[lttng-dev] [PATCH lttng-modules] Fix: missing event's prefix in btrfs probe

[Mathieu Desnoyers]

* David Goulet (dgoulet at ev0ke.net) wrote:
> From: David Goulet <dgoulet at efficios.com>

Nope, those prefix are missing upstream. I cannot take them until Linux
upstream is fixed. You might want to submit a patch on LKML, ccing those
responsible for:

commit 3f7de037fb3727b20bc27332cdcf2488b702394c
Author: Josef Bacik <josef at redhat.com>
Date:   Thu Nov 10 08:29:20 2011 -0500

    Btrfs: add allocator tracepoints
    
    I used these tracepoints when figuring out what the cluster stuff was doing, so
    add them to mainline in case we need to profile this stuff again.  Thanks,
    
    Signed-off-by: Josef Bacik <josef at redhat.com>

And the btrfs maintainer (found in MAINTAINERS).

Thanks,

Mathieu

> 
> Signed-off-by: David Goulet <dgoulet at efficios.com>
> ---
>  instrumentation/events/lttng-module/btrfs.h |    8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/instrumentation/events/lttng-module/btrfs.h b/instrumentation/events/lttng-module/btrfs.h
> index c01a6e0..34ae480 100644
> --- a/instrumentation/events/lttng-module/btrfs.h
> +++ b/instrumentation/events/lttng-module/btrfs.h
> @@ -390,7 +390,7 @@ DECLARE_EVENT_CLASS(btrfs__writepage,
>  #endif
>  )
>  
> -DEFINE_EVENT(btrfs__writepage, __extent_writepage,
> +DEFINE_EVENT(btrfs__writepage, btrfs_extent_writepage,
>  
>  	TP_PROTO(struct page *page, struct inode *inode,
>  		 struct writeback_control *wbc),
> @@ -792,7 +792,7 @@ DEFINE_EVENT(btrfs__reserved_extent,  btrfs_reserved_extent_free,
>  )
>  
>  #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
> -TRACE_EVENT(find_free_extent,
> +TRACE_EVENT(btrfs_find_free_extent,
>  
>  	TP_PROTO(struct btrfs_root *root, u64 num_bytes, u64 empty_size,
>  		 u64 data),
> @@ -956,7 +956,7 @@ TRACE_EVENT(btrfs_setup_cluster,
>  #endif
>  
>  #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
> -TRACE_EVENT(alloc_extent_state,
> +TRACE_EVENT(btrfs_alloc_extent_state,
>  
>  	TP_PROTO(struct extent_state *state, gfp_t mask, unsigned long IP),
>  
> @@ -978,7 +978,7 @@ TRACE_EVENT(alloc_extent_state,
>  		  show_gfp_flags(__entry->mask), (void *)__entry->ip)
>  )
>  
> -TRACE_EVENT(free_extent_state,
> +TRACE_EVENT(btrfs_free_extent_state,
>  
>  	TP_PROTO(struct extent_state *state, unsigned long IP),
>  
> -- 
> 1.7.10.4
> 
> 
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-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com