diff options
| author | Bernhard Walle <bwalle@suse.de> | 2008-02-07 00:15:17 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-07 08:42:25 -0800 |
| commit | 72a7fe3967dbf86cb34e24fbf1d957fe24d2f246 (patch) | |
| tree | c19f7d0b530577359840e959cce204939caf0649 /arch/sh/mm/numa.c | |
| parent | 25fad945a7f7ff2cf06e437381c6a1121784dbd9 (diff) | |
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>
Diffstat (limited to 'arch/sh/mm/numa.c')
| -rw-r--r-- | arch/sh/mm/numa.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/sh/mm/numa.c b/arch/sh/mm/numa.c index 8aff065dd307..2de7302724fc 100644 --- a/arch/sh/mm/numa.c +++ b/arch/sh/mm/numa.c @@ -80,9 +80,9 @@ void __init setup_bootmem_node(int nid, unsigned long start, unsigned long end) /* Reserve the pgdat and bootmap space with the bootmem allocator */ reserve_bootmem_node(NODE_DATA(nid), start_pfn << PAGE_SHIFT, - sizeof(struct pglist_data)); + sizeof(struct pglist_data), BOOTMEM_DEFAULT); reserve_bootmem_node(NODE_DATA(nid), free_pfn << PAGE_SHIFT, - bootmap_pages << PAGE_SHIFT); + bootmap_pages << PAGE_SHIFT, BOOTMEM_DEFAULT); /* It's up */ node_set_online(nid); |