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* Merge branch 'sh/stable-updates'Paul Mundt2010-02-01
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| * Split 'flush_old_exec' into two functionsLinus Torvalds2010-01-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'flush_old_exec()' is the point of no return when doing an execve(), and it is pretty badly misnamed. It doesn't just flush the old executable environment, it also starts up the new one. Which is very inconvenient for things like setting up the new personality, because we want the new personality to affect the starting of the new environment, but at the same time we do _not_ want the new personality to take effect if flushing the old one fails. As a result, the x86-64 '32-bit' personality is actually done using this insane "I'm going to change the ABI, but I haven't done it yet" bit (TIF_ABI_PENDING), with SET_PERSONALITY() not actually setting the personality, but just the "pending" bit, so that "flush_thread()" can do the actual personality magic. This patch in no way changes any of that insanity, but it does split the 'flush_old_exec()' function up into a preparatory part that can fail (still called flush_old_exec()), and a new part that will actually set up the new exec environment (setup_new_exec()). All callers are changed to trivially comply with the new world order. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | sh: machine_ops based reboot support.Paul Mundt2010-01-20
| | | | | | | | | | | | | | | | | | | | This provides a machine_ops-based reboot interface loosely cloned from x86, and converts the native sh32 and sh64 cases over to it. Necessary both for tying in SMP support and also enabling platforms like SDK7786 to add support for their microcontroller-based power managers. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* | sh64: Fix up the build for the thread_xstate changes.Paul Mundt2010-01-19
|/ | | | | | | 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 <lethal@linux-sh.org>
* sh: Fix up FPU build for SH5Matt Fleming2009-12-14
| | | | | | | | After the recent FPU optimisation commit the signature of save_fpu() changed. "regs" wasn't used in the implementation of save_fpu() anyway. Signed-off-by: Matt Fleming <matt@console-pimps.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Clean up more superfluous symbol exports.Paul Mundt2009-10-26
| | | | | | | Many of these symbols went away completely, or we just never cared about them in the first place. Trim the exports down to the essential set. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Tidy up NEFF-based sign extension for SH-5.Paul Mundt2009-08-04
| | | | | | | | This consolidates all of the NEFF-based sign extension for SH-5. In the future the other SH code will need to make use of this as well, so make it generic in preparation for more 32/64 consolidation. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6Linus Torvalds2009-06-18
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (56 commits) sh: Fix declaration of __kernel_sigreturn and __kernel_rt_sigreturn sh: Enable soc-camera in ap325rxa/migor/se7724 defconfigs. sh: remove stray markers. sh: defconfig updates. sh: pci: Initial PCI-Express support for SH7786 Urquell board. sh: Generic HAVE_PERF_COUNTER support. SH: convert migor to soc-camera as platform-device SH: convert ap325rxa to soc-camera as platform-device soc-camera: unify i2c camera device platform data sh: add platform data for r8a66597-hcd in setup-sh7723 sh: add platform data for r8a66597-hcd in setup-sh7366 sh: x3proto: add platform data for r8a66597-hcd sh: highlander: add platform data for r8a66597-hcd sh: sh7785lcr: add platform data for r8a66597-hcd sh: turn off irqs when disabling CMT/TMU timers sh: use kzalloc() for cpg clocks sh: unbreak WARN_ON() sh: Use generic atomic64_t implementation. sh: Revised clock function in highlander sh: Update r7780mp defconfig ...
| * sh: remove stray markers.Christoph Hellwig2009-06-18
| | | | | | | | | | | | | | | | | | | | arch/sh has a couple of stray markers without any users introduced in commit 3d58695edbfac785161bf282dc11fd42a483d6c9. Remove them in preparation of removing the markers in favour of the TRACE_EVENT macro (and also because we don't keep dead code around). Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* | ptrace: remove PT_DTRACE from avr32, mn10300, parisc, s390, sh, xtensaOleg Nesterov2009-06-18
|/ | | | | | | | | | | | | | | | | | | | avr32, mn10300, parisc, s390, sh, xtensa: They never set PT_DTRACE, but clear it after do_execve(). Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: David Howells <dhowells@redhat.com> Acked-by: Kyle McMartin <kyle@mcmartin.ca> Cc: Grant Grundler <grundler@parisc-linux.org> Cc: Matthew Wilcox <matthew@wil.cx> Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Chris Zankel <chris@zankel.net> Acked-by: Roland McGrath <roland@redhat.com> Acked-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Simplify copy_thread()Alexey Dobriyan2009-04-02
| | | | | | | | | | First argument unused since 2.3.11. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sh: Drop the BKL from sys_execve() on SH-5.Paul Mundt2009-01-21
| | | | | | | Brings it in line with the SH implementation, the BKL is not necessary here. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Convert sh64 /proc/asids to debugfs and generic sh.Paul Mundt2008-12-22
| | | | | | | | | | | This converts the sh64 /proc/asids entry to debugfs and enables it for all SH parts that have debugfs enabled. On MMU systems this can be used to determine which processes are using which ASIDs which in turn can be used for finer grained cache tag analysis. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Kill off sh64's unused alloc/free_task_struct() definitions.Paul Mundt2008-12-22
| | | | | | | | These were left over from some time ago, sh64 never got around to defining __HAVE_ARCH_TASK_STRUCT_ALLOCATOR during the conversion, and it has no need to. Kill these off and use the generic versions instead. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Split out the idle loop for reuse between _32/_64 variants.Paul Mundt2008-12-22
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Trivial trace_mark() instrumentation for core events.Paul Mundt2008-09-21
| | | | | | | | | | | | | | | | | | | | | | | | | | This implements a few trace points across events that are deemed interesting. This implements a number of trace points: - The page fault handler / TLB miss - IPC calls - Kernel thread creation The original LTTng patch had the slow-path instrumented, which fails to account for the vast majority of events. In general placing this in the fast-path is not a huge performance hit, as we don't take page faults for kernel addresses. The other bits of interest are some of the other trap handlers, as well as the syscall entry/exit (which is better off being handled through the tracehook API). Most of the other trap handlers are corner cases where alternate means of notification exist, so there is little value in placing extra trace points in these locations. Based on top of the points provided both by the LTTng instrumentation patch as well as the patch shipping in the ST-Linux tree, albeit in a stripped down form. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: fixup many sparse errors.Paul Mundt2008-09-07
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh/kernel/ cleanupsAdrian Bunk2008-07-28
| | | | | | | | | | | | | | | | | This patch contains the following cleanups: - make the following needlessly global code static: - cf-enabler.c: cf_init() - cpu/clock.c: __clk_enable() - cpu/clock.c: __clk_disable() - process_32.c: default_idle() - time_32.c: struct clocksource_sh - timers/timer-tmu.c: struct tmu_timer_ops - remove the following unused functions (no CONFIG_BLK_DEV_FD on sh): - process_{32,64}.c: disable_hlt() - process_{32,64}.c: enable_hlt() Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh64: add missing #include <asm/fpu.h>'sAdrian Bunk2008-04-15
| | | | | | | | | | This patch fixes some compile errors due to missing save_fpu() prototypes on sh64 caused by commit 9bbafce2eec190ef7e44b0eb1095ba17ce6ad3af (sh: Fix occasional FPU register corruption under preempt). Signed-off-by: Adrian Bunk <adrian.bunk@movial.fi> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Shut up some trivial build warnings.Paul Mundt2008-02-14
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: comment tidying for sh64->sh migration.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Bring the SH-5 FPU in line with the SH-4 FPU API.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Fix up proc ASIDs for CPU-local ASID cache accessors.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Share bug/debug traps across _32 and _64.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Kill off SH-5 enter_deep_standby() cruft.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Move over and enable FPU support for SH-5.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Split out arch/sh/kernel/process.c for _32 and _64 variants.Paul Mundt2008-01-27
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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