Re: [yocto] [V2][PATCH 0/4]lttng-2.0 new recipe

Zumeng Chen Mon, 09 Jan 2012 19:22:46 -0800

于 2012年01月10日 02:02, Darren Hart 写道:


On 01/09/2012 01:24 AM, Zumeng Chen wrote:

This patchset adds support for lttng-2.0, including the folloing
four bb files:
   babeltrace_0.8.bb
   lttng-modules_v2.0.pre11.bb
   lttng-tools_2.0-pre16.bb
   lttng-ust_1.9.4.bb
And two patches for smoothly compiling:
   lttng-modules-replace-KERNELDIR-with-KERNEL_SRC.patch
   lttng-tools-fix-compiling-error-for-powerpc-arm.patch

V2 Changes vs V0:
   1) fixed all comments from Darren;
   2) A build test passed;

Have you done any runtime testing using this series?

No, since we don't change anything actual codes
from that point.

   3) Highlight for the relationship between lttng-2.0 vs lttng
      It seems no objection from all.

There is a clear description of the LTTng 2.0 architecture in the
followiing site:
   http://lttng.org/sites/lttng.org/files/LTTng2_0Architecture_pa3.pdf

Currently lttng-2.0 is still in pre-release phrase, so I add this
into the patch header for reminder. And another goal of this RR
is intended to bring forward the following issues:

   lttng-2.0 has been added into recipies-kernel, which coexisted
   with lttng(the previous version), because there are some mainly
   changes from lttng-control to lttng-tools, which both monitors
   tracepoints and dynamic probes from kernel and userspace. But
   I'm not sure if we should remove the previous version lttng.
   My suggestion is to preserve for 2.6.37 kernel :-)

Agreed, we need to keep lttng around for the time being.

OK, thanks Darren for your confirmation.

lttng-2.0 supports lttng-modules extra builds, which don't need
any patches on Linux kernel vs the previous version of lttng.
As described in README of lttng-modules-2.0, so far, it has been
tested in current 3.0 kernel on x86 32/64-bit, and powerpc 32-bit,
, build tested on ARM. So the related tests on qemux86 and qemuppc
has been validated and a build test on qemuarm passed too with
this patcheset.

Babeltrace provides as a trace converter, which used to convert
LTTng 2.0 traces into human-readable log(see below example for
qemuppc)

This sort of information would be useful in the patch commit messages.
This all gets lost once the patches are committed.

OK, I'll take them into the lttng-modules patch header.

Regards,
Zumeng

--
Darren

lttng-ust_1.9.4 is Linux Trace Toolkit 2.0 Userspace Tracer.

I'm still keep an eye on the development of lttng for updates.

Regard,
Zumeng

root@qemuppc:/# lttng list  -k
Kernel events:
-------------
       sched_kthread_stop (type: tracepoint)
       sched_kthread_stop_ret (type: tracepoint)
       sched_wakeup (type: tracepoint)
       sched_wakeup_new (type: tracepoint)
       sched_switch (type: tracepoint)
       sched_migrate_task (type: tracepoint)
       sched_process_free (type: tracepoint)
       sched_process_exit (type: tracepoint)
       sched_wait_task (type: tracepoint)
       sched_process_wait (type: tracepoint)
       sched_process_fork (type: tracepoint)
       sched_stat_wait (type: tracepoint)
       sched_stat_sleep (type: tracepoint)
       sched_stat_iowait (type: tracepoint)
       sched_stat_runtime (type: tracepoint)
       sched_pi_setprio (type: tracepoint)
       irq_handler_entry (type: tracepoint)
       irq_handler_exit (type: tracepoint)
       softirq_entry (type: tracepoint)
       softirq_exit (type: tracepoint)
       softirq_raise (type: tracepoint) [disabled]
        (type: tracepoint) [disabled]
        (type: tracepoint) [disabled]
        (type: tracepoint) [disabled]
        (type: tracepoint) [disabled]
        (type: tracepoint) [disabled]
        (type: tracepoint) [disabled]
        (type: tracepoint) [disabled]
        (type: tracepoint) [disabled]
        (type: tracepoint) [disabled]
        (type: tracepoint) [disabled]
        (type: tracepoint) [disabled]
        (type: tracepoint) [disabled]
        (type: tracepoint) [disabled]
        (type: tracepoint) [disabled]
        (type: tracepoint) [disabled]
        (type: tracepoint) [disabled]
        (type: tracepoint) [disabled]

root@qemuppc:/# lttng create mysession
Session mysession created.
Traces will be written in /home/root/lttng-traces/mysession-20111230-152610
root@qemuppc:/#  lttng enable-event -a -k
All kernel events are enabled in channel channel0
root@qemuppc:/# lttng enable-event sched_switch,sched_wakeup -k
kernel event sched_switch created in channel channel0
kernel event sched_wakeup created in channel channel0
root@qemuppc:/# lttng enable-event -a -k --tracepoint
All kernel tracepoints are enabled in channel channel0
root@qemuppc:/# lttng add-context -k -e sched_switch -t pid
kernel context pid added to sched_switch event in all channels
root@qemuppc:/# lttng start
Tracing started for session mysession
root@qemuppc:/#  lttng list -u
UST events:
-------------
None

root@qemuppc:/# lttng stop
Tracing stopped for session mysession
root@qemuppc:/# lttng list -u
UST events:
-------------
None

root@qemuppc:/# uname -a
Linux qemuppc 3.0.12-yocto-standard+ #1 PREEMPT Thu Dec 29 22:23:52 CST 2011 
ppc GNU/Linux
root@qemuppc:/#
root@qemuppc:/# babeltrace /home/root/lttng-traces/mysession-20111230-152610 | 
less
[2078772597067] softirq_raise: { 0 }, { vec = 1 }
[2078773657367] softirq_raise: { 0 }, { vec = 9 }
[2078773943557] sched_stat_runtime: { 0 }, { comm = "lttng-sessiond", tid = 
404, runtime = 5104592, vruntime = 61173667721 }
[2078774051587] softirq_entry: { 0 }, { vec = 1 }
[2078774081797] softirq_exit: { 0 }, { vec = 1 }
[2078774086557] softirq_entry: { 0 }, { vec = 9 }
[2078774094247] softirq_exit: { 0 }, { vec = 9 }
[2078774105437] sched_stat_runtime: { 0 }, { comm = "lttng-sessiond", tid = 
404, runtime = 230192, vruntime = 61173897913 }
[2078774185387] sched_stat_wait: { 0 }, { comm = "lttng-consumerd", tid = 418, 
delay = 5334784 }
[2078774328677] sched_switch: { 0 }, 385, { prev_comm = "lttng-sessiond", prev_tid = 404, 
prev_prio = 20, prev_state = 0, next_comm = "lttng-consumerd", next_tid = 418, next_prio 
= 20 }
[2078774802747] exit_syscall: { 0 }, { ret = 1 }
[2078774968937] sys_unknown: { 0 }, { id = 102, args = [ [0] = 17, [1] = 
1218120660, [2] = 0, [3] = 268526120, [4] = 32, [5] = 4294967232 ] }
[2078775075597] exit_syscall: { 0 }, { ret = 4136 }
[2078775109747] sys_unknown: { 0 }, { id = 167, args = [ [0] = 1218124968, [1] 
= 2, [2] = 4294967295, [3] = 268526120, [4] = 32, [5] = 4294967232 ] }
[2078775130867] exit_syscall: { 0 }, { ret = 1 }
[2078775339007] sys_unknown: { 0 }, { id = 102, args = [ [0] = 17, [1] = 
1218120612, [2] = 0, [3] = 268526120, [4] = 32, [5] = 4294967232 ] }
[2078776095757] exit_syscall: { 0 }, { ret = 1 }
[2078776238357] softirq_raise: { 0 }, { vec = 1 }
[2078776245827] softirq_raise: { 0 }, { vec = 9 }
[2078776265487] sched_stat_runtime: { 0 }, { comm = "lttng-consumerd", tid = 
418, runtime = 2149408, vruntime = 61169846169 }
[2078776291187] softirq_entry: { 0 }, { vec = 1 }
[2078776306217] softirq_exit: { 0 }, { vec = 1 }
[2078776310607] softirq_entry: { 0 }, { vec = 9 }
[2078776317337] softirq_exit: { 0 }, { vec = 9 }
....snip..........................

The following changes since commit 5797feac5f06f5cc363869cd440b82b3eaafd456:

   image-mklibs/package_ipk: Remove bashisms (2012-01-05 22:26:25 +0000)

are available in the git repository at:
   git://git.pokylinux.org/poky-contrib zumeng/lttng-2.0
   http://git.pokylinux.org/cgit.cgi/poky-contrib/log/?h=zumeng/lttng-2.0

Zumeng Chen (4):
   lttng-ust: Integrate into yocto linux
   lttng-tools: Integrated from git repo.
   lttng-modules: from lttng-modules 2.0 git repo.
   babeltrace: Integrated from version 0.8

  meta/recipes-kernel/lttng-2.0/babeltrace_0.8.bb    |   30 ++++++++++++++
  ...modules-replace-KERNELDIR-with-KERNEL_SRC.patch |   41 ++++++++++++++++++++
  .../lttng-2.0/lttng-modules_v2.0.pre11.bb          |   23 +++++++++++
  ...-compiling-error-for-powerpc-arm-and-mips.patch |   23 +++++++++++
  .../lttng-2.0/lttng-tools_2.0-pre16.bb             |   24 +++++++++++
  meta/recipes-kernel/lttng-2.0/lttng-ust_1.9.4.bb   |   23 +++++++++++
  6 files changed, 164 insertions(+), 0 deletions(-)
  create mode 100644 meta/recipes-kernel/lttng-2.0/babeltrace_0.8.bb
  create mode 100644 
meta/recipes-kernel/lttng-2.0/lttng-modules-replace-KERNELDIR-with-KERNEL_SRC.patch
  create mode 100644 meta/recipes-kernel/lttng-2.0/lttng-modules_v2.0.pre11.bb
  create mode 100644 
meta/recipes-kernel/lttng-2.0/lttng-tools-fix-compiling-error-for-powerpc-arm-and-mips.patch
  create mode 100644 meta/recipes-kernel/lttng-2.0/lttng-tools_2.0-pre16.bb
  create mode 100644 meta/recipes-kernel/lttng-2.0/lttng-ust_1.9.4.bb


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Re: [yocto] [V2][PATCH 0/4]lttng-2.0 new recipe

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