[ltt-dev] [PATCH] Add dup probe to lttng module

[Mathieu Desnoyers]

merged, thanks!

Mathieu

* Francis Giraldeau (francis.giraldeau at usherbrooke.ca) wrote:
> This patch provides instrumentation for dup system call. It records the oldfd
> and newfd if the operation succeed. This is required to recover in the trace
> tre fd that newfd reference to.
> 
> Signed-off-by: Francis Giraldeau <francis.giraldeau at usherbrooke.ca>
> ---
>  probes/fs-trace.c |    6 ++++++
>  1 files changed, 6 insertions(+), 0 deletions(-)
> 
> diff --git a/probes/fs-trace.c b/probes/fs-trace.c
> index ccfc282..4635c88 100644
> --- a/probes/fs-trace.c
> +++ b/probes/fs-trace.c
> @@ -153,6 +153,12 @@ void probe_fs_poll(void *_data, int fd)
>  		"fd %d", fd);
>  }
>  
> +void probe_fs_dup(void *_data, unsigned int oldfd, unsigned int newfd)
> +{
> +	trace_mark_tp(fs, dup, fs_dup, probe_fs_dup,
> +		"oldfd %d newfd %d", oldfd, newfd);
> +}
> +
>  MODULE_LICENSE("GPL and additional rights");
>  MODULE_AUTHOR("Mathieu Desnoyers");
>  MODULE_DESCRIPTION("FS Tracepoint Probes");
> -- 
> 1.7.1
> 
> 
> _______________________________________________
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> ltt-dev at lists.casi.polymtl.ca
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> 

-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com