This is complicated a little because compat_audit.c wants to see only
the 32bit syscall numbers, but is being built in a 64bit compile.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
We use clock cycle counter, adjusted to HZ.
This can be extended to sun4v based processors as well, as they
also have a proper overflow interrupt facility for the performance
counters.
Signed-off-by: David S. Miller <davem@davemloft.net>
It writes the %pic register, keeping mind of processor bugs.
Implement reset_pic() in terms of it.
Signed-off-by: David S. Miller <davem@davemloft.net>
In these instructions we load the new thread register, switch
the register window, and setup the new frame pointer.
All of these must appear atomic, and things will explode if
we take a PIL=15 NMI interrupt in the middle of this sequence.
Signed-off-by: David S. Miller <davem@davemloft.net>
We don't want the rtrap path to try and run softirqs or
anything like that when returning from a PIL==15 NMI.
Signed-off-by: David S. Miller <davem@davemloft.net>
So that we can profile code even in a local_irq_disable() section,
only write 14 (instead of 15) into the %pil register to disable IRQs.
This allows PIL level 15 to serve as a pseudo NMI.
Signed-off-by: David S. Miller <davem@davemloft.net>
Stephen Rothwell pointed out that pcmcia can't be enabled on sparc64.
There is an empty non-prompt PCMCIA explicit entry in
arch/sparc/Kconfig but that doesn't do anything.
32-bit sparc needs a small hack to make this work, since it doesn't
use the generic IRQ layer yes. We have to provide a dummy definition
of probe_irq_mask(), since this is used by the yenta socket driver.
Signed-off-by: David S. Miller <davem@davemloft.net>
Add a sysctl to tweak the RSS limit used to decide when to grow
the TSB for an address space.
In order to avoid expensive divides and multiplies only simply
positive and negative powers of two are supported.
The function computed takes the number of TSB translations that will
fit at one time in the TSB of a given size, and either adds or
subtracts a percentage of entries. This final value is the
RSS limit.
See tsb_size_to_rss_limit().
Signed-off-by: David S. Miller <davem@davemloft.net>
- move all sparc64/mm/ files to arch/sparc/mm/
- commonly named files are named _64.c
- add files to sparc/mm/Makefile preserving link order
- delete now unused sparc64/mm/Makefile
- sparc64 now finds mm/ in sparc
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
- rename files where sparc64 has similar files to _32.c
- Restructure Makefile
- Sneak in -Werror as we have for sparc64
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
A simple:
diff arch/sparc64/oprofile/init.c arch/sparc/oprofile/init.c
diff arch/sparc64/oprofile/Makefile arch/sparc/oprofile/Makefile
revealed that the directories were equal.
So let sparc64 point to the sparc version and drop the sparc64 oprofile dir
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Move relavent files to sparc/math-emu and
adjust path/include accordingly.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
- Drop unused assignment from Makefile
- Replace EXTRA_CFLAGS with ccflags-y
- Delete unused file
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Merge all of sparc64 Kconfig to sparc Kconfig.
The merge was checked by:
- visual inspection in menuconfig
- result of allnoconfig, allmodconfig, allyesconfig was checked before and after
- result of a number of randconfig was checked before and after
scripts/diffconfig was used to check if the config differed before and after
The validity of the test was checked by on purpose introducing
a few bugs - and they were all caught by first run.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
To align with sparc64 add a "Bus options" menu
This has the additiona advantage that all
bus options are kept together
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
We already has the proper definition in place in param.h.
So use the common Kconfig.hz file
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
We have it in drivers/char/Kconfig
There is no need to ask twice
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
moved a few config entries inside a menu so we
do not clutter the first screen up with a lot of detailed
config options.
The structure now remotely resemble the structure for i386
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mode declaration of SPARC up in the top
to match the structure of sparc64 Kconfig
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The kernel always executes in the TSO memory model now,
so none of this stuff is necessary any more.
With helpful feedback from Nick Piggin.
Signed-off-by: David S. Miller <davem@davemloft.net>
The fact of the matter is, all UltraSPARC-III and later chips only
implement TSO. They don't implement PSO and RMO memory models at all.
Only the Ultra-I and Ultra-II family chips implement RMO and they are
only helped marginally by using this setting when executing kernel
code.
The big plus to doing this is that we can eliminate all of the non-Sync
memory barriers in the kernel except for the ones used in the optimized
memcpy/memset code (these use block load and store operations which
have their own memory ordering rules).
Signed-off-by: David S. Miller <davem@davemloft.net>
Use common functions instead of inlining and duplicating logic
over and over to handle the SBUS vs. EBUS cases.
Before:
text data bss dec hex filename
715 568 16 1299 513 arch/sparc64/kernel/auxio.o
After:
text data bss dec hex filename
631 568 16 1215 4bf arch/sparc64/kernel/auxio.o
Signed-off-by: David S. Miller <davem@davemloft.net>
Copy the FPU state to the task's thread_info->fpregs for the VIS emulation
functions to access.
Signed-off-by: Hong H. Pham <hong.pham@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch fixes the following section mismatch:
WARNING: fs/ubifs/ubifs.o(.init.text+0xec): Section mismatch in reference from the function init_module() to the function .exit.text:ubifs_compressors_exit()
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Impact: fix boot crash with numcpus=0 on certain systems
Fix early exception in __get_smp_config with nosmp.
Bail out early when there is no MP table.
Reported-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Tested-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This adds support for ISA memory holes on the PCI, PCI-X and
PCI-E busses of the 4xx platforms. The patch includes changes
to the Bamboo and Canyonlands device-trees to add such a hole,
others can be updated separately.
The ISA memory hole is an additional outbound window configured
in the bridge to generate PCI cycles in the low memory addresses,
thus allowing to access things such as the hard-decoded VGA
aperture at 0xa0000..0xbffff or other similar things. It's made
accessible to userspace via the new legacy_mem file in sysfs for
which support was added by a previous patch.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
This removes CONFIG_PCI_LEGACY (which is not needed) and consequently
several compiler warnings.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
KVM host support was recently enabled in ppc44x_defconfig, but since then the
config option was renamed. Update ppc44x_defconfig to match.
Also, KVM guests aren't very interesting without networking, so enable
CONFIG_TUN and CONFIG_BRIDGE.
Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Impact: fix hrtimer locking (reported by lockdep) in the CPU hotplug case
This addition fixes the hotplug locking issue on my machine
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Impact: pack struct thread_info more tightly
Change x86_64's thread_info 'flags' field back to __u32.
This was changed to 'unsigned long' when the thread_info*.h
for i386 and x86_64 were merged. Change it back. We can
do this as only 27 bits of 'flags' are actually used.
This change actually packs down thread_info by 64 bits:
32 bits are saved by the smaller flags, and 32 bits are
saved by the following 'mm_segment_t field' becoming
naturally 64-bit aligned.
Signed-off-by: Joe Korty <joe.korty@ccur.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
final close of ->bdev should match the initial open, i.e.
get FMODE_READ | FMODE_NDELAY; FMODE_READ|FMODE_WRITE has
been a braino.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Make sure all FMODE_ constants are documents, and ensure a coherent
style for the already existing comments.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Update FMODE_NDELAY before each ioctl call so that we can kill the
magic FMODE_NDELAY_NOW. It would be even better to do this directly
in setfl(), but for that we'd need to have FMODE_NDELAY for all files,
not just block special files.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
The way the bd_claim for the FMODE_EXCL case is implemented is rather
confusing. Clean it up to the most logical style.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Commit 33c2dca495 (trim file propagation
in block/compat_ioctl.c) removed the handling of some ioctls from
compat_blkdev_driver_ioctl. That caused them to be rejected as unknown
by the compat layer.
Signed-off-by: Andreas Schwab <schwab@suse.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
