[lttng-dev] [PATCH lttng-modules 1/3] Add btrfs tracepoint for em's EEXIST case

[Mathieu Desnoyers]

All 3 merged into master, thanks!

Mathieu

----- On Jun 7, 2018, at 3:48 PM, Michael Jeanson mjeanson at efficios.com wrote:

> See upstream commits:
> 
>  commit 393da91819e35af538ef97c7c6a04899e2fbfe0e
>  Author: Liu Bo <bo.li.liu at oracle.com>
>  Date:   Fri Jan 5 12:51:16 2018 -0700
> 
>    Btrfs: add tracepoint for em's EEXIST case
> 
>    This is adding a tracepoint 'btrfs_handle_em_exist' to help debug the
>    subtle bugs around merge_extent_mapping.
> 
> Signed-off-by: Michael Jeanson <mjeanson at efficios.com>
> ---
> instrumentation/events/lttng-module/btrfs.h | 18 ++++++++++++++++++
> 1 file changed, 18 insertions(+)
> 
> diff --git a/instrumentation/events/lttng-module/btrfs.h
> b/instrumentation/events/lttng-module/btrfs.h
> index 4eb0db2..c413e92 100644
> --- a/instrumentation/events/lttng-module/btrfs.h
> +++ b/instrumentation/events/lttng-module/btrfs.h
> @@ -273,6 +273,24 @@ LTTNG_TRACEPOINT_EVENT(btrfs_get_extent,
> 
> #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
> 
> +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,17,0))
> +LTTNG_TRACEPOINT_EVENT(btrfs_handle_em_exist,
> +
> +	TP_PROTO(const struct extent_map *existing, const struct extent_map *map, u64
> start, u64 len),
> +
> +	TP_ARGS(existing, map, start, len),
> +
> +	TP_FIELDS(
> +		ctf_integer(u64, e_start, existing->start)
> +		ctf_integer(u64, e_len, existing->len)
> +		ctf_integer(u64, map_start, map->start)
> +		ctf_integer(u64, map_len, map->len)
> +		ctf_integer(u64, start, start)
> +		ctf_integer(u64, len, len)
> +	)
> +)
> +#endif
> +
> #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0))
> LTTNG_TRACEPOINT_EVENT_CLASS(btrfs__ordered_extent,
> 
> --
> 2.17.1

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