diff options
| author | Joel Fernandes <joelaf@google.com> | 2017-06-26 07:38:43 +0200 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2017-06-27 19:30:28 +0200 |
| commit | 441dae8f2f2975c68101a84bc3f528ec95ecf7c3 (patch) | |
| tree | 0f16d4550fafdff2718a33b7cc99ba8ab3391794 /kernel/trace/trace_output.c | |
| parent | tracing: Add support for recording tgid of tasks (diff) | |
| download | linux-441dae8f2f2975c68101a84bc3f528ec95ecf7c3.tar.xz linux-441dae8f2f2975c68101a84bc3f528ec95ecf7c3.zip | |
tracing: Add support for display of tgid in trace output
Earlier patches introduced ability to record the tgid using the 'record-tgid'
option. Here we read the tgid and output it if the option is enabled.
Link: http://lkml.kernel.org/r/20170626053844.5746-3-joelaf@google.com
Cc: kernel-team@android.com
Cc: Ingo Molnar <mingo@redhat.com>
Tested-by: Michael Sartain <mikesart@gmail.com>
Signed-off-by: Joel Fernandes <joelaf@google.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_output.c')
| -rw-r--r-- | kernel/trace/trace_output.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c index 01ff99969ca7..bac629af2285 100644 --- a/kernel/trace/trace_output.c +++ b/kernel/trace/trace_output.c @@ -597,6 +597,15 @@ int trace_print_context(struct trace_iterator *iter) trace_seq_printf(s, "%16s-%-5d [%03d] ", comm, entry->pid, iter->cpu); + if (tr->trace_flags & TRACE_ITER_RECORD_TGID) { + unsigned int tgid = trace_find_tgid(entry->pid); + + if (!tgid) + trace_seq_printf(s, "(-----) "); + else + trace_seq_printf(s, "(%5d) ", tgid); + } + if (tr->trace_flags & TRACE_ITER_IRQ_INFO) trace_print_lat_fmt(s, entry); |