#include <vlib/main.h>
#include <linux/sched.h>
-/*
- * To enable detailed tracing of barrier usage, including call stacks and
- * timings, define BARRIER_TRACING here or in relevant TAGS. If also used
- * with CLIB_DEBUG, timing will _not_ be representative of normal code
- * execution.
- *
- */
-
-// #define BARRIER_TRACING 1
-
-/*
- * Two options for barrier tracing output: syslog & elog.
- */
-
-// #define BARRIER_TRACING_ELOG 1
-
extern vlib_main_t **vlib_mains;
void vlib_set_thread_name (char *name);
vlib_thread_registration_t *registration;
u8 *name;
u64 barrier_sync_count;
-#ifdef BARRIER_TRACING
+ u8 barrier_elog_enabled;
const char *barrier_caller;
const char *barrier_context;
-#endif
volatile u32 *node_reforks_required;
long lwp;
- int lcore_id;
+ int cpu_id;
+ int core_id;
+ int numa_id;
pthread_t thread_id;
} vlib_worker_thread_t;
#define BARRIER_SYNC_TIMEOUT (1.0)
#endif
-#ifdef BARRIER_TRACING
-#define vlib_worker_thread_barrier_sync(X) {vlib_worker_threads[0].barrier_caller=__FUNCTION__;vlib_worker_thread_barrier_sync_int(X);}
-#else
-#define vlib_worker_thread_barrier_sync(X) vlib_worker_thread_barrier_sync_int(X)
-#endif
-
+#define vlib_worker_thread_barrier_sync(X) {vlib_worker_thread_barrier_sync_int(X, __FUNCTION__);}
-void vlib_worker_thread_barrier_sync_int (vlib_main_t * vm);
+void vlib_worker_thread_barrier_sync_int (vlib_main_t * vm,
+ const char *func_name);
void vlib_worker_thread_barrier_release (vlib_main_t * vm);
+void vlib_worker_thread_initial_barrier_sync_and_release (vlib_main_t * vm);
void vlib_worker_thread_node_refork (void);
static_always_inline uword
typedef struct
{
clib_error_t *(*vlib_launch_thread_cb) (void *fp, vlib_worker_thread_t * w,
- unsigned lcore_id);
- clib_error_t *(*vlib_thread_set_lcore_cb) (u32 thread, u16 lcore);
+ unsigned cpu_id);
+ clib_error_t *(*vlib_thread_set_lcore_cb) (u32 thread, u16 cpu);
} vlib_thread_callbacks_t;
typedef struct
/* callbacks */
vlib_thread_callbacks_t cb;
int extern_thread_mgmt;
+
+ /* NUMA-bound heap size */
+ uword numa_heap_size;
+
} vlib_thread_main_t;
extern vlib_thread_main_t vlib_thread_main;
{
if (PREDICT_FALSE (*vlib_worker_threads->wait_at_barrier))
{
- vlib_main_t *vm;
- clib_smp_atomic_add (vlib_worker_threads->workers_at_barrier, 1);
+ vlib_main_t *vm = vlib_get_main ();
+ u32 thread_index = vm->thread_index;
+ f64 t = vlib_time_now (vm);
+
+ if (PREDICT_FALSE (vlib_worker_threads->barrier_elog_enabled))
+ {
+ vlib_worker_thread_t *w = vlib_worker_threads + thread_index;
+ /* *INDENT-OFF* */
+ ELOG_TYPE_DECLARE (e) = {
+ .format = "barrier-wait-thread-%d",
+ .format_args = "i4",
+ };
+ /* *INDENT-ON* */
+
+ struct
+ {
+ u32 thread_index;
+ } __clib_packed *ed;
+
+ ed = ELOG_TRACK_DATA (&vlib_global_main.elog_main, e,
+ w->elog_track);
+ ed->thread_index = thread_index;
+ }
+
if (CLIB_DEBUG > 0)
{
vm = vlib_get_main ();
vm->parked_at_barrier = 1;
}
+ clib_atomic_fetch_add (vlib_worker_threads->workers_at_barrier, 1);
while (*vlib_worker_threads->wait_at_barrier)
;
+
+ /*
+ * Recompute the offset from thread-0 time.
+ * Note that vlib_time_now adds vm->time_offset, so
+ * clear it first. Save the resulting idea of "now", to
+ * see how well we're doing. See show_clock_command_fn(...)
+ */
+ {
+ f64 now;
+ vm->time_offset = 0.0;
+ now = vlib_time_now (vm);
+ vm->time_offset = vlib_global_main.time_last_barrier_release - now;
+ vm->time_last_barrier_release = vlib_time_now (vm);
+ }
+
if (CLIB_DEBUG > 0)
vm->parked_at_barrier = 0;
- clib_smp_atomic_add (vlib_worker_threads->workers_at_barrier, -1);
+ clib_atomic_fetch_add (vlib_worker_threads->workers_at_barrier, -1);
if (PREDICT_FALSE (*vlib_worker_threads->node_reforks_required))
{
+ if (PREDICT_FALSE (vlib_worker_threads->barrier_elog_enabled))
+ {
+ t = vlib_time_now (vm) - t;
+ vlib_worker_thread_t *w = vlib_worker_threads + thread_index;
+ /* *INDENT-OFF* */
+ ELOG_TYPE_DECLARE (e) = {
+ .format = "barrier-refork-thread-%d",
+ .format_args = "i4",
+ };
+ /* *INDENT-ON* */
+
+ struct
+ {
+ u32 thread_index;
+ } __clib_packed *ed;
+
+ ed = ELOG_TRACK_DATA (&vlib_global_main.elog_main, e,
+ w->elog_track);
+ ed->thread_index = thread_index;
+ }
+
vlib_worker_thread_node_refork ();
- clib_smp_atomic_add (vlib_worker_threads->node_reforks_required,
- -1);
+ clib_atomic_fetch_add (vlib_worker_threads->node_reforks_required,
+ -1);
while (*vlib_worker_threads->node_reforks_required)
;
}
+ if (PREDICT_FALSE (vlib_worker_threads->barrier_elog_enabled))
+ {
+ t = vlib_time_now (vm) - t;
+ vlib_worker_thread_t *w = vlib_worker_threads + thread_index;
+ /* *INDENT-OFF* */
+ ELOG_TYPE_DECLARE (e) = {
+ .format = "barrier-released-thread-%d: %dus",
+ .format_args = "i4i4",
+ };
+ /* *INDENT-ON* */
+
+ struct
+ {
+ u32 thread_index;
+ u32 duration;
+ } __clib_packed *ed;
+
+ ed = ELOG_TRACK_DATA (&vlib_global_main.elog_main, e,
+ w->elog_track);
+ ed->thread_index = thread_index;
+ ed->duration = (int) (1000000.0 * t);
+ }
}
}
fq = fqm->vlib_frame_queues[index];
ASSERT (fq);
- new_tail = __sync_add_and_fetch (&fq->tail, 1);
+ new_tail = clib_atomic_add_fetch (&fq->tail, 1);
/* Wait until a ring slot is available */
while (new_tail >= fq->head_hint + fq->nelts)
vlib_process_signal_event_mt_helper (vlib_process_signal_event_mt_args_t *
args);
void vlib_rpc_call_main_thread (void *function, u8 * args, u32 size);
+void vlib_get_thread_core_numa (vlib_worker_thread_t * w, unsigned cpu_id);
+
#endif /* included_vlib_threads_h */
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