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/avr32/kernel | |
| 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/avr32/kernel')
| -rw-r--r-- | arch/avr32/kernel/setup.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/avr32/kernel/setup.c b/arch/avr32/kernel/setup.c index 4b4c1884e1c5..e66a07a928cd 100644 --- a/arch/avr32/kernel/setup.c +++ b/arch/avr32/kernel/setup.c @@ -489,7 +489,8 @@ static void __init setup_bootmem(void) /* Reserve space for the bootmem bitmap... */ reserve_bootmem_node(NODE_DATA(node), PFN_PHYS(bootmap_pfn), - bootmap_size); + bootmap_size, + BOOTMEM_DEFAULT); /* ...and any other reserved regions. */ for (res = reserved; res; res = res->sibling) { @@ -505,7 +506,8 @@ static void __init setup_bootmem(void) && res->end < PFN_PHYS(max_pfn)) reserve_bootmem_node( NODE_DATA(node), res->start, - res->end - res->start + 1); + res->end - res->start + 1, + BOOTMEM_DEFAULT); } node_set_online(node); |