---

yaml
---
r: 269098
b: refs/heads/master
c: b079d4e
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 53b0a61a9d31ef9b4256558c671094576e8eaf65
+refs/heads/master: b079d4e975b6338bcf8f8868eb2b3d3fd867b933

trunk/kernel/trace/trace.c

@@ -2720,9 +2720,9 @@ static const char readme_msg[] =
 	"# cat /sys/kernel/debug/tracing/trace_options\n"
 	"noprint-parent nosym-offset nosym-addr noverbose\n"
 	"# echo print-parent > /sys/kernel/debug/tracing/trace_options\n"
-	"# echo 1 > /sys/kernel/debug/tracing/tracing_on\n"
+	"# echo 1 > /sys/kernel/debug/tracing/tracing_enabled\n"
 	"# cat /sys/kernel/debug/tracing/trace > /tmp/trace.txt\n"
-	"# echo 0 > /sys/kernel/debug/tracing/tracing_on\n"
+	"# echo 0 > /sys/kernel/debug/tracing/tracing_enabled\n"
 ;
 
 static ssize_t
@@ -3903,6 +3903,8 @@ tracing_buffers_read(struct file *filp, char __user *ubuf,
 	if (info->read < PAGE_SIZE)
 		goto read;
 
+	info->read = 0;
+
 	trace_access_lock(info->cpu);
 	ret = ring_buffer_read_page(info->tr->buffer,
 				    &info->spare,
@@ -3912,8 +3914,6 @@ tracing_buffers_read(struct file *filp, char __user *ubuf,
 	if (ret < 0)
 		return 0;
 
-	info->read = 0;
-
 read:
 	size = PAGE_SIZE - info->read;
 	if (size > count)

trunk/tools/perf/builtin-top.c

@@ -304,7 +304,9 @@ static void print_sym_table(void)
 
 	hists__collapse_resort_threaded(&top.sym_evsel->hists);
 	hists__output_resort_threaded(&top.sym_evsel->hists);
-	hists__decay_entries_threaded(&top.sym_evsel->hists);
+	hists__decay_entries_threaded(&top.sym_evsel->hists,
+				      top.hide_user_symbols,
+				      top.hide_kernel_symbols);
 	hists__output_recalc_col_len(&top.sym_evsel->hists, winsize.ws_row - 3);
 	putchar('\n');
 	hists__fprintf(&top.sym_evsel->hists, NULL, false, false,
@@ -555,7 +557,9 @@ static void perf_top__sort_new_samples(void *arg)
 
 	hists__collapse_resort_threaded(&t->sym_evsel->hists);
 	hists__output_resort_threaded(&t->sym_evsel->hists);
-	hists__decay_entries_threaded(&t->sym_evsel->hists);
+	hists__decay_entries_threaded(&t->sym_evsel->hists,
+				      top.hide_user_symbols,
+				      top.hide_kernel_symbols);
 	hists__output_recalc_col_len(&t->sym_evsel->hists, winsize.ws_row - 3);
 }
 

trunk/tools/perf/util/hist.c

@@ -108,7 +108,8 @@ static bool hists__decay_entry(struct hists *hists, struct hist_entry *he)
 	return he->period == 0;
 }
 
-static void __hists__decay_entries(struct hists *hists, bool threaded)
+static void __hists__decay_entries(struct hists *hists, bool zap_user,
+				   bool zap_kernel, bool threaded)
 {
 	struct rb_node *next = rb_first(&hists->entries);
 	struct hist_entry *n;
@@ -121,7 +122,10 @@ static void __hists__decay_entries(struct hists *hists, bool threaded)
 		 * case some it gets new samples, we'll eventually free it when
 		 * the user stops browsing and it agains gets fully decayed.
 		 */
-		if (hists__decay_entry(hists, n) && !n->used) {
+		if (((zap_user && n->level == '.') ||
+		     (zap_kernel && n->level != '.') ||
+		     hists__decay_entry(hists, n)) &&
+		    !n->used) {
 			rb_erase(&n->rb_node, &hists->entries);
 
 			if (sort__need_collapse || threaded)
@@ -133,14 +137,15 @@ static void __hists__decay_entries(struct hists *hists, bool threaded)
 	}
 }
 
-void hists__decay_entries(struct hists *hists)
+void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel)
 {
-	return __hists__decay_entries(hists, false);
+	return __hists__decay_entries(hists, zap_user, zap_kernel, false);
 }
 
-void hists__decay_entries_threaded(struct hists *hists)
+void hists__decay_entries_threaded(struct hists *hists,
+				   bool zap_user, bool zap_kernel)
 {
-	return __hists__decay_entries(hists, true);
+	return __hists__decay_entries(hists, zap_user, zap_kernel, true);
 }
 
 /*

trunk/tools/perf/util/hist.h

@@ -78,8 +78,9 @@ void hists__output_resort_threaded(struct hists *hists);
 void hists__collapse_resort(struct hists *self);
 void hists__collapse_resort_threaded(struct hists *hists);
 
-void hists__decay_entries(struct hists *hists);
-void hists__decay_entries_threaded(struct hists *hists);
+void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel);
+void hists__decay_entries_threaded(struct hists *hists, bool zap_user,
+				   bool zap_kernel);
 void hists__output_recalc_col_len(struct hists *hists, int max_rows);
 
 void hists__inc_nr_events(struct hists *self, u32 type);