diff options
| -rw-r--r-- | kernel/trace/trace.c | 25 | ||||
| -rw-r--r-- | kernel/trace/trace.h | 3 |
2 files changed, 27 insertions, 1 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 639344a4d3a..1a3d6b32978 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -287,6 +287,7 @@ static const char *trace_options[] = { "annotate", "userstacktrace", "sym-userobj", + "printk-msg-only", NULL }; @@ -2265,6 +2266,25 @@ static enum print_line_t print_hex_fmt(struct trace_iterator *iter) return TRACE_TYPE_HANDLED; } +static enum print_line_t print_printk_msg_only(struct trace_iterator *iter) +{ + struct trace_seq *s = &iter->seq; + struct trace_entry *entry = iter->ent; + struct print_entry *field; + int ret; + + trace_assign_type(field, entry); + + ret = trace_seq_printf(s, field->buf); + if (!ret) + return TRACE_TYPE_PARTIAL_LINE; + + if (entry->flags & TRACE_FLAG_CONT) + trace_seq_print_cont(s, iter); + + return TRACE_TYPE_HANDLED; +} + static enum print_line_t print_bin_fmt(struct trace_iterator *iter) { struct trace_seq *s = &iter->seq; @@ -2345,6 +2365,11 @@ static enum print_line_t print_trace_line(struct trace_iterator *iter) return ret; } + if (iter->ent->type == TRACE_PRINT && + trace_flags & TRACE_ITER_PRINTK && + trace_flags & TRACE_ITER_PRINTK_MSGONLY) + return print_printk_msg_only(iter); + if (trace_flags & TRACE_ITER_BIN) return print_bin_fmt(iter); diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index f07c246dd73..fc75dce7a66 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -578,7 +578,8 @@ enum trace_iterator_flags { TRACE_ITER_BRANCH = 0x1000, TRACE_ITER_ANNOTATE = 0x2000, TRACE_ITER_USERSTACKTRACE = 0x4000, - TRACE_ITER_SYM_USEROBJ = 0x8000 + TRACE_ITER_SYM_USEROBJ = 0x8000, + TRACE_ITER_PRINTK_MSGONLY = 0x10000 }; /* |