- 15 5月, 2010 1 次提交
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由 Russell King 提交于
Consistently name all SMP platform related functions. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 23 4月, 2010 1 次提交
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由 Anton Vorontsov 提交于
This patch adds support for PCI domains on ARM platforms. Also, protect asm/mach/pci.h from multiple inclustions, otherwise build fails because of pci_domain_nr() and pci_proc_domain() redefinitions. Signed-off-by: NAnton Vorontsov <avorontsov@mvista.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 14 4月, 2010 1 次提交
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由 Russell King 提交于
We have our own private implementation for ISA-like DMA which has been missing exposure via the /proc/dma interface. Add support for this. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 24 3月, 2010 1 次提交
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由 John Stultz 提交于
Convert arm to use GENERIC_TIME via the arch_getoffset() infrastructure, reducing the amount of arch specific code we need to maintain. The arm architecture is the last arch that need to be converted. Signed-off-by: NJohn Stultz <johnstul@us.ibm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk> Cc: Andrew Morton <akpm@linux-foundation.org>
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- 16 3月, 2010 1 次提交
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由 Anders Grafström 提交于
ARMv5T and earlier require that a ldm {}^ instruction is not followed by an instruction that accesses banked registers. This patch restores the nop that was lost in commit b86040a5. Signed-off-by: NAnders Grafström <grfstrm@users.sourceforge.net> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 15 3月, 2010 2 次提交
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由 Will Deacon 提交于
To support SMP platforms, KGDB requires the architecture backend to implement the kgdb_roundup_cpus function. This patch, taken against 2.6.33, implements the function for ARM based on the MIPS port. Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Jean-Michel Hautbois <jhautbois@gmail.com> Cc: KGDB Mailing List <kgdb-bugreport@lists.sourceforge.net> Signed-off-by: NWill Deacon <will.deacon@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
The page table and secondary data which we're asking the secondary CPU to make use of has to hit RAM to ensure that the secondary CPU can see it since it may not be taking part in coherency or cache searches at this point. Acked-by: NSantosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 13 3月, 2010 6 次提交
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由 Will Deacon 提交于
The event selection mask for ARMv7 cores [ARMV7_EVTSEL_MASK] is incorrectly set to 0x7f. This means that the top bit of an event ID is ignored, so counting branch misses (id=0x10) and ISBs (id=0x90) give the same results. This patch sets the event selection mask to the correct value of 0xff. Signed-off-by: NJean Pihet <jpihet@mvista.com> Signed-off-by: NWill Deacon <will.deacon@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Will Deacon 提交于
If IRQ balancing is used on a multicore ARM system, PMU interrupt lines may be relocated onto CPUs other than the one causing the counter overflow. This can result in misattribution of events to the wrong core and, in the case that the CPU handling the interrupt has not experience counter overflow, the interrupt can be disabled because the handler returns IRQ_NONE. This patch adds the IRQF_NOBALANCING flag to the request_irq call in perf_events.c. Acked-by: NJamie Iles <jamie.iles@picochip.com> Signed-off-by: NWill Deacon <will.deacon@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Christoph Hellwig 提交于
Use the generic ptrace_resume code for PTRACE_SYSCALL, PTRACE_CONT, PTRACE_KILL and PTRACE_SINGLESTEP. This implies defining arch_has_single_step in <asm/ptrace.h> and implementing the user_enable_single_step and user_disable_single_step functions, which also causes the breakpoint information to be cleared on fork, which could be considered a bug fix. Also the TIF_SYSCALL_TRACE thread flag is now cleared on PTRACE_KILL which it previously wasn't and the single stepping disable only happens if the tracee process isn't a zombie yet, which is consistent with all architectures using the modern ptrace code. Signed-off-by: NChristoph Hellwig <hch@lst.de> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Roland McGrath <roland@redhat.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Christoph Hellwig 提交于
Add a generic implementation of the ipc demultiplexer syscall. Except for s390 and sparc64 all implementations of the sys_ipc are nearly identical. There are slight differences in the types of the parameters, where mips and powerpc as the only 64-bit architectures with sys_ipc use unsigned long for the "third" argument as it gets casted to a pointer later, while it traditionally is an "int" like most other paramters. frv goes even further and uses unsigned long for all parameters execept for "ptr" which is a pointer type everywhere. The change from int to unsigned long for "third" and back to "int" for the others on frv should be fine due to the in-register calling conventions for syscalls (we already had a similar issue with the generic sys_ptrace), but I'd prefer to have the arch maintainers looks over this in details. Except for that h8300, m68k and m68knommu lack an impplementation of the semtimedop sub call which this patch adds, and various architectures have gets used - at least on i386 it seems superflous as the compat code on x86-64 and ia64 doesn't even bother to implement it. [akpm@linux-foundation.org: add sys_ipc to sys_ni.c] Signed-off-by: NChristoph Hellwig <hch@lst.de> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Jeff Dike <jdike@addtoit.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Reviewed-by: NH. Peter Anvin <hpa@zytor.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: James Morris <jmorris@namei.org> Cc: Andreas Schwab <schwab@linux-m68k.org> Acked-by: NJesper Nilsson <jesper.nilsson@axis.com> Acked-by: NRussell King <rmk+kernel@arm.linux.org.uk> Acked-by: NDavid Howells <dhowells@redhat.com> Acked-by: NKyle McMartin <kyle@mcmartin.ca> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Christoph Hellwig 提交于
Add a generic implementation of the old mmap() syscall, which expects its argument in a memory block and switch all architectures over to use it. Signed-off-by: NChristoph Hellwig <hch@lst.de> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Jeff Dike <jdike@addtoit.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Reviewed-by: NH. Peter Anvin <hpa@zytor.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: James Morris <jmorris@namei.org> Cc: Andreas Schwab <schwab@linux-m68k.org> Acked-by: NJesper Nilsson <jesper.nilsson@axis.com> Acked-by: NRussell King <rmk+kernel@arm.linux.org.uk> Acked-by: NGreg Ungerer <gerg@uclinux.org> Acked-by: NDavid Howells <dhowells@redhat.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Christoph Hellwig 提交于
Add a generic implementation of the old select() syscall, which expects its argument in a memory block and switch all architectures over to use it. Signed-off-by: NChristoph Hellwig <hch@lst.de> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Jeff Dike <jdike@addtoit.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Reviewed-by: NH. Peter Anvin <hpa@zytor.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: James Morris <jmorris@namei.org> Acked-by: NAndreas Schwab <schwab@linux-m68k.org> Acked-by: NRussell King <rmk+kernel@arm.linux.org.uk> Acked-by: NGreg Ungerer <gerg@uclinux.org> Acked-by: NDavid Howells <dhowells@redhat.com> Cc: Andreas Schwab <schwab@linux-m68k.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 10 3月, 2010 1 次提交
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由 Peter Zijlstra 提交于
This makes it easier to extend perf_sample_data and fixes a bug on arm and sparc, which failed to set ->raw to NULL, which can cause crashes when combined with PERF_SAMPLE_RAW. It also optimizes PowerPC and tracepoint, because the struct initialization is forced to zero out the whole structure. Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: NJean Pihet <jpihet@mvista.com> Reviewed-by: NFrederic Weisbecker <fweisbec@gmail.com> Acked-by: NDavid S. Miller <davem@davemloft.net> Cc: Jamie Iles <jamie.iles@picochip.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Stephane Eranian <eranian@google.com> Cc: stable@kernel.org LKML-Reference: <20100304140100.315416040@chello.nl> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 07 3月, 2010 1 次提交
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由 Laurent Pinchart 提交于
If PC points outside kernel text, start printing the backtrace at LR instead. Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 23 2月, 2010 2 次提交
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由 Dominik Brodowski 提交于
Now that we return the new resource start position, there is no need to update "struct resource" inside the align function. Therefore, mark the struct resource as const. Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: NDominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
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由 Dominik Brodowski 提交于
As suggested by Linus, align functions should return the start of a resource, not void. An update of "res->start" is no longer necessary. Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: NDominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
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- 19 2月, 2010 1 次提交
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由 Santosh Shilimkar 提交于
The 'outer_cache' variable is needed by the outer_inv_range(), outer_clean_range() and outer_flush_range() functions, which are declared as inline in asm/cacheflush.h. Otherwise drivers built as a loadable module, which access these functions, will have an undefined symbol. Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 16 2月, 2010 9 次提交
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由 Russell King 提交于
If we're only reading the VFP context via the ptrace call, there's no need to invalidate the hardware context - we only need to do that on PTRACE_SETVFPREGS. This allows more efficient monitoring of a traced task. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
The generic ptrace_request() handles these for us, so there's no need to duplicate them in arch code. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Daniel Jacobowitz 提交于
Recognize 0xf7f0 0xa000 as a 32-bit breakpoint instruction for Thumb-2. Signed-off-by: NDaniel Jacobowitz <dan@codesourcery.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Jeremy Kerr 提交于
drivers/of/fdt expects a cmd_line symbol, while arm uses command_line. Change to the former, so that we can eventually share with the fdt code. Signed-off-by: NJeremy Kerr <jeremy.kerr@canonical.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Kernel debuggers want to be informed of die() events, so that they can take some action to allow the problem to be inspected. Provide the hook in a similar manner to x86. Note that we currently don't implement the individual trap hooks. Acked-by: NJason Wessel <jason.wessel@windriver.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Jeremy Kerr 提交于
The ARM setup code includes its own parser for early params, there's also one in the generic init code. This patch removes __early_init (and related code) from arch/arm/kernel/setup.c, and changes users to the generic early_init macro instead. The generic macro takes a char * argument, rather than char **, so we need to update the parser functions a little. Signed-off-by: NJeremy Kerr <jeremy.kerr@canonical.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Always creating this directory avoids other users having to jump through silly hoops when they want to share this directory. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
All RTC drivers have been converted to rtclib, so the old code providing the set_rtc function pointer, save_time_delta() and restore_time_delta() functions is obsolete. Remove it. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 15 2月, 2010 1 次提交
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由 Russell King 提交于
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk> Tested-By: NSantosh Shilimkar <santosh.shilimkar@ti.com>
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- 13 2月, 2010 4 次提交
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由 Tony Lindgren 提交于
Otherwise more complicated uart configuration won't be possible. We can use r1 for tmp register for both head.S and debug.S. NOTE: This patch depends on another patch to add the the tmp register into all debug-macro.S files. That can be done with: $ sed -i -e "s/addruart,rx|addruart, rx/addruart, rx, tmp/" arch/arm/*/include/*/debug-macro.S Signed-off-by: NTony Lindgren <tony@atomide.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Jean PIHET 提交于
Adds the Performance Events support for ARMv7 processor, using the PMNC unit in HW. Supports the following: - Cortex-A8 and Cortex-A9 processors, - dynamic detection of the number of available counters, based on the PMCR value, - runtime detection of the CPU arch (v6 or v7) and model (Cortex-A8 or Cortex-A9) Tested on OMAP3 (Cortex-A8) only. Signed-off-by: NJean Pihet <jpihet@mvista.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Jamie Iles 提交于
This patch implements support for ARMv6 performance counters in the Linux performance events subsystem. ARMv6 architectures that have the performance counters should enable HW_PERF_EVENTS to get hardware performance events support in addition to the software events. Note: only ARM Ltd ARM cores are supported. This implementation also provides an ARM PMU abstraction layer to allow ARMv7 and others to be supported in the future by adding new a 'struct arm_pmu'. Cc: Jean Pihet <jpihet@mvista.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: NJamie Iles <jamie.iles@picochip.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Jamie Iles 提交于
To add support for perf events and to allow the hardware counters to be shared with oprofile, we need a way to reserve access to the pmu (performance monitor unit). Platforms with PMU interrupts should register the interrupts in arch/arm/kernel/pmu.c Signed-off-by: NJamie Iles <jamie.iles@picochip.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 20 1月, 2010 1 次提交
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由 Tony Lindgren 提交于
Without this patch arch/arm/compressed/head.S defaults to generic DCC code that does not work for v7. For more information on the v7 DCC, see Cortex-A8 TRM "12.11.1 Debug communications channel". To use it with post 2.6.33-rc1 or later, you need to have: CONFIG_DEBUG_LL=y ONFIG_DEBUG_ICEDCC=y CONFIG_EARLY_PRINTK=y Earlier kernels need commit 93fd03a8 backported. Tested on omap3430. Signed-off-by: NTony Lindgren <tony@atomide.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 18 1月, 2010 1 次提交
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由 Rabin Vincent 提交于
This reverts commit 14f0aa35. That commit was needed earlier because system call restarting for OABI (compat) required an executable stack and thus had problems with NX. Since ab72b007 ("ARM: Fix signal restart issues with NX and OABI compat") has reworked the code to not require an executable stack anymore, we can re-enable NX support for kernels with OABI (compat) support. Signed-off-by: NRabin Vincent <rabin@rab.in> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 13 1月, 2010 1 次提交
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由 Russell King 提交于
The __kuser_cmpxchg code uses an ARMv6 dmb instruction, rather than one based upon the architecture being built for. Switch to using the macro provided for this purpose, which also eliminates the need for an ifdef. Acked-by: NNicolas Pitre <nico@fluxnic.net> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 09 1月, 2010 1 次提交
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由 Rabin Vincent 提交于
Fix the following warning, which appears when the register dump for a faulting process is printed in a kernel with SMP, DEBUG_PREEMPT, and DEBUG_USER (with user_debug=31) enabled: BUG: using smp_processor_id() in preemptible [00000000] code: init/1 caller is __show_regs+0x18/0x234 Backtrace: [<c0159e5c>] (dump_backtrace+0x0/0x114) from [<c01faf30>] (dump_stack+0x18/0x1c) r6:c781a000 r5:c0157544 r4:00000001 r3:00000000 [<c01faf18>] (dump_stack+0x0/0x1c) from [<c01e5230>] (debug_smp_processor_id+0xc4/0xf8) [<c01e516c>] (debug_smp_processor_id+0x0/0xf8) from [<c0157544>] (__show_regs+0x18/0x234) r6:c781bfb0 r5:00000000 r4:c781bfb0 r3:00000000 [<c015752c>] (__show_regs+0x0/0x234) from [<c01577a0>] (show_regs+0x40/0x50) [<c0157760>] (show_regs+0x0/0x50) from [<c015c968>] (__do_user_fault+0x5c/0xa4) r4:c781c000 r3:00000000 [<c015c90c>] (__do_user_fault+0x0/0xa4) from [<c015cbe0>] (do_page_fault+0x1b4/0x1e4) r7:00000000 r6:00010000 r5:c781bfb0 r4:c781c000 [<c015ca2c>] (do_page_fault+0x0/0x1e4) from [<c01554c8>] (do_DataAbort+0x3c/0xa0) [<c015548c>] (do_DataAbort+0x0/0xa0) from [<c01560c4>] (ret_from_exception+0x0/0x10) Signed-off-by: NRabin Vincent <rabin@rab.in> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 25 12月, 2009 1 次提交
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由 Russell King 提交于
We can't request the cascade channel before it's been registered, so move it afterwards. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 18 12月, 2009 1 次提交
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由 Russell King 提交于
This avoids races in the VFP code where the dead thread may have state on another CPU. By moving this code to exit_thread(), we will be running as the thread, and therefore be running on the current CPU. This means that we can ensure that the only local state is accessed in the thread notifiers. Acked-by: NCatalin Marinas <catalin.marinas@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 15 12月, 2009 2 次提交
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由 Alan Jenkins 提交于
The Kconfigs for in-tree floating point emulation do not allow building as modules. That leaves the Acorn FPEmulator module. I found two public releases of this as a binary module for 2.1 and 2.2 kernels, optimized for ARMV4.[1] If there is a resurgence of interest in this, the symbols can always be re-exported. This allows the EXPORT_SYMBOL_ALIAS() hack to be removed. The ulterior motive here is that EXPORT_SYMBOL_ALIAS() makes it harder to sort the resulting kernel symbol tables. Sorted symbol tables will allow faster symbol resolution during module loading. Note that fp_send_sigs() and fp_printk() are simply aliases for existing exports and add no obvious value. Similarly fp_enter could easily be renamed to kern_fp_enter at the point of definition. Therefore removing EXPORT_SYMBOL_ALIAS will not serve as a material obstacle to re-adding the exports should they be desired in future. Build tested only. [1] http://ftp.arm.linux.org.uk/pub/linux/arm/fpemulator/Signed-off-by: NAlan Jenkins <alan-jenkins@tuffmail.co.uk> CC: Russell King <linux@arm.linux.org.uk> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Alan Jenkins 提交于
Commit 023bf6f1 "linker script: unify usage of discard definition" changed the linker scripts for all architectures except for ARM. I can find no discussion about this ommision, so here are the changes for ARM. These changes are exactly parallel to the ia64 case. "ia64 is notable because it first throws away some ia64 specific subsections and then include the rest of the sections into the final image, so those sections must be discarded before the inclusion." Not boot-tested. In build testing, the modified linker script generated an identical vmlinux file. [I would like to be able to rely on this unified discard definition. I want to sort the kernel symbol tables to allow faster symbol resolution during module loading. The simplest way appears to be to generate sorted versions from vmlinux.o, link them in to vmlinux, _and discard the original unsorted tables_. This work is driven by my x86 netbook, but it is implemented at a generic level. It is possible it will benefit some ARM systems also.] Signed-off-by: NAlan Jenkins <alan-jenkins@tuffmail.co.uk> Acked-by: NRussell King <rmk+kernel@arm.linux.org.uk> Acked-by-without-testing: Tejun Heo <tj@kernel.org> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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