Commit Graph

1520 Commits

Author SHA1 Message Date
Paul Mundt
51c6c9bb34 sh: perf: Set up perf_max_events.
Presently this is uninitialized in the architecture code, so it's
artificlally capped to the default initialization value. Set it up at
registration time.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-10-13 17:52:14 +09:00
Paul Mundt
5e5b3a9dc8 sh: perf: Support SH-X3 hardware counters.
The PMCAT location has conveniently moved on newer SH-X3 parts, special
case this for now with a note. This will probably want to be redone in a
less visually offensive way when/if more information becomes available.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-10-13 07:17:03 +09:00
Paul Mundt
ace2dc7d12 sh: wire up perf alignment and emulation faults.
This plugs in the alignment and emulation fault reporting for perf sw
events.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-10-13 06:55:26 +09:00
Nobuhiro Iwamatsu
901c28c257 sh: Fix address calculation of Initrd
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-10-06 16:53:28 +09:00
Akinobu Mita
bde40898c8 sh: fix uninitialized spinlock
The spinlock in traps_64.c is used without initialization.
This fixes it by declaring DEFINE_SPINLOCK() and makes the spinlock static
variable.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: linux-sh@vger.kernel.org
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-10-06 16:53:27 +09:00
Paul Mundt
d91ddc2553 sh: Wire up INTC subgroup splitting for SH7786 SCIF1.
SH7786 is the big user for subgroup splitting, mostly for the PCIe block,
but those will follow later. For now we simply split up SCIF1, as used by
the serial console on SDK7786 and others.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-10-05 23:26:42 +09:00
Paul Mundt
c1e30ad98f sh: intc: Support virtual mappings for IRQ subgroups.
Many interrupts that share a single mask source but are on different
hardware vectors will have an associated register tied to an INTEVT that
denotes the precise cause for the interrupt exception being triggered.

This introduces the concept of IRQ subgroups in the intc core, where
a virtual IRQ map is constructed for each of the pre-defined cause bits,
and a higher level chained handler takes control of the parent INTEVT.
This enables CPUs with heavily muxed IRQ vectors (especially across
disjoint blocks) to break things out in to a series of managed chained
handlers while being able to dynamically lookup and adopt the IRQs
created for them.

This is largely an opt-in interface, requiring CPUs to manually submit
IRQs for subgroup splitting, in addition to providing identifiers in
their enum maps that can be used for lazy lookup via the radix tree.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-10-05 04:47:03 +09:00
Paul Mundt
872f36a69f sh: Drop __initdata for SH-X3 pinmux tables.
The gpio sysfs support needs to get at these later, so drop the
__initdata annotations.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-10-04 05:00:19 +09:00
Paul Mundt
4bacd796cc sh: Support early IRQ vector map reservation for delayed controllers.
Some controllers will need to be initialized lazily due to pinmux
constraints, while others may simply have no need to be brought online if
there are no backing devices for them attached. In this case it's still
necessary to be able to reserve their hardware vector map before dynamic
IRQs get a hold of them.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-10-02 22:02:07 +09:00
Paul Mundt
742759eae6 sh: Handle pinmux for SH-X3 proto IRQ/IRL modes.
The SH-X3 proto CPU has all of the external IRQ and IRL pins muxed, make
sure that we're able to grab them before attempting to register their
respective IRQ controllers.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-10-02 19:43:40 +09:00
Paul Mundt
720a6bd785 sh: pinmux support for SH-X3 proto CPUs.
This adds in support for GPIO/pinmux on the SH-X3 proto CPUs. This will
subsequently be used by the x3proto board.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-10-02 19:20:51 +09:00
Paul Mundt
f9d885c3e5 sh: Support IRQ balancing for SH-X3 proto cores, too.
This adds in hardware IRQ auto-distribution support for SH-X3 proto CPUs,
following the SH7786 support.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-10-02 01:04:30 +09:00
Paul Mundt
e15f6870a2 sh: Support userimask for all SH-X3 interrupt controllers.
This shuffles some of the shared bits out of the 7786 code and in to a
shared SH-X3 support file. Presently just for userimask, but also a good
place for the IRQ balancing wrappers.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-10-02 00:43:43 +09:00
Paul Mundt
5924ad0d86 sh: Update SH-X3 subtype for clkdev lookups.
Rewrite the SH-X3 proto CPU clock framework for clkdev.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-10-01 23:49:56 +09:00
Magnus Damm
68a1aed703 sh: boot kernel with SR.BL set
Update the SH kernel to keep SR.BL set until the VBR
register has been initialized. Useful to allow boot
of the kernel even though exceptions are pending.

Without this patch there is a window of time when
exceptions such as NMI are enabled but no exception
handlers are installed.

This patch modifies both the zImage loader and the
actual kernel to boot with BL=1, but the zImage
loader is modfied in such a way that the init_sr
value is unchanged to not break the zImage loader
provided by kexec.

Tested on sh7724 Ecovec and on the SH4AL-DSP core
included in sh7372.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-09-30 09:43:32 +09:00
Guennadi Liakhovetski
4c62c595c2 sh: fix a kfree address in clkdev code
kfree() in clkdev_drop() function should actually be called with an address of
a struct clk_lookup_alloc object, and not struct clk_lookup, as presently done.
This just happens to work, because "struct clk_lookup cl" is the first
member in struct clk_lookup_alloc.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-09-30 09:43:32 +09:00
Paul Mundt
3f224f4e05 sh: provide generic arch_debugfs_dir.
While sh previously had its own debugfs root, there now exists a
common arch_debugfs_dir prototype, so we switch everything over to
that.  Presumably once more architectures start making use of this
we'll be able to just kill off the stub kdebugfs wrapper.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-09-24 04:04:26 +09:00
matt mooney
a234ca0faa sh: change to new flag variable
Replace EXTRA_CFLAGS with ccflags-y.

Signed-off-by: matt mooney <mfm@muteddisk.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-09-23 16:18:18 +09:00
Arnd Bergmann
d71415e884 sh: kill big kernel lock
The only BKL user in arch/sh protects a single bit,
so we can trivially replace it with test_and_set_bit.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: linux-sh@vger.kernel.org
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-09-16 16:37:56 +09:00
Paul Mundt
51d149be0a sh: Provide a non-multiplexed sys_recvmmsg path.
Now that the rest of the socket calls are provided through their own
paths, do the same for sys_recvmmsg. It's unlikely we'll ever be able to
kill off the socketcall path, but this at least permits userspace to
gradually begin migrating.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-09-14 17:43:11 +09:00
Carmelo AMOROSO
459ebb34bd sh: Add syscall entries for non multiplexed socket calls
Linux kernel already has socket syscalls that can be invoked
without the multiplexing sys_socketcall wrapper.
C library wrappers are ready to use them directly. It needs just
to define the missing syscall numbers and provide the related entries
into the syscalls table, like sh64 aleady does.

Signed-off-by: Francesco Rundo <francesco.rundo@st.com>
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-09-14 17:37:53 +09:00
Paul Mundt
b9afa3e015 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
	arch/sh/kernel/process_32.c

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-08-20 20:52:23 +09:00
David Howells
d7627467b7 Make do_execve() take a const filename pointer
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 <dhowells@redhat.com>
Tested-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-17 18:07:43 -07:00
Paul Mundt
d5b7fb7bb8 sh: fix up fallout from syscall arg constification.
sys_execve() now takes a const pointer, so reflect this change where the
syscall is actually defined, too. Fixes up a build error due to prototype
mismatch.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-08-16 14:52:06 +09:00
Paul Mundt
3e497df14d sh: wire up fanotify/prlimit64 syscalls.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-08-16 13:51:18 +09:00
Paul Mundt
bbcf6e8b66 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
	arch/sh/include/asm/Kbuild
	drivers/Makefile

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-08-16 13:32:24 +09:00
David Howells
c788732523 Mark arguments to certain syscalls as being const
Mark arguments to certain system calls as being const where they should be but
aren't.  The list includes:

 (*) The filename arguments of various stat syscalls, execve(), various utimes
     syscalls and some mount syscalls.

 (*) The filename arguments of some syscall helpers relating to the above.

 (*) The buffer argument of various write syscalls.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-13 16:53:13 -07:00
Linus Torvalds
4aed2fd8e3 Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (162 commits)
  tracing/kprobes: unregister_trace_probe needs to be called under mutex
  perf: expose event__process function
  perf events: Fix mmap offset determination
  perf, powerpc: fsl_emb: Restore setting perf_sample_data.period
  perf, powerpc: Convert the FSL driver to use local64_t
  perf tools: Don't keep unreferenced maps when unmaps are detected
  perf session: Invalidate last_match when removing threads from rb_tree
  perf session: Free the ref_reloc_sym memory at the right place
  x86,mmiotrace: Add support for tracing STOS instruction
  perf, sched migration: Librarize task states and event headers helpers
  perf, sched migration: Librarize the GUI class
  perf, sched migration: Make the GUI class client agnostic
  perf, sched migration: Make it vertically scrollable
  perf, sched migration: Parameterize cpu height and spacing
  perf, sched migration: Fix key bindings
  perf, sched migration: Ignore unhandled task states
  perf, sched migration: Handle ignored migrate out events
  perf: New migration tool overview
  tracing: Drop cpparg() macro
  perf: Use tracepoint_synchronize_unregister() to flush any pending tracepoint call
  ...

Fix up trivial conflicts in Makefile and drivers/cpufreq/cpufreq.c
2010-08-06 09:30:52 -07:00
Jiri Kosina
d790d4d583 Merge branch 'master' into for-next 2010-08-04 15:14:38 +02:00
Phil Edworthy
e9a4c4a1a1 sh: Add sh7724 BEU resources
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-08-04 15:58:18 +09:00
Paul Mundt
baea90ea14 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2010-08-04 13:52:34 +09:00
Ingo Molnar
9dcdbf7a33 Merge branch 'linus' into perf/core
Merge reason: Pick up the latest perf fixes.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-07-21 21:43:06 +02:00
Yinghai Lu
95f72d1ed4 lmb: rename to memblock
via following scripts

      FILES=$(find * -type f | grep -vE 'oprofile|[^K]config')

      sed -i \
        -e 's/lmb/memblock/g' \
        -e 's/LMB/MEMBLOCK/g' \
        $FILES

      for N in $(find . -name lmb.[ch]); do
        M=$(echo $N | sed 's/lmb/memblock/g')
        mv $N $M
      done

and remove some wrong change like lmbench and dlmb etc.

also move memblock.c from lib/ to mm/

Suggested-by: Ingo Molnar <mingo@elte.hu>
Acked-by: "H. Peter Anvin" <hpa@zytor.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-07-14 17:14:00 +10:00
Yoshihiro Shimoda
56c52986b1 sh: modify clock framework of SH7757
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-07-06 17:38:30 +09:00
Yoshihiro Shimoda
3810e96056 sh: modify pinmux for SH7757 2nd cut
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-07-06 17:38:29 +09:00
Yoshihiro Shimoda
c3721d5bbe sh: add some INTC_VECT for setup-sh7757
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-07-06 17:38:27 +09:00
Yoshihiro Shimoda
a7f5551cae sh: fix the id of scif in setup-sh7757
Because the value of CONFIG_SERIAL_SH_SCI_NR_UARTS is 3.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-07-06 17:38:26 +09:00
Yoshihiro Shimoda
e81e5ce23f sh: change PVR of SH7757 for 2nd cut
All 1st cut silicon in the wild has been replaced by the 2nd cut, so it's
safe to replace all of the 1st cut references and support.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-07-06 17:37:57 +09:00
Paul Mundt
59615ecdb5 sh: Provide a global TLB flush for U/I-TLB clear.
This provides a sledgehammer approach for clearing the TLBs, only to be
used in cases where we know we will never want to use the mappings again
and have no interest in preserving state. This also destroys wired
entries.

The primary use for this is when we are either entering or exiting the
kernel completely, in the latter case as a precursor for CPU reset by
MMU.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-07-02 15:44:09 +09:00
Ingo Molnar
646b1db495 Merge commit 'v2.6.35-rc3' into perf/core
Merge reason: Go from -rc1 base to -rc3 base, merge in fixes.
2010-06-18 10:53:19 +02:00
Uwe Kleine-König
bd06cac82c fix typos concerning "precedence"
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-06-17 11:31:19 +02:00
Paul Mundt
57fcfdf9b2 sh: kprobes SMP support.
Presently kprobes support relies on several saved opcode variables for
saving and restoring state, without any specific locking. This is
inherently racy on SMP, and given that we already use per-CPU variables
for everything else, convert these over too.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-06-14 17:06:10 +09:00
Paul Mundt
eaaaeef392 sh: Add kprobe-based event tracer.
This follows the x86/ppc changes for kprobe-based event tracing on sh.
While kprobes is only supported on 32-bit sh, we provide the API for
HAVE_REGS_AND_STACK_ACCESS_API for both 32 and 64-bit.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-06-14 15:16:53 +09:00
Peter Zijlstra
e78505958c perf: Convert perf_event to local_t
Since now all modification to event->count (and ->prev_count
and ->period_left) are local to a cpu, change then to local64_t so we
avoid the LOCK'ed ops.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-06-09 11:12:37 +02:00
Paul Mundt
019e2574f9 Merge branch 'sh/iomap' 2010-06-02 16:32:12 +09:00
Paul Mundt
86e4dd5add sh: support for platforms without PIO.
This extends some of the existing special casing for HAS_IOPORT
platforms and gets it to the point where platforms can begin to
conditionally select it.

The major changes here are that the PIO routines themselves go away
completely, including all of the machvec port mapping wrappers. With this
in place it's possible for any non-machvec abusing platform to disable
PIO completely. At present this is left as an opt-in until the abusers
are the odd ones out instead of the majority.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-06-02 16:31:42 +09:00
Paul Mundt
8fa76f7e61 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2010-05-31 12:59:19 +09:00
Mike Frysinger
9c1a125921 ptrace: unify FDPIC implementations
The Blackfin/FRV/SuperH guys all have the same exact FDPIC ptrace code in
their arch handlers (since they were probably copied & pasted).  Since
these ptrace interfaces are an arch independent aspect of the FDPIC code,
unify them in the common ptrace code so new FDPIC ports don't need to copy
and paste this fundamental stuff yet again.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Roland McGrath <roland@redhat.com>
Acked-by: David Howells <dhowells@redhat.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-27 09:12:44 -07:00
Paul Mundt
8a37f52052 sh: handle early calls to return_address() when using dwarf unwinder.
The dwarf unwinder ties in to an early initcall, but it's possible that
return_address() calls will be made prior to that. This implements some
additional error handling in to the dwarf unwinder as well as an exit
path in the return_address() case to bail out if the unwinder hasn't come
up yet.

This fixes a NULL pointer deref in early boot when mempool_alloc() blows
up on the not-yet-ready mempool via dwarf_unwind_stack().

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-05-25 16:16:40 +09:00
Paul Mundt
ed0ad6d3a0 sh: fix up sh7786 dmaengine build.
The asm/dmaengine.h header is gone now, update accordingly.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-05-22 17:12:23 +09:00