provide usage information

1 files changed, 14 insertions, 4 deletions

diff --git a/src/ft2csv.c b/src/ft2csv.c
index 90d231f..0bfb68c 100644
--- a/src/ft2csv.c
+++ b/src/ft2csv.c
@@ -9,7 +9,7 @@
 
 #include "timestamp.h"
 
-int no_interleaved = 1;
+static int no_interleaved = 0;
 
 static unsigned int complete   = 0;
 static unsigned int incomplete = 0;
@@ -19,7 +19,6 @@ static unsigned int non_rt     = 0;
 static unsigned int interleaved = 0;
 
 static unsigned long long threshold = 2700 * 1000; /* 1 ms == 1 full tick */
-//static unsigned long long threshold = 2700 * 50; /* 1 ms == 1 full tick */
 
 static struct timestamp* next(struct timestamp* start, struct timestamp* end,
                               int cpu)
@@ -122,15 +121,23 @@ static void show_id(struct timestamp* start, struct timestamp* end,
                         show_csv(start, end);
 }
 
+#define USAGE \
+        "Usage: ft2csv [-e]  [-i] <event_name>  <logfile> \n"   \
+        "   -e: endianess swap      -- restores byte order \n"  \
+        "   -i: ignore interleaved  -- ignore samples if start " \
+        "and end are non-consecutive\n"                         \
+        ""
+
 static void die(char* msg)
 {
         if (errno)
                 perror("error: ");
         fprintf(stderr, "%s\n", msg);
+        fprintf(stderr, "%s", USAGE);
         exit(1);
 }
 
-#define OPTS "e"
+#define OPTS "ei"
 
 int main(int argc, char** argv)
 {
@@ -152,6 +159,9 @@ int main(int argc, char** argv)
                 case 'e':
                         swap_byte_order = 1;
                         break;
+                case 'i':
+                        no_interleaved = 1;
+                        break;
                 default:
                         die("Unknown option.");
                         break;
@@ -159,7 +169,7 @@ int main(int argc, char** argv)
         }
 
         if (argc - optind != 2)
-                die("Usage: ft2csv [-e]  <event_name>  <logfile>");
+                die("arguments missing");
         if (map_file(argv[optind + 1], &mapped, &size))
                 die("could not map file");