[OE-core] [PATCH 1/2] lttng-modules: Update revision to grab last bugfix releases

[Bruce Ashfield]

On Wed, Nov 13, 2013 at 8:45 PM, Otavio Salvador
<otavio at ossystems.com.br> wrote:
> On Wed, Nov 13, 2013 at 7:54 PM, Saul Wold <sgw at linux.intel.com> wrote:
>> On 11/01/2013 06:31 AM, Otavio Salvador wrote:
>>>
>>> This updates lttng-modules for 2.3.2 and also includes a bugfix
>>> imported from 3.4 kernel. The changes included are:
>>>
>>> 6c26b01 Blacklist Linux kernels 3.10+
>>> b97d469 LTTng trace-clock: shrink kernel blacklist
>>> 7d40f8e Version 2.3.1
>>> 2aecb9b Blacklist kernels 3.10.13 and 3.11.2
>>> 4f1217f Version 2.3.2
>>> 92fff0c Import fix from LTSI: 3.4+ RT kernels use CONFIG_PREEMPT_RT_FULL
>>> 1874075 lttng-statedump-impl: Fix lttng_list_interrupts for empty
>>> implementation
>>>
>>
>> Otavio,
>>
>> Tried to build this locally and got the following failure with genericx86
>> and master:
>>
>> |   CC [M]
>> /srv/ssd/sgw/builds/world/tmp/work/genericx86-poky-linux/lttng-modules/2.3.2+gitAUTOINC+1874075076-r0/git/lttng-ring-buffer-client-discard.o
>> | In file included from
>> /srv/ssd/sgw/builds/world/tmp/work/genericx86-poky-linux/lttng-modules/2.3.2+gitAUTOINC+1874075076-r0/git/lttng-tracer.h:37:0,
>> |                  from
>> /srv/ssd/sgw/builds/world/tmp/work/genericx86-poky-linux/lttng-modules/2.3.2+gitAUTOINC+1874075076-r0/git/lttng-ring-buffer-client-discard.c:24:
>> |
>> /srv/ssd/sgw/builds/world/tmp/work/genericx86-poky-linux/lttng-modules/2.3.2+gitAUTOINC+1874075076-r0/git/wrapper/trace-clock.h:40:2:
>> error: #error "Linux kernels 3.10 and 3.11 introduce a deadlock in the
>> timekeeping subsystem. Fixed by commit
>> 7bd36014460f793c19e7d6c94dab67b0afcfcb7f \"timekeeping: Fix HRTICK related
>> deadlock from ntp lock changes\" in Linux."
>> |  #error "Linux kernels 3.10 and 3.11 introduce a deadlock in the
>> timekeeping subsystem. Fixed by commit
>> 7bd36014460f793c19e7d6c94dab67b0afcfcb7f \"timekeeping: Fix HRTICK related
>> deadlock from ntp lock changes\" in Linux."
>> |   ^
>> | make[2]: ***
>> [/srv/ssd/sgw/builds/world/tmp/work/genericx86-poky-linux/lttng-modules/2.3.2+gitAUTOINC+1874075076-r0/git/lttng-ring-buffer-client-discard.o]
>> Error 1
>> | make[1]: ***
>> [_module_/srv/ssd/sgw/builds/world/tmp/work/genericx86-poky-linux/lttng-modules/2.3.2+gitAUTOINC+1874075076-r0/git]
>> Error 2
>> | make[1]: Leaving directory
>> `/srv/ssd/sgw/builds/world/tmp/sysroots/genericx86/usr/src/kernel'
>> | make: *** [default] Error 2
>> | ERROR: oe_runmake failed
>>
>> So I am going to hold off on this patch set until you can resolve this.
>
> Yes; this is becase the linux-yocto seems to not have been updated to
>> 3.10.13; so in fact it is failing to build to avoid people to
> trigger the deadlock.
>
> The change which introduces this in lttng-modules is:
>
> http://git.lttng.org/?p=lttng-modules.git;a=commit;h=2aecb9b1cbb63f6c524ad9195d8fd06299ef9296
>
> I can update this patch as 2.3.3 has been released and it includes the
> 3.12 fixes but please check when linux-yocto will be updated so we can
> fix it.

Saul: What board are you building ? I've had linux-yocto on 3.10.17
for over a week
now.

The meta-yocto-bsps need a SRCREV bump, which I was just about to send
out, but the code has been in tree for some time yet, and all the qemu*
BSPs are already running at that revision.

Bruce

>
> Regards,
>
>
> --
> Otavio Salvador                             O.S. Systems
> http://www.ossystems.com.br        http://code.ossystems.com.br
> Mobile: +55 (53) 9981-7854            Mobile: +1 (347) 903-9750
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