linux/arch/s390
Bernhard Walle 72a7fe3967 Introduce flags for reserve_bootmem()
This patchset adds a flags variable to reserve_bootmem() and uses the
BOOTMEM_EXCLUSIVE flag in crashkernel reservation code to detect collisions
between crashkernel area and already used memory.

This patch:

Change the reserve_bootmem() function to accept a new flag BOOTMEM_EXCLUSIVE.
If that flag is set, the function returns with -EBUSY if the memory already
has been reserved in the past.  This is to avoid conflicts.

Because that code runs before SMP initialisation, there's no race condition
inside reserve_bootmem_core().

[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: fix powerpc build]
Signed-off-by: Bernhard Walle <bwalle@suse.de>
Cc: <linux-arch@vger.kernel.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-07 08:42:25 -08:00
..
appldata [S390] appldata: remove unused binary sysctls. 2007-11-20 11:13:45 +01:00
boot [PATCH] use ${CROSS_COMPILE}installkernel in arch/*/boot/install.sh 2005-06-23 09:45:07 -07:00
crypto [S390] constify function pointer tables. 2008-01-26 14:11:32 +01:00
hypfs Kobject: convert arch/* from kobject_unregister() to kobject_put() 2008-01-24 20:40:39 -08:00
kernel Introduce flags for reserve_bootmem() 2008-02-07 08:42:25 -08:00
lib [S390] do local_irq_restore while spinning in spin_lock_irqsave. 2008-01-26 14:11:31 +01:00
math-emu [S390] Calibrate delay and bogomips. 2007-02-05 21:18:31 +01:00
mm [S390] Remove BUILD_BUG_ON() in vmem code. 2008-02-05 16:51:01 +01:00
oprofile Combine instrumentation menus in kernel/Kconfig.instrumentation 2007-10-19 11:53:54 -07:00
defconfig [S390] Update default configuration. 2007-10-22 12:52:46 +02:00
Kconfig [S390] latencytop s390 support. 2008-02-05 16:50:59 +01:00
Kconfig.debug [S390] DEBUG_PAGEALLOC support for s390. 2008-02-05 16:50:54 +01:00
Makefile kbuild: enable 'make AFLAGS=...' to add additional options to AS 2007-10-15 21:59:31 +02:00