perf thread: Add accessor functions for thread

Using accessors will make it easier to add reference count checking in
later patches.

Committer notes:

thread->nsinfo wasn't wrapped as it is used together with
nsinfo__zput(), where does a trick to set the field with a refcount
being dropped to NULL, and that doesn't work well with using
thread__nsinfo(thread), that loses the &thread->nsinfo pointer.

When refcount checking is added to 'struct thread', later in this
series, nsinfo__zput(RC_CHK_ACCESS(thread)->nsinfo) will be used to
check the thread pointer.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ali Saidi <alisaidi@amazon.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Brian Robbins <brianrob@linux.microsoft.com>
Cc: Changbin Du <changbin.du@huawei.com>
Cc: Dmitrii Dolgov <9erthalion6@gmail.com>
Cc: Fangrui Song <maskray@google.com>
Cc: German Gomez <german.gomez@arm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Ivan Babrou <ivan@cloudflare.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jing Zhang <renyu.zj@linux.alibaba.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: K Prateek Nayak <kprateek.nayak@amd.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Steinar H. Gunderson <sesse@google.com>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Wenyu Liu <liuwenyu7@huawei.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yang Jihong <yangjihong1@huawei.com>
Cc: Ye Xingchen <ye.xingchen@zte.com.cn>
Cc: Yuan Can <yuancan@huawei.com>
Cc: coresight@lists.linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20230608232823.4027869-4-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 6 insertions, 6 deletions

diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c
index dde2ca77a005..45c7e7722916 100644
--- a/tools/perf/util/intel-pt.c
+++ b/tools/perf/util/intel-pt.c
@@ -1428,13 +1428,13 @@ static int intel_pt_get_guest_from_sideband(struct intel_pt_queue *ptq)
 		ptq->guest_machine = machine;
 	}
 
-	vcpu = ptq->thread ? ptq->thread->guest_cpu : -1;
+	vcpu = ptq->thread ? thread__guest_cpu(ptq->thread) : -1;
 	if (vcpu < 0)
 		return -1;
 
 	tid = machine__get_current_tid(machine, vcpu);
 
-	if (ptq->guest_thread && ptq->guest_thread->tid != tid)
+	if (ptq->guest_thread && thread__tid(ptq->guest_thread) != tid)
 		thread__zput(ptq->guest_thread);
 
 	if (!ptq->guest_thread) {
@@ -1444,7 +1444,7 @@ static int intel_pt_get_guest_from_sideband(struct intel_pt_queue *ptq)
 	}
 
 	ptq->guest_machine_pid = machine_pid;
-	ptq->guest_pid = ptq->guest_thread->pid_;
+	ptq->guest_pid = thread__pid(ptq->guest_thread);
 	ptq->guest_tid = tid;
 	ptq->vcpu = vcpu;
 
@@ -1467,9 +1467,9 @@ static void intel_pt_set_pid_tid_cpu(struct intel_pt *pt,
 		ptq->thread = machine__find_thread(pt->machine, -1, ptq->tid);
 
 	if (ptq->thread) {
-		ptq->pid = ptq->thread->pid_;
+		ptq->pid = thread__pid(ptq->thread);
 		if (queue->cpu == -1)
-			ptq->cpu = ptq->thread->cpu;
+			ptq->cpu = thread__cpu(ptq->thread);
 	}
 
 	if (pt->have_guest_sideband && intel_pt_get_guest_from_sideband(ptq)) {
@@ -3074,7 +3074,7 @@ static void intel_pt_sample_set_pid_tid_cpu(struct intel_pt_queue *ptq,
 	if (ptq->pid == -1) {
 		ptq->thread = machine__find_thread(m, -1, ptq->tid);
 		if (ptq->thread)
-			ptq->pid = ptq->thread->pid_;
+			ptq->pid = thread__pid(ptq->thread);
 		return;
 	}