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Tejun Heo 74d46d6b2d percpu, sparc64: fix sparse possible cpu map handling 
percpu code has been assuming num_possible_cpus() == nr_cpu_ids which
is incorrect if cpu_possible_map contains holes.  This causes percpu
code to access beyond allocated memories and vmalloc areas.  On a
sparc64 machine with cpus 0 and 2 (u60), this triggers the following
warning or fails boot.

 WARNING: at /devel/tj/os/work/mm/vmalloc.c:106 vmap_page_range_noflush+0x1f0/0x240()
 Modules linked in:
 Call Trace:
  [00000000004b17d0] vmap_page_range_noflush+0x1f0/0x240
  [00000000004b1840] map_vm_area+0x20/0x60
  [00000000004b1950] __vmalloc_area_node+0xd0/0x160
  [0000000000593434] deflate_init+0x14/0xe0
  [0000000000583b94] __crypto_alloc_tfm+0xd4/0x1e0
  [00000000005844f0] crypto_alloc_base+0x50/0xa0
  [000000000058b898] alg_test_comp+0x18/0x80
  [000000000058dad4] alg_test+0x54/0x180
  [000000000058af00] cryptomgr_test+0x40/0x60
  [0000000000473098] kthread+0x58/0x80
  [000000000042b590] kernel_thread+0x30/0x60
  [0000000000472fd0] kthreadd+0xf0/0x160
 ---[ end trace 429b268a213317ba ]---

This patch fixes generic percpu functions and sparc64
setup_per_cpu_areas() so that they handle sparse cpu_possible_map
properly.

Please note that on x86, cpu_possible_map() doesn't contain holes and
thus num_possible_cpus() == nr_cpu_ids and this patch doesn't cause
any behavior difference.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Ingo Molnar <mingo@elte.hu>
 		2009-08-14 13:20:53 +09:00
..
.gitignore sparc: gitignore a few files 2008-12-04 09:17:15 -08:00
Makefile sparc: move of_device common code to of_device_common 2009-06-16 04:56:49 -07:00
apc.c sparc: correct section of apc_no_idle 2008-10-22 21:53:43 -07:00
asm-offsets.c sparc,sparc64: unify asm-offsets.c 2008-12-04 09:17:12 -08:00
audit.c sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
auxio_32.c sparc: move EXPORT_SYMBOL to the symbols definition 2009-01-08 16:58:05 -08:00
auxio_64.c sparc64: move EXPORT_SYMBOL to the symbols definition 2009-01-08 16:58:20 -08:00
central.c sparc64: Initialize FHC/CLOCK LED platform_device 'id' field correctly. 2009-01-19 13:27:15 -08:00
cherrs.S sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
chmc.c sparc64: Fix crashes in jbusmc_print_dimm() 2009-02-11 00:54:07 -08:00
compat_audit.c sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
cpu.c sparc: Probe PMU type and record in sparc_pmu_type. 2009-01-28 17:27:14 -08:00
cpumap.c sparc64: fix and optimize irq distribution 2009-06-16 04:56:28 -07:00
cpumap.h sparc64: fix and optimize irq distribution 2009-06-16 04:56:28 -07:00
devices.c sparc: drop CONFIG_SUN_AUXIO 2008-12-04 13:26:31 -08:00
dma.c sparc: remove dma-mapping_{32|64}.h 2009-06-16 04:56:47 -07:00
dma.h sparc32: Implement more generic dma_*() interfaces. 2008-08-29 02:13:14 -07:00
ds.c sparc64: Defer cpu_data() setup until end of per-cpu data initialization. 2009-06-16 04:56:22 -07:00
dtlb_miss.S sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
dtlb_prot.S sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
ebus.c sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
entry.S [CVE-2009-0029] Remove __attribute__((weak)) from sys_pipe/sys_pipe2 2009-01-14 14:15:15 +01:00
entry.h sparc: fix sparse warnings in irq_32.c 2008-12-08 01:08:24 -08:00
etrap_32.S sparc: prepare kernel/ for unification 2008-12-04 09:17:20 -08:00
etrap_64.S sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
fpu_traps.S sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
ftrace.c sparc64: Add proper dynamic ftrace support. 2009-06-16 04:56:53 -07:00
getsetcc.S sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
head_32.S sparc: cleanup references to deprecated .text.init* sections. 2009-04-27 19:51:58 -07:00
head_64.S sparc64: Store per-cpu offset in trap_block[] 2009-06-16 04:56:11 -07:00
helpers.S sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
hvapi.c sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
hvcalls.S sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
hvtramp.S sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
idprom.c sparc: move EXPORT_SYMBOL to the symbols definition 2009-01-08 16:58:05 -08:00
init_task.c mm: consolidate init_mm definition 2009-06-16 19:47:28 -07:00
iommu.c sparc: use dma_map_page instead of dma_map_single 2009-06-16 04:56:45 -07:00
iommu_common.h sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
ioport.c sparc: move EXPORT_SYMBOL to the symbols definition 2009-01-08 16:58:05 -08:00
irq.h sparc32: Kill clear_profile_irq btfixup entry. 2008-09-19 21:17:59 -07:00
irq_32.c cpumask: remove references to struct irqaction's mask field. 2009-03-30 22:05:14 +10:30
irq_64.c sparc64: Don't use alloc_bootmem() in init_IRQ() code paths. 2009-06-25 19:00:47 -07:00
itlb_miss.S sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
ivec.S sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
kernel.h sparc: Probe PMU type and record in sparc_pmu_type. 2009-01-28 17:27:14 -08:00
kgdb_32.c sparc: add '32' suffix to reg_window, sigcontext, __siginfo_t 2009-01-02 19:32:59 -08:00
kgdb_64.c sparc64: Reschedule KGDB capture to a software interrupt. 2009-03-18 23:51:57 -07:00
kprobes.c trivial: fix then -> than typos in comments and documentation 2009-01-06 11:28:06 +01:00
kstack.h sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
ktlb.S sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
ldc.c sparc: remove some pointless conditionals before kfree() 2009-04-15 03:04:56 -07:00
led.c proc 2/2: remove struct proc_dir_entry::owner 2009-03-31 01:14:44 +04:00
mdesc.c sparc64: Defer cpu_data() setup until end of per-cpu data initialization. 2009-06-16 04:56:22 -07:00
misctrap.S sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
module.c module: cleanup FIXME comments about trimming exception table entries. 2009-06-12 21:47:05 +09:30
muldiv.c sparc: add '32' suffix to reg_window, sigcontext, __siginfo_t 2009-01-02 19:32:59 -08:00
nmi.c sparc64: Fix reset hangs on Niagara systems. 2009-03-29 15:40:33 -07:00
of_device_32.c sparc: move of_device common code to of_device_common 2009-06-16 04:56:49 -07:00
of_device_64.c sparc: move of_device common code to of_device_common 2009-06-16 04:56:49 -07:00
of_device_common.c sparc: move of_device common code to of_device_common 2009-06-16 04:56:49 -07:00
of_device_common.h sparc: move of_device common code to of_device_common 2009-06-16 04:56:49 -07:00
pci.c Delete pcibios_select_root 2009-06-17 14:04:42 -07:00
pci_common.c sparc64: Fix crash with /proc/iomem 2009-03-18 23:53:16 -07:00
pci_fire.c sparc64: Fix section mismatch warnings in PCI controller drivers. 2009-04-08 03:28:15 -07:00
pci_impl.h sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
pci_msi.c sparc64: Use unsigned long long for u64. 2009-01-06 13:19:28 -08:00
pci_psycho.c sparc64: Fix section mismatch warnings in PCI controller drivers. 2009-04-08 03:28:15 -07:00
pci_sabre.c sparc64: Fix section mismatch warnings in PCI controller drivers. 2009-04-08 03:28:15 -07:00
pci_schizo.c sparc64: Use unsigned long long for u64. 2009-01-06 13:19:28 -08:00
pci_sun4v.c sparc: use dma_map_page instead of dma_map_single 2009-06-16 04:56:45 -07:00
pci_sun4v.h sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
pci_sun4v_asm.S sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
pcic.c sparc: move EXPORT_SYMBOL to the symbols definition 2009-01-08 16:58:05 -08:00
pcr.c sparc64: Don't hook up pcr_ops on spitfire chips. 2009-02-05 23:59:04 -08:00
pmc.c sparc: fix trivial style issues in kernel/pmc.c 2008-12-08 01:02:55 -08:00
power.c sparc64: Fix section mismatch warnings in power driver. 2009-04-08 03:27:52 -07:00
process_32.c Simplify copy_thread() 2009-04-02 19:04:51 -07:00
process_64.c Simplify copy_thread() 2009-04-02 19:04:51 -07:00
prom.h sparc: Call OF and MD cpu scanning explicitly from paging_init() 2009-06-16 04:56:19 -07:00
prom_32.c sparc: Restore irq_trans_init() call in prom_create_node(). 2008-12-07 00:46:33 -08:00
prom_64.c sparc64: Defer cpu_data() setup until end of per-cpu data initialization. 2009-06-16 04:56:22 -07:00
prom_common.c sparc: Call OF and MD cpu scanning explicitly from paging_init() 2009-06-16 04:56:19 -07:00
prom_irqtrans.c sparc64: Use unsigned long long for u64. 2009-01-06 13:19:28 -08:00
psycho_common.c sparc64: fix warnings in psycho_common after ull conversion 2009-01-08 11:37:19 -08:00
psycho_common.h sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
ptrace_32.c headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
ptrace_64.c headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
reboot.c sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
rtrap_32.S sparc: prepare kernel/ for unification 2008-12-04 09:17:20 -08:00
rtrap_64.S sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
sbus.c sparc64: move EXPORT_SYMBOL to the symbols definition 2009-01-08 16:58:20 -08:00
setup_32.c sparc: move EXPORT_SYMBOL to the symbols definition 2009-01-08 16:58:05 -08:00
setup_64.c sparc: Probe PMU type and record in sparc_pmu_type. 2009-01-28 17:27:14 -08:00
signal32.c sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
signal_32.c sparc: add '32' suffix to reg_window, sigcontext, __siginfo_t 2009-01-02 19:32:59 -08:00
signal_64.c sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
smp_32.c cpumask: use mm_cpumask() wrapper: sparc 2009-03-16 14:40:39 +10:30
smp_64.c percpu, sparc64: fix sparse possible cpu map handling 2009-08-14 13:20:53 +09:00
sparc_ksyms_32.c sparc: Eliminate PROMLIB_INTERNAL as it does nothing 2009-01-08 16:59:01 -08:00
sparc_ksyms_64.c sparc64: Fix UP build failure. 2009-01-13 17:38:24 -08:00
spiterrs.S sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
sstate.c sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
stacktrace.c sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
starfire.c sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
sun4c_irq.c sparc: Add missing of_node_put 2008-12-04 09:17:22 -08:00
sun4d_irq.c cpumask: remove references to struct irqaction's mask field. 2009-03-30 22:05:14 +10:30
sun4d_smp.c cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask_bits.: sparc 2009-03-16 14:40:24 +10:30
sun4m_irq.c sparc: Add missing of_node_put 2008-12-04 09:17:22 -08:00
sun4m_smp.c cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask_bits.: sparc 2009-03-16 14:40:24 +10:30
sun4v_ivec.S sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
sun4v_tlb_miss.S sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
sys32.S sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
sys_sparc32.c Separate out common fstatat code into vfs_fstatat 2009-04-20 23:02:51 -04:00
sys_sparc_32.c sparc: prepare kernel/ for unification 2008-12-04 09:17:20 -08:00
sys_sparc_64.c sparc64: Annotate sparc64 specific syscalls with SYSCALL_DEFINEx() 2009-01-19 21:11:27 -08:00
syscalls.S sparc64: Annotate sparc64 specific syscalls with SYSCALL_DEFINEx() 2009-01-19 21:11:27 -08:00
sysfs.c sparc: fix hardirq.h removal fallout 2008-12-26 15:33:07 -08:00
systbls.h sparc64: Annotate sparc64 specific syscalls with SYSCALL_DEFINEx() 2009-01-19 21:11:27 -08:00
systbls_32.S sparc: Wire up sys_rt_tgsigqueueinfo(). 2009-06-16 04:56:58 -07:00
systbls_64.S sparc: Wire up sys_rt_tgsigqueueinfo(). 2009-06-16 04:56:58 -07:00
tadpole.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
tick14.c sparc32: Delete claim_ticker14(). 2008-09-19 21:18:01 -07:00
time_32.c sparc: move EXPORT_SYMBOL to the symbols definition 2009-01-08 16:58:05 -08:00
time_64.c headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
trampoline_32.S sparc: prepare kernel/ for unification 2008-12-04 09:17:20 -08:00
trampoline_64.S sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
traps_32.c headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
traps_64.c sparc64: Use BUILD_BUG_ON() in trap_init(). 2009-06-16 04:56:13 -07:00
tsb.S sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
ttable.S sparc64: Reschedule KGDB capture to a software interrupt. 2009-03-18 23:51:57 -07:00
una_asm_32.S sparc: prepare kernel/ for unification 2008-12-04 09:17:20 -08:00
una_asm_64.S sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
unaligned_32.c sparc: add '32' suffix to reg_window, sigcontext, __siginfo_t 2009-01-02 19:32:59 -08:00
unaligned_64.c sparc: Most unaligned_64.c tweaks for branch tracer warnings. 2009-01-08 16:52:36 -08:00
us2e_cpufreq.c sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
us3_cpufreq.c sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
utrap.S sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
vio.c sparc: remove driver-core BUS_ID_SIZE 2009-07-12 13:02:09 -07:00
viohs.c sparc64: refactor code in viohs.c 2009-01-06 12:46:46 -08:00
visemul.c sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
vmlinux.lds.S sparc: convert to use __HEAD and HEAD_TEXT macros. 2009-04-26 09:20:39 -07:00
windows.c sparc: add '32' suffix to reg_window, sigcontext, __siginfo_t 2009-01-02 19:32:59 -08:00
winfixup.S sparc,sparc64: unify kernel/ 2008-12-04 09:17:21 -08:00
wof.S sparc/kernel/: possible cleanups 2008-07-17 21:37:46 -07:00
wuf.S sparc/kernel/: possible cleanups 2008-07-17 21:37:46 -07:00