linux.git/arch/sh/include/asm, branch v2.6.37 Linux kernel source tree sh: wire up accept4 syscall (non-multiplexed path) 2010-12-14T08:58:10+00:00 Carmelo AMOROSO carmelo.amoroso@st.com 2010-12-13T10:20:26+00:00 21b6e4c7106b2d68a6710506d8706608272fd78b Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org> 
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
sh: Assume new page cache pages have dirty dcache lines. 2010-12-01T06:39:51+00:00 Paul Mundt lethal@linux-sh.org 2010-12-01T06:39:51+00:00 55661fc1f105ed75852e937bf8ea408270eb0cca This follows the ARM change c01778001a4f5ad9c62d882776235f3f31922fdd ("ARM: 6379/1: Assume new page cache pages have dirty D-cache") for the same rationale: There are places in Linux where writes to newly allocated page cache pages happen without a subsequent call to flush_dcache_page() (several PIO drivers including USB HCD). This patch changes the meaning of PG_arch_1 to be PG_dcache_clean and always flush the D-cache for a newly mapped page in update_mmu_cache(). This addresses issues seen with executing binaries from MMC, in addition to some of the other HCDs that don't explicitly do cache management for their pipe-in buffers. Requested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org> 
This follows the ARM change c01778001a4f5ad9c62d882776235f3f31922fdd
("ARM: 6379/1: Assume new page cache pages have dirty D-cache") for the
same rationale:

    There are places in Linux where writes to newly allocated page
    cache pages happen without a subsequent call to flush_dcache_page()
    (several PIO drivers including USB HCD). This patch changes the
    meaning of PG_arch_1 to be PG_dcache_clean and always flush the
    D-cache for a newly mapped page in update_mmu_cache().

This addresses issues seen with executing binaries from MMC, in
addition to some of the other HCDs that don't explicitly do cache
management for their pipe-in buffers.

Requested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
sh: Use GCC __builtin_prefetch() to implement prefetch(). 2010-11-18T05:53:18+00:00 Giuseppe CAVALLARO peppe.cavallaro@st.com 2010-11-17T06:50:17+00:00 d53e4307c2f3856167407a1d9b8f8fa001286066 GCC's __builtin_prefetch() was introduced a long time ago, all supported GCC versions have it. So this patch is to use it for implementing the prefetch on SH2A and SH4. The current prefetch implementation is almost equivalent with __builtin_prefetch. The third parameter in the __builtin_prefetch is the locality that it's not supported on SH architectures. It has been set to three and it should be verified if it's suitable for SH2A as well. I didn't test on this architecture. The builtin usage should be more efficient that an __asm__ because less barriers, and because the compiler doesn't see the inst as a "black box" allowing better code generation. This has been already done on other architectures (see the commit: 0453fb3c528c5eb3483441a466b24a4cb409eec5). Many thanks to Christian Bruel <christain.bruel@st.com> for his support on evaluate the impact of the gcc built-in on SH4 arch. No regressions found while testing with LMbench on STLinux targets. Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org> 
GCC's __builtin_prefetch() was introduced a long time ago, all
supported GCC versions have it. So this patch is to use it for
implementing the prefetch on SH2A and SH4.

The current  prefetch implementation is almost equivalent with
__builtin_prefetch.
The third parameter in the __builtin_prefetch is the locality
that it's not supported on SH architectures.  It has been set
to three and it should be verified if it's suitable for SH2A
as well. I didn't test on this architecture.

The builtin usage should be more efficient that an __asm__
because less barriers, and because the compiler doesn't see the
inst as a "black box" allowing better code generation.

This has been already done on other architectures (see the commit:
0453fb3c528c5eb3483441a466b24a4cb409eec5).

Many thanks to Christian Bruel <christain.bruel@st.com> for his
support on evaluate the impact of the gcc built-in on SH4 arch.

No regressions found while testing with LMbench on STLinux targets.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Merge branches 'sh/pio-death', 'sh/nommu', 'sh/clkfwk', 'sh/core' and 'sh/intc-extension' into sh-fixes-for-linus 2010-11-08T00:42:43+00:00 Paul Mundt lethal@linux-sh.org 2010-11-08T00:42:43+00:00 21e14266284bf448faabb4485895d72d8af1f2d8 






sh: Simplify phys_addr_mask()/PTE_PHYS_MASK for 29/32-bit.
2010-11-04T03:51:08+00:00

Paul Mundt
lethal@linux-sh.org

2010-11-04T03:51:08+00:00

ccedb20c6879ac0237b95b3500d69822f1e5e2ea

Given that __in_29bit_mode() is a constant for the non-PMB case, we can
simply use the PMB-facing version of phys_addr_mask() and drop the other
variants.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>





Given that __in_29bit_mode() is a constant for the non-PMB case, we can
simply use the PMB-facing version of phys_addr_mask() and drop the other
variants.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>







sh: nommu: Support building without an uncached mapping.
2010-11-04T03:46:19+00:00

Paul Mundt
lethal@linux-sh.org

2010-11-04T03:46:19+00:00

edc9a958fd31ef1d89f9eaee82b2a3882c8e34c9

Now that nommu selects 32BIT we run in to the situation where SH-2A
supports an uncached identity mapping by way of the BSC, while the SH-2
does not. This provides stubs for the PC manglers and tidies up some of
the system*.h mess in the process.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>





Now that nommu selects 32BIT we run in to the situation where SH-2A
supports an uncached identity mapping by way of the BSC, while the SH-2
does not. This provides stubs for the PC manglers and tidies up some of
the system*.h mess in the process.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>







sh: nommu: use 32-bit phys mode.
2010-11-04T03:32:24+00:00

Paul Mundt
lethal@linux-sh.org

2010-11-04T03:32:24+00:00

e2fcf74f3d3dabe8591732cd37869a0cc88ed7a5

The nommu code has regressed somewhat in that 29BIT gets set for the
SH-2/2A configs regardless of the fact that they are really 32BIT sans
MMU or PMB. This does a bit of tidying to get nommu properly selecting
32BIT as it was before.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>





The nommu code has regressed somewhat in that 29BIT gets set for the
SH-2/2A configs regardless of the fact that they are really 32BIT sans
MMU or PMB. This does a bit of tidying to get nommu properly selecting
32BIT as it was before.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>







Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
2010-10-28T19:06:51+00:00

Linus Torvalds
torvalds@linux-foundation.org

2010-10-28T19:06:51+00:00

3c3762957818dc902222733a8184f23102e24472

* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (32 commits)
  sh: intc: switch irq_desc iteration to new active IRQ iterator.
  sh: fix up cpu hotplug IRQ migration for irq_data changes.
  sh: oprofile: Make sure the backtrace op is available for timer-fallback.
  sh64: oprofile: Fix up kernel stack pointer size mismatch.
  sh: oprofile: Fix up and extend op_name_from_perf_id().
  sh: lockless get_user_pages_fast()
  sh64: _PAGE_SPECIAL support.
  sound: sh: ctrl_in/outX to __raw_read/writeX conversion.
  sh: disable deprecated genirq support.
  sh: update show_interrupts() for irq_data chip lookup.
  sh: intc: irq_data conversion.
  sh64: irq_data conversion.
  sh64: update for IRQ flag handling naming changes.
  rtc: rtc-rs5c313: ctrl_in/outX to __raw_read/writeX conversion.
  sh: mach-se: irq_data conversion.
  input: hp680_ts_input: ctrl_in/outX to __raw_read/writeX conversion.
  input: jornada680_kbd: ctrl_in/outX to __raw_read/writeX conversion.
  sh: hd64461: irq_data conversion.
  sh: mach-x3proto: irq_data conversion.
  sh: mach-systemh: irq_data conversion.
  ...





* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (32 commits)
  sh: intc: switch irq_desc iteration to new active IRQ iterator.
  sh: fix up cpu hotplug IRQ migration for irq_data changes.
  sh: oprofile: Make sure the backtrace op is available for timer-fallback.
  sh64: oprofile: Fix up kernel stack pointer size mismatch.
  sh: oprofile: Fix up and extend op_name_from_perf_id().
  sh: lockless get_user_pages_fast()
  sh64: _PAGE_SPECIAL support.
  sound: sh: ctrl_in/outX to __raw_read/writeX conversion.
  sh: disable deprecated genirq support.
  sh: update show_interrupts() for irq_data chip lookup.
  sh: intc: irq_data conversion.
  sh64: irq_data conversion.
  sh64: update for IRQ flag handling naming changes.
  rtc: rtc-rs5c313: ctrl_in/outX to __raw_read/writeX conversion.
  sh: mach-se: irq_data conversion.
  input: hp680_ts_input: ctrl_in/outX to __raw_read/writeX conversion.
  input: jornada680_kbd: ctrl_in/outX to __raw_read/writeX conversion.
  sh: hd64461: irq_data conversion.
  sh: mach-x3proto: irq_data conversion.
  sh: mach-systemh: irq_data conversion.
  ...







sh64: _PAGE_SPECIAL support.
2010-10-27T07:40:19+00:00

Paul Mundt
lethal@linux-sh.org

2010-10-27T07:40:19+00:00

a16382ce1cbcc3ab12274e20f92c09c439629162

Now that sh64 has grown extended page flag support we finally have a free
bit for _PAGE_SPECIAL. Wire it up.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>





Now that sh64 has grown extended page flag support we finally have a free
bit for _PAGE_SPECIAL. Wire it up.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>







mm: remove pte_*map_nested()
2010-10-26T23:52:08+00:00

Peter Zijlstra
a.p.zijlstra@chello.nl

2010-10-26T21:21:52+00:00

ece0e2b6406a995c371e0311190631ea34ad851a

Since we no longer need to provide KM_type, the whole pte_*map_nested()
API is now redundant, remove it.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Chris Metcalf <cmetcalf@tilera.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: David Miller <davem@davemloft.net>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>





Since we no longer need to provide KM_type, the whole pte_*map_nested()
API is now redundant, remove it.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Chris Metcalf <cmetcalf@tilera.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: David Miller <davem@davemloft.net>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>