linux/arch/blackfin
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
..
boot Blackfin arch: add a cheesy install target 2007-10-22 00:45:55 +08:00
configs [Blackfin] arch: update defconfig of boards 2008-01-24 16:14:35 +08:00
kernel Introduce flags for reserve_bootmem() 2008-02-07 08:42:25 -08:00
lib [Blackfin] arch: fix bug - make memcpy return the dest addr. 2007-12-21 21:12:21 +08:00
mach-bf527 Rename: linux/pata_platform.h to linux/ata_platform.h 2008-02-06 06:54:17 -05:00
mach-bf533 Rename: linux/pata_platform.h to linux/ata_platform.h 2008-02-06 06:54:17 -05:00
mach-bf537 Rename: linux/pata_platform.h to linux/ata_platform.h 2008-02-06 06:54:17 -05:00
mach-bf548 [Blackfin] arch: use common flash driver to setup partitions rather than the bf5xx-flash driver 2008-01-24 17:14:04 +08:00
mach-bf561 Rename: linux/pata_platform.h to linux/ata_platform.h 2008-02-06 06:54:17 -05:00
mach-common timerfd: new timerfd API 2008-02-05 09:44:07 -08:00
mm [Blackfin] arch: fix bug kernel boot message: memory information is not reasonable 2008-01-27 19:56:17 +08:00
oprofile Combine instrumentation menus in kernel/Kconfig.instrumentation 2007-10-19 11:53:54 -07:00
Kconfig Move Kconfig.instrumentation to arch/Kconfig and init/Kconfig 2008-02-03 08:58:08 +01:00
Kconfig.debug Blackfin arch: split debug stuff off into Kconfig.debug like everyone else 2007-11-21 23:50:49 +08:00
Makefile [Blackfin] arch: Initial checkin of the memory protection support. 2008-01-27 18:39:16 +08:00