From d50acdbb6c8213114ce887a56daea02697c9e1a1 Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Mon, 10 Mar 2014 08:25:32 +0100 Subject: score: Add local context to SMP lock API Add a local context structure to the SMP lock API for acquire and release pairs. This context can be used to store the ISR level and profiling information. It may be later used to enable more sophisticated lock algorithms, e.g. MCS locks. There is only one lock that cannot be used with a local context. This is the per-CPU lock since here we would have to transfer the local context through a context switch which is very complicated. --- cpukit/libcsupport/include/ringbuf.h | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'cpukit/libcsupport/include/ringbuf.h') diff --git a/cpukit/libcsupport/include/ringbuf.h b/cpukit/libcsupport/include/ringbuf.h index 13821a545d..05bcceb6c1 100644 --- a/cpukit/libcsupport/include/ringbuf.h +++ b/cpukit/libcsupport/include/ringbuf.h @@ -36,22 +36,22 @@ typedef struct { #define Ring_buffer_Add_character( _buffer, _ch ) \ do { \ - rtems_interrupt_level isrlevel; \ + rtems_interrupt_lock_context lock_context; \ \ - rtems_interrupt_lock_acquire( &(_buffer)->lock, isrlevel ); \ + rtems_interrupt_lock_acquire( &(_buffer)->lock, &lock_context ); \ (_buffer)->tail = ((_buffer)->tail+1) % RINGBUF_QUEUE_LENGTH; \ (_buffer)->buffer[ (_buffer)->tail ] = (_ch); \ - rtems_interrupt_lock_release( &(_buffer)->lock, isrlevel ); \ + rtems_interrupt_lock_release( &(_buffer)->lock, &lock_context ); \ } while ( 0 ) #define Ring_buffer_Remove_character( _buffer, _ch ) \ do { \ - rtems_interrupt_level isrlevel; \ + rtems_interrupt_lock_context lock_context; \ \ - rtems_interrupt_lock_acquire( &(_buffer)->lock, isrlevel ); \ + rtems_interrupt_lock_acquire( &(_buffer)->lock, &lock_context ); \ (_buffer)->head = ((_buffer)->head+1) % RINGBUF_QUEUE_LENGTH; \ (_ch) = (_buffer)->buffer[ (_buffer)->head ]; \ - rtems_interrupt_lock_release( &(_buffer)->lock, isrlevel ); \ + rtems_interrupt_lock_release( &(_buffer)->lock, &lock_context ); \ } while ( 0 ) #endif -- cgit v1.2.3