linux/arch/alpha
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 add a missing LIB_Y to arch/alpha/boot Makefile 2007-07-31 15:39:39 -07:00
kernel Introduce flags for reserve_bootmem() 2008-02-07 08:42:25 -08:00
lib remove __attribute_used__ 2008-01-28 23:21:18 +01:00
math-emu alpha: fix conversion from denormal float to double 2008-01-17 15:38:59 -08:00
mm Introduce flags for reserve_bootmem() 2008-02-07 08:42:25 -08:00
oprofile spelling fixes: arch/alpha/ 2007-10-20 01:04:37 +02:00
defconfig alpha/parisc: remove config variable DEBUG_RWLOCK 2008-02-06 10:41:03 -08:00
Kconfig Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial 2008-02-04 07:58:52 -08:00
Kconfig.debug alpha/parisc: remove config variable DEBUG_RWLOCK 2008-02-06 10:41:03 -08:00
Makefile alpha: build fixes 2007-12-17 19:28:16 -08:00