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Message-ID: <51F29DAC.7000803@gmail.com>
Date:	Fri, 26 Jul 2013 10:02:52 -0600
From:	David Ahern <dsahern@...il.com>
To:	Adrian Hunter <adrian.hunter@...el.com>
CC:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	linux-kernel@...r.kernel.org,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jiri Olsa <jolsa@...hat.com>, Mike Galbraith <efault@....de>,
	Namhyung Kim <namhyung@...il.com>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Stephane Eranian <eranian@...gle.com>,
	Ingo Molnar <mingo@...nel.org>
Subject: Re: [PATCH V8 04/15] perf tools: change machine__findnew_thread()
 to set thread pid

On 7/18/13 4:42 AM, Adrian Hunter wrote:
> Add a new parameter for 'pid' to machine__findnew_thread().
> Change callers to pass 'pid' when it is known.
>
> Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
> ---
>   tools/perf/builtin-inject.c   |  2 +-
>   tools/perf/builtin-kmem.c     |  3 ++-
>   tools/perf/builtin-kvm.c      |  3 ++-
>   tools/perf/builtin-lock.c     |  3 ++-
>   tools/perf/builtin-sched.c    | 17 +++++++++--------
>   tools/perf/builtin-script.c   |  3 ++-
>   tools/perf/builtin-trace.c    | 12 +++++++++---
>   tools/perf/tests/hists_link.c |  3 ++-
>   tools/perf/util/build-id.c    |  7 +++++--
>   tools/perf/util/event.c       |  3 ++-
>   tools/perf/util/machine.c     | 23 ++++++++++++++++-------
>   tools/perf/util/machine.h     |  3 ++-
>   tools/perf/util/session.c     |  2 +-
>   13 files changed, 55 insertions(+), 29 deletions(-)
>
> diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c
> index 1d8de2e..0d4ae1d 100644
> --- a/tools/perf/builtin-inject.c
> +++ b/tools/perf/builtin-inject.c
> @@ -198,7 +198,7 @@ static int perf_event__inject_buildid(struct perf_tool *tool,
>
>   	cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
>
> -	thread = machine__findnew_thread(machine, event->ip.pid);
> +	thread = machine__findnew_thread(machine, event->ip.pid, event->ip.pid);

event->ip.tid? at a minimum current functionality is retained with
machine__findnew_thread(machine, 0, event->ip.pid)


>   	if (thread == NULL) {
>   		pr_err("problem processing %d event, skipping it.\n",
>   		       event->header.type);
> diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
> index b49f5c5..c324778 100644
> --- a/tools/perf/builtin-kmem.c
> +++ b/tools/perf/builtin-kmem.c
> @@ -305,7 +305,8 @@ static int process_sample_event(struct perf_tool *tool __maybe_unused,
>   				struct perf_evsel *evsel,
>   				struct machine *machine)
>   {
> -	struct thread *thread = machine__findnew_thread(machine, event->ip.pid);
> +	struct thread *thread = machine__findnew_thread(machine, event->ip.pid,
> +							event->ip.pid);

ditto.


> diff --git a/tools/perf/tests/hists_link.c b/tools/perf/tests/hists_link.c
> index 89085a9..5a178d5 100644
> --- a/tools/perf/tests/hists_link.c
> +++ b/tools/perf/tests/hists_link.c
> @@ -88,7 +88,8 @@ static struct machine *setup_fake_machine(struct machines *machines)
>   	for (i = 0; i < ARRAY_SIZE(fake_threads); i++) {
>   		struct thread *thread;
>
> -		thread = machine__findnew_thread(machine, fake_threads[i].pid);
> +		thread = machine__findnew_thread(machine, fake_threads[i].pid,
> +						 fake_threads[i].pid);

And here

>   		if (thread == NULL)
>   			goto out;
>
> diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c
> index 5295625..0f9d27a 100644
> --- a/tools/perf/util/build-id.c
> +++ b/tools/perf/util/build-id.c
> @@ -24,7 +24,8 @@ int build_id__mark_dso_hit(struct perf_tool *tool __maybe_unused,
>   {
>   	struct addr_location al;
>   	u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
> -	struct thread *thread = machine__findnew_thread(machine, event->ip.pid);
> +	struct thread *thread = machine__findnew_thread(machine, event->ip.pid,
> +							event->ip.pid);

and here.

> diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
> index 9541270..ec494a3 100644
> --- a/tools/perf/util/event.c
> +++ b/tools/perf/util/event.c
> @@ -677,7 +677,8 @@ int perf_event__preprocess_sample(const union perf_event *event,
>   				  symbol_filter_t filter)
>   {
>   	u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
> -	struct thread *thread = machine__findnew_thread(machine, event->ip.pid);
> +	struct thread *thread = machine__findnew_thread(machine, event->ip.pid,
> +							event->ip.pid);

and here

>
>   	if (thread == NULL)
>   		return -1;
> diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
> index 67ba572..16b84ac 100644
> --- a/tools/perf/util/machine.c
> +++ b/tools/perf/util/machine.c
> @@ -30,7 +30,8 @@ int machine__init(struct machine *machine, const char *root_dir, pid_t pid)
>   		return -ENOMEM;
>
>   	if (pid != HOST_KERNEL_ID) {
> -		struct thread *thread = machine__findnew_thread(machine, pid);
> +		struct thread *thread = machine__findnew_thread(machine, 0,
> +								pid);
>   		char comm[64];
>
>   		if (thread == NULL)
> @@ -282,9 +283,10 @@ static struct thread *__machine__findnew_thread(struct machine *machine,
>   	return th;
>   }
>
> -struct thread *machine__findnew_thread(struct machine *machine, pid_t tid)
> +struct thread *machine__findnew_thread(struct machine *machine, pid_t pid,
> +				       pid_t tid)
>   {
> -	return __machine__findnew_thread(machine, 0, tid, true);
> +	return __machine__findnew_thread(machine, pid, tid, true);
>   }
>
>   struct thread *machine__find_thread(struct machine *machine, pid_t tid)
> @@ -294,7 +296,9 @@ struct thread *machine__find_thread(struct machine *machine, pid_t tid)
>
>   int machine__process_comm_event(struct machine *machine, union perf_event *event)
>   {
> -	struct thread *thread = machine__findnew_thread(machine, event->comm.tid);
> +	struct thread *thread = machine__findnew_thread(machine,
> +							event->comm.pid,
> +							event->comm.tid);
>
>   	if (dump_trace)
>   		perf_event__fprintf_comm(event, stdout);
> @@ -975,7 +979,8 @@ int machine__process_mmap_event(struct machine *machine, union perf_event *event
>   		return 0;
>   	}
>
> -	thread = machine__findnew_thread(machine, event->mmap.pid);
> +	thread = machine__findnew_thread(machine, event->mmap.pid,
> +					 event->mmap.pid);

and here.

David
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