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| 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/mips | |
| parent | 25fad945a7f7ff2cf06e437381c6a1121784dbd9 (diff) | |
| download | op-kernel-dev-72a7fe3967dbf86cb34e24fbf1d957fe24d2f246.zip op-kernel-dev-72a7fe3967dbf86cb34e24fbf1d957fe24d2f246.tar.gz | |
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/mips')
| -rw-r--r-- | arch/mips/kernel/setup.c | 4 | ||||
| -rw-r--r-- | arch/mips/sgi-ip27/ip27-memory.c | 3 |
2 files changed, 4 insertions, 3 deletions
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c index c032409..39f3dfe 100644 --- a/arch/mips/kernel/setup.c +++ b/arch/mips/kernel/setup.c @@ -232,7 +232,7 @@ static void __init finalize_initrd(void) goto disable; } - reserve_bootmem(__pa(initrd_start), size); + reserve_bootmem(__pa(initrd_start), size, BOOTMEM_DEFAULT); initrd_below_start_ok = 1; printk(KERN_INFO "Initial ramdisk at: 0x%lx (%lu bytes)\n", @@ -413,7 +413,7 @@ static void __init bootmem_init(void) /* * Reserve the bootmap memory. */ - reserve_bootmem(PFN_PHYS(mapstart), bootmap_size); + reserve_bootmem(PFN_PHYS(mapstart), bootmap_size, BOOTMEM_DEFAULT); /* * Reserve initrd memory if needed. diff --git a/arch/mips/sgi-ip27/ip27-memory.c b/arch/mips/sgi-ip27/ip27-memory.c index e5e023f..bf438d0 100644 --- a/arch/mips/sgi-ip27/ip27-memory.c +++ b/arch/mips/sgi-ip27/ip27-memory.c @@ -465,7 +465,8 @@ static void __init node_mem_init(cnodeid_t node) free_bootmem_node(NODE_DATA(node), slot_firstpfn << PAGE_SHIFT, (slot_lastpfn - slot_firstpfn) << PAGE_SHIFT); reserve_bootmem_node(NODE_DATA(node), slot_firstpfn << PAGE_SHIFT, - ((slot_freepfn - slot_firstpfn) << PAGE_SHIFT) + bootmap_size); + ((slot_freepfn - slot_firstpfn) << PAGE_SHIFT) + bootmap_size, + BOOTMEM_DEFAULT); } /* |
