From 441dae8f2f2975c68101a84bc3f528ec95ecf7c3 Mon Sep 17 00:00:00 2001 From: Joel Fernandes Date: Sun, 25 Jun 2017 22:38:43 -0700 Subject: 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 Tested-by: Michael Sartain Signed-off-by: Joel Fernandes Signed-off-by: Steven Rostedt (VMware) --- kernel/trace/trace_output.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'kernel/trace/trace_output.c') 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); -- cgit v1.2.3