linux/arch/sparc64/mm
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
..
fault.c During VM oom condition, kill all threads in process group 2007-10-16 09:42:52 -07:00
generic.c [SPARC64]: Fix X server hangs due to large pages. 2006-08-29 21:23:31 -07:00
hugetlbpage.c hugepage: fix broken check for offset alignment in hugepage mappings 2007-08-31 01:42:23 -07:00
init.c Introduce flags for reserve_bootmem() 2008-02-07 08:42:25 -08:00
Makefile [SPARC64]: Move away from virtual page tables, part 1. 2006-03-20 01:11:13 -08:00
tlb.c [SPARC64]: Disable preemption during flush_tlb_pending(). 2006-04-30 22:54:27 -07:00
tsb.c [SPARC64]: Fix build failure when CONFIG_BUG is disabled. 2007-10-31 15:30:52 -07:00
ultra.S [SPARC64]: Kill unused ITAG_MASK macro in ultra.S 2007-10-31 15:30:51 -07:00