19 Mar, 2006
8 commits
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Signed-off-by: Ralf Baechle
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From Dave Johnson :
sb1250_gettimeoffset() simply reads the current cpu 0 timer remaining
value, however once this counter reaches 0 and the interrupt is raised,
it immediately resets and begins to count down again.If sb1250_gettimeoffset() is called on cpu 1 via do_gettimeofday() after
the timer has reset but prior to cpu 0 processing the interrupt and
taking write_seqlock() in timer_interrupt() it will return a full value
(or close to it) causing time to jump backwards 1ms. Once cpu 0 handles
the interrupt and timer_interrupt() gets far enough along it will jump
forward 1ms.Fix this problem by implementing mips_hpt_*() on sb1250 using a spare
timer unrelated to the existing periodic interrupt timers. It runs at
1Mhz with a full 23bit counter. This eliminated the custom
do_gettimeoffset() for sb1250 and allowed use of the generic
fixed_rate_gettimeoffset() using mips_hpt_*() and timerhi/timerlo.Signed-off-by: Ralf Baechle
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From Dave Johnson :
The timers need to be loaded with 1 less than the desired interval not
the interval itself.Signed-off-by: Ralf Baechle
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From Dave Johnson :
* do_timer() expects the arch-specific handler to take the lock as it
modifies jiffies[_64] and xtime.
* writing timerhi/lo in timer_interrupt() will mess up
fixed_rate_gettimeoffset() which reads timerhi/lo.Signed-off-by: Ralf Baechle
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Signed-off-by: Matej Kupljen
Signed-off-by: Ralf Baechle -
Signed-off-by: Sergei Shtylyov
Signed-off-by: Ralf Baechle -
If dcache_size != icache_size or dcache_size != scache_size, or
set-associative cache, icache/scache does not flushed properly. Make
blast_?cache_page_indexed() masks its index value correctly. Also,
use physical address for physically indexed pcache/scache.Signed-off-by: Atsushi Nemoto
Signed-off-by: Ralf Baechle -
This breaks the kernel build if sgiwd93 was configured as a module.
Signed-off-by: Ralf Baechle
17 Mar, 2006
2 commits
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Bryce reported a bug wherein offlining CPU0 (on x86 box) and then
subsequently onlining it resulted in a lockup.On x86, CPU0 is never offlined. The subsequent attempt to online CPU0
doesn't take that into account. It actually tries to bootup the already
booted CPU. Following patch fixes the problem (as acknowledged by Bryce).
Please consider for inclusion in 2.6.16.Check if cpu is already online.
Signed-off-by: Srivatsa Vaddagiri
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
* git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge:
powerpc: update defconfigs
[PATCH] powerpc: properly configure DDR/P5IOC children devs
[PATCH] powerpc: remove duplicate EXPORT_SYMBOLS
[PATCH] powerpc: RTC memory corruption
[PATCH] powerpc: enable NAP only on cpus who support it to avoid memory corruption
[PATCH] powerpc: Clarify wording for CRASH_DUMP Kconfig option
[PATCH] powerpc/64: enable CONFIG_BLK_DEV_SL82C105
[PATCH] powerpc: correct cacheflush loop in zImage
powerpc: Fix problem with time going backwards
powerpc: Disallow lparcfg being a module
16 Mar, 2006
14 commits
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Signed-off-by: Paul Mackerras
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The dynamic add path for PCI Host Bridges can fail to configure children
adapters under P5IOC controllers. It fails to properly fixup bus/device
resources, and it fails to properly enable EEH. Both of these steps
need to occur before any children devices are enabled in
pci_bus_add_devices().Signed-off-by: John Rose
Signed-off-by: Paul Mackerras -
remove warnings when building a 64bit kernel.
smp_call_function triggers also with 32bit kernel.WARNING: vmlinux: duplicate symbol 'smp_call_function' previous definition was in vmlinux
arch/powerpc/kernel/ppc_ksyms.c:164:EXPORT_SYMBOL(smp_call_function);
arch/powerpc/kernel/smp.c:300:EXPORT_SYMBOL(smp_call_function);WARNING: vmlinux: duplicate symbol 'ioremap' previous definition was in vmlinux
arch/powerpc/kernel/ppc_ksyms.c:113:EXPORT_SYMBOL(ioremap);
arch/powerpc/mm/pgtable_64.c:321:EXPORT_SYMBOL(ioremap);WARNING: vmlinux: duplicate symbol '__ioremap' previous definition was in vmlinux
arch/powerpc/kernel/ppc_ksyms.c:117:EXPORT_SYMBOL(__ioremap);
arch/powerpc/mm/pgtable_64.c:322:EXPORT_SYMBOL(__ioremap);WARNING: vmlinux: duplicate symbol 'iounmap' previous definition was in vmlinux
arch/powerpc/kernel/ppc_ksyms.c:118:EXPORT_SYMBOL(iounmap);
arch/powerpc/mm/pgtable_64.c:323:EXPORT_SYMBOL(iounmap);Signed-off-by: Olaf Hering
Signed-off-by: Paul Mackerras -
We should be memset'ing the data we are pointing to, not the pointer
itself. This is in an error path so we probably don't hit it much.Signed-off-by: Michael Neuling
Signed-off-by: Paul Mackerras -
This patch fixes incorrect setting of powersave_nap to 1 on all
PowerMacs, potentially causing memory corruption on some models. This
bug was introuced by me during the 32/64 bits merge.Signed-off-by: Benjamin Herrenschmidt
Signed-off-by: Paul Mackerras -
The wording of the CRASH_DUMP Kconfig option is not very clear. It gives you a
kernel that can be used _as_ the kdump kernel, not a kernel that can boot into
a kdump kernel.Signed-off-by: Michael Ellerman
Signed-off-by: Paul Mackerras -
Enable the onboard IDE driver for p610, p615 and p630.
They have the CD connected to this card. All other RS/6000 systems with this
controller have no connectors and dont need this option.Signed-off-by: Olaf Hering
Signed-off-by: Paul Mackerras -
Correct the loop for cacheflush. No idea where I copied the code from,
but the original does not work correct. Maybe the flush is not needed.Signed-off-by: Olaf Hering
Signed-off-by: Paul Mackerras -
The recent changes to keep gettimeofday in sync with xtime had the side
effect that it was occasionally possible for the time reported by
gettimeofday to go back by a microsecond. There were two reasons:
(1) when we recalculated the offsets used by gettimeofday every 2^31
timebase ticks, we lost an accumulated fractional microsecond, and
(2) because the update is done some time after the notional start of
jiffy, if ntp is slowing the clock, it is possible to see time go backwards
when the timebase factor gets reduced.This fixes it by (a) slowing the gettimeofday clock by about 1us in
2^31 timebase ticks (a factor of less than 1 in 3.7 million), and (b)
adjusting the timebase offsets in the rare case that the gettimeofday
result could possibly go backwards (i.e. when ntp is slowing the clock
and the timer interrupt is late). In this case the adjustment will
reduce to zero eventually because of (a).Signed-off-by: Paul Mackerras
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Patch from Ben Dooks
arch/arm/kernel/setup.c declares mem_fclk_21285 when
this is already declared in include/asm-arm/system.hSigned-off-by: Ben Dooks
Signed-off-by: Russell King -
Patch from Ben Dooks
arch/arm/kernel/compat.c exports two functions,
convert_to_tag_list and squash_mem_tags which
are not defined in any header files, and not
used outside arch/arm/kernel.Signed-off-by: Ben Dooks
Signed-off-by: Russell King -
Patch from Ben Dooks
Fix the following warnings from sparse:
arch/arm/kernel/process.c:86:6: warning: symbol 'default_idle' was not declared. Should it be static?
arch/arm/kernel/process.c:378:5: warning: symbol 'dump_fpu' was not declared. Should it be static?Include for dump_fpu() decleration, and
make default_idle() static as it is not used outside the file.Signed-off-by: Ben Dooks
Signed-off-by: Russell King -
Patch from Albrecht Dreß
Add DMA resources to s3c2410 spi platform devices - dma_(alloc|free)_coherent should now work as expected.
Signed-off-by: Albrecht Dreß
Signed-off-by: Ben Dooks
Signed-off-by: Russell King -
Patch from Pavel Machek
Enable frontlight during collie bootup, so that display is actually
readable in anything other than bright sunlight.Signed-off-by: Pavel Machek
Signed-off-by: Richard Purdie
Signed-off-by: Russell King
15 Mar, 2006
3 commits
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Signed-off-by: Russell King
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lapic_shutdown() re-enables interrupts which is un-desirable for panic
case, so use local_irq_save() and local_irq_restore() to keep the irqs
disabled for kexec on panic case, and close a possible race window while
kdump shutdown as shown in this stack trace-- BUG: spinlock lockup on CPU#1, bash/4396, c52781a0
[] _raw_spin_lock+0xb7/0xd2
[] _spin_lock+0x6/0x8
[] scheduler_tick+0xe7/0x328
[] update_process_times+0x51/0x5d
[] smp_apic_timer_interrupt+0x4f/0x58
[] lapic_shutdown+0x76/0x7e
[] apic_timer_interrupt+0x1c/0x30
[] lapic_shutdown+0x76/0x7e
[] machine_crash_shutdown+0x83/0xaa
[] crash_kexec+0xc1/0xe3
[] _spin_lock+0x6/0x8
[] crash_kexec+0xad/0xe3
[] __handle_sysrq+0x84/0xfd
[] write_sysrq_trigger+0x2c/0x35
[] vfs_write+0xa2/0x13b
[] sys_write+0x3b/0x64
[] syscall_call+0x7/0xbSigned-off-by: Maneesh Soni
Signed-off-by: Linus Torvalds -
This reverts commit c33d4568aca9028a22857f94f5e0850012b6444b.
Andrew Clayton and Hugh Dickins report that it's broken for them and
causes strange page table and slab corruption, and spontaneous reboots.Let's get it right next time.
Cc: Andrew Clayton
Cc: Hugh Dickins
Cc: Andi Kleen
Signed-off-by: Linus Torvalds
14 Mar, 2006
1 commit
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The lparcfg code needs several things which are pretty arcane internal
details and which we don't want to export, which means that lparcfg
doesn't work when built as a module. This makes it a bool instead of
a tristate in the Kconfig so that users can't try to build it as a
module.Signed-off-by: Paul Mackerras
13 Mar, 2006
3 commits
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EM64T CPUs have somewhat weird error reporting for non canonical RIPs in
SYSRET.We can't handle any exceptions there because the exception handler would
end up running on the user stack which is unsafe.To avoid problems any code that might end up with a user touched pt_regs
should return using int_ret_from_syscall. int_ret_from_syscall ends up
using IRET, which allows safe exceptions.Cc: Ernie Petrides
Signed-off-by: Andi Kleen
Signed-off-by: Linus Torvalds -
* master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] iwmmxt thread state alignment
[ARM] 3350/1: Enable 1-wire on ARM
[ARM] 3356/1: Workaround for the ARM1136 I-cache invalidation problem
[ARM] 3355/1: NSLU2: remove propmt depends
[ARM] 3354/1: NAS100d: fix power led handling
[ARM] Fix muldi3.S -
This patch removes the reliance of iwmmxt on hand coded alignments.
Since thread_info is always 8K aligned, specifying that fpstate is
8-byte aligned achieves the same effect without needing to resort
to hand coded alignments.Signed-off-by: Russell King
11 Mar, 2006
3 commits
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* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
[IA64] Fix race in the accessed/dirty bit handlers -
Patch from Alessandro Zummo
This patches add the 1-wire drivers
to the ARM Kconfig.Signed-off-by: Alessandro Zummo
Signed-off-by: Russell King -
Patch from Catalin Marinas
ARM1136 erratum 371025 (category 2) specifies that, under rare
conditions, an invalidate I-cache by MVA (line or range) operation can
fail to invalidate a cache line. The recommended workaround is to
either invalidate the entire I-cache or invalidate the range by
set/way rather than MVA.Note that for a 16K cache size, invalidating a 4K page by set/way is
equivalent to invalidating the entire I-cache.Signed-off-by: Catalin Marinas
Signed-off-by: Russell King
10 Mar, 2006
6 commits
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Currently the code tries up to spin_retry times to grab a lock using the cs
instruction. The cs instruction has exclusive access to a memory region
and therefore invalidates the appropiate cache line of all other cpus. If
there is contention on a lock this leads to cache line trashing. This can
be avoided if we first check wether a cs instruction is likely to succeed
before the instruction gets actually executed.Signed-off-by: Christian Ehrhardt
Signed-off-by: Martin Schwidefsky
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
/usr/src/ctest/git/kernel/mm/rmap.c: In function `page_referenced_one':
/usr/src/ctest/git/kernel/mm/rmap.c:354: warning: implicit declaration of function `rwsem_is_locked'Signed-off-by: Adrian Bunk
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
arch/sh/Kconfig shouldn't source non-existing Kconfig files.
Signed-off-by: Adrian Bunk
Cc: Paul Mundt
Cc: Kazumoto Kojima
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix a lockup which was introduced during the conversion to the generic IRQ
framework.Cc: Richard Henderson
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Some people still haven't heared that fp in the kernel is forbidden.
Signed-off-by: Ralf Baechle
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Found by make buildcheck.
Signed-off-by: Ralf Baechle
