The header files for the Pb1200/DBAu1200 boards have wrong definition for the
IDE interface's decoded range length -- it should be 512 bytes according to
what the IDE driver does. In addition, the IDE platform device claims 1 byte
too many for its memory resource -- fix the platform code and the IDE driver
in accordance.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
There's a libata based PATA driver for avr32, but no support for
drivers/ide/ on avr32.
This patch fixes the following compile error:
<-- snip -->
...
CC [M] drivers/ide/ide-cd.o
In file included from /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ide/ide-cd.c:37:
/home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/ide.h:209:21: error: asm/ide.h: No such file or directory
make[3]: *** [drivers/ide/ide-cd.o] Error 1
<-- snip -->
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
http://bugzilla.kernel.org/show_bug.cgi?id=10124
this change:
commit 08f1c192c3
Author: Muli Ben-Yehuda <muli@il.ibm.com>
Date: Sun Jul 22 00:23:39 2007 +0300
x86-64: introduce struct pci_sysdata to facilitate sharing of ->sysdata
This patch introduces struct pci_sysdata to x86 and x86-64, and
converts the existing two users (NUMA, Calgary) to use it.
This lays the groundwork for having other users of sysdata, such as
the PCI domains work.
The Calgary bits are tested, the NUMA bits just look ok.
replaces pcibios_scan_root by pci_scan_bus_parented...
but in pcibios_scan_root we have a check about scanned busses.
Cc: <yakui.zhao@intel.com>
Cc: Stian Jordet <stian@jordet.net>
Cc: Len Brown <lenb@kernel.org>
Cc: Greg KH <greg@kroah.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "Yinghai Lu" <yhlu.kernel@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The signal trampolines were accidently flushing the kernel I$ instead of
the users. Fix that up, and also add a missing user D$ flush while
we're at it.
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This patch fixes the problem that kdump by INIT does not work if we use
makedumpfile. The problem is that after INIT is issued, 2nd kernel
starts and makedumpfile fails with the following error message.
/proc/vmcore doesn't contain vmcoreinfo.
'-x' or '-i' must be specified.
makedumpfile Failed.
The cause of this problem is that kernel does not call
crash_save_vmcoreinfo. When kdump starts by panic or sysrq-trigger,
crash_save_vmcoreinfo is called by crash_kexec. But this function is not
called when kdump starts by INIT. The Attached patch fixes this.
This patch just adds crash_save_vmcoreinfo into machine_kdump_on_init so
that crash_save_vmcoreinfo can be called when kdump starts by INIT.
I tested this patch with linux-2.6.25-rc9 and I confirmed it worked.
Signed-off-by: Takao Indoh <indou.takao@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
arch/sh/kernel/traps_32.c: In function `do_reserved_inst':
arch/sh/kernel/traps_32.c:667: error: implicit declaration of function `do_fpu_inst'
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
commit 54a0151041 broke zImage build on sh arch:
LD vmlinux
SYSMAP System.map
SYSMAP .tmp_System.map
AS arch/sh/boot/compressed/head_32.o
In file included from /k/arch/sh/boot/compressed/head_32.S:11:
/k/include/linux/linkage.h:34: error: syntax error in macro parameter list
Fix it for both sh and sh64.
Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch fixes some compile errors due to missing save_fpu()
prototypes on sh64 caused by
commit 9bbafce2ee
(sh: Fix occasional FPU register corruption under preempt).
Signed-off-by: Adrian Bunk <adrian.bunk@movial.fi>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Correctly determine the address of an illegal instruction. The EPCR0 register
holds this value (masked by EPCR0_PC) if the validity bit is set (masked by
EPCR0_V). So the test as to whether the contents of the register are usable
should be involve checking the _V bit, not the _PC bits.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
There is a NUMA memory configuration issue in 2.6.24:
A 2-node machine of ours has got the following memory layout:
Node 0: 0 - 2 Gbytes
Node 0: 4 - 8 Gbytes
Node 1: 8 - 16 Gbytes
Node 0: 16 - 18 Gbytes
"efi_memmap_init()" merges the three last ranges into one.
"register_active_ranges()" is called as follows:
efi_memmap_walk(register_active_ranges, NULL);
i.e. once for the 4 - 18 Gbytes range. It picks up the node
number from the start address, and registers all the memory for
the node #0.
"register_active_ranges()" should be called as follows to
make sure there is no merged address range at its entry:
efi_memmap_walk(filter_memory, register_active_ranges);
"filter_memory()" is similar to "filter_rsvd_memory()",
but the reserved memory ranges are not filtered out.
Signed-off-by: Zoltan Menyhart <Zoltan.Menyhart@bull.net>
Signed-off-by: Tony Luck <tony.luck@intel.com>
The prevent_tail_call() macro works around the problem of the compiler
clobbering argument words on the stack, which for asmlinkage functions
is the caller's (user's) struct pt_regs. The tail/sibling-call
optimization is not the only way that the compiler can decide to use
stack argument words as scratch space, which we have to prevent.
Other optimizations can do it too.
Until we have new compiler support to make "asmlinkage" binding on the
compiler's own use of the stack argument frame, we have work around all
the manifestations of this issue that crop up.
More cases seem to be prevented by also keeping the incoming argument
variables live at the end of the function. This makes their original
stack slots attractive places to leave those variables, so the compiler
tends not clobber them for something else. It's still no guarantee, but
it handles some observed cases that prevent_tail_call() did not.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This patch also resolves hangs on boot:
http://lkml.org/lkml/2008/2/23/263http://bugzilla.kernel.org/show_bug.cgi?id=10093
The bug was causing once-in-few-reboots 10-15 sec wait during boot on
certain laptops.
Earlier commit 40d6a14662 added
smp_call_function in cpu_idle_wait() to kick cpus that are in tickless
idle. Looking at cpu_idle_wait code at that time, code seemed to be
over-engineered for a case which is rarely used (while changing idle
handler).
Below is a simplified version of cpu_idle_wait, which just makes a dummy
smp_call_function to all cpus, to make them come out of old idle handler
and start using the new idle handler. It eliminates code in the idle
loop to handle cpu_idle_wait.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Make NOMMU-mode work with base addresses other than 0xC0000000 by:
(1) Giving the code that sets up the protection registers the right address
in __sdram_base. Rather than being hard coded to 0xC0000000, the value
of __page_offset is obtained from the linker script.
(2) Eliminate the check in __switch_to() that verifies the current thread
info is in the 0xCxxxxxxx region.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Use traps 120-126 to emulate atomic cmpxchg32, xchg32, and XOR-, OR-, AND-, SUB-
and ADD-to-memory operations for userspace.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1) ptrace should pass 'current' to task_user_regset_view()
2) When fetching general registers using a 64-bit view, and
the target is 32-bit, we have to convert.
3) Skip the whole register window get/set code block if
the user isn't asking to access anything in there.
Otherwise we have problems if the user doesn't have
an address space setup. Fetching ptrace register is
still valid at such a time, and ptrace does not try
to access the register window area of the regset.
Signed-off-by: David S. Miller <davem@davemloft.net>
gcc expects all toplevel assembly to return to the original section type.
The code in alteranative.c does not do this. This caused some strange bugs
in sched-devel where code would end up in the .rodata section and when
the kernel sets the NX bit on all .rodata, the kernel would crash when
executing this code.
This patch adds a .previous marker to return the code back to the
original section.
Credit goes to Andrew Pinski for telling me it wasn't a gcc bug but a
bug in the toplevel asm code in the kernel. ;-)
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Untangle the chaos of page size determination in this function by
simply using PAGE_SIZE << compound_order().
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
The functions time_before, time_before_eq, time_after, and time_after_eq are
more robust for comparing jiffies against other values.
So use the time_after() & time_before() macros, defined at linux/jiffies.h,
which deal with wrapping correctly
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: S.Caglar Onur <caglar@pardus.org.tr>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
show_mem() has no need to print the amount of free swap space manually because
show_free_areas() does this already and is called by the former.
The two outputs only differ in text formatting:
printk("Free swap = %lukB\n", ...);
printk("Free swap: %6ldkB\n", ...);
Signed-off-by: Johannes Weiner <hannes@saeurebad.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
IA64's IOMMU implementation allocates memory areas spanning LLD's segment
boundary limit. It forces low level drivers to have a workaround to adjust
scatter lists that the IOMMU builds.
We are in the process of making all the IOMMUs respect the segment boundary
limits to remove such work around in LLDs. This patch is for IA64's IOMMU.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Add kprobe-booster support on ia64.
Kprobe-booster improves the performance of kprobes by eliminating single-step,
where possible. Currently, kprobe-booster is implemented on x86 and x86-64.
This is an ia64 port.
On ia64, kprobe-booster executes a copied bundle directly, instead of single
stepping. Bundles which have B or X unit and which may cause an exception
(including break) are not executed directly. And also, to prevent hitting
break exceptions on the copied bundle, only the hindmost kprobe is executed
directly if several kprobes share a bundle and are placed in different slots.
Note: set_brl_inst() is used for preparing an instruction buffer(it does not
modify any active code), so it does not need any atomic operation.
Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: bibo,mao <bibo.mao@intel.com>
Cc: Rusty Lynch <rusty.lynch@intel.com>
Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Cc: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
The sys_getpid() and sys_set_tid_address() behavior changed from
return current->tgid
to
struct pid *pid;
pid = current->pids[PIDTYPE_PID].pid;
return pid->numbers[pid->level].nr;
But the fast system calls on ia64 still operate the old way. Patch them
appropriately to let ia64 work with pid namespaces. Besides, this is one more
step in deprecating of pid and tgid on task_struct.
The fsys_getppid() is to be patched as well, but its logic is much
more complex now, so I will make it later.
One thing I'm not 100% sure is the trick with the IA64_UPID_SHIFT. On order
to access the pid->level's element of an array I have to perform the following
calculations
pid + sizeof(struct upid) * pid->level
The problem is that ia64 can only multiply float point registers, while all
the offsets I have in code are in rXX ones. Fortunately, the sizeof(struct
upid) is 32 bytes on ia64 (and is very unlikely to ever change), so the
calculations get simpler:
pid + pid->level << 5
So, I introduce the IA64_UPID_SHIFT and use the shl instruction. I also
looked at how gcc compiles the similar place and found that it makes it with
shift as well. Is this OK to do so?
Tested with ski emulator with 2.6.24 kernel, but fits 2.6.25-rc4 and
2.6.25-rc4-mm1 as well.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Cc: David Mosberger-Tang <davidm@hpl.hp.com>
Cc: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Amy Griffis <amy.griffis@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
do_each_thread/while_each_thread is a double loop, so
should use 'goto' rather than 'break' to break out
the loop.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
One should normally unlock in the reverse order of the lock calls,
and in this case there certainly is no reason not to.
Signed-off-by: Alan D. Brunelle <alan.brunelle@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
While it is convenient that we can invoke kdump by asserting INIT
via button on chassis etc., there are some situations that invoking
kdump on fatal MCA is not welcomed rather than rebooting fast without
dump.
This patch adds a new flag 'kdump_on_fatal_mca' that is independent
from 'kdump_on_init' currently available. Adding this flag enable
us to turning on/off of kdump depend on the event, INIT and/or fatal
MCA. Default for this flag is to take the dump.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This attached patch significantly shrinks boot memory allocation on ia64.
It does this by not allocating per_cpu areas for cpus that can never
exist.
In the case where acpi does not have any numa node description of the
cpus, I defaulted to assigning the first 32 round-robin on the known
nodes.. For the !CONFIG_ACPI I used for_each_possible_cpu().
Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
A simple fix. The existing pernodesize reservation is not taking into
account a second array of pg_data_t structures. This is normally not
important because the PAGE_ALIGN macro reserves adequate space.
I made the compute_pernodesize steps in the same order as the fill_pernode
steps to make the correlation more clear.
Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
flush_cache_vmap / flush_cache_vunmap were calling flush_cache_all which -
having been deprecated - turned into a nop ...
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
In time_cpufreq_notifier() the cpu id to act upon is held in freq->cpu. Use it
instead of smp_processor_id() in the call to set_cyc2ns_scale().
This makes the preempt_*able() unnecessary and lets set_cyc2ns_scale() update
the intended cpu's cyc2ns.
Related mail/thread: http://lkml.org/lkml/2007/12/7/130
Signed-off-by: Karsten Wiese <fzu@wemgehoertderstaat.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
revert:
| commit 47001d6033
| Author: Thomas Gleixner <tglx@linutronix.de>
| Date: Tue Apr 1 19:45:18 2008 +0200
|
| x86: tsc prevent time going backwards
it has been identified to cause suspend regression - and the
commit fixes a longstanding bug that existed before 2.6.25 was
opened - so it can wait some more until the effects are better
understood.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
[SPARC64]: Fix user accesses in regset code.
[SPARC64]: Fix FPU saving in 64-bit signal handling.
We handle a broken tsc these days, so no need to panic. We clear the
TSC bit when tsc_init decides it's unreliable (eg. under lguest w/ bad
host TSC), leading to bogus panic.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Building UP kernel with KGDB enabled produces the following errors and warning
(fatal due to -Werror in arch/mips/kernel/Makefile):
In file included from arch/mips/kernel/gdb-stub.c:142:
include/asm/smp.h:25:1: "raw_smp_processor_id" redefined
In file included from include/linux/sched.h:69,
from arch/mips/kernel/gdb-stub.c:126:
include/linux/smp.h:88:1: this is the location of the previous definition
In file included from arch/mips/kernel/gdb-stub.c:142:
include/asm/smp.h:62: error: redefinition of 'smp_send_reschedule'
include/linux/smp.h:102: error: previous definition of 'smp_send_reschedule' was here
include/asm/smp.h: In function `smp_send_reschedule':
include/asm/smp.h:65: error: dereferencing pointer to incomplete type
arch/mips/kernel/gdb-stub.c: At top level:
arch/mips/kernel/gdb-stub.c:660: warning: 'kgdb_wait' defined but not used
Fix the errors by not directly including <asm/smp.h> (which is already included
by <linux/smp.h>) and the warning by enclosing kgdb_wait() in #ifdef CONFIG_SMP.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Long overdue update of the m68k defconfigs
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The default defconfig should be one from arch/m68k/configs/
arch/m68k/defconfig was not exactly identical to amiga_defconfig but
also considering how long they have been without any update that doesn't
seem to have been on purpose.
Signed-off-by: Adrian Bunk <adrian.bunk@movial.fi>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The patch defines kernel parameter "nptcg=". The parameter overrides max number
of concurrent global TLB purges which is reported from either PAL_VM_SUMMARY or
SAL PALO.
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
According to SDM2.2, Itanium supports multiple outstanding ptc.g instructions.
But current kernel function ia64_global_tlb_purge() uses a spinlock to serialize
ptc.g instructions issued by multiple processors. This serialization might have
scalability issue on a big SMP machine where many processors could purge TLB
in parallel.
The patch fixes this problem by issuing multiple ptc.g instructions in
ia64_global_tlb_purge(). It also adds support for the "PALO" table to get
a platform view of the max number of outstanding ptc.g instructions (which
may be different from the processor view found from PAL_VM_SUMMARY).
PALO specification can be found at: http://www.dig64.org/home/DIG64_PALO_R1_0.pdf
spinaphore implementation by Matthew Wilcox.
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
