Yinghai Lu 51b361b400 x86-64, NUMA: Fix numa_emulation code with node0 without RAM ... On one system that does not have RAM on node0. When numa_emulation is compiled in, and 1. boot system without numa=fake... 2. or boot system with numa=fake=128 to make emulation fail will get: [ 0.092026] ------------[ cut here ]------------ [ 0.096005] kernel BUG at arch/x86/mm/numa_emulation.c:439! [ 0.096005] invalid opcode: 0000 [#1] SMP [ 0.096005] last sysfs file: [ 0.096005] CPU 0 [ 0.096005] Modules linked in: [ 0.096005] [ 0.096005] Pid: 0, comm: swapper Not tainted 2.6.38-rc6-tip-yh-03869-gcb0491d-dirty #684 Sun Microsystems Sun Fire X4240/Sun Fire X4240 [ 0.096005] RIP: 0010:[<ffffffff81cdc65b>] [<ffffffff81cdc65b>] numa_add_cpu+0x56/0xcf [ 0.096005] RSP: 0000:ffffffff82437ed8 EFLAGS: 00010246 ... [ 0.096005] Call Trace: [ 0.096005] [<ffffffff81cd7931>] identify_cpu+0x2d7/0x2df [ 0.096005] [<ffffffff827e54fa>] identify_boot_cpu+0x10/0x30 [ 0.096005] [<ffffffff827e5704>] check_bugs+0x9/0x2d [ 0.096005] [<ffffffff827dceda>] start_kernel+0x3d7/0x3f1 [ 0.096005] [<ffffffff827dc2cc>] x86_64_start_reservations+0x9c/0xa0 [ 0.096005] [<ffffffff827dc4ad>] x86_64_start_kernel+0x1dd/0x1e8 [ 0.096005] Code: 74 06 48 8d 04 90 eb 0f 48 c7 c0 30 d9 00 00 48 03 04 d5 90 0f 60 82 8b 00 83 f8 ff 74 0d 0f a3 05 8b 7e 92 00 19 d2 85 d2 75 02 <0f> 0b 48 98 be 00 01 00 00 48 c7 c7 e0 44 60 82 44 8b 2c 85 e0 [ 0.096005] RIP [<ffffffff81cdc65b>] numa_add_cpu+0x56/0xcf [ 0.096005] RSP <ffffffff82437ed8> [ 0.096026] ---[ end trace a7919e7f17c0a725 ]--- We need to use early_cpu_to_node() directly, because numa_cpu_node() will return node0 that is not onlined. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Tejun Heo <tj@kernel.org>		2011-03-04 14:49:28 +01:00
..
alpha	alpha: Use generic irq Kconfig	2011-01-21 11:55:31 +01:00
arm	ARM: SAMSUNG: Ensure struct sys_device is declared in plat/pm.h	2011-02-11 10:25:57 +09:00
avr32	avr32: add missing include causing undefined pgtable_page_* references	2011-01-26 12:35:15 +01:00
blackfin	serial: bfin_5xx: split uart RX lock from uart port lock to avoid deadlock	2011-02-03 14:44:54 -08:00
cris	cris: Use generic irq Kconfig	2011-01-21 11:55:25 +01:00
frv	frv: Use generic irq Kconfig	2011-01-21 11:55:32 +01:00
h8300	h8300: Use generic irq Kconfig	2011-01-21 11:55:24 +01:00
ia64	ia64: Use generic irq Kconfig	2011-01-21 11:55:32 +01:00
m32r	m32r: Fixup last __do_IRQ leftover	2011-02-05 21:46:35 +01:00
m68k	m68k/amiga: Fix "debug=mem"	2011-01-23 11:24:42 +01:00
m68knommu	m68knommu: Use generic irq Kconfig	2011-01-21 11:55:32 +01:00
microblaze	microblaze: Fix msr instruction detection	2011-02-07 19:13:01 +01:00
mips	genirq: Remove __do_IRQ	2011-01-21 11:55:31 +01:00
mn10300	mn10300: Use generic irq Kconfig	2011-01-21 11:55:33 +01:00
parisc	console: rename acquire/release_console_sem() to console_lock/unlock()	2011-01-26 10:50:06 +10:00
powerpc	powerpc: Fix hcall tracepoint recursion	2011-02-07 13:06:08 +11:00
s390	[S390] reset default for CONFIG_CHSC_SCH	2011-01-31 11:30:21 +01:00
score	score: Use generic irq Kconfig	2011-01-21 11:55:34 +01:00
sh	Merge branch 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6	2011-01-26 09:00:17 +10:00
sparc	sparc: Use generic irq Kconfig	2011-01-21 11:55:34 +01:00
tile	tile: Use generic irq Kconfig	2011-01-21 11:55:34 +01:00
um	um: Use generic irq Kconfig	2011-01-21 11:55:35 +01:00
x86	x86-64, NUMA: Fix numa_emulation code with node0 without RAM	2011-03-04 14:49:28 +01:00
xtensa	kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT	2011-01-20 17:02:05 -08:00
.gitignore
Kconfig	[S390] mutex: Introduce arch_mutex_cpu_relax()	2011-01-05 12:47:31 +01:00