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| author | Bernhard Walle <bwalle@suse.de> | 2008-02-07 09:15:17 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-07 17:42:25 +0100 |
| commit | 72a7fe3967dbf86cb34e24fbf1d957fe24d2f246 (patch) | |
| tree | c19f7d0b530577359840e959cce204939caf0649 /arch/x86/mm/srat_64.c | |
| parent | fs menu: small reorg (diff) | |
| download | linux-72a7fe3967dbf86cb34e24fbf1d957fe24d2f246.tar.xz 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/srat_64.c')
| -rw-r--r-- | arch/x86/mm/srat_64.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/mm/srat_64.c b/arch/x86/mm/srat_64.c index 65416f843e59..ecd91ea8a8ae 100644 --- a/arch/x86/mm/srat_64.c +++ b/arch/x86/mm/srat_64.c @@ -488,7 +488,8 @@ void __init srat_reserve_add_area(int nodeid) printk(KERN_INFO "SRAT: This will cost you %Lu MB of " "pre-allocated memory.\n", (unsigned long long)total_mb); reserve_bootmem_node(NODE_DATA(nodeid), nodes_add[nodeid].start, - nodes_add[nodeid].end - nodes_add[nodeid].start); + nodes_add[nodeid].end - nodes_add[nodeid].start, + BOOTMEM_DEFAULT); } } |