linux/arch/sparc64
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 [SPARC64]: Add .gitignore file for sparc64 boot images. 2006-02-05 00:15:11 -08:00
kernel Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6 2008-02-06 10:46:58 -08:00
lib [SPARC64]: Fix inconsistent .section usage in lib/ 2008-01-31 19:32:44 -08:00
math-emu [SPARC64]: small Makefile cleanups 2007-10-22 02:32:10 -07:00
mm Introduce flags for reserve_bootmem() 2008-02-07 08:42:25 -08:00
oprofile Combine instrumentation menus in kernel/Kconfig.instrumentation 2007-10-19 11:53:54 -07:00
prom [SPARC64]: __inline__ --> inline 2007-10-27 00:13:04 -07:00
solaris get rid of NR_OPEN and introduce a sysctl_nr_open 2008-02-06 10:41:06 -08:00
defconfig [SPARC64]: Update defconfig. 2008-02-06 04:12:24 -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 Replace CONFIG_SOFTWARE_SUSPEND with CONFIG_HIBERNATION 2007-07-29 16:45:38 -07:00
Makefile [SPARC64]: small Makefile cleanups 2007-10-22 02:32:10 -07:00