[lttng-dev] sched_process_exec

[Mathieu Desnoyers]

* Woegerer, Paul (Paul_Woegerer at mentor.com) wrote:
> On 10/11/2012 06:07 PM, Mathieu Desnoyers wrote:
> > * Woegerer, Paul (Paul_Woegerer at mentor.com) wrote:
> >> On 10/11/2012 04:58 PM, Mathieu Desnoyers wrote:
> >>> A couple a details to fix before I can merge this patch though:
> >>>
> >>> Please also update instrumentation/events/mainline/sched.h to add the
> >>> original mainline TRACE_EVENT, so we can keep the files in sync.
> >>
> >> Ok, reconfigured Thunderbird, removed semicolon, updated mainline:
> > 
> > Still an issue:
> > 
> > compudj at thinkos:~/work/lttng-modules$ patch -p1 < ~/.swp
> > patching file instrumentation/events/lttng-module/sched.h
> > patch: **** malformed patch at line 45: SCHED_OTHER/BATCH/IDLE
> 
> Now it should (hopefully) work:
> 
> From b792323bca694f1e88144319befcdbfb30efa878 Mon Sep 17 00:00:00 2001
> From: Paul Woegerer <paul_woegerer at mentor.com>
> Date: Fri, 12 Oct 2012 12:52:19 +0200
> Subject: [PATCH] Add TRACE_EVENT(sched_process_exec) to sched.h.

merged, thanks !

Mathieu

> 
> ---
>  instrumentation/events/lttng-module/sched.h |   26 ++++++++++++++++++++++++++
>  instrumentation/events/mainline/sched.h     |   26 ++++++++++++++++++++++++++
>  2 files changed, 52 insertions(+)
> 
> diff --git a/instrumentation/events/lttng-module/sched.h b/instrumentation/events/lttng-module/sched.h
> index b68616e..23e4955 100644
> --- a/instrumentation/events/lttng-module/sched.h
> +++ b/instrumentation/events/lttng-module/sched.h
> @@ -314,6 +314,32 @@ TRACE_EVENT(sched_process_fork,
>  )
>  
>  /*
> + * Tracepoint for exec:
> + */
> +TRACE_EVENT(sched_process_exec,
> +
> +	TP_PROTO(struct task_struct *p, pid_t old_pid,
> +		 struct linux_binprm *bprm),
> +
> +	TP_ARGS(p, old_pid, bprm),
> +
> +	TP_STRUCT__entry(
> +		__string(	filename,	bprm->filename	)
> +		__field(	pid_t,		pid		)
> +		__field(	pid_t,		old_pid		)
> +	),
> +
> +	TP_fast_assign(
> +		tp_strcpy(filename, bprm->filename)
> +		tp_assign(pid, p->pid)
> +		tp_assign(old_pid, old_pid)
> +	),
> +
> +	TP_printk("filename=%s pid=%d old_pid=%d", __get_str(filename),
> +		  __entry->pid, __entry->old_pid)
> +)
> +
> +/*
>   * XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE
>   *     adding sched_stat support to SCHED_FIFO/RR would be welcome.
>   */
> diff --git a/instrumentation/events/mainline/sched.h b/instrumentation/events/mainline/sched.h
> index f633478..6700ecc 100644
> --- a/instrumentation/events/mainline/sched.h
> +++ b/instrumentation/events/mainline/sched.h
> @@ -275,6 +275,32 @@ TRACE_EVENT(sched_process_fork,
>  );
>  
>  /*
> + * Tracepoint for exec:
> + */
> +TRACE_EVENT(sched_process_exec,
> +
> +	TP_PROTO(struct task_struct *p, pid_t old_pid,
> +		 struct linux_binprm *bprm),
> +
> +	TP_ARGS(p, old_pid, bprm),
> +
> +	TP_STRUCT__entry(
> +		__string(	filename,	bprm->filename	)
> +		__field(	pid_t,		pid		)
> +		__field(	pid_t,		old_pid		)
> +	),
> +
> +	TP_fast_assign(
> +		__assign_str(filename, bprm->filename);
> +		__entry->pid		= p->pid;
> +		__entry->old_pid	= old_pid;
> +	),
> +
> +	TP_printk("filename=%s pid=%d old_pid=%d", __get_str(filename),
> +		  __entry->pid, __entry->old_pid)
> +);
> +
> +/*
>   * XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE
>   *     adding sched_stat support to SCHED_FIFO/RR would be welcome.
>   */
> -- 
> 1.7.10.4
> 

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