[lttng-dev] [PATCH lttng-modules] Fix: mm_page_alloc_extfrag instrumentation for kernel 3.18.10

[Mathieu Desnoyers]

merged into master, stable-2.7, stable-2.6, thanks!

Mathieu

----- On Aug 14, 2015, at 11:37 AM, Michael Jeanson mjeanson at efficios.com wrote:

> The following commit has been backported from kernel 3.19.2 into
> 3.18.10, introducing a change to mm_page_alloc_extfrag and therefore
> provoking a build failure on a 3.18.10 kernel:
> 
> commit a4f3f96f850db69890f47984c60606a2362bee89
> Author: Vlastimil Babka <vbabka at suse.cz>
> Date:   Wed Feb 11 15:28:15 2015 -0800
> 
>    mm: when stealing freepages, also take pages created by splitting buddy page
> 
>    commit 99592d598eca62bdbbf62b59941c189176dfc614 upstream.
> 
> This patch adds the proper version check to allow building on 3.18.y.
> 
> Signed-off-by: Michael Jeanson <mjeanson at efficios.com>
> ---
> instrumentation/events/lttng-module/kmem.h | 1 +
> 1 file changed, 1 insertion(+)
> 
> diff --git a/instrumentation/events/lttng-module/kmem.h
> b/instrumentation/events/lttng-module/kmem.h
> index 85c116b..85d13b9 100644
> --- a/instrumentation/events/lttng-module/kmem.h
> +++ b/instrumentation/events/lttng-module/kmem.h
> @@ -202,6 +202,7 @@ LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(kmem_mm_page,
> mm_page_pcpu_drain,
> 
> #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,2)	\
> 	|| LTTNG_KERNEL_RANGE(3,14,36, 3,15,0)		\
> +	|| LTTNG_KERNEL_RANGE(3,18,10, 3,19,0)		\
> 	|| LTTNG_DEBIAN_KERNEL_RANGE(3,16,7,9,0,0, 3,17,0,0,0,0)	\
> 	|| LTTNG_UBUNTU_KERNEL_RANGE(3,13,11,50, 3,14,0,0)	\
> 	|| LTTNG_UBUNTU_KERNEL_RANGE(3,16,7,38, 3,17,0,0))
> --
> 1.9.1

-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com