linux/arch/sh/include/asm/processor_32.h, branch v3.0.82

sh: constify prefetch pointers.

2011-01-11T05:39:35Z

prefetch()/prefetchw() are supposed to take a const void * instead of a straight void *, which the build recently started complaining about, fix them up. Signed-off-by: Paul Mundt

sh: Use GCC __builtin_prefetch() to implement prefetch().

2010-11-18T05:53:18Z

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 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 Signed-off-by: Stuart Menefy Signed-off-by: Paul Mundt

sh: Add kprobe-based event tracer.

2010-06-14T06:16:53Z

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

sh: __cpuinit annotate the CPU init path.

2010-04-21T03:20:42Z

All of the regular CPU init path needs to be __cpuinit annotated for CPU hotplug. Signed-off-by: Paul Mundt

sh: wire up SET/GET_UNALIGN_CTL.

2010-02-23T03:56:30Z

This hooks up the SET/GET_UNALIGN_CTL knobs cribbing the bulk of it from the PPC and ia64 implementations. The thread flags happen to be the logical inverse of what the global fault mode is set to, so this works out pretty cleanly. By default the global fault mode is used, with tasks now being able to override their own settings via prctl(). Signed-off-by: Paul Mundt

sh64: Fix up the build for the thread_xstate changes.

2010-01-19T06:40:03Z

This updates the sh64 processor info with the sh32 changes in order to tie in to the generic task_xstate management code. Signed-off-by: Paul Mundt

Merge branches 'sh/xstate', 'sh/hw-breakpoints' and 'sh/stable-updates'

2010-01-13T04:02:55Z

sh: Move over to dynamically allocated FPU context.

2010-01-13T03:51:40Z

This follows the x86 xstate changes and implements a task_xstate slab cache that is dynamically sized to match one of hard FP/soft FP/FPU-less. This also tidies up and consolidates some of the SH-2A/SH-4 FPU fragmentation. Now fpu state restorers are commonly defined, with the init_fpu()/fpu_init() mess reworked to follow the x86 convention. The fpu_init() register initialization has been replaced by xstate setup followed by writing out to hardware via the standard restore path. As init_fpu() now performs a slab allocation a secondary lighterweight restorer is also introduced for the context switch. In the future the DSP state will be rolled in here, too. More work remains for math emulation and the SH-5 FPU, which presently uses its own special (UP-only) interfaces. Signed-off-by: Paul Mundt

sh: Move start_thread() out of line.

2010-01-12T09:52:00Z

start_thread() will become a bit heavier with the xstate freeing to be added in, so move it out-of-line in preparation. Signed-off-by: Paul Mundt

sh: Abstracted SH-4A UBC support on hw-breakpoint core.

2010-01-05T10:06:45Z

This is the next big chunk of hw_breakpoint support. This decouples the SH-4A support from the core and moves it out in to its own stub, following many of the conventions established with the perf events layering. In addition to extending SH-4A support to encapsulate the remainder of the UBC channels, clock framework support for handling the UBC interface clock is added as well, allowing for dynamic clock gating. This also fixes up a regression introduced by the SIGTRAP handling that broke the ksym_tracer, to the extent that the current support works well with all of the ksym_tracer/ptrace/kgdb. The kprobes singlestep code will follow in turn. With this in place, the remaining UBC variants (SH-2A and SH-4) can now be trivially plugged in. Signed-off-by: Paul Mundt