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ANDROID: binder: Add tracing for binder priority inheritance.

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Bug: 34461621
Change-Id: I5ebb1c0c49fd42a89ee250a1d70221f767c82c7c
Signed-off-by: Martijn Coenen <maco@google.com>
This commit is contained in:
Martijn Coenen 2017-05-08 09:33:22 -07:00 committed by Amit Pundir
parent 3c4bf6860e
commit e3b79068a9
2 changed files with 28 additions and 0 deletions
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4
drivers/android/binder.c
View file

@ -1209,6 +1209,10 @@ static void binder_do_set_priority(struct task_struct *task,
task->pid, desired.prio,
to_kernel_prio(policy, priority));
trace_binder_set_priority(task->tgid, task->pid, task->normal_prio,
to_kernel_prio(policy, priority),
desired.prio);
/* Set the actual priority */
if (task->policy != policy || is_rt_policy(policy)) {
struct sched_param params;

24
drivers/android/binder_trace.h
View file

@ -85,6 +85,30 @@ DEFINE_BINDER_FUNCTION_RETURN_EVENT(binder_ioctl_done);
DEFINE_BINDER_FUNCTION_RETURN_EVENT(binder_write_done);
DEFINE_BINDER_FUNCTION_RETURN_EVENT(binder_read_done);
TRACE_EVENT(binder_set_priority,
TP_PROTO(int proc, int thread, unsigned int old_prio,
unsigned int desired_prio, unsigned int new_prio),
TP_ARGS(proc, thread, old_prio, new_prio, desired_prio),
TP_STRUCT__entry(
__field(int, proc)
__field(int, thread)
__field(unsigned int, old_prio)
__field(unsigned int, new_prio)
__field(unsigned int, desired_prio)
),
TP_fast_assign(
__entry->proc = proc;
__entry->thread = thread;
__entry->old_prio = old_prio;
__entry->new_prio = new_prio;
__entry->desired_prio = desired_prio;
),
TP_printk("proc=%d thread=%d old=%d => new=%d desired=%d",
__entry->proc, __entry->thread, __entry->old_prio,
__entry->new_prio, __entry->desired_prio)
);
TRACE_EVENT(binder_wait_for_work,
TP_PROTO(bool proc_work, bool transaction_stack, bool thread_todo),
TP_ARGS(proc_work, transaction_stack, thread_todo),