linux-kernel - Re: [PATCH 4/5] perf tools: Add machine pointer into thread struct

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Message-ID: <20140314141612.GE2396@ghostprotocols.net>
Date:	Fri, 14 Mar 2014 11:16:12 -0300
From:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	linux-kernel@...r.kernel.org, Don Zickus <dzickus@...hat.com>,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [PATCH 4/5] perf tools: Add machine pointer into thread struct

Em Fri, Mar 14, 2014 at 03:00:05PM +0100, Jiri Olsa escreveu:
> Need machine pointer in thread object, so we could
> lookup the process thread in following patch.

Can't we use the already existing thread->mg.machine for that?

- Arnaldo
 
> Signed-off-by: Jiri Olsa <jolsa@...hat.com>
> Cc: Don Zickus <dzickus@...hat.com>
> Cc: Corey Ashford <cjashfor@...ux.vnet.ibm.com>
> Cc: David Ahern <dsahern@...il.com>
> Cc: Frederic Weisbecker <fweisbec@...il.com>
> Cc: Ingo Molnar <mingo@...nel.org>
> Cc: Namhyung Kim <namhyung@...nel.org>
> Cc: Paul Mackerras <paulus@...ba.org>
> Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> Cc: Arnaldo Carvalho de Melo <acme@...stprotocols.net>
> ---
>  tools/perf/util/machine.c | 2 +-
>  tools/perf/util/thread.c  | 4 +++-
>  tools/perf/util/thread.h  | 5 ++++-
>  3 files changed, 8 insertions(+), 3 deletions(-)
> 
> diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
> index 009dfb4..6196bb9 100644
> --- a/tools/perf/util/machine.c
> +++ b/tools/perf/util/machine.c
> @@ -311,7 +311,7 @@ static struct thread *__machine__findnew_thread(struct machine *machine,
>  	if (!create)
>  		return NULL;
>  
> -	th = thread__new(pid, tid);
> +	th = thread__new(pid, tid, machine);
>  	if (th != NULL) {
>  		rb_link_node(&th->rb_node, parent, p);
>  		rb_insert_color(&th->rb_node, &machine->threads);
> diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
> index ac77b6c..7c1aad0 100644
> --- a/tools/perf/util/thread.c
> +++ b/tools/perf/util/thread.c
> @@ -8,13 +8,15 @@
>  #include "debug.h"
>  #include "comm.h"
>  
> -struct thread *thread__new(pid_t pid, pid_t tid)
> +struct thread *thread__new(pid_t pid, pid_t tid,
> +			   struct machine *machine)
>  {
>  	char *comm_str;
>  	struct comm *comm;
>  	struct thread *thread = zalloc(sizeof(*thread));
>  
>  	if (thread != NULL) {
> +		thread->machine = machine;
>  		thread->pid_ = pid;
>  		thread->tid = tid;
>  		thread->ppid = -1;
> diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h
> index 77d0be2..2200557 100644
> --- a/tools/perf/util/thread.h
> +++ b/tools/perf/util/thread.h
> @@ -7,12 +7,14 @@
>  #include <sys/types.h>
>  #include "symbol.h"
>  #include <strlist.h>
> +#include "machine.h"
>  
>  struct thread {
>  	union {
>  		struct rb_node	 rb_node;
>  		struct list_head node;
>  	};
> +	struct machine		*machine;
>  	struct map_groups	*mg;
>  	pid_t			pid_; /* Not all tools update this */
>  	pid_t			tid;
> @@ -29,7 +31,8 @@ struct thread {
>  struct machine;
>  struct comm;
>  
> -struct thread *thread__new(pid_t pid, pid_t tid);
> +struct thread *thread__new(pid_t pid, pid_t tid,
> +			   struct machine *machine);
>  void thread__delete(struct thread *thread);
>  static inline void thread__exited(struct thread *thread)
>  {
> -- 
> 1.8.3.1
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