VPP-425: Scheduler policy & priority configuration
[vpp.git] / vlib / vlib / threads_cli.c
index 26cb221..179906b 100644 (file)
 #include <vlib/vlib.h>
 
 #include <vlib/threads.h>
+#include <linux/sched.h>
+
+u8 *
+format_sched_policy (u8 * s, va_list * args)
+{
+  u32 i = va_arg (*args, u32);
+  u8 *t = 0;
+
+  switch (i)
+    {
+#define _(v,f,str) case SCHED_POLICY_##f: t = (u8 *) str; break;
+      foreach_sched_policy
+#undef _
+    }
+  s = format (s, "%-6s ", t);
+  return s;
+}
 
 static clib_error_t *
 show_threads_fn (vlib_main_t * vm,
-       unformat_input_t * input,
-       vlib_cli_command_t * cmd)
+                unformat_input_t * input, vlib_cli_command_t * cmd)
 {
-  vlib_worker_thread_t * w;
+  vlib_worker_thread_t *w;
   int i;
 
-  vlib_cli_output (vm, "%-7s%-20s%-12s%-8s%-7s%-7s%-7s%-10s",
-                   "ID", "Name", "Type", "LWP",
-                   "lcore", "Core", "Socket", "State");
+  vlib_cli_output (vm, "%-7s%-20s%-12s%-8s%-7s%-9s%-7s%-7s%-7s%-10s",
+                  "ID", "Name", "Type", "LWP", "Policy", "Priority",
+                  "lcore", "Core", "Socket", "State");
 
 #if !defined(__powerpc64__)
-  for (i = 0; i < vec_len(vlib_worker_threads); i++)
+  for (i = 0; i < vec_len (vlib_worker_threads); i++)
     {
       w = vlib_worker_threads + i;
-      u8 * line = NULL;
+      u8 *line = NULL;
+
+      line = format (line, "%-7d%-20s%-12s%-8d",
+                    i,
+                    w->name ? w->name : (u8 *) "",
+                    w->registration ? w->registration->name : "", w->lwp);
+
+      line =
+       format (line, "%U", format_sched_policy, sched_getscheduler (w->lwp));
 
-      line = format(line, "%-7d%-20s%-12s%-8d",
-                    i,
-                    w->name ? w->name : (u8 *) "",
-                    w->registration ? w->registration->name : "",
-                    w->lwp);
+      struct sched_param sched_param;
+      line = format (line, "%8d ",
+                    (!sched_getparam (w->lwp, &sched_param)) ?
+                    sched_param.sched_priority : -1);
 
 #if DPDK==1
       int lcore = w->dpdk_lcore_id;
       if (lcore > -1)
-        {
-          line = format(line, "%-7u%-7u%-7u",
-                        lcore,
-                        lcore_config[lcore].core_id,
-                        lcore_config[lcore].socket_id);
-
-          switch(lcore_config[lcore].state)
-            {
-              case WAIT:
-                line = format(line, "wait");
-                break;
-              case RUNNING:
-                line = format(line, "running");
-                break;
-              case FINISHED:
-                line = format(line, "finished");
-                break;
-              default:
-                line = format(line, "unknown");
-            }
-        }
+       {
+         line = format (line, "%-7u%-7u%-7u",
+                        lcore,
+                        lcore_config[lcore].core_id,
+                        lcore_config[lcore].socket_id);
+
+         switch (lcore_config[lcore].state)
+           {
+           case WAIT:
+             line = format (line, "wait");
+             break;
+           case RUNNING:
+             line = format (line, "running");
+             break;
+           case FINISHED:
+             line = format (line, "finished");
+             break;
+           default:
+             line = format (line, "unknown");
+           }
+       }
 #endif
-      vlib_cli_output(vm, "%v", line);
-      vec_free(line);
+      vlib_cli_output (vm, "%v", line);
+      vec_free (line);
     }
 #endif
 
@@ -76,64 +99,76 @@ show_threads_fn (vlib_main_t * vm,
 }
 
 
+/* *INDENT-OFF* */
 VLIB_CLI_COMMAND (show_threads_command, static) = {
   .path = "show threads",
   .short_help = "Show threads",
   .function = show_threads_fn,
 };
+/* *INDENT-ON* */
 
 /*
  * Trigger threads to grab frame queue trace data
  */
 static clib_error_t *
-trace_frame_queue (vlib_main_t *vm, unformat_input_t *input,
-                  vlib_cli_command_t *cmd)
+trace_frame_queue (vlib_main_t * vm, unformat_input_t * input,
+                  vlib_cli_command_t * cmd)
 {
-  clib_error_t * error = NULL;
+  clib_error_t *error = NULL;
   frame_queue_trace_t *fqt;
   frame_queue_nelt_counter_t *fqh;
-  vlib_thread_main_t *tm = vlib_get_thread_main();
+  vlib_thread_main_t *tm = vlib_get_thread_main ();
   u32 num_fq;
   u32 fqix;
   u32 enable = 0;
 
-  if (unformat(input, "on")) {
-    enable = 1;
-  } else if (unformat(input, "off")) {
-    enable = 0;
-  } else {
-      return clib_error_return(0, "expecting on or off");
-  }
+  if (unformat (input, "on"))
+    {
+      enable = 1;
+    }
+  else if (unformat (input, "off"))
+    {
+      enable = 0;
+    }
+  else
+    {
+      return clib_error_return (0, "expecting on or off");
+    }
 
-  num_fq = vec_len(vlib_frame_queues);
+  num_fq = vec_len (vlib_frame_queues);
   if (num_fq == 0)
     {
-      vlib_cli_output(vm, "No frame queues exist\n");
+      vlib_cli_output (vm, "No frame queues exist\n");
       return error;
     }
 
   // Allocate storage for trace if necessary
-  vec_validate_aligned(tm->frame_queue_traces, num_fq-1, CLIB_CACHE_LINE_BYTES);
-  vec_validate_aligned(tm->frame_queue_histogram, num_fq-1, CLIB_CACHE_LINE_BYTES);
-
-  for (fqix=0; fqix<num_fq; fqix++) {
-    fqt = &tm->frame_queue_traces[fqix];
-    fqh = &tm->frame_queue_histogram[fqix];
-
-    memset(fqt->n_vectors, 0xff, sizeof(fqt->n_vectors));
-    fqt->written = 0;
-    memset(fqh, 0, sizeof(*fqh));
-    vlib_frame_queues[fqix]->trace = enable;
-  }
+  vec_validate_aligned (tm->frame_queue_traces, num_fq - 1,
+                       CLIB_CACHE_LINE_BYTES);
+  vec_validate_aligned (tm->frame_queue_histogram, num_fq - 1,
+                       CLIB_CACHE_LINE_BYTES);
+
+  for (fqix = 0; fqix < num_fq; fqix++)
+    {
+      fqt = &tm->frame_queue_traces[fqix];
+      fqh = &tm->frame_queue_histogram[fqix];
+
+      memset (fqt->n_vectors, 0xff, sizeof (fqt->n_vectors));
+      fqt->written = 0;
+      memset (fqh, 0, sizeof (*fqh));
+      vlib_frame_queues[fqix]->trace = enable;
+    }
   return error;
 }
 
+/* *INDENT-OFF* */
 VLIB_CLI_COMMAND (cmd_trace_frame_queue,static) = {
     .path = "trace frame-queue",
     .short_help = "trace frame-queue (on|off)",
     .function = trace_frame_queue,
     .is_mp_safe = 1,
 };
+/* *INDENT-ON* */
 
 
 /*
@@ -141,222 +176,258 @@ VLIB_CLI_COMMAND (cmd_trace_frame_queue,static) = {
  * Round up, e.g. 0.000001 => 1%
  */
 static u32
-compute_percent (u64 *two_counters, u64 total)
+compute_percent (u64 * two_counters, u64 total)
 {
-    if (total == 0)
-      {
-        return 0;
-      }
-    else
-      {
-        return (((two_counters[0] + two_counters[1]) * 100) + (total-1)) / total;
-      }
+  if (total == 0)
+    {
+      return 0;
+    }
+  else
+    {
+      return (((two_counters[0] + two_counters[1]) * 100) +
+             (total - 1)) / total;
+    }
 }
 
 /*
  * Display frame queue trace data gathered by threads.
  */
 static clib_error_t *
-show_frame_queue_internal (vlib_main_t *vm,
-                           u32          histogram)
+show_frame_queue_internal (vlib_main_t * vm, u32 histogram)
 {
-  vlib_thread_main_t *tm = vlib_get_thread_main();
-  clib_error_t * error = NULL;
+  vlib_thread_main_t *tm = vlib_get_thread_main ();
+  clib_error_t *error = NULL;
   frame_queue_trace_t *fqt;
   frame_queue_nelt_counter_t *fqh;
   u32 num_fq;
   u32 fqix;
 
-  num_fq = vec_len(tm->frame_queue_traces);
+  num_fq = vec_len (tm->frame_queue_traces);
   if (num_fq == 0)
     {
-      vlib_cli_output(vm, "No trace data for frame queues\n");
+      vlib_cli_output (vm, "No trace data for frame queues\n");
       return error;
     }
 
   if (histogram)
     {
-      vlib_cli_output(vm, "0-1   2-3   4-5   6-7   8-9   10-11 12-13 14-15 "
-                          "16-17 18-19 20-21 22-23 24-25 26-27 28-29 30-31\n");
+      vlib_cli_output (vm, "0-1   2-3   4-5   6-7   8-9   10-11 12-13 14-15 "
+                      "16-17 18-19 20-21 22-23 24-25 26-27 28-29 30-31\n");
     }
 
-  for (fqix=0; fqix<num_fq; fqix++) {
-    fqt = &(tm->frame_queue_traces[fqix]);
-
-    vlib_cli_output(vm, "Thread %d %v\n", fqix, vlib_worker_threads[fqix].name);
-
-    if (fqt->written == 0)
-      {
-        vlib_cli_output(vm, "  no trace data\n");
-        continue;
-      }
-
-    if (histogram)
-      {
-        fqh = &(tm->frame_queue_histogram[fqix]);
-        u32 nelt;
-        u64 total = 0;
-
-        for (nelt=0; nelt<FRAME_QUEUE_MAX_NELTS; nelt++) {
-            total += fqh->count[nelt];
-        }
-
-        /*
-         * Print in pairs to condense the output.
-         * Allow entries with 0 counts to be clearly identified, by rounding up.
-         * Any non-zero value will be displayed as at least one percent. This
-         * also means the sum of percentages can be > 100, but that is fine. The
-         * histogram is counted from the last time "trace frame on" was issued.
-         */
-        vlib_cli_output(vm,
-                        "%3d%%  %3d%%  %3d%%  %3d%%  %3d%%  %3d%%  %3d%%  %3d%%  "
-                        "%3d%%  %3d%%  %3d%%  %3d%%  %3d%%  %3d%%  %3d%%  %3d%%\n",
-                        compute_percent(&fqh->count[ 0], total),
-                        compute_percent(&fqh->count[ 2], total),
-                        compute_percent(&fqh->count[ 4], total),
-                        compute_percent(&fqh->count[ 6], total),
-                        compute_percent(&fqh->count[ 8], total),
-                        compute_percent(&fqh->count[10], total),
-                        compute_percent(&fqh->count[12], total),
-                        compute_percent(&fqh->count[14], total),
-                        compute_percent(&fqh->count[16], total),
-                        compute_percent(&fqh->count[18], total),
-                        compute_percent(&fqh->count[20], total),
-                        compute_percent(&fqh->count[22], total),
-                        compute_percent(&fqh->count[24], total),
-                        compute_percent(&fqh->count[26], total),
-                        compute_percent(&fqh->count[28], total),
-                        compute_percent(&fqh->count[30], total));
-      }
-    else
-      {
-        vlib_cli_output(vm, "  vector-threshold %d  ring size %d  in use %d\n",
-                        fqt->threshold, fqt->nelts, fqt->n_in_use);
-        vlib_cli_output(vm, "  head %12d  head_hint %12d  tail %12d\n",
-                        fqt->head, fqt->head_hint, fqt->tail);
-        vlib_cli_output(vm, "  %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d\n",
-                        fqt->n_vectors[0], fqt->n_vectors[1], fqt->n_vectors[2], fqt->n_vectors[3],
-                        fqt->n_vectors[4], fqt->n_vectors[5], fqt->n_vectors[6], fqt->n_vectors[7],
-                        fqt->n_vectors[8], fqt->n_vectors[9], fqt->n_vectors[10], fqt->n_vectors[11],
-                        fqt->n_vectors[12], fqt->n_vectors[13], fqt->n_vectors[14], fqt->n_vectors[15]);
-
-        if (fqt->nelts > 16)
-          {
-            vlib_cli_output(vm, "  %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d\n",
-                            fqt->n_vectors[16], fqt->n_vectors[17], fqt->n_vectors[18], fqt->n_vectors[19],
-                            fqt->n_vectors[20], fqt->n_vectors[21], fqt->n_vectors[22], fqt->n_vectors[23],
-                            fqt->n_vectors[24], fqt->n_vectors[25], fqt->n_vectors[26], fqt->n_vectors[27],
-                            fqt->n_vectors[28], fqt->n_vectors[29], fqt->n_vectors[30], fqt->n_vectors[31]);
-          }
-      }
-
-   }
+  for (fqix = 0; fqix < num_fq; fqix++)
+    {
+      fqt = &(tm->frame_queue_traces[fqix]);
+
+      vlib_cli_output (vm, "Thread %d %v\n", fqix,
+                      vlib_worker_threads[fqix].name);
+
+      if (fqt->written == 0)
+       {
+         vlib_cli_output (vm, "  no trace data\n");
+         continue;
+       }
+
+      if (histogram)
+       {
+         fqh = &(tm->frame_queue_histogram[fqix]);
+         u32 nelt;
+         u64 total = 0;
+
+         for (nelt = 0; nelt < FRAME_QUEUE_MAX_NELTS; nelt++)
+           {
+             total += fqh->count[nelt];
+           }
+
+         /*
+          * Print in pairs to condense the output.
+          * Allow entries with 0 counts to be clearly identified, by rounding up.
+          * Any non-zero value will be displayed as at least one percent. This
+          * also means the sum of percentages can be > 100, but that is fine. The
+          * histogram is counted from the last time "trace frame on" was issued.
+          */
+         vlib_cli_output (vm,
+                          "%3d%%  %3d%%  %3d%%  %3d%%  %3d%%  %3d%%  %3d%%  %3d%%  "
+                          "%3d%%  %3d%%  %3d%%  %3d%%  %3d%%  %3d%%  %3d%%  %3d%%\n",
+                          compute_percent (&fqh->count[0], total),
+                          compute_percent (&fqh->count[2], total),
+                          compute_percent (&fqh->count[4], total),
+                          compute_percent (&fqh->count[6], total),
+                          compute_percent (&fqh->count[8], total),
+                          compute_percent (&fqh->count[10], total),
+                          compute_percent (&fqh->count[12], total),
+                          compute_percent (&fqh->count[14], total),
+                          compute_percent (&fqh->count[16], total),
+                          compute_percent (&fqh->count[18], total),
+                          compute_percent (&fqh->count[20], total),
+                          compute_percent (&fqh->count[22], total),
+                          compute_percent (&fqh->count[24], total),
+                          compute_percent (&fqh->count[26], total),
+                          compute_percent (&fqh->count[28], total),
+                          compute_percent (&fqh->count[30], total));
+       }
+      else
+       {
+         vlib_cli_output (vm,
+                          "  vector-threshold %d  ring size %d  in use %d\n",
+                          fqt->threshold, fqt->nelts, fqt->n_in_use);
+         vlib_cli_output (vm, "  head %12d  head_hint %12d  tail %12d\n",
+                          fqt->head, fqt->head_hint, fqt->tail);
+         vlib_cli_output (vm,
+                          "  %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d\n",
+                          fqt->n_vectors[0], fqt->n_vectors[1],
+                          fqt->n_vectors[2], fqt->n_vectors[3],
+                          fqt->n_vectors[4], fqt->n_vectors[5],
+                          fqt->n_vectors[6], fqt->n_vectors[7],
+                          fqt->n_vectors[8], fqt->n_vectors[9],
+                          fqt->n_vectors[10], fqt->n_vectors[11],
+                          fqt->n_vectors[12], fqt->n_vectors[13],
+                          fqt->n_vectors[14], fqt->n_vectors[15]);
+
+         if (fqt->nelts > 16)
+           {
+             vlib_cli_output (vm,
+                              "  %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d\n",
+                              fqt->n_vectors[16], fqt->n_vectors[17],
+                              fqt->n_vectors[18], fqt->n_vectors[19],
+                              fqt->n_vectors[20], fqt->n_vectors[21],
+                              fqt->n_vectors[22], fqt->n_vectors[23],
+                              fqt->n_vectors[24], fqt->n_vectors[25],
+                              fqt->n_vectors[26], fqt->n_vectors[27],
+                              fqt->n_vectors[28], fqt->n_vectors[29],
+                              fqt->n_vectors[30], fqt->n_vectors[31]);
+           }
+       }
+
+    }
   return error;
 }
 
 static clib_error_t *
-show_frame_queue_trace (vlib_main_t *vm, unformat_input_t *input,
-                        vlib_cli_command_t *cmd)
+show_frame_queue_trace (vlib_main_t * vm, unformat_input_t * input,
+                       vlib_cli_command_t * cmd)
 {
   return show_frame_queue_internal (vm, 0);
 }
 
 static clib_error_t *
-show_frame_queue_histogram (vlib_main_t *vm, unformat_input_t *input,
-                            vlib_cli_command_t *cmd)
+show_frame_queue_histogram (vlib_main_t * vm, unformat_input_t * input,
+                           vlib_cli_command_t * cmd)
 {
   return show_frame_queue_internal (vm, 1);
 }
 
+/* *INDENT-OFF* */
 VLIB_CLI_COMMAND (cmd_show_frame_queue_trace,static) = {
     .path = "show frame-queue",
     .short_help = "show frame-queue trace",
     .function = show_frame_queue_trace,
 };
+/* *INDENT-ON* */
 
+/* *INDENT-OFF* */
 VLIB_CLI_COMMAND (cmd_show_frame_queue_histogram,static) = {
     .path = "show frame-queue histogram",
     .short_help = "show frame-queue histogram",
     .function = show_frame_queue_histogram,
 };
+/* *INDENT-ON* */
 
 
 /*
  * Modify the number of elements on the frame_queues
  */
 static clib_error_t *
-test_frame_queue_nelts (vlib_main_t *vm, unformat_input_t *input,
-                        vlib_cli_command_t *cmd)
+test_frame_queue_nelts (vlib_main_t * vm, unformat_input_t * input,
+                       vlib_cli_command_t * cmd)
 {
-  clib_error_t * error = NULL;
+  clib_error_t *error = NULL;
   u32 num_fq;
   u32 fqix;
   u32 nelts = 0;
 
-  unformat(input, "%d", &nelts);
-  if ((nelts != 4) && (nelts != 8) && (nelts != 16) && (nelts != 32)) {
-      return clib_error_return(0, "expecting 4,8,16,32");
-  }
+  if ((unformat (input, "%d", &nelts) != 1) ||
+      ((nelts != 4) && (nelts != 8) && (nelts != 16) && (nelts != 32)))
+    {
+      return clib_error_return (0, "expecting 4,8,16,32");
+    }
 
-  num_fq = vec_len(vlib_frame_queues);
+  num_fq = vec_len (vlib_frame_queues);
   if (num_fq == 0)
     {
-      vlib_cli_output(vm, "No frame queues exist\n");
+      vlib_cli_output (vm, "No frame queues exist\n");
       return error;
     }
 
-  for (fqix=0; fqix<num_fq; fqix++) {
-    vlib_frame_queues[fqix]->nelts = nelts;
-  }
+  for (fqix = 0; fqix < num_fq; fqix++)
+    {
+      vlib_frame_queues[fqix]->nelts = nelts;
+    }
 
   return error;
 }
 
+/* *INDENT-OFF* */
 VLIB_CLI_COMMAND (cmd_test_frame_queue_nelts,static) = {
     .path = "test frame-queue nelts",
     .short_help = "test frame-queue nelts (4,8,16,32)",
     .function = test_frame_queue_nelts,
 };
+/* *INDENT-ON* */
 
 
 /*
  * Modify the max number of packets pulled off the frame queues
  */
 static clib_error_t *
-test_frame_queue_threshold (vlib_main_t *vm, unformat_input_t *input,
-                            vlib_cli_command_t *cmd)
+test_frame_queue_threshold (vlib_main_t * vm, unformat_input_t * input,
+                           vlib_cli_command_t * cmd)
 {
-  clib_error_t * error = NULL;
+  clib_error_t *error = NULL;
   u32 num_fq;
   u32 fqix;
   u32 threshold = 0;
 
-  if (unformat(input, "%d", &threshold)) {
-  } else {
-      vlib_cli_output(vm, "expecting threshold value\n");
+  if (unformat (input, "%d", &threshold))
+    {
+    }
+  else
+    {
+      vlib_cli_output (vm, "expecting threshold value\n");
       return error;
-  }
+    }
 
   if (threshold == 0)
     threshold = ~0;
 
-  num_fq = vec_len(vlib_frame_queues);
+  num_fq = vec_len (vlib_frame_queues);
   if (num_fq == 0)
     {
-      vlib_cli_output(vm, "No frame queues exist\n");
+      vlib_cli_output (vm, "No frame queues exist\n");
       return error;
     }
 
-  for (fqix=0; fqix<num_fq; fqix++) {
-    vlib_frame_queues[fqix]->vector_threshold = threshold;
-  }
+  for (fqix = 0; fqix < num_fq; fqix++)
+    {
+      vlib_frame_queues[fqix]->vector_threshold = threshold;
+    }
 
   return error;
 }
 
+/* *INDENT-OFF* */
 VLIB_CLI_COMMAND (cmd_test_frame_queue_threshold,static) = {
     .path = "test frame-queue threshold",
     .short_help = "test frame-queue threshold N (0=no limit)",
     .function = test_frame_queue_threshold,
 };
+/* *INDENT-ON* */
 
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */