- 05 1月, 2010 1 次提交
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由 Paul Mundt 提交于
SH-2A was referencing the old handler that no longer exists, fix it up. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 28 12月, 2009 1 次提交
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由 Paul Mundt 提交于
This is the initial step for converting singlestep handling via ptrace over to hw_breakpoints. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 22 12月, 2009 2 次提交
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由 Paul Mundt 提交于
This kills off kgdb's breakpoint handler and ties in to the notifier chain instead. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
Presently the hw_breakpoint code is the primary notifier dispatch for breakpoint traps, although it's only UBC traps that are of particular interest there. This patches in a check to allow non-UBC generated breakpoints to pass through down the remainder of the notifier chain, giving things like kgdb a chance at getting notified. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 21 12月, 2009 3 次提交
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由 Paul Mundt 提交于
The event callback handling has been removed in favour of going through a generic event handler to handle overflows. Follows the x86 change. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
We don't actually require this in the cpu_relax() polling case, so just cuddle these around the sleeping version. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
This fixes up some crashes with IRQs racing the need_resched() test under QEMU. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 17 12月, 2009 2 次提交
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由 Nobuhiro Iwamatsu 提交于
Add dmaengine platform device to SH7785. Signed-off-by: NNobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Guennadi Liakhovetski 提交于
Add a dmaengine platform device to sh7724, fix DMA channel interrupt numbers. Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: NNobuhiro Iwamatsu <iwamatsu@nigauri.org> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 15 12月, 2009 11 次提交
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由 Matt Fleming 提交于
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: NMatt Fleming <matt@console-pimps.org> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
Now when the sh-sci driver can do early serial output, get rid of the old duplicated code. This patch is V2 and removes support for "earlyprintk=serial" together with the following kconfig options: CONFIG_EARLY_SCIF_CONSOLE CONFIG_EARLY_SCIF_CONSOLE_PORT CONFIG_EARLY_PRINTK With this patch applied "earlyprintk=" support is always built-in the SuperH kernel. For this to work the serial driver must have early platform support and in the case of sh-sci the serial console needs to be enabled: CONFIG_SERIAL_SH_SCI_CONSOLE=y So after enabling the SuperH SCI console kconfig option you also need to point out port using the kernel command line: "earlyprintk=sh-sci.N[,baudrate][,keep]" Remember that clocks may be disabled by the boot loader so you may have to do some board specific static clock setup before earlyprintk will work on your platform. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
This patch breaks out the sh5 scif serial port platform data from a shared platform device to one platform device per port. Also, move the serial port to the list of early platform devices. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
This patch breaks out the sh4a scif serial port platform data from a shared platform device to one platform device per port. Also, add serial ports to the list of early platform devices. All sh4a except SuperH Mobile processors are modified by this patch. While at it, sh7757 gets early platform device support. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
This patch breaks out the sh4a scif serial port platform data from a shared platform device to one platform device per port. Also, add serial ports to the list of early platform devices. Only sh4a SuperH Mobile processors are modified by this patch. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
This patch breaks out the sh4 scif serial port platform data from a shared platform device to one platform device per port. Also, add serial ports to the list of early platform devices. While at it, get rid of the R2D ifdef in the processor code and adjust the defconfigs to use ttySC1. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
This patch breaks out the sh3 scif serial port platform data from a shared platform device to one platform device per port. Also, add serial ports to the list of early platform devices. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
This patch breaks out the sh2a scif serial port platform data from a shared platform device to one platform device per port. Also, add serial ports to the list of early platform devices. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
This patch breaks out the sh2 scif serial port platform data from a shared platform device to one platform device per port. Also, add serial ports to the list of early platform devices. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
This is V2 of early serial console support for the sh-sci driver. The early serial console is using early platform devices and "earlyprintk". To use this feature the early platform devices must be broken out to one device per port and the desired port should be selected on the kernel command line like: "earlyprintk=sh-sci.N[,baudrate][,keep]" Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Thomas Gleixner 提交于
Convert locks which cannot be sleeping locks in preempt-rt to raw_spinlocks. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Acked-by: NPeter Zijlstra <peterz@infradead.org> Acked-by: NIngo Molnar <mingo@elte.hu>
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- 14 12月, 2009 1 次提交
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由 Paul Mundt 提交于
Presently there are a couple of paths in to the alignment handler, where only the address error path presently quiets the notificiation messages based on the configuration settings. We carry over the notification level tests to the default alignment handler itself incase so that they behave uniformly. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 11 12月, 2009 3 次提交
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由 Al Viro 提交于
New helper - sys_mmap_pgoff(); switch syscalls to using it. Acked-by: NDavid S. Miller <davem@davemloft.net> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Paul Mundt 提交于
The stub already existed in the _64 syscall table, but was lacking a __NR_recvmmsg definition, while it was absent entirely for _32 variants. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
Syscall tracing metadata was shuffled around, update accordingly. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 09 12月, 2009 1 次提交
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由 Nicolas Palix 提交于
The macro container_of from kernel.h performs the same pointer arithmetic operation. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ type T; expression mptr; expression member; @@ - (void *)((char *)mptr - offsetof(T, member)) + container_of(mptr, T, member) // </smpl> Signed-off-by: NNicolas Palix <npalix@diku.dk> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 08 12月, 2009 1 次提交
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由 Paul Mundt 提交于
This adds preliminary support for the SH-4A UBC to the hw-breakpoints API. Presently only a single channel is implemented, and the ptrace interface still needs to be converted. This is the first step to cleaning up the long-standing UBC mess, making the UBC more generally accessible, and finally making it SMP safe. An additional abstraction will be layered on top of this as with the perf events code to permit the various CPU families to wire up support for their own specific UBCs, as many variations exist. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 04 12月, 2009 3 次提交
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由 Paul Mundt 提交于
Now that associative cache writes are no longer needed by the SH-4/SH-4A cache flush code, associative write support can be explicitly disabled for all SH-4A parts. This makes any associative write throw an exception, as this behaviour can not be assumed to exist on future parts. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
This patch updates the Runtime PM code for SuperH Mobile to allow drivers to have NULL as pm or callback value. With this in place there is no need for no-op functions. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
Fix one-off VEU3F size error for sh7724. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 30 11月, 2009 3 次提交
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由 Magnus Damm 提交于
This file breaks out the SuperH PFC code from arch/sh/kernel/gpio.c + arch/sh/include/asm/gpio.h to drivers/sh/pfc.c + include/linux/sh_pfc.h. Similar to the INTC stuff. The non-SuperH specific file location makes it possible to share the code between multiple architectures. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Alexey Dobriyan 提交于
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
Add sh7724 code to save and restore CPG state during R-standby. Only CPG registers IRDACLKCR and SPUCLKCR require software save and restore. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 25 11月, 2009 1 次提交
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由 Paul Mundt 提交于
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 24 11月, 2009 3 次提交
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由 Paul Mundt 提交于
This plugs in the fpu_counter manipulation for the SH-2A side also. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Stuart Menefy 提交于
A number of small optimisations to FPU handling, in particular: - move the task USEDFPU flag from the thread_info flags field (which is accessed asynchronously to the thread) to a new status field, which is only accessed by the thread itself. This allows locking to be removed in most cases, or can be reduced to a preempt_lock(). This mimics the i386 behaviour. - move the modification of regs->sr and thread_info->status flags out of save_fpu() to __unlazy_fpu(). This gives the compiler a better chance to optimise things, as well as making save_fpu() symmetrical with restore_fpu() and init_fpu(). - implement prepare_to_copy(), so that when creating a thread, we can unlazy the FPU prior to copying the thread data structures. Also make sure that the FPU is disabled while in the kernel, in particular while booting, and for newly created kernel threads, In a very artificial benchmark, the execution time for 2500000 context switches was reduced from 50 to 45 seconds. Signed-off-by: NStuart Menefy <stuart.menefy@st.com> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Giuseppe CAVALLARO 提交于
sh port of the sLeAZY-fpu feature currently implemented for some architectures such us i386. Right now the SH kernel has a 100% lazy fpu behaviour. This is of course great for applications that have very sporadic or no FPU use. However for very frequent FPU users... you take an extra trap every context switch. The patch below adds a simple heuristic to this code: after 5 consecutive context switches of FPU use, the lazy behavior is disabled and the context gets restored every context switch. After 256 switches, this is reset and the 100% lazy behavior is returned. Tests with LMbench showed no regression. I saw a little improvement due to the prefetching (~2%). The tests below also show that, with this sLeazy patch, indeed, the number of FPU exceptions is reduced. To test this. I hacked the lat_ctx LMBench to use the FPU a little more. sLeasy implementation =========================================== switch_to calls | 79326 sleasy calls | 42577 do_fpu_state_restore calls| 59232 restore_fpu calls | 59032 Exceptions: 0x800 (FPU disabled ): 16604 100% Leazy (default implementation) =========================================== switch_to calls | 79690 do_fpu_state_restore calls | 53299 restore_fpu calls | 53101 Exceptions: 0x800 (FPU disabled ): 53273 Signed-off-by: NGiuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: NStuart Menefy <stuart.menefy@st.com> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 19 11月, 2009 1 次提交
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由 Eric W. Biederman 提交于
For consistency drop & in front of every proc_handler. Explicity taking the address is unnecessary and it prevents optimizations like stubbing the proc_handlers to NULL. Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Joe Perches <joe@perches.com> Signed-off-by: NEric W. Biederman <ebiederm@xmission.com>
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- 18 11月, 2009 1 次提交
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由 Thomas Gleixner 提交于
The typename member of struct irq_chip was kept for migration purposes and is obsolete since more than 2 years. Fix up the leftovers. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: linux-sh@vger.kernel.org Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 12 11月, 2009 2 次提交
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由 Eric W. Biederman 提交于
Now that sys_sysctl is a generic wrapper around /proc/sys .ctl_name and .strategy members of sysctl tables are dead code. Remove them. Also add an C99 named initializer to the child member of unaligned_root to prevent chaos as the ctl_table definition changes over time. Cc: Paul Mundt <lethal@linux-sh.org> Signed-off-by: NEric W. Biederman <ebiederm@xmission.com>
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由 Paul Mundt 提交于
sh64 doesn't use GENERIC_BUG, which presently causes the handle_BUG() code to blow up. Fix up the dependencies and get it all building again. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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