5 files changed, 6 insertions, 6 deletions

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 5afcfecb4bc2..eac2824a18ab 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -4411,7 +4411,7 @@ static int trace_set_options(struct trace_array *tr, char *option)
 
         cmp = strstrip(option);
 
-        if (strncmp(cmp, "no", 2) == 0) {
+        if (str_has_prefix(cmp, "no")) {
                 neg = 1;
                 cmp += 2;
         }
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index bd0162c0467c..5b3b0c3c8a47 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -1251,7 +1251,7 @@ static int f_show(struct seq_file *m, void *v)
          */
         array_descriptor = strchr(field->type, '[');
 
-        if (!strncmp(field->type, "__data_loc", 10))
+        if (str_has_prefix(field->type, "__data_loc"))
                 array_descriptor = NULL;
 
         if (!array_descriptor)
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index 9d590138f870..0d878dcd1e4b 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -518,7 +518,7 @@ static int synth_event_define_fields(struct trace_event_call *call)
 
 static bool synth_field_signed(char *type)
 {
-        if (strncmp(type, "u", 1) == 0)
+        if (str_has_prefix(type, "u"))
                 return false;
 
         return true;
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, &param);
diff --git a/kernel/trace/trace_stack.c b/kernel/trace/trace_stack.c
index e2a153fc1afc..3641f28c343f 100644
--- a/kernel/trace/trace_stack.c
+++ b/kernel/trace/trace_stack.c
@@ -448,7 +448,7 @@ static char stack_trace_filter_buf[COMMAND_LINE_SIZE+1] __initdata;
 
 static __init int enable_stacktrace(char *str)
 {
-        if (strncmp(str, "_filter=", 8) == 0)
+        if (str_has_prefix(str, "_filter="))
                 strncpy(stack_trace_filter_buf, str+8, COMMAND_LINE_SIZE);
 
         stack_tracer_enabled = 1;