linux-kernel - Re: [PATCH v2 0/7] perf ctf: Convert comm, fork and exit events to CTF

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Message-ID: <20160624122907.GF10142@krava>
Date:	Fri, 24 Jun 2016 14:29:07 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Wang Nan <wangnan0@...wei.com>
Cc:	acme@...nel.org, linux-kernel@...r.kernel.org, pi3orama@....com,
	lizefan@...wei.com
Subject: Re: [PATCH v2 0/7] perf ctf: Convert comm, fork and exit events to
 CTF

On Fri, Jun 24, 2016 at 11:22:05AM +0000, Wang Nan wrote:
> After converting perf.data to CTF, we lost pid-tid-comm mapping. Which
> makes inconvience. For example, in perf script output we know which
> process issue an event like this:
> 
>  compiz 19361 [001] 3275709.313929:  raw_syscalls:sys_exit: NR 7 = 0
> 
> After converting to CTF, we only get this:
> 
>   [3275709.313929985] (+0.110646118) raw_syscalls:sys_exit: { cpu_id = 1 }, { perf_ip = 0xFFFFFFFF8107B2E8, perf_tid = 19361, perf_pid = 19361, perf_id = 18920, perf_period = 1, common_type = 16, common_flags = 0, common_preempt_count = 1, common_pid = 19361, id = 7, ret = 0 }
> 
> Currently, if we want to find the name and parent of a process, we
> have to collect 'sched:sched_switch' event.
> 
> This patch set adds a '--all' option to 'perf convert', converts comm,
> fork and exit events to CTF output. CTF user now can track the mapping
> by their own.
> 
> v1 -> v2: Report number of sample and non-sample events when finish.
>           rename opts.non_sample to opts.all.
> 
> Wang Nan (7):
>   perf ctf: Add value_set_string() helper
>   perf ctf: Pass convert options through opts structure
>   perf ctf: Add 'all' option
>   perf ctf: Prepare collect non-sample events
>   perf ctf: Generate comm event to CTF output
>   perf ctf: Add '--all' option for 'perf data convert'
>   perf ctf: Generate fork and exit events to CTF output

I can't compile unless I can include config.h

[jolsa@...va perf]$ make LIBBABELTRACE_DIR=/opt/libbabeltrace/ LIBBABELTRACE=1
  BUILD:   Doing 'make -j4' parallel build
  CC       util/data-convert-bt.o
util/data-convert-bt.c: In function ‘convert__config’:
util/data-convert-bt.c:1299:19: error: implicit declaration of function ‘perf_config_u64’ [-Werror=implicit-function-declaration]
   c->queue_size = perf_config_u64(var, value);
                   ^
util/data-convert-bt.c:1299:3: error: nested extern declaration of ‘perf_config_u64’ [-Werror=nested-externs]
   c->queue_size = perf_config_u64(var, value);
   ^
util/data-convert-bt.c: In function ‘bt_convert__perf2ctf’:
util/data-convert-bt.c:1332:2: error: implicit declaration of function ‘perf_config’ [-Werror=implicit-function-declaration]
  perf_config(convert__config, &c);
  ^
util/data-convert-bt.c:1332:2: error: nested extern declaration of ‘perf_config’ [-Werror=nested-externs]
cc1: all warnings being treated as errors


your compiler's not that strict I guess ;-)
I'll post it shortly

jirka

---
diff --git a/tools/perf/util/data-convert-bt.c b/tools/perf/util/data-convert-bt.c
index 79082782e7d2..4b68e7b9ee0c 100644
--- a/tools/perf/util/data-convert-bt.c
+++ b/tools/perf/util/data-convert-bt.c
@@ -26,6 +26,7 @@
 #include "evlist.h"
 #include "evsel.h"
 #include "machine.h"
+#include "config.h"
 
 #define pr_N(n, fmt, ...) \
 	eprintf(n, debug_data_convert, fmt, ##__VA_ARGS__)