Print out the event files stored in a data file

Add -E option to print out the event files stored in a data file.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

2 files changed, 16 insertions, 3 deletions

diff --git a/trace-cmd.c b/trace-cmd.c
index 2a531bb..ca1fbfa 100644
--- a/trace-cmd.c
+++ b/trace-cmd.c
@@ -1154,11 +1154,12 @@ void usage(char **argv)
                "          -o data output file [default trace.dat]\n"
                "          -O option to enable (or disable)\n"
                "\n"
-               " %s report [-i file] [--cpu cpu] [-e][-f]\n"
+               " %s report [-i file] [--cpu cpu] [-e][-f][-l][-P][-E]\n"
                "          -i input file [default trace.dat]\n"
                "          -e show file endianess\n"
                "          -f show function list\n"
                "          -P show printk list\n"
+               "          -E show event files stored\n"
                "          -l show latency format (default with latency tracers)\n"
                "\n"
                " %s list [-e][-p]\n"
diff --git a/trace-read.c b/trace-read.c
index 2204b2a..ebabdde 100644
--- a/trace-read.c
+++ b/trace-read.c
@@ -47,6 +47,8 @@ int file_bigendian;
 int host_bigendian;
 static int long_size;
 
+static int show_events = 0;
+
 static int filter_cpu = -1;
 
 static int read_or_die(void *data, int size)
@@ -215,8 +217,11 @@ static void read_event_file(char *system, unsigned long long size)
 {
         char *buf;
 
-        buf = malloc_or_die(size);
+        buf = malloc_or_die(size+1);
         read_or_die(buf, size);
+        buf[size] = 0;
+        if (show_events)
+                printf("%s\n", buf);
         parse_event_file(buf, size, system);
         free(buf);
 }
@@ -754,7 +759,7 @@ void trace_report (int argc, char **argv)
                         {NULL, 0, NULL, 0}
                 };
 
-                c = getopt_long (argc-1, argv+1, "+hi:fepPl",
+                c = getopt_long (argc-1, argv+1, "+hi:fepPlE",
                         long_options, &option_index);
                 if (c == -1)
                         break;
@@ -777,6 +782,9 @@ void trace_report (int argc, char **argv)
                 case 'p':
                         show_page_size = 1;
                         break;
+                case 'E':
+                        show_events = 1;
+                        break;
                 case 'l':
                         latency_format = 1;
                         break;
@@ -820,6 +828,10 @@ void trace_report (int argc, char **argv)
                 print_printk();
                 return;
         }
+
+        if (show_events)
+                return;
+
         read_data_info();
 
         return;