If there are 0 or 1 valid record in xentrace file,
SIGFPE will occur. Fix it.
Signed-off-by: Yu Zhiguo <yuzg@cn.fujitsu.com>
diff --git a/tools/misc/gtraceview.c b/tools/misc/gtraceview.c
--- a/tools/misc/gtraceview.c
+++ b/tools/misc/gtraceview.c
@@ -209,6 +209,11 @@
if (load_file(fname))
exit(EXIT_FAILURE);
+ if (!data_cur) {
+ fprintf(stderr, "file %s doesn''t contain any valid
record\n", fname);
+ exit(EXIT_FAILURE);
+ }
+
if (mode_init())
exit(EXIT_FAILURE);
@@ -939,14 +944,15 @@
struct cpu cur_state[MAX_CPU_NR];
uint64_t tsc = start_time;
struct state *state;
- uint64_t number, temp;
+ uint64_t number, temp = 0;
int state_cur = 0;
for (i = 0; i < max_cpu_num; i++)
cur_state[i].flag = FLAG_UNKNOWN;
/* allocate spaces, it may be huge... */
- temp = (data[data_cur-1].tsc - start_time)/time_scale;
+ if (time_scale)
+ temp = (data[data_cur-1].tsc - start_time)/time_scale;
number = 10000UL;
if (temp < number)
number = temp;
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