X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=vlib%2Fvlib%2Ftrace_funcs.h;h=1da46b41964fc6cd85f4c8e0e243fee41e71f556;hb=ce8debfe0faaea959aed846f83a0e1ade5f5acd2;hp=3dc7471e152ba4e4cc11b201770ae244b3fb38c1;hpb=cb9cadad578297ffd78fa8a33670bdf1ab669e7e;p=vpp.git

diff --git a/vlib/vlib/trace_funcs.h b/vlib/vlib/trace_funcs.h
index 3dc7471e152..1da46b41964 100644
--- a/vlib/vlib/trace_funcs.h
+++ b/vlib/vlib/trace_funcs.h
@@ -99,6 +99,8 @@ vlib_trace_next_frame (vlib_main_t * vm,
   nf->flags |= VLIB_FRAME_TRACE;
 }
 
+void trace_apply_filter (vlib_main_t * vm);
+
 /* Mark buffer as traced and allocate trace buffer. */
 always_inline void
 vlib_trace_buffer (vlib_main_t * vm,
@@ -110,6 +112,16 @@ vlib_trace_buffer (vlib_main_t * vm,
   vlib_trace_main_t * tm = &vm->trace_main;
   vlib_trace_header_t ** h;
 
+  /*
+   * Apply filter to existing traces to keep number of allocated traces low.
+   * Performed each time around the main loop.
+   */
+  if (tm->last_main_loop_count != vm->main_loop_count)
+    {
+      tm->last_main_loop_count = vm->main_loop_count;
+      trace_apply_filter (vm);
+    }
+
   vlib_trace_next_frame (vm, r, next_index);
 
   pool_get (tm->trace_buffer_pool, h);