linux-kernel - [PATCH] trace-cmd: fix report not working with instances

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Date:	Tue, 14 Jul 2015 11:01:04 -0400
From:	Josef Bacik <jbacik@...com>
To:	<linux-kernel@...r.kernel.org>, <kernel-team@...com>,
	<rostedt@...dmis.org>
Subject: [PATCH] trace-cmd: fix report not working with instances

We unconditionally call trace_init_profile in read_data_info, even if we don't
have profile set.  This causes trace-cmd report to fail out if you recorded
using instances because the profile stuff doesn't find the handle for the
instance when it does the record.  So do 2 things

1) Only call trace_init_profile if we actually specified --profile.

2) Make sure to call trace_init_profile for all of the instance handles so that
we get all the info we want and don't bail out.

With this patch I can now do trace-cmd report on a trace.dat file that only had
events in instances.  Thanks,

Signed-off-by: Josef Bacik <jbacik@...com>
---
 trace-read.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/trace-read.c b/trace-read.c
index 103bc0c..50e7a5d 100644
--- a/trace-read.c
+++ b/trace-read.c
@@ -1066,7 +1066,6 @@ static void read_data_info(struct list_head *handle_list, enum output_type otype
 			last_hook->next = tracecmd_hooks(handles->handle);
 		else
 			hooks = tracecmd_hooks(handles->handle);
-		trace_init_profile(handles->handle, hooks, global);

 		process_filters(handles);

@@ -1087,7 +1086,11 @@ static void read_data_info(struct list_head *handle_list, enum output_type otype
 					continue;
 				}
 				add_handle(new_handle, name);
+				if (profile)
+					trace_init_profile(new_handle, hooks, global);
 			}
+		} else if (profile) {
+			trace_init_profile(handles->handle, hooks, global);
 		}
 	}

-- 
2.1.0

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