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Diffstat (limited to 'kernel/trace')
-rw-r--r--kernel/trace/trace_kprobe.c41
-rw-r--r--kernel/trace/trace_ksym.c5
2 files changed, 33 insertions, 13 deletions
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
index aff5f80b59b8..b52d397e57eb 100644
--- a/kernel/trace/trace_kprobe.c
+++ b/kernel/trace/trace_kprobe.c
@@ -606,23 +606,22 @@ static int create_trace_probe(int argc, char **argv)
606 */ 606 */
607 struct trace_probe *tp; 607 struct trace_probe *tp;
608 int i, ret = 0; 608 int i, ret = 0;
609 int is_return = 0; 609 int is_return = 0, is_delete = 0;
610 char *symbol = NULL, *event = NULL, *arg = NULL, *group = NULL; 610 char *symbol = NULL, *event = NULL, *arg = NULL, *group = NULL;
611 unsigned long offset = 0; 611 unsigned long offset = 0;
612 void *addr = NULL; 612 void *addr = NULL;
613 char buf[MAX_EVENT_NAME_LEN]; 613 char buf[MAX_EVENT_NAME_LEN];
614 614
615 if (argc < 2) { 615 /* argc must be >= 1 */
616 pr_info("Probe point is not specified.\n");
617 return -EINVAL;
618 }
619
620 if (argv[0][0] == 'p') 616 if (argv[0][0] == 'p')
621 is_return = 0; 617 is_return = 0;
622 else if (argv[0][0] == 'r') 618 else if (argv[0][0] == 'r')
623 is_return = 1; 619 is_return = 1;
620 else if (argv[0][0] == '-')
621 is_delete = 1;
624 else { 622 else {
625 pr_info("Probe definition must be started with 'p' or 'r'.\n"); 623 pr_info("Probe definition must be started with 'p', 'r' or"
624 " '-'.\n");
626 return -EINVAL; 625 return -EINVAL;
627 } 626 }
628 627
@@ -642,7 +641,29 @@ static int create_trace_probe(int argc, char **argv)
642 return -EINVAL; 641 return -EINVAL;
643 } 642 }
644 } 643 }
644 if (!group)
645 group = KPROBE_EVENT_SYSTEM;
645 646
647 if (is_delete) {
648 if (!event) {
649 pr_info("Delete command needs an event name.\n");
650 return -EINVAL;
651 }
652 tp = find_probe_event(event, group);
653 if (!tp) {
654 pr_info("Event %s/%s doesn't exist.\n", group, event);
655 return -ENOENT;
656 }
657 /* delete an event */
658 unregister_trace_probe(tp);
659 free_trace_probe(tp);
660 return 0;
661 }
662
663 if (argc < 2) {
664 pr_info("Probe point is not specified.\n");
665 return -EINVAL;
666 }
646 if (isdigit(argv[1][0])) { 667 if (isdigit(argv[1][0])) {
647 if (is_return) { 668 if (is_return) {
648 pr_info("Return probe point must be a symbol.\n"); 669 pr_info("Return probe point must be a symbol.\n");
@@ -671,8 +692,6 @@ static int create_trace_probe(int argc, char **argv)
671 argc -= 2; argv += 2; 692 argc -= 2; argv += 2;
672 693
673 /* setup a probe */ 694 /* setup a probe */
674 if (!group)
675 group = KPROBE_EVENT_SYSTEM;
676 if (!event) { 695 if (!event) {
677 /* Make a new event name */ 696 /* Make a new event name */
678 if (symbol) 697 if (symbol)
@@ -1114,7 +1133,7 @@ static int kprobe_event_define_fields(struct ftrace_event_call *event_call)
1114 struct trace_probe *tp = (struct trace_probe *)event_call->data; 1133 struct trace_probe *tp = (struct trace_probe *)event_call->data;
1115 1134
1116 ret = trace_define_common_fields(event_call); 1135 ret = trace_define_common_fields(event_call);
1117 if (!ret) 1136 if (ret)
1118 return ret; 1137 return ret;
1119 1138
1120 DEFINE_FIELD(unsigned long, ip, FIELD_STRING_IP, 0); 1139 DEFINE_FIELD(unsigned long, ip, FIELD_STRING_IP, 0);
@@ -1132,7 +1151,7 @@ static int kretprobe_event_define_fields(struct ftrace_event_call *event_call)
1132 struct trace_probe *tp = (struct trace_probe *)event_call->data; 1151 struct trace_probe *tp = (struct trace_probe *)event_call->data;
1133 1152
1134 ret = trace_define_common_fields(event_call); 1153 ret = trace_define_common_fields(event_call);
1135 if (!ret) 1154 if (ret)
1136 return ret; 1155 return ret;
1137 1156
1138 DEFINE_FIELD(unsigned long, func, FIELD_STRING_FUNC, 0); 1157 DEFINE_FIELD(unsigned long, func, FIELD_STRING_FUNC, 0);
diff --git a/kernel/trace/trace_ksym.c b/kernel/trace/trace_ksym.c
index ddfa0fd43bc0..acb87d4a4ac1 100644
--- a/kernel/trace/trace_ksym.c
+++ b/kernel/trace/trace_ksym.c
@@ -79,11 +79,12 @@ void ksym_collect_stats(unsigned long hbp_hit_addr)
79} 79}
80#endif /* CONFIG_PROFILE_KSYM_TRACER */ 80#endif /* CONFIG_PROFILE_KSYM_TRACER */
81 81
82void ksym_hbp_handler(struct perf_event *hbp, void *data) 82void ksym_hbp_handler(struct perf_event *hbp, int nmi,
83 struct perf_sample_data *data,
84 struct pt_regs *regs)
83{ 85{
84 struct ring_buffer_event *event; 86 struct ring_buffer_event *event;
85 struct ksym_trace_entry *entry; 87 struct ksym_trace_entry *entry;
86 struct pt_regs *regs = data;
87 struct ring_buffer *buffer; 88 struct ring_buffer *buffer;
88 int pc; 89 int pc;
89 90