Mirrors_Framework/nuttx
1
0
Fork 0
mirror of https://github.com/apache/nuttx.git synced 2026-06-06 16:50:55 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

Add a CPU affinity set to the TCB if SMP is enable and use this CPU set as a mask for determining which CPUs the thread may run on. Add an affinity field to the attrributes to permit controlling which CPUs a pthread may run on. Implements pthread_att_setaffinity_np() and pthread_attr_getaffinity_np().

Browse Source
This commit is contained in:
Gregory Nutt
2016-02-19 17:33:35 -06:00
parent 2075eb7932
commit a633353ec3
28 changed files with 174 additions and 355 deletions
Download Patch File Download Diff File Expand all files Collapse all files
sched/task/task_setup.c
+47 -4
View File
@@ -1,7 +1,7 @@
/****************************************************************************
* sched/task/task_setup.c
*
* Copyright (C) 2007-2014 Gregory Nutt. All rights reserved.
* Copyright (C) 2007-2014, 2016 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
@@ -146,6 +146,38 @@ static int task_assignpid(FAR struct tcb_s *tcb)
return ERROR;
}
/****************************************************************************
* Name: task_inherit_affinity
*
* Description:
* exec(), task_create(), and vfork() all inherit the affinity mask from
* the parent thread. This is the default for pthread_create() as well
* but the affinity mask can be specified in the pthread attributes as
* well. pthread_setup() will have to fix up the affinity mask in this
* case.
*
* Parameters:
* tcb - The TCB of the new task.
*
* Returned Value:
* None
*
* Assumptions:
* The parent of the new task is the task at the head of the ready-to-run
* list.
*
****************************************************************************/
#ifdef CONFIG_SMP
static inline void task_inherit_affinity(FAR struct tcb_s *tcb)
{
FAR struct tcb_s *rtcb = this_task();
tcb->affinity = rtcb->affinity;
}
#else
# define task_inherit_affinity(tcb)
#endif
/****************************************************************************
* Name: task_saveparent
*
@@ -348,11 +380,22 @@ static int thread_schedsetup(FAR struct tcb_s *tcb, int priority,
task_saveparent(tcb, ttype);
#ifdef CONFIG_SMP
/* exec(), task_create(), and vfork() all inherit the affinity mask
* from the parent thread. This is the default for pthread_create()
* as well but the affinity mask can be specified in the pthread
* attributes as well. pthread_create() will have to fix up the
* affinity mask in this case.
*/
task_inherit_affinity(tcb);
#endif
#ifndef CONFIG_DISABLE_SIGNALS
/* exec(), pthread_create(), task_create(), and vfork() all
* inherit the signal mask of the parent thread.
*/
#ifndef CONFIG_DISABLE_SIGNALS
(void)sigprocmask(SIG_SETMASK, NULL, &tcb->sigprocmask);
#endif
@@ -628,8 +671,8 @@ int task_schedsetup(FAR struct task_tcb_s *tcb, int priority, start_t start,
****************************************************************************/
#ifndef CONFIG_DISABLE_PTHREAD
int pthread_schedsetup(FAR struct pthread_tcb_s *tcb, int priority, start_t start,
pthread_startroutine_t entry)
int pthread_schedsetup(FAR struct pthread_tcb_s *tcb, int priority,
start_t start, pthread_startroutine_t entry)
{
/* Perform common thread setup */