15 Apr, 2010
2 commits
-
This implements support for hardware-managed IRQ balancing as implemented
by SH-X3 cores (presently only hooked up for SH7786, but can probably be
carried over to other SH-X3 cores, too).CPUs need to specify their distribution register along with the mask
definitions, as these follow the same format. Peripheral IRQs that don't
opt out of balancing will be automatically distributed at the whim of the
hardware block, while each CPU needs to verify whether it is handling the
IRQ or not, especially before clearing the mask.Signed-off-by: Paul Mundt
-
Make sure that the timer IRQs and IPIs aren't enabled for IRQ balancing.
IPIs are disabled as a result of being percpu while the timers simply
disable balancing outright.Signed-off-by: Paul Mundt
13 Apr, 2010
4 commits
-
This adds support for hardware-assisted userspace irq masking for
special priority levels. Due to the SR.IMASK interactivity, only some
platforms implement this in hardware (including but not limited to
SH-4A interrupt controllers, and ARM-based SH-Mobile CPUs). Each CPU
needs to wire this up on its own, for now only SH7786 is wired up as an
example.Signed-off-by: Paul Mundt
-
The printk loglevels are all over the place, make them a bit more
coherent, and add some registration notification while we're at it.Signed-off-by: Paul Mundt
-
Presently the sysdevs are simply numbered based on the list position,
without having any direct way of figuring out which controller these are
actually mapping to. This provides a name attr for mapping out the chip
name.Signed-off-by: Paul Mundt
-
Hook up DMAC0 on SH7786.
Signed-off-by: Paul Mundt
07 Apr, 2010
1 commit
-
Presently address translation is default-enabled regardless of whether
CONFIG_MMU is set or not in the SH-4 case, this fixes it up, and also
makes the control init word a bit more readable in the process.Signed-off-by: Paul Mundt
05 Apr, 2010
6 commits
-
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sunxvr500: Ignore secondary output PCI devices.
sparc64: Implement perf_arch_fetch_caller_regs
sparc64: Update defconfig.
sparc64: Fix array size reported by vmemmap_populate()
sparc: Fix regset register window handling.
drivers/serial/sunsu.c: Correct use after free -
…/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
perf: Always build the powerpc perf_arch_fetch_caller_regs version
perf: Always build the stub perf_arch_fetch_caller_regs version
perf, probe-finder: Build fix on Debian
perf/scripts: Tuple was set from long in both branches in python_process_event()
perf: Fix 'perf sched record' deadlock
perf, x86: Fix callgraphs of 32-bit processes on 64-bit kernels
perf, x86: Fix AMD hotplug & constraint initialization
x86: Move notify_cpu_starting() callback to a later stage
x86,kgdb: Always initialize the hw breakpoint attribute
perf: Use hot regs with software sched switch/migrate events
perf: Correctly align perf event tracing buffer -
…l/git/tip/linux-2.6-tip
* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
sched: set_cpus_allowed_ptr(): Don't use rq->migration_thread after unlock
sched: Fix proc_sched_set_task() -
…nel/git/tip/linux-2.6-tip
* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
ring-buffer: Add missing unlock
tracing: Fix lockdep warning in global_clock() -
In initial design, walk_page_range() was designed just for walking page
table and it didn't require mmap_sem. Now, find_vma() etc.. are used
in walk_page_range() and we need mmap_sem around it.This patch adds mmap_sem around walk_page_range().
Because /proc//pagemap's callback routine use put_user(), we have
to get rid of it to do sane fix.Changelog: 2010/Apr/2
- fixed start_vaddr and end overflow
Changelog: 2010/Apr/1
- fixed start_vaddr calculation
- removed unnecessary cast.
- removed unnecessary change in smaps.
- use GFP_TEMPORARY instead of GFP_KERNELSigned-off-by: KAMEZAWA Hiroyuki
Cc: Matt Mackall
Cc: KOSAKI Motohiro
Cc: San Mehat
Cc: Brian Swetland
Cc: Dave Hansen
Cc: Andrew Morton
[ Fixed kmalloc failure return code as per Matt ]
Signed-off-by: Linus Torvalds
04 Apr, 2010
5 commits
-
These just represent the secondary and further heads attached to the
card, and they have different sets of PCI bar registers to map.So don't try to drive them in the main driver.
Reported-by: Frans van Berckel
Tested-by: Frans van Berckel
Signed-off-by: David S. Miller -
We provide regs->tstate, regs->tpc, regs->tnpc and
regs->u_regs[UREG_FP].regs->tstate is necessary for:
user_mode() (via perf_exclude_event())
perf_misc_flags() (via perf_prepare_sample())
regs->tpc is necessary for:
perf_instruction_pointer() (via perf_prepare_sample())
and regs->u_regs[UREG_FP] is necessary for:
perf_callchain() (via perf_prepare_sample())
The regs->tnpc value is provided just to be tidy.
Signed-off-by: David S. Miller
-
Signed-off-by: David S. Miller
-
vmemmap_populate() attempts to report the used index and total size of
vmemmap_table, but it wrongly shifts the total size so that it is
always shown as 0.Signed-off-by: Ben Hutchings
Signed-off-by: David S. Miller
03 Apr, 2010
22 commits
-
Now that software events use perf_arch_fetch_caller_regs() too, we
need the powerpc version to be always built.Fixes the following build error:
(.text+0x3210): undefined reference to `perf_arch_fetch_caller_regs'
(.text+0x3324): undefined reference to `perf_arch_fetch_caller_regs'
(.text+0x33bc): undefined reference to `perf_arch_fetch_caller_regs'
(.text+0x33ec): undefined reference to `perf_arch_fetch_caller_regs'
(.text+0xd4a0): undefined reference to `perf_arch_fetch_caller_regs'
arch/powerpc/kernel/built-in.o:(.text+0xd528): more undefined references to `perf_arch_fetch_caller_regs' follow
make[1]: *** [.tmp_vmlinux1] Error 1
make: *** [sub-make] Error 2Reported-by: Michael Ellerman
Reported-by: Ingo Molnar
Signed-off-by: Frederic Weisbecker
Cc: Peter Zijlstra
Cc: Arnaldo Carvalho de Melo
Cc: Paul Mackerras -
Now that software events use perf_arch_fetch_caller_regs() too, we
need the stub version to be always built in for archs that don't
implement it.Fixes the following build error in PARISC:
kernel/built-in.o: In function `perf_event_task_sched_out':
(.text.perf_event_task_sched_out+0x54): undefined reference to `perf_arch_fetch_caller_regs'Reported-by: Ingo Molnar
Signed-off-by: Frederic Weisbecker
Cc: Peter Zijlstra
Cc: Arnaldo Carvalho de Melo
Cc: Paul Mackerras -
* master.kernel.org:/home/rmk/linux-2.6-arm:
ARM: 5965/1: Fix soft lockup in at91 udc driver
ARM: 6006/1: ARM: Use the correct NOP size in memmove for Thumb-2 kernel builds
ARM: 6005/1: arm: kprobes: fix register corruption with jprobes
ARM: 6003/1: removing compilation warning from pl061.h
ARM: 6001/1: removing compilation warning comming from clkdev.h
ARM: 6000/1: removing compilation warning comming from
ARM: 5999/1: Including device.h and resource.h header files in linux/amba/bus.h
ARM: 5997/1: ARM: Correct the VFPv3 detection
ARM: 5996/1: ARM: Change the mandatory barriers implementation (4/4)
ARM: 5995/1: ARM: Add L2x0 outer_sync() support (3/4)
ARM: 5994/1: ARM: Add outer_cache_fns.sync function pointer (2/4)
ARM: 5993/1: ARM: Move the outer_cache definitions into a separate file (1/4) -
* 'merge' of git://git.secretlab.ca/git/linux-2.6:
powerpc/5200: in lpbfifo, flag DMA irqs as enabled after requesting them
powerpc/fsl: add device tree binding for QE firmware
of/flattree: Fix unhandled OF_DT_NOP tag when unflattening the device tree -
…t/frederic/random-tracing
* 'reiserfs/kill-bkl' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing:
reiserfs: Fix locking BUG during mount failure -
The missing initialization of the nb_cntl.strap_msi_enable does not
seem to be the only problem that prevents MSI, so that quirk is not
sufficient to enable MSI on all machines. To be safe, disable MSI
unconditionally for the internal graphics and HDMI audio on these
chipsets.[rjw: Added the PCI_VENDOR_ID_AI quirk.]
Signed-off-by: Clemens Ladisch
Signed-off-by: Rafael J. Wysocki
Signed-off-by: Linus Torvalds -
* 'kgdb-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb:
kgdb: Turn off tracing while in the debugger
kgdb: use atomic_inc and atomic_dec instead of atomic_set
kgdb: eliminate kgdb_wait(), all cpus enter the same way
kgdbts,sh: Add in breakpoint pc offset for superh
kgdb: have ebin2mem call probe_kernel_write once -
* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
Freezer: Fix buggy resume test for tasks frozen with cgroup freezer
Freezer: Only show the state of tasks refusing to freeze -
release_one_tty(tty) can be called when tty still has a reference
to pgrp/session. In this case we leak the pid.Signed-off-by: Oleg Nesterov
Reported-by: Catalin Marinas
Reported-and-tested-by: Tetsuo Handa
Acked-by: Linus Torvalds
Acked-by: Eric W. Biederman
Signed-off-by: Linus Torvalds -
Building chokes with:
In file included from /usr/include/gelf.h:53,
from /usr/include/elfutils/libdw.h:53,
from util/probe-finder.h:61,
from util/probe-finder.c:39:
/usr/include/libelf.h:98: error: expected specifier-qualifier-list before 'off64_t'
[...]Signed-off-by: Borislav Petkov
Acked-by: Masami Hiramatsu
LKML-Reference:
Signed-off-by: Ingo Molnar -
The kernel debugger should turn off kernel tracing any time the
debugger is active and restore it on resume.Signed-off-by: Jason Wessel
Reviewed-by: Steven Rostedt -
Memory barriers should be used for the kgdb cpu synchronization. The
atomic_set() does not imply a memory barrier.Reported-by: Will Deacon
Signed-off-by: Jason Wessel -
This is a kgdb architectural change to have all the cpus (master or
slave) enter the same function.A cpu that hits an exception (wants to be the master cpu) will call
kgdb_handle_exception() from the trap handler and then invoke a
kgdb_roundup_cpu() to synchronize the other cpus and bring them into
the kgdb_handle_exception() as well.A slave cpu will enter kgdb_handle_exception() from the
kgdb_nmicallback() and set the exception state to note that the
processor is a slave.Previously the salve cpu would have called kgdb_wait(). This change
allows the debug core to change cpus without resuming the system in
order to inspect arch specific cpu information.Signed-off-by: Jason Wessel
-
The kgdb test suite mimics the behavior of gdb. For the sh
architecture the pc must be decremented by 2 for software breakpoint.Signed-off-by: Jason Wessel
Acked-by: Paul Mundt -
Rather than call probe_kernel_write() one byte at a time, process the
whole buffer locally and pass the entire result in one go. This way,
architectures that need to do special handling based on the length can
do so, or we only end up calling memcpy() once.[sonic.zhang@analog.com: Reported original problem and preliminary patch]
Signed-off-by: Jason Wessel
Signed-off-by: Sonic Zhang
Signed-off-by: Mike Frysinger -
This is a fix to the signed/unsigned field handling in the
Python scripting engine, based on a patch from Roel Kluin.Basically, Python wants to use a PyInt (which is internally a
long) if it can i.e. if the value will fit into that type. If
not, it stores it into a PyLong, which isn't actually a long,
but an arbitrary-precision integer variable.The code below is similar to to what Python does internally, and
it seems to work as expected on the x86 and x86_64 sytems I
tested it on.Signed-off-by: Tom Zanussi
Cc: Arnaldo Carvalho de Melo
Cc: Roel Kluin
Cc: Frederic Weisbecker
Cc: rostedt@goodmis.org
LKML-Reference:
Signed-off-by: Ingo Molnar -
Trivial typo fix. rq->migration_thread can be NULL after
task_rq_unlock(), this is why we have "mt" which should be
used instead.Signed-off-by: Oleg Nesterov
Signed-off-by: Peter Zijlstra
LKML-Reference:
Signed-off-by: Ingo Molnar -
Latencytop clearing sum_exec_runtime via proc_sched_set_task() breaks
task_times(). Other places in kernel use nvcsw and nivcsw, which are
being cleared as well, Clear task statistics only.Reported-by: Török Edwin
Signed-off-by: Mike Galbraith
Cc: Hidetoshi Seto
Cc: Arjan van de Ven
Signed-off-by: Peter Zijlstra
LKML-Reference:
Signed-off-by: Ingo Molnar -
perf sched record can deadlock a box should the holder of
handle->data->lock take an interrupt, and then attempt to
acquire an rq lock held by a CPU trying to acquire the
same lock. Disable interrupts.CPU0 CPU1
sched event with rq->lock held
grab handle->data->lock
spin on handle->data->lock
interrupt
try to grab rq->lockReported-by: Li Zefan
Signed-off-by: Mike Galbraith
Tested-by: Li Zefan
Signed-off-by: Peter Zijlstra
Cc: Arnaldo Carvalho de Melo
Cc: Frederic Weisbecker
LKML-Reference:
Signed-off-by: Ingo Molnar -
When profiling a 32-bit process on a 64-bit kernel, callgraph tracing
stopped after the first function, because it has seen a garbage memory
address (tried to interpret the frame pointer, and return address as a
64-bit pointer).Fix this by using a struct stack_frame with 32-bit pointers when the
TIF_IA32 flag is set.Note that TIF_IA32 flag must be used, and not is_compat_task(), because
the latter is only set when the 32-bit process is executing a syscall,
which may not always be the case (when tracing page fault events for
example).Signed-off-by: Török Edwin
Signed-off-by: Peter Zijlstra
Acked-by: Frederic Weisbecker
Cc: "H. Peter Anvin"
Cc: Paul Mackerras
Cc: x86@kernel.org
Cc: linux-kernel@vger.kernel.org
LKML-Reference:
Signed-off-by: Ingo Molnar -
Commit 3f6da39 ("perf: Rework and fix the arch CPU-hotplug hooks") moved
the amd northbridge allocation from CPUS_ONLINE to CPUS_PREPARE_UP
however amd_nb_id() doesn't work yet on prepare so it would simply bail
basically reverting to a state where we do not properly track node wide
constraints - causing weird perf results.Fix up the AMD NorthBridge initialization code by allocating from
CPU_UP_PREPARE and installing it from CPU_STARTING once we have the
proper nb_id. It also properly deals with the allocation failing.Signed-off-by: Peter Zijlstra
[ robustify using amd_has_nb() ]
Signed-off-by: Stephane Eranian
LKML-Reference:
Signed-off-by: Ingo Molnar -
Because we need to have cpu identification things done by the time we run
CPU_STARTING notifiers.( This init ordering will be relied on by the next fix. )
Signed-off-by: Peter Zijlstra
LKML-Reference:
Signed-off-by: Ingo Molnar
