diff options
| author | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2018-12-20 13:20:07 -0500 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2018-12-22 22:51:54 -0500 |
| commit | b6b2735514bcd70ad1556a33892a636b20ece671 (patch) | |
| tree | a51e1477fef62ca3223c272306ab4162ae23cb05 /kernel/trace/trace_probe.c | |
| parent | 754481e6954cbef53f8bc4412ad48dde611e21d3 (diff) | |
tracing: Use str_has_prefix() instead of using fixed sizes
There are several instances of strncmp(str, "const", 123), where 123 is the
strlen of the const string to check if "const" is the prefix of str. But
this can be error prone. Use str_has_prefix() instead.
Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_probe.c')
| -rw-r--r-- | kernel/trace/trace_probe.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/trace/trace_probe.c b/kernel/trace/trace_probe.c index ff86417c0149..541375737403 100644 --- a/kernel/trace/trace_probe.c +++ b/kernel/trace/trace_probe.c @@ -194,7 +194,7 @@ static int parse_probe_vars(char *arg, const struct fetch_type *t, code->op = FETCH_OP_RETVAL; else ret = -EINVAL; - } else if (strncmp(arg, "stack", 5) == 0) { + } else if (str_has_prefix(arg, "stack")) { if (arg[5] == '\0') { code->op = FETCH_OP_STACKP; } else if (isdigit(arg[5])) { @@ -213,7 +213,7 @@ static int parse_probe_vars(char *arg, const struct fetch_type *t, #ifdef CONFIG_HAVE_FUNCTION_ARG_ACCESS_API } else if (((flags & TPARG_FL_MASK) == (TPARG_FL_KERNEL | TPARG_FL_FENTRY)) && - strncmp(arg, "arg", 3) == 0) { + str_has_prefix(arg, "arg")) { if (!isdigit(arg[3])) return -EINVAL; ret = kstrtoul(arg + 3, 10, ¶m); |