From 620b23ece54a0bb43189bb9c0f14adf447cbafe6 Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Thu, 24 Nov 2016 06:13:11 +0100 Subject: score: Optimize _Thread_queue_Enqueue() Move thread state for _Thread_queue_Enqueue() to the thread queue context. This reduces the parameter count of _Thread_queue_Enqueue() from five to four (ARM for example has only four function parameter registers). Since the thread state is used after several function calls inside _Thread_queue_Enqueue() this parameter was saved on the stack previously. --- cpukit/score/src/futex.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'cpukit/score/src/futex.c') diff --git a/cpukit/score/src/futex.c b/cpukit/score/src/futex.c index efac831df5..f200895562 100644 --- a/cpukit/score/src/futex.c +++ b/cpukit/score/src/futex.c @@ -92,6 +92,10 @@ int _Futex_Wait( struct _Futex_Control *_futex, int *uaddr, int val ) executing = _Futex_Queue_acquire_critical( futex, &queue_context ); if ( *uaddr == val ) { + _Thread_queue_Context_set_thread_state( + &queue_context, + STATES_WAITING_FOR_SYS_LOCK_FUTEX + ); _Thread_queue_Context_set_do_nothing_enqueue_callout( &queue_context ); _Thread_queue_Context_set_no_timeout( &queue_context ); _Thread_queue_Context_set_ISR_level( &queue_context, level ); @@ -99,7 +103,6 @@ int _Futex_Wait( struct _Futex_Control *_futex, int *uaddr, int val ) &futex->Queue.Queue, FUTEX_TQ_OPERATIONS, executing, - STATES_WAITING_FOR_SYS_LOCK_FUTEX, &queue_context ); eno = 0; -- cgit v1.2.3