05 Dec, 2010
2 commits
-
The generic conversion eliminates the spurious no_ack and no_end
routines, converts all the cascaded handlers to handle_simple_irq() and
makes iosapic use a modified handle_percpu_irq() to become the same as
the CPU irq's. This isn't an essential change, but it eliminates the
mask/unmask overhead of handle_level_irq().Signed-off-by: James Bottomley
Tested-by: Helge Deller
Signed-off-by: Kyle McMartin -
The essential problem we're currently having is that dino (and gsc) is a
cascaded CPU interrupt. Under the old __do_IRQ() handler, our CPU
interrupts basically did an ack followed by an end. In the new scheme,
we replaced them with level handlers which do a mask, an ack and then an
unmask (but no end). Instead, with the renaming of end to eoi, we
actually want to call the percpu flow handlers, because they actually
have all the characteristics we want.This patch does the conversion and gets my C360 booting again.
Signed-off-by: James Bottomley
Signed-off-by: Kyle McMartin
30 Nov, 2010
1 commit
-
Noticed-by: Randy Dunlap
Signed-off-by: Kyle McMartin
18 Nov, 2010
1 commit
-
The big kernel lock has been removed from all these files at some point,
leaving only the #include.Remove this too as a cleanup.
Signed-off-by: Arnd Bergmann
Signed-off-by: Linus Torvalds
29 Oct, 2010
1 commit
-
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6:
parisc: add tty driver to PDC console
drivers/parisc/iosapic.c: Remove unnecessary kzalloc cast
parisc: remove homegrown L1_CACHE_ALIGN macro
arch/parisc: Removing undead ifdef CONFIG_PA20
parisc: unwind - optimise linked-list searches for modules
parisc: change to new flag variable
drivers/char/agp/parisc-agp.c: eliminate memory leak
parisc: kill __do_IRQ
parisc: convert eisa interrupts to flow handlers
parisc: convert gsc and dino pci interrupts to flow handlers
parisc: convert suckyio interrupts to flow handlers
parisc: convert iosapic interrupts to proper flow handlers
parisc: convert cpu interrupts to proper flow handlers
parisc: lay groundwork for killing __do_IRQ
parisc: add prlimit64 syscall
parisc: squelch warning when using dev_get_stats
28 Oct, 2010
2 commits
-
Add missing __user markup on the argument of put_user().
Signed-off-by: Namhyung Kim
Cc: Kyle McMartin
Cc: Helge Deller
Cc: "James E.J. Bottomley"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix up the arguments to arch_ptrace() to take account of the fact that
@addr and @data are now unsigned long rather than long as of a preceding
patch in this series.Signed-off-by: Namhyung Kim
Cc:
Acked-by: Roland McGrath
Acked-by: David Howells
Acked-by: Geert Uytterhoeven
Acked-by: David S. Miller
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
23 Oct, 2010
1 commit
-
* 'config' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl:
BKL: introduce CONFIG_BKL.
dabusb: remove the BKL
sunrpc: remove the big kernel lock
init/main.c: remove BKL notations
blktrace: remove the big kernel lock
rtmutex-tester: make it build without BKL
dvb-core: kill the big kernel lock
dvb/bt8xx: kill the big kernel lock
tlclk: remove big kernel lock
fix rawctl compat ioctls breakage on amd64 and itanic
uml: kill big kernel lock
parisc: remove big kernel lock
cris: autoconvert trivial BKL users
alpha: kill big kernel lock
isapnp: BKL removal
s390/block: kill the big kernel lock
hpet: kill BKL, add compat_ioctl
22 Oct, 2010
3 commits
-
This patch adds a tty driver to the PDC console. It allows the use
of ports not supported by linux as a console (e.g. serial port on
C8000.) The tty driver will not register the ttyB device if PDC console
driver has been unregistered. This happens when the early printk
console is disabled as it has not been selected as the primary console.Signed-off-by: Guy Martin
Signed-off-by: Kyle McMartin -
The CONFIG_PA20 ifdef isn't necessary at this point, because it is
checked in an outer ifdef level already and has no effect here.Signed-off-by: Christian Dietrich
Signed-off-by: Kyle McMartin -
Having many dozens of modules, the searches down the linked
list of sections would dominate the lookup time, dwarfing
any savings from the binary search within the section.A simple move-to-front optimisation exploits the commonality
of the code paths taken, and in simple real-world tests
on other architectures reduced the number of steps in the
search to barely more than 1.Signed-off-by: Phil Carmody
Signed-off-by: Kyle McMartin
17 Oct, 2010
1 commit
-
The parisc version of the perf code is sufficiently
protected by its own spinlock, no need to use the BKL.Signed-off-by: Arnd Bergmann
Cc: Kyle McMartin
Cc: Helge Deller
Cc: "James E.J. Bottomley"
Cc: linux-parisc@vger.kernel.org
14 Oct, 2010
5 commits
-
Signed-off-by: Kyle McMartin
-
Shift the ->end call (cpu eoi) from __do_IRQ into our
unmask handler. Also nuke some redundant code.Signed-off-by: Kyle McMartin
-
Only major change is renaming functions to match the conventions
expected by the generic irq code.Signed-off-by: Kyle McMartin
-
Use proper accessors and handlers for generic irq cleanups. We just
call back into __do_IRQ through desc->handler now, and remove the
explicit calls.Signed-off-by: Kyle McMartin
-
Signed-off-by: Kyle McMartin
06 Oct, 2010
1 commit
-
With all the recent module loading cleanups, we've minimized the code
that sits under module_mutex, fixing various deadlocks and making it
possible to do most of the module loading in parallel.However, that whole conversion totally missed the rather obscure code
that adds a new module to the list for BUG() handling. That code was
doubly obscure because (a) the code itself lives in lib/bugs.c (for
dubious reasons) and (b) it gets called from the architecture-specific
"module_finalize()" rather than from generic code.Calling it from arch-specific code makes no sense what-so-ever to begin
with, and is now actively wrong since that code isn't protected by the
module loading lock any more.So this commit moves the "module_bug_{finalize,cleanup}()" calls away
from the arch-specific code, and into the generic code - and in the
process protects it with the module_mutex so that the list operations
are now safe.Future fixups:
- move the module list handling code into kernel/module.c where it
belongs.
- get rid of 'module_bug_list' and just use the regular list of modules
(called 'modules' - imagine that) that we already create and maintain
for other reasons.Reported-and-tested-by: Thomas Gleixner
Cc: Rusty Russell
Cc: Adrian Bunk
Cc: Andrew Morton
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds
18 Aug, 2010
1 commit
-
Make do_execve() take a const filename pointer so that kernel_execve() compiles
correctly on ARM:arch/arm/kernel/sys_arm.c:88: warning: passing argument 1 of 'do_execve' discards qualifiers from pointer target type
This also requires the argv and envp arguments to be consted twice, once for
the pointer array and once for the strings the array points to. This is
because do_execve() passes a pointer to the filename (now const) to
copy_strings_kernel(). A simpler alternative would be to cast the filename
pointer in do_execve() when it's passed to copy_strings_kernel().do_execve() may not change any of the strings it is passed as part of the argv
or envp lists as they are some of them in .rodata, so marking these strings as
const should be fine.Further kernel_execve() and sys_execve() need to be changed to match.
This has been test built on x86_64, frv, arm and mips.
Signed-off-by: David Howells
Tested-by: Ralf Baechle
Acked-by: Russell King
Signed-off-by: Linus Torvalds
07 Aug, 2010
1 commit
-
…/git/tip/linux-2.6-tip
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (27 commits)
sched: Use correct macro to display sched_child_runs_first in /proc/sched_debug
sched: No need for bootmem special cases
sched: Revert nohz_ratelimit() for now
sched: Reduce update_group_power() calls
sched: Update rq->clock for nohz balanced cpus
sched: Fix spelling of sibling
sched, cpuset: Drop __cpuexit from cpu hotplug callbacks
sched: Fix the racy usage of thread_group_cputimer() in fastpath_timer_check()
sched: run_posix_cpu_timers: Don't check ->exit_state, use lock_task_sighand()
sched: thread_group_cputime: Simplify, document the "alive" check
sched: Remove the obsolete exit_state/signal hacks
sched: task_tick_rt: Remove the obsolete ->signal != NULL check
sched: __sched_setscheduler: Read the RLIMIT_RTPRIO value lockless
sched: Fix comments to make them DocBook happy
sched: Fix fix_small_capacity
powerpc: Exclude arch_sd_sibiling_asym_packing() on UP
powerpc: Enable asymmetric SMT scheduling on POWER7
sched: Add asymmetric group packing option for sibling domain
sched: Fix capacity calculations for SMT4
sched: Change nohz idle load balancing logic to push model
...
05 Aug, 2010
1 commit
-
The firmware handles '\t' internally, so stop trying to emulate it
(which, incidentally, had a bug in it.)Fixes a really weird hang at bootup in rcu_bootup_announce, which,
as far as I can tell, is the first printk in the core kernel to use
a tab as the first character.Cc: stable@kernel.org
Signed-off-by: Kyle McMartin
Signed-off-by: Linus Torvalds
09 Jun, 2010
1 commit
-
For people who otherwise get to write: cpu_clock(smp_processor_id()),
there is now: local_clock().Also, as per suggestion from Andrew, provide some documentation on
the various clock interfaces, and minimize the unsigned long long vs
u64 mess.Signed-off-by: Peter Zijlstra
Cc: Andrew Morton
Cc: Linus Torvalds
Cc: Jens Axboe
LKML-Reference:
Signed-off-by: Ingo Molnar
01 Jun, 2010
1 commit
-
* 'for-35' of git://repo.or.cz/linux-kbuild: (81 commits)
kbuild: Revert part of e8d400a to resolve a conflict
kbuild: Fix checking of scm-identifier variable
gconfig: add support to show hidden options that have prompts
menuconfig: add support to show hidden options which have prompts
gconfig: remove show_debug option
gconfig: remove dbg_print_ptype() and dbg_print_stype()
kconfig: fix zconfdump()
kconfig: some small fixes
add random binaries to .gitignore
kbuild: Include gen_initramfs_list.sh and the file list in the .d file
kconfig: recalc symbol value before showing search results
.gitignore: ignore *.lzo files
headerdep: perlcritic warning
scripts/Makefile.lib: Align the output of LZO
kbuild: Generate modules.builtin in make modules_install
Revert "kbuild: specify absolute paths for cscope"
kbuild: Do not unnecessarily regenerate modules.builtin
headers_install: use local file handles
headers_check: fix perl warnings
export_report: fix perl warnings
...
30 May, 2010
5 commits
-
The EXTR, DEP and DEPI macros are unnecessary. There are PA 1.X
pneumonics available with the same functionality, and the DEP and DEPI
macros conflict with assembler pneumonics.Tested on a variety of 32 and 64-bit systems.
Signed-off-by: John David Anglin
Signed-off-by: Kyle McMartin -
1) Gate immediately and save a branch.
2) Fix off by one error in checking entry number.
3) Use sr7 instead of sr3 in error return path as sr3 might not
contain correct value.
4) Enable locking on UP systems to prevent incorrect operation of
the cas_action critical region on page faults.Tested on several systems, including UP c3750 with 2.6.33.2 kernel.
Signed-off-by: John David Anglin
Signed-off-by: Kyle McMartin -
Signed-off-by: John David Anglin
Signed-off-by: Kyle McMartin -
Signed-off-by: John David Anglin
Signed-off-by: Kyle McMartin -
Any assembly constant generated with the use of
align_frame includes size for a full stack frame.Signed-off-by: Carlos O'Donell
Signed-off-by: Kyle McMartin
30 Mar, 2010
1 commit
-
…it slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
13 Mar, 2010
1 commit
-
On an architecture that supports 32-bit compat we need to override the
reported machine in uname with the 32-bit value. Instead of doing this
separately in every architecture introduce a COMPAT_UTS_MACHINE define in
and apply it directly in sys_newuname().Signed-off-by: Christoph Hellwig
Cc: Ralf Baechle
Cc: Benjamin Herrenschmidt
Cc: Paul Mundt
Cc: Jeff Dike
Cc: Hirokazu Takata
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: H. Peter Anvin
Cc: Al Viro
Cc: Arnd Bergmann
Cc: Heiko Carstens
Cc: Martin Schwidefsky
Cc: "Luck, Tony"
Cc: James Morris
Cc: Andreas Schwab
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
07 Mar, 2010
5 commits
-
Replace open-coded rate limiting logic with __ratelimit().
Signed-off-by: Akinobu Mita
Signed-off-by: Kyle McMartin -
This patch converts the parisc architecture to use the generic
read_persistent_clock and update_persistent_clock interfaces, reducing
the amount of arch specific code we have to maintain, and allowing for
further cleanups in the future.I have not built or tested this patch, so help from arch maintainers
would be appreciated.Signed-off-by: John Stultz
Acked-by: Helge Deller
Signed-off-by: Kyle McMartin -
Signed-off-by: Frans Pop
Cc: linux-parisc@vger.kernel.org
Cc: Kyle McMartin
Cc: Helge Deller
Signed-off-by: Kyle McMartin -
tested with test_accept4.c from de11defebf00007677fb7ee91d9b089b78786fbb
Signed-off-by: Kyle McMartin
-
Signed-off-by: Helge Deller
Signed-off-by: Kyle McMartin
03 Mar, 2010
3 commits
-
Signed-off-by: Denys Vlasenko
Signed-off-by: Michal Marek -
Signed-off-by: Denys Vlasenko
Signed-off-by: Michal Marek -
Signed-off-by: Denys Vlasenko
Signed-off-by: Michal Marek
02 Mar, 2010
1 commit
-
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (100 commits)
ARM: Eliminate decompressor -Dstatic= PIC hack
ARM: 5958/1: ARM: U300: fix inverted clk round rate
ARM: 5956/1: misplaced parentheses
ARM: 5955/1: ep93xx: move timer defines into core.c and document
ARM: 5954/1: ep93xx: move gpio interrupt support to gpio.c
ARM: 5953/1: ep93xx: fix broken build of clock.c
ARM: 5952/1: ARM: MM: Add ARM_L1_CACHE_SHIFT_6 for handle inside each ARCH Kconfig
ARM: 5949/1: NUC900 add gpio virtual memory map
ARM: 5948/1: Enable timer0 to time4 clock support for nuc910
ARM: 5940/2: ARM: MMCI: remove custom DBG macro and printk
ARM: make_coherent(): fix problems with highpte, part 2
MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself
ARM: 5945/1: ep93xx: include correct irq.h in core.c
ARM: 5933/1: amba-pl011: support hardware flow control
ARM: 5930/1: Add PKMAP area description to memory.txt.
ARM: 5929/1: Add checks to detect overlap of memory regions.
ARM: 5928/1: Change type of VMALLOC_END to unsigned long.
ARM: 5927/1: Make delimiters of DMA area globally visibly.
ARM: 5926/1: Add "Virtual kernel memory..." printout.
ARM: 5920/1: OMAP4: Enable L2 Cache
...Fix up trivial conflict in arch/arm/mach-mx25/clock.c
27 Feb, 2010
1 commit
-
* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (48 commits)
x86/PCI: Prevent mmconfig memory corruption
ACPI: Use GPE reference counting to support shared GPEs
x86/PCI: use host bridge _CRS info by default on 2008 and newer machines
PCI: augment bus resource table with a list
PCI: add pci_bus_for_each_resource(), remove direct bus->resource[] refs
PCI: read bridge windows before filling in subtractive decode resources
PCI: split up pci_read_bridge_bases()
PCIe PME: use pci_pcie_cap()
PCI PM: Run-time callbacks for PCI bus type
PCIe PME: use pci_is_pcie()
PCI / ACPI / PM: Platform support for PCI PME wake-up
ACPI / ACPICA: Multiple system notify handlers per device
ACPI / PM: Add more run-time wake-up fields
ACPI: Use GPE reference counting to support shared GPEs
PCI PM: Make it possible to force using INTx for PCIe PME signaling
PCI PM: PCIe PME root port service driver
PCI PM: Add function for checking PME status of devices
PCI: mark is_pcie obsolete
PCI: set PCI_PREF_RANGE_TYPE_64 in pci_bridge_check_ranges
PCI: pciehp: second try to get big range for pcie devices
...