, (int)thread_id);
+#endif /* RTE_EXEC_ENV_BSDAPP */
+
+ 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");
+
+ /* 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; */
+}
@@ -56,7 +56,6 @@ SRCS-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += eal_memory.c
ifeq ($(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-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += eal_log.c
SRCS-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += eal_pci.c
SRCS-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += eal_pci_uio.c
@@ -85,9 +84,10 @@ SRCS-$(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-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += eal_common_debug.c
+SRCS-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += eal_common_thread.c
CFLAGS_eal.o := -D_GNU_SOURCE
-CFLAGS_eal_thread.o := -D_GNU_SOURCE
+CFLAGS_eal_common_thread.o := -D_GNU_SOURCE
CFLAGS_eal_log.o := -D_GNU_SOURCE
CFLAGS_eal_common_log.o := -D_GNU_SOURCE
CFLAGS_eal_hugepage_info.o := -D_GNU_SOURCE
@@ -98,7 +98,7 @@ CFLAGS_eal_common_whitelist.o := -D_GNU_SOURCE
# workaround for a gcc bug with noreturn attribute
# 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
deleted file mode 100644
@@ -1,233 +0,0 @@
-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * 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 <sched.h>
-#include <sys/queue.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_tailq.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);
-
-/*
- * 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)
-{
- int s;
- pthread_t thread;
-
-/*
- * According to the section VERSIONS of the CPU_ALLOC man page:
- *
- * The CPU_ZERO(), CPU_SET(), CPU_CLR(), and CPU_ISSET() macros were added
- * in glibc 2.3.3.
- *
- * CPU_COUNT() first appeared in glibc 2.6.
- *
- * CPU_AND(), CPU_OR(), CPU_XOR(), CPU_EQUAL(), CPU_ALLOC(),
- * CPU_ALLOC_SIZE(), CPU_FREE(), CPU_ZERO_S(), CPU_SET_S(), CPU_CLR_S(),
- * CPU_ISSET_S(), CPU_AND_S(), CPU_OR_S(), CPU_XOR_S(), and CPU_EQUAL_S()
- * first appeared in glibc 2.7.
- */
-#if defined(CPU_ALLOC)
- size_t size;
- cpu_set_t *cpusetp;
-
- cpusetp = CPU_ALLOC(RTE_MAX_LCORE);
- if (cpusetp == NULL) {
- RTE_LOG(ERR, EAL, "CPU_ALLOC failed\n");
- return -1;
- }
-
- size = CPU_ALLOC_SIZE(RTE_MAX_LCORE);
- CPU_ZERO_S(size, cpusetp);
- CPU_SET_S(rte_lcore_id(), size, cpusetp);
-
- thread = pthread_self();
- s = pthread_setaffinity_np(thread, size, cpusetp);
- if (s != 0) {
- RTE_LOG(ERR, EAL, "pthread_setaffinity_np failed\n");
- CPU_FREE(cpusetp);
- return -1;
- }
-
- CPU_FREE(cpusetp);
-#else /* CPU_ALLOC */
- cpu_set_t cpuset;
- CPU_ZERO( &cpuset );
- CPU_SET( rte_lcore_id(), &cpuset );
-
- thread = pthread_self();
- s = pthread_setaffinity_np(thread, sizeof( cpuset ), &cpuset);
- if (s != 0) {
- RTE_LOG(ERR, EAL, "pthread_setaffinity_np failed\n");
- return -1;
- }
-#endif
- return 0;
-}
-
-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;
-
- 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");
-
- RTE_LOG(DEBUG, EAL, "Core %u is ready (tid=%x)\n",
- lcore_id, (int)thread_id);
-
- 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");
-
- /* 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; */
-}