diff options
Diffstat (limited to 'kernel/trace/trace_kprobe.c')
| -rw-r--r-- | kernel/trace/trace_kprobe.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c index f43098bf62dd..18c4175b6585 100644 --- a/kernel/trace/trace_kprobe.c +++ b/kernel/trace/trace_kprobe.c @@ -137,13 +137,36 @@ static bool trace_kprobe_is_busy(struct dyn_event *ev) return trace_probe_is_enabled(&tk->tp); } +static bool trace_kprobe_match_command_head(struct trace_kprobe *tk, + int argc, const char **argv) +{ + char buf[MAX_ARGSTR_LEN + 1]; + + if (!argc) + return true; + + if (!tk->symbol) + snprintf(buf, sizeof(buf), "0x%p", tk->rp.kp.addr); + else if (tk->rp.kp.offset) + snprintf(buf, sizeof(buf), "%s+%u", + trace_kprobe_symbol(tk), tk->rp.kp.offset); + else + snprintf(buf, sizeof(buf), "%s", trace_kprobe_symbol(tk)); + if (strcmp(buf, argv[0])) + return false; + argc--; argv++; + + return trace_probe_match_command_args(&tk->tp, argc, argv); +} + static bool trace_kprobe_match(const char *system, const char *event, int argc, const char **argv, struct dyn_event *ev) { struct trace_kprobe *tk = to_trace_kprobe(ev); return strcmp(trace_probe_name(&tk->tp), event) == 0 && - (!system || strcmp(trace_probe_group_name(&tk->tp), system) == 0); + (!system || strcmp(trace_probe_group_name(&tk->tp), system) == 0) && + trace_kprobe_match_command_head(tk, argc, argv); } static nokprobe_inline unsigned long trace_kprobe_nhit(struct trace_kprobe *tk) |