trace-cmd: Allow report to ignore the date option

Add --nodate to trace-cmd report to ignore the date offset and give
the raw timestamp count of the records.

This also adds a flags field to the tracecmd_input struct and is set
and cleared with tracecmd_set_flag() and tracecmd_clear_flag()
respectively.

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

3 files changed, 28 insertions, 0 deletions

diff --git a/trace-cmd.h b/trace-cmd.h
index af0645a..5a7c6c0 100644
--- a/trace-cmd.h
+++ b/trace-cmd.h
@@ -80,6 +80,10 @@ enum {
         TRACECMD_OPTION_DATE,
 };
 
+enum {
+        TRACECMD_FL_IGNORE_DATE         = 1,
+};
+
 struct tracecmd_ftrace {
         struct tracecmd_input           *handle;
         struct event_format *fgraph_ret_event;
@@ -98,6 +102,8 @@ int tracecmd_long_size(struct tracecmd_input *handle);
 int tracecmd_page_size(struct tracecmd_input *handle);
 int tracecmd_cpus(struct tracecmd_input *handle);
 int tracecmd_copy_headers(struct tracecmd_input *handle, int fd);
+void tracecmd_set_flag(struct tracecmd_input *handle, int flag);
+void tracecmd_clear_flag(struct tracecmd_input *handle, int flag);
 
 void tracecmd_print_events(struct tracecmd_input *handle);
 
diff --git a/trace-input.c b/trace-input.c
index 201f5dd..a567754 100644
--- a/trace-input.c
+++ b/trace-input.c
@@ -77,6 +77,7 @@ struct cpu_data {
 struct tracecmd_input {
         struct pevent           *pevent;
         struct plugin_list      *plugin_list;
+        unsigned long           flags;
         int                     fd;
         int                     long_size;
         int                     page_size;
@@ -97,6 +98,16 @@ struct tracecmd_input {
 
 __thread struct tracecmd_input *tracecmd_curr_thread_handle;
 
+void tracecmd_set_flag(struct tracecmd_input *handle, int flag)
+{
+        handle->flags |= flag;
+}
+
+void tracecmd_clear_flag(struct tracecmd_input *handle, int flag)
+{
+        handle->flags &= ~flag;
+}
+
 #if DEBUG_RECORD
 static void remove_record(struct page *page, struct record *record)
 {
@@ -1998,6 +2009,8 @@ static int handle_options(struct tracecmd_input *handle)
                          * gtod. It is stored as ASCII with '0x'
                          * appended.
                          */
+                        if (handle->flags & TRACECMD_FL_IGNORE_DATE)
+                                break;
                         offset = strtoll(buf, NULL, 0);
                         /* Convert from micro to nano */
                         offset *= 1000;
diff --git a/trace-read.c b/trace-read.c
index 2e45bff..71a58be 100644
--- a/trace-read.c
+++ b/trace-read.c
@@ -826,6 +826,7 @@ static void process_plugin_option(char *option)
 }
 
 enum {
+        OPT_nodate      = 251,
         OPT_check_event_parsing = 252,
         OPT_kallsyms    = 253,
         OPT_events      = 254,
@@ -847,6 +848,7 @@ void trace_report (int argc, char **argv)
         int show_events = 0;
         int print_events = 0;
         int test_filters = 0;
+        int no_date = 0;
         int raw = 0;
         int neg = 0;
         int ret = 0;
@@ -873,6 +875,7 @@ void trace_report (int argc, char **argv)
                         {"kallsyms", required_argument, NULL, OPT_kallsyms},
                         {"check-events", no_argument, NULL,
                                 OPT_check_event_parsing},
+                        {"nodate", no_argument, NULL, OPT_nodate},
                         {"help", no_argument, NULL, '?'},
                         {NULL, 0, NULL, 0}
                 };
@@ -956,6 +959,9 @@ void trace_report (int argc, char **argv)
                 case OPT_check_event_parsing:
                         check_event_parsing = 1;
                         break;
+                case OPT_nodate:
+                        no_date = 1;
+                        break;
                 default:
                         usage(argv);
                 }
@@ -981,6 +987,9 @@ void trace_report (int argc, char **argv)
                         die("error reading header for %s", inputs->file);
                 add_handle(handle, inputs->file);
 
+                if (no_date)
+                        tracecmd_set_flag(handle, TRACECMD_FL_IGNORE_DATE);
+
                 page_size = tracecmd_page_size(handle);
 
                 if (show_page_size) {