Cheetah systems can have cpuids as large as 1023, although physical
systems don't have that many cpus.
Only three limitations existed in the kernel preventing arbitrary
NR_CPUS values:
1) dcache dirty cpu state stored in page->flags on
D-cache aliasing platforms. With some build time
calculations and some build-time BUG checks on
page->flags layout, this one was easily solved.
2) The cheetah XCALL delivery code could only handle
a cpumask with up to 32 cpus set. Some simple looping
logic clears that up too.
3) thread_info->cpu was a u8, easily changed to a u16.
There are a few spots in the kernel that still put NR_CPUS
sized arrays on the kernel stack, but that's not a sparc64
specific problem.
Signed-off-by: David S. Miller <davem@davemloft.net>
These messages were very useful when bringing up the
OBP based PCI device scan code, but it's just a lot
of noise every bootup now especially on big machines.
The messages can be re-enabled via 'ofpci_debug=1' on
the kernel command line.
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch removes mismatch section warnings in the
sparc/kernel/time.c file.
Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
Handle arbitrary base and length values as long as they
are multiples of IO_PAGE_SIZE.
Bug found by Arun Kumar Rao.
Signed-off-by: David S. Miller <davem@davemloft.net>
Wire up utimensat/signalfd/timerfd/eventfd syscalls and mark
select/fadvise64/utimes to be ignored by checksyscalls.sh
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
Hi Kyle,
this patch fixes two section mismatches in arch/parisc/kernel:
WARNING: arch/parisc/kernel/built-in.o(.data.read_mostly+0xd8): Section mismatch: reference to .init.text:processor_probe (between 'cpu_driver' and 'boot_cpu_data')
WARNING: arch/parisc/kernel/built-in.o(.text.alloc_pa_dev+0x140): Section mismatch: reference to .init.text:parisc_hardware_description (after 'alloc_pa_dev')
Additionally, mark some tables as constants.
Please apply, Helge
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This trivial patch updates the nslu2 and nas-100d headers to
remove pointless GPIO defines, and updates nslu2-setup.c
accordingly. In addition minor style cleanups to some comments
are included.
Signed-off-by: Michael-Luke Jones <mlj28@cam.ac.uk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch is required as the frequency fixup in nslu2_init does not
run sufficiently early in the boot sequence to take effect. In addition
the dsmg600 setup code behaviour has been improved such that a
'fixup' routine is avoided.
Signed-off-by: Michael-Luke Jones <mlj28@cam.ac.uk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Avila and IXDP4xx support were separated in 2.6.21 so this comment
isn't correct any more.
Signed-off-by: Michael-Luke Jones <mlj28@cam.ac.uk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
[IA64] acpi_get_sysname() should be __init
[IA64] Cleanup acpi header to reuse the generic _PDC defines
[IA64] Fix using uninitialized data in _PDC setup
[IA64] start_secondary() and smp_callin() should be __cpuinit
The meth ethernet driver for the SGI IP32 aka O2 is so far still an old
style driver which does not use the device driver model. This is now
causing issues with some udev based gadgetry in debian-stable. Fixed by
converting the meth driver to a platform device.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
--
Fixes since previous patch:
o Fixed typo in meth_exit_module()
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Section mismatch: reference to .init.text:acpi_find_rsdp
(between 'acpi_get_sysname' and 'acpi_request_vector')
acpi_get_sysname() needs to call the __init function acpi_find_rsdp, but it
doesn't have the __init attribute itself, hence the warning. Luckily it is
only called from machvec_init() which has __init attribute, so the fix
is to define acpi_get_sysname() as __init too.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Silly bug in _PDC data setup. Haven't seen any real side-effects of this one
yet. But, needs fixing regardless.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
WARNING: arch/i386/mach-generic/built-in.o(.data+0xc4): Section mismatch: reference to .init.text: (between 'apic_bigsmp' and 'cpu.4905')
This appears to be resolvable by removing all the __init and __initdata
qualifiers from arch/i386/mach-generic/bigsmp.c
Signed-off-by: William Irwin <bill.irwin@oracle.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
It's not sufficiently documented that CONFIG_HOTPLUG_CPU is required for
suspend/hibernation on SMP.
Point out the non-obvious.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
kmalloc for flush_words resulted in zero size allocation when no
k8_northbridges existed. Short circuit the code path for this case.
Also remove uneeded zeroing of num_k8_northbridges just after checking if
it is zero.
Signed-off-by: Ben Collins <bcollins@ubuntu.com>
Cc: Andi Kleen <ak@suse.de>
Cc: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Make the PTRACE_SYSEMU checking more robust. It will make sure that system
call numbers are reported correctly. If there is a problem, it will disable
PTRACE_SYSEMU use and use PTRACE_SYSCALL instead.
Thanks to Balaji G for helping reproduce this problem.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fix config warning related to select usage:
drivers/macintosh/Kconfig:117:warning: 'select' used by config symbol 'PMAC_APM_EMU' refers to undefined symbol 'SYS_SUPPORTS_APM_EMULATION'
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Mark pte_alloc_one_kernel as __init_refok to fix the following warning:
WARNING: arch/ppc/mm/built-in.o(.text+0x1114): Section mismatch: reference to .init.text:early_get_page (between 'pte_alloc_one_kernel' and 'v_mapped_by_tlbcam')
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Mark pte_alloc_one_kernel as __init_refok to fix the following warning:
WARNING: arch/powerpc/mm/built-in.o(.text+0x1068): Section mismatch: reference to .init.text:early_get_page (between 'pte_alloc_one_kernel' and 'steal_context')
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This patch fix the following Section mismatch warnings in powerpc code.
WARNING: arch/powerpc/platforms/built-in.o - Section mismatch: reference to .init.data:mv643xx_eth_pd_devs from .text between 'mv643xx_eth_add_pds' (at offset 0x9ed2) and 'gg2_read_config'
WARNING: arch/powerpc/platforms/built-in.o - Section mismatch: reference to .init.data:mv643xx_eth_pd_devs from .text between 'mv643xx_eth_add_pds' (at offset 0x9ed6) and 'gg2_read_config'
WARNING: arch/powerpc/platforms/built-in.o - Section mismatch: reference to .init.text:note_scsi_host from __ksymtab between '__ksymtab_note_scsi_host' (at offset 0x8) and '__ksymtab_sys_ctrler'
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
The UCC_GETH Kconfig option in drivers/net/Kconfig had a line to select the
UCC_FAST option is arch/powerpc/sysdev/qe_lib/Kconfig, which is only used
on PowerPC builds. On other architectures, this would generated a warning.
The fix is to have UCC_FAST depend on UCC_GETH.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Unbreak lite5200 dts, which were broken by
5c1992f833
Signed-off-by: Domen Puncer <domen.puncer@telargo.com>
Acked-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
We get the following warnings in various ARCH=ppc builds:
WARNING: "ee_restarts" [arch/ppc/kernel/built-in] is COMMON symbol
WARNING: "fee_restarts" [arch/ppc/kernel/built-in] is COMMON symbol
WARNING: "htab_hash_searches" [arch/ppc/mm/built-in] is COMMON symbol
WARNING: "next_slot" [arch/ppc/mm/built-in] is COMMON symbol
WARNING: "mmu_hash_lock" [arch/ppc/mm/built-in] is COMMON symbol
WARNING: "primary_pteg_full" [arch/ppc/mm/built-in] is COMMON symbol
WARNING: "global_dbcr0" [arch/ppc/kernel/built-in] is COMMON symbol
Switch to local symbols for ee_restarts, fee_restarts, and global_dbcr0 and
global symbols for mmu_hash_lock, next_slot, primary_pteg_full, and
htab_hash_searches.
(except mmu_hash_lock which is global) and
space directive instead.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
The LWS debugging code on parisc is wrongly enabled due to a bug in the
use of the preprocessor directives. This debugging code is not thread
safe and causes problems with a recent glibc on SMP kernels.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
As side effect, remove one more ->get_info user and a novel approach of content
generation:
sprintf(buf, "%sfoo", buf, ...);
sprintf(buf, "%sbar", buf, ...);
...
Compile-tested.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
Add VERIFY_WRITE check in the beginning like compat_sys_getdents() EFAULT on
parisc if put_user() fails.
Signed-off-by: Alexandr Andreev <aandreev@openvz.org>
Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Matthew Wilcox <willy@debian.org>
Cc: Grant Grundler <grundler@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
[IA64] fix kmalloc(0) in arch/ia64/pci/pci.c
[IA64] Only unwind non-running tasks.
[IA64] Improve unwind checking.
[IA64] Yet another section mismatch warning
[IA64] Fix bogus messages about system calls not implemented.
Hiroyuki Kamezawa reported the problem that pci_acpi_scan_root() of
ia64 might call kmalloc_node() with zero size.
Currently ia64's pci_acpi_scan_root() assumes that _CRS method of root
bridge has at least one resource window. But, the root bridges that
has no resource window must be taken into account.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Unwinding a running task has proven problematic.
In one instance, the running task was attempting to unwind itself and
received an interrupt between when get_wchan allocated local variables on
the stack and when unw_init_from_blocked_task was called which resulted
in unw_init_frame_info to place this tasks task_struct pointer over the
switch stack's ar_bspstore entry.
Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This patch adds some sanity checks to keep register and memory stack
pointers in the unw_frame_info structure within the tasks stack address
range.
Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Some missing fixup for the removal of 4 level fixup header.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Sam's recent change in 7664709b44
broke things for us because we ended up with *(.text.*) before
*(.text), whereas previously *(.text) was first. This was
important because the start of the text section contains the
kernel entry point.
In fact, we don't need that *(.text.*) thing anymore and it
incorrectly matched .text.init.refok, thus putting it before
.text. .. ouch !
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
pmc.c has:
#ifndef MMCR0_PMA0
#define MMCR0_PMA0 0
This one took a while to find. Unfortunately its the wrong define
(number 0 vs letter O). Its probably worth removing this override, since
if our includes get screwed up we will have the same (hard to debug)
failure.
Fix it simply for now, so that we can backport to stable.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
