diff options
Diffstat (limited to 'nuttx/arch/arm/src/armv7-m/up_reprioritizertr.c')
| -rwxr-xr-x | nuttx/arch/arm/src/armv7-m/up_reprioritizertr.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/nuttx/arch/arm/src/armv7-m/up_reprioritizertr.c b/nuttx/arch/arm/src/armv7-m/up_reprioritizertr.c index 9ac2d1145..f1c961b15 100755 --- a/nuttx/arch/arm/src/armv7-m/up_reprioritizertr.c +++ b/nuttx/arch/arm/src/armv7-m/up_reprioritizertr.c @@ -1,8 +1,8 @@ /**************************************************************************** * arch/arm/src/armv7-m/up_reprioritizertr.c * - * Copyright (C) 2007-2009 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * Copyright (C) 2007-2009, 2012 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions @@ -103,8 +103,8 @@ void up_reprioritize_rtr(_TCB *tcb, uint8_t priority) slldbg("TCB=%p PRI=%d\n", tcb, priority); /* Remove the tcb task from the ready-to-run list. - * sched_removereadytorun will return true if we just - * remove the head of the ready to run list. + * sched_removereadytorun will return true if we just removed the head + * of the ready to run list. */ switch_needed = sched_removereadytorun(tcb); @@ -113,17 +113,18 @@ void up_reprioritize_rtr(_TCB *tcb, uint8_t priority) tcb->sched_priority = (uint8_t)priority; - /* Return the task to the specified blocked task list. - * sched_addreadytorun will return true if the task was - * added to the new list. We will need to perform a context - * switch only if the EXCLUSIVE or of the two calls is non-zero - * (i.e., one and only one the calls changes the head of the - * ready-to-run list). + /* Return the task to the ready-to-run task list. sched_addreadytorun + * will return true if the task was added to the head of ready-to-run + * list. We will need to perform a context switch only if the + * EXCLUSIVE or of the two calls is non-zero (i.e., one and only one + * the calls changes the head of the ready-to-run list). */ switch_needed ^= sched_addreadytorun(tcb); - /* Now, perform the context switch if one is needed */ + /* Now, perform the context switch if one is needed (i.e. if the head + * of the ready-to-run list is no longer the same). + */ if (switch_needed) { |