- 17 12月, 2009 6 次提交
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由 David Daney 提交于
Processors that support the mips64r2 ISA can in four instructions convert a shifted PGD pointer stored in the upper bits of c0_context into a usable pointer. By doing this we save a memory load and associated potential cache miss in the TLB exception handlers. Since the upper bits of c0_context were holding the CPU number, we move this to the upper bits of c0_xcontext which doesn't have enough bits to hold the PGD pointer, but has plenty for the CPU number. Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 David Daney 提交于
Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 David Daney 提交于
The Octeon SOC has two types of Ethernet ports, each type with its own driver. However, the PHYs for all the ports are controlled by a common MDIO bus. Because the mdio driver is not associated with a particular driver, but is instead a system level resource, we create s stand-alone driver for it. As for the driver, we put the register definitions in arch/mips/include/asm/octeon where most of the other Octeon register definitions live. This is a platform driver with the platform device for "mdio-octeon" being registered in the platform startup code. Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com> Acked-by: NDavid S. Miller <davem@davemloft.net> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 David Daney 提交于
Reorder PT ops to avoid pipeline stalls. Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Dmitri Vorobiev 提交于
The MIPS-specific macro CL_SIZE is merely aliasing the macro COMMAND_LINE_SIZE. Other architectures use the latter; also, COMMAND_LINE_SIZE is documented in kernel-parameters.txt, so let's use it, and remove the alias. Signed-off-by: NDmitri Vorobiev <dmitri.vorobiev@movial.com> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Dmitri Vorobiev 提交于
Nobody is using the ARCS-specific prom_getcmdline(), so let's remove it. Signed-off-by: NDmitri Vorobiev <dmitri.vorobiev@movial.com> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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- 16 12月, 2009 1 次提交
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由 Christoph Hellwig 提交于
Currently all architectures but microblaze unconditionally define USE_ELF_CORE_DUMP. The microblaze omission seems like an error to me, so let's kill this ifdef and make sure we are the same everywhere. Signed-off-by: NChristoph Hellwig <hch@lst.de> Acked-by: NHugh Dickins <hugh.dickins@tiscali.co.uk> Cc: <linux-arch@vger.kernel.org> Cc: Michal Simek <michal.simek@petalogix.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 15 12月, 2009 5 次提交
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由 Thomas Gleixner 提交于
Name space cleanup for rwlock functions. No functional change. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Acked-by: NPeter Zijlstra <peterz@infradead.org> Acked-by: NDavid S. Miller <davem@davemloft.net> Acked-by: NIngo Molnar <mingo@elte.hu> Cc: linux-arch@vger.kernel.org
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由 Thomas Gleixner 提交于
Not strictly necessary for -rt as -rt does not have non sleeping rwlocks, but it's odd to not have a consistent naming convention. No functional change. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Acked-by: NPeter Zijlstra <peterz@infradead.org> Acked-by: NDavid S. Miller <davem@davemloft.net> Acked-by: NIngo Molnar <mingo@elte.hu> Cc: linux-arch@vger.kernel.org
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由 Thomas Gleixner 提交于
Name space cleanup. No functional change. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Acked-by: NPeter Zijlstra <peterz@infradead.org> Acked-by: NDavid S. Miller <davem@davemloft.net> Acked-by: NIngo Molnar <mingo@elte.hu> Cc: linux-arch@vger.kernel.org
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由 Thomas Gleixner 提交于
Further name space cleanup. No functional change Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Acked-by: NPeter Zijlstra <peterz@infradead.org> Acked-by: NDavid S. Miller <davem@davemloft.net> Acked-by: NIngo Molnar <mingo@elte.hu> Cc: linux-arch@vger.kernel.org
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由 Thomas Gleixner 提交于
The raw_spin* namespace was taken by lockdep for the architecture specific implementations. raw_spin_* would be the ideal name space for the spinlocks which are not converted to sleeping locks in preempt-rt. Linus suggested to convert the raw_ to arch_ locks and cleanup the name space instead of using an artifical name like core_spin, atomic_spin or whatever No functional change. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Acked-by: NPeter Zijlstra <peterz@infradead.org> Acked-by: NDavid S. Miller <davem@davemloft.net> Acked-by: NIngo Molnar <mingo@elte.hu> Cc: linux-arch@vger.kernel.org
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- 10 12月, 2009 1 次提交
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由 Christoph Hellwig 提交于
While Linux provided an O_SYNC flag basically since day 1, it took until Linux 2.4.0-test12pre2 to actually get it implemented for filesystems, since that day we had generic_osync_around with only minor changes and the great "For now, when the user asks for O_SYNC, we'll actually give O_DSYNC" comment. This patch intends to actually give us real O_SYNC semantics in addition to the O_DSYNC semantics. After Jan's O_SYNC patches which are required before this patch it's actually surprisingly simple, we just need to figure out when to set the datasync flag to vfs_fsync_range and when not. This patch renames the existing O_SYNC flag to O_DSYNC while keeping it's numerical value to keep binary compatibility, and adds a new real O_SYNC flag. To guarantee backwards compatiblity it is defined as expanding to both the O_DSYNC and the new additional binary flag (__O_SYNC) to make sure we are backwards-compatible when compiled against the new headers. This also means that all places that don't care about the differences can just check O_DSYNC and get the right behaviour for O_SYNC, too - only places that actuall care need to check __O_SYNC in addition. Drivers and network filesystems have been updated in a fail safe way to always do the full sync magic if O_DSYNC is set. The few places setting O_SYNC for lower layers are kept that way for now to stay failsafe. We enforce that O_DSYNC is set when __O_SYNC is set early in the open path to make sure we always get these sane options. Note that parisc really screwed up their headers as they already define a O_DSYNC that has always been a no-op. We try to repair it by using it for the new O_DSYNC and redefinining O_SYNC to send both the traditional O_SYNC numerical value _and_ the O_DSYNC one. Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Grant Grundler <grundler@parisc-linux.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Ingo Molnar <mingo@elte.hu> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Andreas Dilger <adilger@sun.com> Acked-by: NTrond Myklebust <Trond.Myklebust@netapp.com> Acked-by: NKyle McMartin <kyle@mcmartin.ca> Acked-by: NUlrich Drepper <drepper@redhat.com> Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NJan Kara <jack@suse.cz>
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- 06 12月, 2009 1 次提交
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由 David Daney 提交于
Use the new unreachable() macro instead of while(1); Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com> Acked-by: NRalf Baechle <ralf@linux-mips.org> CC: linux-mips@linux-mips.org Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 04 12月, 2009 1 次提交
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由 André Goddard Rosa 提交于
That is "success", "unknown", "through", "performance", "[re|un]mapping" , "access", "default", "reasonable", "[con]currently", "temperature" , "channel", "[un]used", "application", "example","hierarchy", "therefore" , "[over|under]flow", "contiguous", "threshold", "enough" and others. Signed-off-by: NAndré Goddard Rosa <andre.goddard@gmail.com> Signed-off-by: NJiri Kosina <jkosina@suse.cz>
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- 02 12月, 2009 3 次提交
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由 Arnaldo Carvalho de Melo 提交于
Reported-by: NJean-Mickael Guerin <jean-mickael.guerin@6wind.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com> Acked-by: NRalf Baechle <ralf@linux-mips.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Ralf Baechle 提交于
Thanks to Joseph S. Myers for reporting this. Signed-off-by: NRalf Baechle <ralf@linux-mips.org> Cc: "Joseph S. Myers" <joseph@codesourcery.com> Patchwork: http://patchwork.linux-mips.org/patch/723/
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由 Ralf Baechle 提交于
If __xchg() is not getting inlined the outline version of the function will have a reference to __xchg_called_with_bad_pointer() which does not exist remaining. Fixed by using BUILD_BUG_ON() to check for allowable operand sizes. Signed-off-by: NRalf Baechle <ralf@linux-mips.org> Patchwork: http://patchwork.linux-mips.org/patch/705/
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- 26 11月, 2009 1 次提交
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由 Ilya Loginov 提交于
Mtdblock driver doesn't call flush_dcache_page for pages in request. So, this causes problems on architectures where the icache doesn't fill from the dcache or with dcache aliases. The patch fixes this. The ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE symbol was introduced to avoid pointless empty cache-thrashing loops on architectures for which flush_dcache_page() is a no-op. Every architecture was provided with this flush pages on architectires where ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE is equal 1 or do nothing otherwise. See "fix mtd_blkdevs problem with caches on some architectures" discussion on LKML for more information. Signed-off-by: NIlya Loginov <isloginov@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Peter Horton <phorton@bitbox.co.uk> Cc: "Ed L. Cashin" <ecashin@coraid.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 14 11月, 2009 2 次提交
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由 Thomas Gleixner 提交于
Replace the MIPS functions of mult/shift factor calculation for clock events and clock sources with inline functions which call the generic functions. The minimum guaranteed conversion range is set to 4 seconds which corresponds to the current MIPS implementation. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Mikael Pettersson <mikpe@it.uu.se> Acked-by: NRalf Baechle <ralf@linux-mips.org> Acked-by: NLinus Walleij <linus.walleij@stericsson.com> Cc: John Stultz <johnstul@us.ibm.com> LKML-Reference: <20091111134229.807255074@linutronix.de>
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由 Yoichi Yuasa 提交于
The ohci-sm501 driver requires dma_declare_coherent_memory(). It is used by the driver's local memory allocation with dma_alloc_coherent(). Tested on TANBAC TB0287(VR4131 + SM501). [Ralf: Fixed reject in dma-default.c and removed the entire #if 0'ed block in dma-mapping.h instead of just the #if 0.] Signed-off-by: NYoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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- 02 11月, 2009 13 次提交
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由 Zhang Le 提交于
Loongson 2 does not have dcache aliases when is using 16k pages. and the And because Loongson 2 doesn't do SMP , cpu_icache_snoops_remote_store does not matter here. Signed-off-by: NZhang Le <r0bertz@gentoo.org> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Ralf Baechle 提交于
set_saved_sp reads Context register. Avoid reading stale value from earlier incomplete write. Issue found and fixed for head.S by Chris Dearman <chris@mips.com>. Signed-off-by: NChris Dearman <chris@mips.com> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Jaidev Patwardhan 提交于
Signed-off-by: NChris Dearman <chris@mips.com> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Chris Dearman 提交于
Signed-off-by: NChris Dearman <chris@mips.com> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Chris Dearman 提交于
Signed-off-by: NChris Dearman <chris@mips.com> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Kevin Cernekee 提交于
On an SMP system with cache aliases, the following sequence of events may happen: 1) copy_user_highpage() runs on CPU0, invoking kmap_coherent() to create a temporary mapping in the fixmap region 2) copy_page() starts on CPU0 3) CPU1 sends CPU0 an IPI asking CPU0 to run local_r4k_flush_cache_page() 4) CPU0 takes the interrupt, interrupting copy_page() 5) local_r4k_flush_cache_page() on CPU0 calls kmap_coherent() again 6) The second invocation of kmap_coherent() on CPU0 tries to use the same fixmap virtual address that was being used by copy_user_highpage() 7) CPU0 throws a machine check exception for the TLB address conflict Fixed by creating an extra set of fixmap entries for use in interrupt handlers. This prevents fixmap VA conflicts between copy_user_highpage() running in user context, and local_r4k_flush_cache_page() invoked from an SMP IPI. Signed-off-by: NKevin Cernekee <cernekee@gmail.com> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Florian Fainelli 提交于
This patch checks if the watchdog enable bit is set in the DCL register meaning that the hardware watchdog actually works and if so, register the ar7_wdt platform_device. Signed-off-by: NFlorian Fainelli <florian@openwrt.org> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Florian Fainelli 提交于
This patch removes the calls to bcm63xx_uart_register in board_bcm963xx.c and make bcm63xx_uart_register an initfunc. Allows us to remove bcm63xx_dev_uart.h which was there to make checkpatch.pl happy. Signed-off-by: NFlorian Fainelli <florian@openwrt.org> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Florian Fainelli 提交于
This patch fixes the following warning, which becomes an error due to -Werror to be turned on: CC arch/mips/alchemy/common/gpiolib-au1000.o cc1: warnings being treated as errors arch/mips/alchemy/common/gpiolib-au1000.c: In function 'au1100_gpio2_to_irq': /home/florian/dev/kernel/linux-queue/arch/mips/include/asm/mach-au1x00/gpio-au1000.h:107: warning: control reaches end of non-void function Signed-off-by: NFlorian Fainelli <florian@openwrt.org> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Ralf Baechle 提交于
Broken by 182a85f8. Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Ralf Baechle 提交于
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Ralf Baechle 提交于
We've silently been relying on the hardware chopping off excess, reserved ASID bits for no better reason that it saving an instruction. Because we already have: #define cpu_asid(cpu, mm) (cpu_context((cpu), (mm)) & ASID_MASK) in <asm/mmu_context.h>. We can use a cleanup to avoid writing non-zero bits into the reserved entryhi bits. This avoid triggering some debugging assertion in the Cavium simulator. Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Ralf Baechle 提交于
Some firmware may pass well over 256 bytes these days. Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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- 13 10月, 2009 1 次提交
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由 Neil Horman 提交于
Create a new socket level option to report number of queue overflows Recently I augmented the AF_PACKET protocol to report the number of frames lost on the socket receive queue between any two enqueued frames. This value was exported via a SOL_PACKET level cmsg. AFter I completed that work it was requested that this feature be generalized so that any datagram oriented socket could make use of this option. As such I've created this patch, It creates a new SOL_SOCKET level option called SO_RXQ_OVFL, which when enabled exports a SOL_SOCKET level cmsg that reports the nubmer of times the sk_receive_queue overflowed between any two given frames. It also augments the AF_PACKET protocol to take advantage of this new feature (as it previously did not touch sk->sk_drops, which this patch uses to record the overflow count). Tested successfully by me. Notes: 1) Unlike my previous patch, this patch simply records the sk_drops value, which is not a number of drops between packets, but rather a total number of drops. Deltas must be computed in user space. 2) While this patch currently works with datagram oriented protocols, it will also be accepted by non-datagram oriented protocols. I'm not sure if thats agreeable to everyone, but my argument in favor of doing so is that, for those protocols which aren't applicable to this option, sk_drops will always be zero, and reporting no drops on a receive queue that isn't used for those non-participating protocols seems reasonable to me. This also saves us having to code in a per-protocol opt in mechanism. 3) This applies cleanly to net-next assuming that commit 97775007 (my af packet cmsg patch) is reverted Signed-off-by: NNeil Horman <nhorman@tuxdriver.com> Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 01 10月, 2009 4 次提交
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由 Ralf Baechle 提交于
arch/mips/include/asm/unaligned.h: linux/unaligned/generic.h is included more than once. Entirely legitimate but just noise. Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Maxime Bizon 提交于
Signed-off-by: NMaxime Bizon <mbizon@freebox.fr> Reviewed-by: NWolfram Sang <w.sang@pengutronix.de> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Ralf Baechle 提交于
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Maxime Bizon 提交于
Signed-off-by: NMaxime Bizon <mbizon@freebox.fr> Acked-by: NGreg Kroah-Hartman <gregkh@suse.de> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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- 24 9月, 2009 1 次提交
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由 Rusty Russell 提交于
Makes code futureproof against the impending change to mm->cpu_vm_mask. It's also a chance to use the new cpumask_ ops which take a pointer (the older ones are deprecated, but there's no hurry for arch code). Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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