Skip to main content

Browse the archive

Staging
v0.8.1
https://github.com/torvalds/linux
02 December 2023, 22:23:51 UTC
Revision 36be57ffe39e03aab9fbe857f70c7a6a15bd9e08 authored by Paul Jackson on 20 May 2006, 22:00:10 UTC, committed by Linus Torvalds on 21 May 2006, 19:59:18 UTC 
[PATCH] cpuset: update cpuset_zones_allowed comment
 
Update the kernel/cpuset.c:cpuset_zone_allowed() comment.

The rule for when mm/page_alloc.c should call cpuset_zone_allowed()
was intended to be:

  Don't call cpuset_zone_allowed() if you can't sleep, unless you
  pass in the __GFP_HARDWALL flag set in gfp_flag, which disables
  the code that might scan up ancestor cpusets and sleep.

The explanation of this rule in the comment above cpuset_zone_allowed() was
stale, as a result of a restructuring of some __alloc_pages() code in
November 2005.

Rewrite that comment ...

Signed-off-by: Paul Jackson <pj@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
1 parent bdd804f
Raw File
Tip revision: 36be57ffe39e03aab9fbe857f70c7a6a15bd9e08 authored by Paul Jackson on 20 May 2006, 22:00:10 UTC
[PATCH] cpuset: update cpuset_zones_allowed comment
Tip revision: 36be57f
mutex.h 
/*
 * Mutexes: blocking mutual exclusion locks
 *
 * started by Ingo Molnar:
 *
 *  Copyright (C) 2004, 2005, 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
 *
 * This file contains mutex debugging related internal prototypes, for the
 * !CONFIG_DEBUG_MUTEXES case. Most of them are NOPs:
 */

#define spin_lock_mutex(lock)			spin_lock(lock)
#define spin_unlock_mutex(lock)			spin_unlock(lock)
#define mutex_remove_waiter(lock, waiter, ti) \
		__list_del((waiter)->list.prev, (waiter)->list.next)

#define DEBUG_WARN_ON(c)				do { } while (0)
#define debug_mutex_set_owner(lock, new_owner)		do { } while (0)
#define debug_mutex_clear_owner(lock)			do { } while (0)
#define debug_mutex_init_waiter(waiter)			do { } while (0)
#define debug_mutex_wake_waiter(lock, waiter)		do { } while (0)
#define debug_mutex_free_waiter(waiter)			do { } while (0)
#define debug_mutex_add_waiter(lock, waiter, ti, ip)	do { } while (0)
#define debug_mutex_unlock(lock)			do { } while (0)
#define debug_mutex_init(lock, name)			do { } while (0)

/*
 * Return-address parameters/declarations. They are very useful for
 * debugging, but add overhead in the !DEBUG case - so we go the
 * trouble of using this not too elegant but zero-cost solution:
 */
#define __IP_DECL__
#define __IP__
#define __RET_IP__
back to top