diff options
author | Bernhard Walle | 2008-02-07 09:15:17 +0100 |
---|---|---|
committer | Linus Torvalds | 2008-02-07 17:42:25 +0100 |
commit | 72a7fe3967dbf86cb34e24fbf1d957fe24d2f246 (patch) | |
tree | c19f7d0b530577359840e959cce204939caf0649 /arch/x86/mm/discontig_32.c | |
parent | fs menu: small reorg (diff) | |
download | kernel-qcow2-linux-72a7fe3967dbf86cb34e24fbf1d957fe24d2f246.tar.gz kernel-qcow2-linux-72a7fe3967dbf86cb34e24fbf1d957fe24d2f246.tar.xz kernel-qcow2-linux-72a7fe3967dbf86cb34e24fbf1d957fe24d2f246.zip |
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/x86/mm/discontig_32.c')
-rw-r--r-- | arch/x86/mm/discontig_32.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/mm/discontig_32.c b/arch/x86/mm/discontig_32.c index 04b1d20e2613..c394ca0720b8 100644 --- a/arch/x86/mm/discontig_32.c +++ b/arch/x86/mm/discontig_32.c @@ -391,7 +391,8 @@ unsigned long __init setup_memory(void) void __init numa_kva_reserve(void) { if (kva_pages) - reserve_bootmem(PFN_PHYS(kva_start_pfn), PFN_PHYS(kva_pages)); + reserve_bootmem(PFN_PHYS(kva_start_pfn), PFN_PHYS(kva_pages), + BOOTMEM_DEFAULT); } void __init zone_sizes_init(void) |