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Commit 81402ead authored by Martijn Coenen's avatar Martijn Coenen Committed by Martijn Coenen
Browse files

ANDROID: binder: Add tracing for binder priority inheritance. 



Bug: 34461621
Change-Id: I5ebb1c0c49fd42a89ee250a1d70221f767c82c7c
Signed-off-by: default avatarMartijn Coenen <maco@google.com>
parent 96a28fcc

drivers/android/binder.c

+4 −0
Original line number Diff line number Diff line
@@ -1153,6 +1153,10 @@ 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;

drivers/android/binder_trace.h

+24 −0
Original line number Diff line number Diff line
@@ -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),