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-rw-r--r--src/vlib/threads.c33
1 files changed, 15 insertions, 18 deletions
diff --git a/src/vlib/threads.c b/src/vlib/threads.c
index 36a80800a09..57ba39a00d8 100644
--- a/src/vlib/threads.c
+++ b/src/vlib/threads.c
@@ -175,7 +175,6 @@ vlib_thread_init (vlib_main_t * vm)
vlib_thread_main_t *tm = &vlib_thread_main;
vlib_worker_thread_t *w;
vlib_thread_registration_t *tr;
- cpu_set_t cpuset;
u32 n_vlib_mains = 1;
u32 first_index = 1;
u32 i;
@@ -205,33 +204,26 @@ vlib_thread_init (vlib_main_t * vm)
}
/* grab cpu for main thread */
- if (tm->main_lcore == ~0)
- {
- /* if main-lcore is not set, we try to use lcore 1 */
- if (clib_bitmap_get (avail_cpu, 1))
- tm->main_lcore = 1;
- else
- tm->main_lcore = clib_bitmap_first_set (avail_cpu);
- if (tm->main_lcore == (u8) ~ 0)
- return clib_error_return (0, "no available cpus to be used for the"
- " main thread");
- }
- else
+ if (tm->main_lcore != ~0)
{
if (clib_bitmap_get (avail_cpu, tm->main_lcore) == 0)
return clib_error_return (0, "cpu %u is not available to be used"
" for the main thread", tm->main_lcore);
+ avail_cpu = clib_bitmap_set (avail_cpu, tm->main_lcore, 0);
}
- avail_cpu = clib_bitmap_set (avail_cpu, tm->main_lcore, 0);
/* assume that there is socket 0 only if there is no data from sysfs */
if (!tm->cpu_socket_bitmap)
tm->cpu_socket_bitmap = clib_bitmap_set (0, 0, 1);
/* pin main thread to main_lcore */
- CPU_ZERO (&cpuset);
- CPU_SET (tm->main_lcore, &cpuset);
- pthread_setaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset);
+ if (tm->main_lcore != ~0)
+ {
+ cpu_set_t cpuset;
+ CPU_ZERO (&cpuset);
+ CPU_SET (tm->main_lcore, &cpuset);
+ pthread_setaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset);
+ }
/* Set up thread 0 */
vec_validate_aligned (vlib_worker_threads, 0, CLIB_CACHE_LINE_BYTES);
@@ -1652,12 +1644,17 @@ vlib_rpc_call_main_thread (void *callback, u8 * args, u32 arg_size)
clib_error_t *
threads_init (vlib_main_t * vm)
{
+ const vlib_thread_main_t *tm = vlib_get_thread_main ();
+
+ if (tm->main_lcore == ~0 && tm->n_vlib_mains > 1)
+ return clib_error_return (0, "Configuration error, a main core must "
+ "be specified when using worker threads");
+
return 0;
}
VLIB_INIT_FUNCTION (threads_init);
-
static clib_error_t *
show_clock_command_fn (vlib_main_t * vm,
unformat_input_t * input, vlib_cli_command_t * cmd)