Patchwork [0/1] lttng-2.0 fixes

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Submitter Tom Zanussi
Date Oct. 12, 2012, 7:52 p.m.
Message ID <cover.1350070372.git.tom.zanussi@intel.com>
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Permalink /patch/38131/
State New
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Pull-request

git://git.yoctoproject.org/poky-contrib.git tzanussi/lttng-fixes.0

Comments

Tom Zanussi - Oct. 12, 2012, 7:52 p.m.
From: Tom Zanussi <tom.zanussi@intel.com>

When trying out the current lttng-2.0, I found that it didn't work in
its current state.  This patch makes it work again, or at least a
a quick test on qemux86 works:

Before:

root@qemux86:~# lttng create
Spawning a session daemon
FATAL: Module lttng-tracer not found.
Error: Unable to load module lttng-tracer
Error: Unable to remove module lttng-tracer
Warning: No kernel tracer available
Session auto-20121012-190712 created.
Traces will be written in /home/root/lttng-traces/auto-20121012-190712

After:

root@qemux86:~# lttng create
Spawning a session daemon
Session auto-20121012-192342 created.
Traces will be written in /home/root/lttng-traces/auto-20121012-192342
root@qemux86:~# lttng enable-event --kernel --all
All kernel events are enabled in channel channel0
root@qemux86:~# lttng start
Tracing started for session auto-20121012-192342
root@qemux86:~# lttng stop
Tracing stopped for session auto-20121012-192342
root@qemux86:~# lttng view
[19:27:01.661844467] (+?.?????????) hrtimer_cancel: { 0 }, { hrtimer = 3354328992 }
[19:27:01.661854316] (+0.000009849) hrtimer_expire_entry: { 0 }, { hrtimer = 3354328992, now = \
318684045266, function = 3238494992 }
[19:27:01.661870669] (+0.000016353) softirq_raise: { 0 }, { vec = 1 }
[19:27:01.661876340] (+0.000005671) softirq_raise: { 0 }, { vec = 9 }
[19:27:01.661887892] (+0.000011552) sched_stat_runtime: { 0 }, { comm = "lttng-sessiond", tid =


The following changes since commit 0260bb5c6978839c068007fcff2f704937805faf:

  gitignore: Fix for poky repository (2012-10-11 13:52:14 +0100)

are available in the git repository at:

  git://git.yoctoproject.org/poky-contrib.git tzanussi/lttng-fixes.0
  http://git.yoctoproject.org/cgit/cgit.cgi/poky-contrib/log/?h=tzanussi/lttng-fixes.0

Tom Zanussi (2):
  lttng-modules: update SRCREV and remove is_compat_task patch

 ...ls-protect-is_compat_task-from-redefiniti.patch | 41 ----------------------
 .../lttng-2.0/lttng-modules_2.0.5.bb               |  9 +++--
 2 files changed, 9 insertions(+), 50 deletions(-)
 delete mode 100644 meta/recipes-kernel/lttng-2.0/lttng-modules/lttng-sycalls-protect-is_compat_task-from-redefiniti.patch
Bruce Ashfield - Oct. 12, 2012, 8:13 p.m.
On 12-10-12 03:52 PM, tom.zanussi@intel.com wrote:
> From: Tom Zanussi<tom.zanussi@intel.com>
>
> When trying out the current lttng-2.0, I found that it didn't work in
> its current state.  This patch makes it work again, or at least a
> a quick test on qemux86 works:
>
> Before:
>
> root@qemux86:~# lttng create
> Spawning a session daemon
> FATAL: Module lttng-tracer not found.
> Error: Unable to load module lttng-tracer
> Error: Unable to remove module lttng-tracer
> Warning: No kernel tracer available
> Session auto-20121012-190712 created.
> Traces will be written in /home/root/lttng-traces/auto-20121012-190712
>
> After:
>
> root@qemux86:~# lttng create
> Spawning a session daemon
> Session auto-20121012-192342 created.
> Traces will be written in /home/root/lttng-traces/auto-20121012-192342
> root@qemux86:~# lttng enable-event --kernel --all
> All kernel events are enabled in channel channel0
> root@qemux86:~# lttng start
> Tracing started for session auto-20121012-192342
> root@qemux86:~# lttng stop
> Tracing stopped for session auto-20121012-192342
> root@qemux86:~# lttng view
> [19:27:01.661844467] (+?.?????????) hrtimer_cancel: { 0 }, { hrtimer = 3354328992 }
> [19:27:01.661854316] (+0.000009849) hrtimer_expire_entry: { 0 }, { hrtimer = 3354328992, now = \
> 318684045266, function = 3238494992 }
> [19:27:01.661870669] (+0.000016353) softirq_raise: { 0 }, { vec = 1 }
> [19:27:01.661876340] (+0.000005671) softirq_raise: { 0 }, { vec = 9 }
> [19:27:01.661887892] (+0.000011552) sched_stat_runtime: { 0 }, { comm = "lttng-sessiond", tid =
>
>

That's what I'd expect.

Looks good from here.

Bruce

> The following changes since commit 0260bb5c6978839c068007fcff2f704937805faf:
>
>    gitignore: Fix for poky repository (2012-10-11 13:52:14 +0100)
>
> are available in the git repository at:
>
>    git://git.yoctoproject.org/poky-contrib.git tzanussi/lttng-fixes.0
>    http://git.yoctoproject.org/cgit/cgit.cgi/poky-contrib/log/?h=tzanussi/lttng-fixes.0
>
> Tom Zanussi (2):
>    lttng-modules: update SRCREV and remove is_compat_task patch
>
>   ...ls-protect-is_compat_task-from-redefiniti.patch | 41 ----------------------
>   .../lttng-2.0/lttng-modules_2.0.5.bb               |  9 +++--
>   2 files changed, 9 insertions(+), 50 deletions(-)
>   delete mode 100644 meta/recipes-kernel/lttng-2.0/lttng-modules/lttng-sycalls-protect-is_compat_task-from-redefiniti.patch
>