m8xx_setup.c says:
/* Force all 8xx processors to use divide by 16 processor clock. */
And at the same time it is using bus-frequency for calculating
timebase. It is okay for most setups because bus-frequency is
equal to clock-frequency.
The problem emerges when cpu frequency is > 66MHz, quoting
u-boot/cpu/mpc8xx/speed.c:
if (gd->cpu_clk <= 66000000) {
sccr_reg |= SCCR_EBDF00; /* bus division factor = 1 */
gd->bus_clk = gd->cpu_clk;
} else {
sccr_reg |= SCCR_EBDF01; /* bus division factor = 2 */
gd->bus_clk = gd->cpu_clk / 2;
}
So in case of cpu clock > 66MHz, bus_clk = cpu_clk / 2. An then, from
Linux, we calculate timebase frequency as tb_freq = bus_clk / 16,
that is cpu_clk / 2 / 16, which is wrong.
This fixes the system time drifting problem on the EP885C board
running at 133MHz.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
I was running sparse on something else and noticed sparse warnings
and especially the bogus code that is fixed by the first hunk of
this patch, so I fixed them all while at it.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Milton Miller <miltonm@bga.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Robert P.J. Day proposed to use the macro FIELD_SIZEOF in replace of code
that matches its definition.
The modification was made using the following semantic patch
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@haskernel@
@@
#include <linux/kernel.h>
@depends on haskernel@
type t;
identifier f;
@@
- (sizeof(((t*)0)->f))
+ FIELD_SIZEOF(t, f)
@depends on haskernel@
type t;
identifier f;
@@
- sizeof(((t*)0)->f)
+ FIELD_SIZEOF(t, f)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This code isn't referenced anywhere, so remove it.
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
For memory remove, we need to clean up htab mappings for the
section of the memory we are removing.
This implements support for removing htab bolted mappings for pSeries
logical partitions. Other sub-archs may need to implement similar
functionality for hotplug memory remove to work on them.
Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This header is needed on other architectures as well (namely h8300),
which currently fails to build without this in place. Rather than
duplicating the port definition completely there, just move this to a
common location instead.
This should get h8300 working again for 2.6.25, in addition to the
changes already pushed by Sato-san in -rc2.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Commit e036eaa681 broke dreamcast pci, this
patch fixes that by reverting the dreamcast specific bits.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: Adrian McMenamin <adrian@mcmen.demon.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Fix the RTC resources setup for sh770x. Whit these proper
start values RTC driver (drivers/rtc/rtc-sh.c) works.
Signed-off-by: Rafael Ignacio Zurita <rizurita@yahoo.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
The C99 specification states in section 6.11.5:
The placement of a storage-class specifier other than at the
beginning of the declaration specifiers in a declaration is an
obsolescent feature.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Avoids sparse warnings:
kernel/sched.c:2170:17: warning: symbol 'schedule_tail' was not declared. Should it be static?
Avoids the need for an external declaration in arch/um/process.c
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Without this, it's possible to have CONFIG_SUPERH32=y set on SH5-103
parts, which leads to much build badness.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
drivers/char/pcmcia/synclink_cs.c:284:1: warning: "CCR3" redefined
In file included from include/asm/cache.h:13,
from include/asm/processor_32.h:15,
from include/asm/processor.h:60,
from include/linux/prefetch.h:14,
from include/linux/list.h:8,
from include/linux/module.h:9,
from drivers/char/pcmcia/synclink_cs.c:38:
include/asm/cpu/cache.h:38:1: warning: this is the location of the previous definition
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Fix following warnings:
WARNING: vmlinux.o(.text+0x4f980): Section mismatch in reference from the function kernel_map_range() to the function .init.text:__alloc_bootmem()
WARNING: vmlinux.o(.text+0x4f9cc): Section mismatch in reference from the function kernel_map_range() to the function .init.text:__alloc_bootmem()
alloc_bootmem() is only used during early init and for any subsequent
call to kernel_map_range() the program logic avoid the call.
So annotate kernel_map_range() with __ref to tell modpost to
ignore the reference to a __init function.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warnings:
WARNING: vmlinux.o(.text+0x4b258): Section mismatch in reference from the function dr_cpu_data() to the function .devinit.text:mdesc_fill_in_cpu_data()
WARNING: vmlinux.o(.text+0x4b290): Section mismatch in reference from the function dr_cpu_data() to the function .cpuinit.text:cpu_up()
mdesc_fill_in_cpu_data() is only used during early init and for
cpu hotplug so the __cpuinit annotation is the correct choice.
We have the call chain:
dr_cpu_data() => dr_cpu_configure() => mdesc_fill_in_cpu_data()
dr_cpu_data() is used only during early init and for cpu
hotplug. So annotating them all __cpuinit solves the
section mismatch and should be correct.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
CC [M] arch/sparc/kernel/led.o
arch/sparc/kernel/led.c: In function 'led_blink':
arch/sparc/kernel/led.c:35: error: invalid use of undefined type 'struct
timer_list'
arch/sparc/kernel/led.c:35: error: 'jiffies' undeclared (first use in
this function)
arch/sparc/kernel/led.c:35: error: (Each undeclared identifier is
reported only once
arch/sparc/kernel/led.c:35: error: for each function it appears in.)
arch/sparc/kernel/led.c:36: error: 'avenrun' undeclared (first use in
this function)
arch/sparc/kernel/led.c:36: error: 'FSHIFT' undeclared (first use in
this function)
arch/sparc/kernel/led.c:36: error: 'HZ' undeclared (first use in this
function)
arch/sparc/kernel/led.c:37: error: invalid use of undefined type 'struct
timer_list'
arch/sparc/kernel/led.c:39: error: invalid use of undefined type 'struct
timer_list'
arch/sparc/kernel/led.c:40: error: invalid use of undefined type 'struct
timer_list'
arch/sparc/kernel/led.c:42: error: implicit declaration of function
'add_timer'
arch/sparc/kernel/led.c: In function 'led_write_proc':
arch/sparc/kernel/led.c:70: error: implicit declaration of function
'copy_from_user'
arch/sparc/kernel/led.c:84: error: implicit declaration of function
'del_timer_sync'
arch/sparc/kernel/led.c: In function 'led_init':
arch/sparc/kernel/led.c:109: error: implicit declaration of function
'init_timer'
arch/sparc/kernel/led.c:110: error: invalid use of undefined type
'struct timer_list'
make[1]: *** [arch/sparc/kernel/led.o] Error 1
Based upon original patch by Robert Reif.
Signed-off-by: David S. Miller <davem@davemloft.net>
Each call to i2c_get_adapter() must be followed by a call to
i2c_put_adapter() to release the grabbed reference. Otherwise the
reference count grows forever and the adapter can never be
unregistered.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Vladimir Ananiev <vovan888@gmail.com>
Acked-by: Tony Lindgren <tony@atomide.com>
mpc52xx_set_psc_clkdiv is needed by PSC device drivers.
Signed-off-by: Eric Dujardin <eric.dujardin@sagem.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Commit ee3d9bd4de ("uml: simplify SIGSEGV
handling"), while greatly simplifying the kernel SIGSEGV handler that
runs in the process address space, introduced a bug which corrupts FP
state in the process.
Previously, the SIGSEGV handler called the sigreturn system call by hand - it
couldn't return through the restorer provided to it because that could try to
call the libc restorer which likely wouldn't exist in the process address
space. So, it blocked off some signals, including SIGUSR1, on entry to the
SIGSEGV handler, queued a SIGUSR1 to itself, and invoked sigreturn. The
SIGUSR1 was delivered, and was visible to the UML kernel after sigreturn
finished.
The commit eliminated the signal masking and the call to sigreturn. The
handler simply hits itself with a SIGTRAP to let the UML kernel know that it
is finished. UML then restores the process registers, which effectively
longjmps the process out of the signal handler, skipping sigreturn's restoring
of register state and the signal mask.
The bug is that the host apparently sets used_fp to 0 when it saves the
process FP state in the sigcontext on the process signal stack. Thus, when
the process is longjmped out of the handler, its FP state is corrupt because
it wasn't saved on the context switch to the UML kernel.
This manifested itself as sleep hanging. For some reason, sleep uses floating
point in order to calculate the sleep interval. When a page fault corrupts
its FP state, it is faked into essentially sleeping forever.
This patch saves the FP state before entering the SIGSEGV handler and restores
it afterwards.
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>
In commit 1aa351a308 ("uml: tidy helper
code") the arguments of helper_wait() were changed. The adaptation of
harddog_user.c was forgotten, so this errors occur:
/arch/um/drivers/harddog_user.c: In function 'start_watchdog':
/arch/um/drivers/harddog_user.c:82: error: too many arguments to function 'helper_wait'
/arch/um/drivers/harddog_user.c:89: error: too many arguments to function 'helper_wait'
Signed-off-by: Johann Felix Soden <johfel@users.sourceforge.net>
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>
The macros which extract registers from a struct sigcontext are no longer
needed and can be removed. They are starting not to build anyway, given the
removal of the 'e' and 'r' from register names during the x86 merge.
Cc: Jiri Olsa <olsajiri@gmail.com>
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>
Define HZ as a config option.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fix a shadowed variable in arch/um/kernel/mem.c, since there is a global
variable has the same name.
Cc: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Update defconfig.
Cc: Christoph Hellwig <hch@lst.de>
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>
If the initrd file has zero-length, the error message should contain
the filepath.
Cc: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Johann Felix Soden <johfel@users.sourceforge.net>
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>
It's always been broken, but recent fixes actually made it do something,
and now the brokenness shows up as the resulting kernel simply not
working at all.
So it used to be that you could enable this config option, and it just
didn't do anything. Now we'd better stop people from enabling it by
mistake, since it _does_ do something, but does it so badly as to be
unusable.
Code to actually make it work is pending, but incomplete and won't be
merged into 2.6.25 in any case.
Acked-by: Arjan van de Ven <arjan@infradead.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: James Morris <jmorris@namei.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Simple typo fix for regression introduced by the user_regset changes.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/pci-2.6:
PCI: Fix wrong reference counter check for proc_dir_entry
PCI: fix up setup-bus.c #ifdef
PCI: don't load acpi_php when acpi is disabled
PCI: quirks: set 'En' bit of MSI Mapping for devices onHT-based nvidia platform
PCI: kernel-doc: fix pci-acpi warning
PCI: irq: patch for Intel ICH10 DeviceID's
PCI: pci_ids: patch for Intel ICH10 DeviceID's
PCI: AMD SATA IDE mode quirk
PCI: drivers/pcmcia/i82092.c: fix up after pci_bus_region changes
PCI: hotplug: acpiphp_ibm: Remove get device information
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] 4835/1: Fix stale comment in struct machine_desc description
[ARM] 4829/1: add .get method to pxa-cpufreq to silence a warning
[ARM] 4828/1: fix 3 warnings in drivers/video/pxafb.c
[ARM] 4827/1: fix two warnings in drivers/i2c/busses/i2c-pxa.c
[ARM] 4826/1: Orion: Register the RTC interrupt on the TS-209
[ARM] pxa: fix clock lookup to find specific device clocks
Remove warning:
arch/powerpc/sysdev/mpic_pasemi_msi.c: In function 'pasemi_msi_setup_msi_irqs':
arch/powerpc/sysdev/mpic_pasemi_msi.c:135: warning: 'addr' is used uninitialized in this function
Turns out addr wasn't even used, it's a leftover from the u3msi code.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Setup i2c_board_info based on device tree contents. This has to be
a device_initcall since we need PCI to be probed by the time we
run it, but before the actual driver is initialized.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Make hibernation work with CONFIG_DEBUG_PAGEALLOC set on x86, by
checking if the pages to be copied are marked as present in the
kernel mapping and temporarily marking them as present if that's not
the case. No functional modifications are introduced if
CONFIG_DEBUG_PAGEALLOC is unset.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
Change the FRV timerfd syscalls to be the same as i386 timerfd syscalls.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
There is no .data.idt section for FRV, so drop it from the linker script.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This patch implements VIRT_CPU_ACCOUNTING for ia64,
which enable us to use more accurate cpu time accounting.
The VIRT_CPU_ACCOUNTING is an item of kernel config, which s390
and powerpc arch have. By turning this config on, these archs
change the mechanism of cpu time accounting from tick-sampling
based one to state-transition based one.
The state-transition based accounting is done by checking time
(cycle counter in processor) at every state-transition point,
such as entrance/exit of kernel, interrupt, softirq etc.
The difference between point to point is the actual time consumed
during in the state. There is no doubt about that this value is
more accurate than that of tick-sampling based accounting.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
arch/sparc64/kernel/process.c:504:17: warning: symbol 'sparc_do_fork' was not declared. Should it be static?
arch/sparc64/kernel/process.c:655:5: warning: symbol 'dump_fpu' was not declared. Should it be static?
arch/sparc64/kernel/process.c:708:16: warning: symbol 'sparc_execve' was not declared. Should it be static?
Signed-off-by: David S. Miller <davem@davemloft.net>
arch/sparc64/kernel/process.c:219:6: warning: symbol '__show_regs' was not declared. Should it be static?
Signed-off-by: David S. Miller <davem@davemloft.net>
