[PATCH RESEND 0/3] perf tools: Add support for ETMv3/PTM1.1 decoding
From: Mathieu Poirier
Date: Tue Dec 04 2018 - 15:39:09 EST
Hi Arnaldo,
This is a resend of a set previously published in November [1]. It adds support
for ETMv3/PTM1.1 trace decoding. The work has been tested on TC2 and
ST-Microelectronics' mp157c-ev1 boards. It also applies cleanly to your
perf/core branch [2] and does not affect results yielded by "perf test".
If it is already in your set of patches to apply, please disregard and delete.
Otherwise I would appreciate if you could consider adding to your next branch
for the 4.21 cycle.
*** Before this set ***
$ perf report --stdio
# To display the perf.data header info, please use --header/--header-only options.
#
DCD_ETMV4_0020 : 0x0003 (OCSD_ERR_NOT_INIT) [Component not initialised.]; No decoder configuration information
DCD_ETMV4_0022 : 0x0003 (OCSD_ERR_NOT_INIT) [Component not initialised.]; No decoder configuration information
DCD_ETMV4_0024 : 0x0003 (OCSD_ERR_NOT_INIT) [Component not initialised.]; No decoder configuration information
DCD_ETMV4_0020 : 0x0003 (OCSD_ERR_NOT_INIT) [Component not initialised.]; No decoder configuration information
DCD_ETMV4_0022 : 0x0003 (OCSD_ERR_NOT_INIT) [Component not initialised.]; No decoder configuration information
DCD_ETMV4_0024 : 0x0003 (OCSD_ERR_NOT_INIT) [Component not initialised.]; No decoder configuration information
Warning:
AUX data lost 2 times out of 2!
Error:
The perf.data file has no samples!
*** After this set ***
$ perf report --stdio
[...]
# Samples: 12K of event 'branches'
# Event count (approx.): 12049
#
# Children Self Command Shared Object Symbol
# ........ ........ ....... ................ .......................
#
28.18% 28.18% uname libc-2.19.so [.] strcmp
9.13% 9.13% uname libc-2.19.so [.] strcpy
7.87% 7.87% uname libc-2.19.so [.] strnlen
5.58% 5.58% uname libc-2.19.so [.] strlen
2.24% 2.24% uname libc-2.19.so [.] __rawmemchr
1.91% 1.91% uname ld-2.19.so [.] 0x000000000001156a
1.49% 1.49% uname libc-2.19.so [.] __argz_stringify
1.46% 1.46% uname libc-2.19.so [.] malloc
0.96% 0.96% uname libc-2.19.so [.] 0x0000000000054770
0.91% 0.91% uname libc-2.19.so [.] 0x000000000002430a
0.85% 0.85% uname ld-2.19.so [.] 0x0000000000007244
0.83% 0.83% uname libc-2.19.so [.] __stpcpy
[...]
Regards,
Mathieu
[1]. https://lkml.org/lkml/2018/11/16/884
[2]. 34434e3633de tools lib traceevent: traceevent API cleanup
Mathieu Poirier (3):
perf tools: Add configuration for ETMv3 trace protocol
perf tools: Add support for ETMv3 trace decoding
perf tools: Add support for PTMv1.1 decoding
tools/perf/util/cs-etm-decoder/cs-etm-decoder.c | 31 +++++++++++
tools/perf/util/cs-etm-decoder/cs-etm-decoder.h | 9 +++
tools/perf/util/cs-etm.c | 73 ++++++++++++++++++++-----
3 files changed, 99 insertions(+), 14 deletions(-)
--
2.7.4