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2007-11-02Deadline iosched: Reset batch for ordered requestsAaron Carroll
The deadline I/O scheduler does not reset the batch count when starting a new batch at a higher-sectored request. This means the second and subsequent batch in the same data direction will never exceed a single request in size whenever higher-sectored requests are pending. This patch gives new batches in the same data direction as old ones their full quota of requests by resetting the batch count. Signed-off-by: Aaron Carroll <aaronc@gelato.unsw.edu.au> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-11-02Deadline iosched: Factor out finding latter requesAaron Carroll
Factor finding the next request in sector-sorted order into a function deadline_latter_request. Signed-off-by: Aaron Carroll <aaronc@gelato.unsw.edu.au> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-11-02[SG] Get rid of __sg_mark_end()Jens Axboe
sg_mark_end() overwrites the page_link information, but all users want __sg_mark_end() behaviour where we just set the end bit. That is the most natural way to use the sg list, since you'll fill it in and then mark the end point. So change sg_mark_end() to only set the termination bit. Add a sg_magic debug check as well, and clear a chain pointer if it is set. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-11-02cleanup asm/scatterlist.h includesAdrian Bunk
Not architecture specific code should not #include <asm/scatterlist.h>. This patch therefore either replaces them with #include <linux/scatterlist.h> or simply removes them if they were unused. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-11-02SG: Make sg_init_one() use general table init functionsJens Axboe
Don't open code sg_init_one(), make it reuse sg_init_table(). Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-11-02sh64: Update defconfigs.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-11-02sh: Update r7785rp defconfig.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-11-02sh: mach-type updates.Paul Mundt
This adds in the x3proto and magicpanelr2 mach types, plugs in highlander and rts7751r2d groups, and also hooks up the r2d subtypes. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-11-02sh: Fix up r7780rp highlander CF access size.Paul Mundt
R7780RP can't do byte-sized accesses to CF, so needs to do word sized access with low-byte masking. This same problem exists on older versions of the R2D, with the same workaround having been implemented in 43f4b8c7578b928892b6f01d374346ae14e5eb70 there. Follow that change for the highlander boards. This does not impact R7780MP or SH7785 based Highlander modules. If you're unfortunate enough to be stuck with an R7780RP, this patch is for you! Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-11-02sh: Terminate .eh_frame in VDSO with a 4-byte 0.Kaz Kojima
It's assumed that .eh_frame is terminated with 4-byte 0 in shared libraries and executable. It seems to be the case for VDSOs too. Without this terminator, I saw failures when unwinding from VDSO, though I don't know how other architectures handle this issue. For the normal libs, crtendS.o gives this terminator. We can use such terminating objects. Or we can add a 4-byte 0 with modifying the linker script like as the patch below. Signed-off-by: Kaz Kojima <kkojima@rr.iij4u.or.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-11-02sh: Correct SUBARCH matching.Paul Mundt
When configuring the kernel natively the uname matching is off, so fix up the uname mangling to get the proper SUBARCH. Needs an explicit range so that SH-5 doesn't break. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-11-02sh: Decouple 4k and soft/hardirq stacks.Paul Mundt
While using separate IRQ stacks can cut down on stack consumption, many users can also use 4k stacks directly without the additional need of separate stacks for soft and hardirqs. With this split, we support the same rationale for 4KSTACKS as m68knommu, with the IRQSTACKS abstraction as per ppc64. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-11-02sh: Fix optimized __copy_user() movca.l usage.Stuart Menefy
movca.l is restricted to SH-4 and up only, though compilers that are unable to support ISA tuning (especially older versions of binutils) will happily compile in the bogus opcode on older parts. Conditionalize it to fix SH-3 regressions noted by Kristoffer. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-11-02Merge branch 'linux-2.6' into mergePaul Mackerras
2007-11-01Input: inport, logibm - use KERN_INFO when reporting missing mouseHelge Deller
Many mouse drivers are often compiled (e.g. in Linux distributions) into the kernel at the same time just to make sure that at least one driver will suceed in find it's mouse device. Nevertheless, only the inport and logitech busmouse mouse drivers report with KERN_ERR log level if the mouse wasn't found. They should use KERN_INFO instead, because it's not an error if the mouse isn't attached at all. Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-11-01Input: appletouch - idle reset logic broke older FountainsDmitry Torokhov
Fountains do not support change mode request and therefore should be excluded from idle reset attempts. Also: - do not re-submit URB when we decide that touchpad needs to be reinicialized - do not repeat size detection when reinitializing the touchpad - Add missing KERN_* prefixes to messages Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Acked-by: Johannes Berg <johannes@sipsolutions.net>
2007-11-01Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: HID: Don't access input_dev->private directly HID: fix hidinput_connect ignoring retval from input_register_device HID: hiddev - fix compiler warning HID: Add GoTop tablets to blacklist
2007-11-01Merge branch 'upstream-linus' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: Fix myri10ge NAPI oops & warnings Fix region size check in mpc5200 FEC driver mpc5200: Fix Kconfig dependancies on MPC5200 FEC device driver
2007-11-01Fix myri10ge NAPI oops & warningsAndrew Gallatin
When testing the myri10ge driver with 2.6.24-rc1, I found that the machine crashed under heavy load: Unable to handle kernel paging request at 0000000000100108 RIP: [<ffffffff803cc8dd>] net_rx_action+0x11b/0x184 The address corresponds to the list_move_tail() in netif_rx_complete(): if (unlikely(work == weight)) list_move_tail(&n->poll_list, list); Eventually, I traced the crashes to calling netif_rx_complete() with work_done == budget. From looking at other drivers, it appears that one should only call netif_rx_complete() when work_done < budget. To fix it, I changed the test in myri10ge_poll() so that it refers to to work_done rather than looking at the rx ring status. If work_done is < budget, then that implies we have no more packets to process. Any races will be resolved by the NIC when the write to irq_claim is made. In myri10ge_clean_rx_done(), if we ever exceeded our budget, it would report a work_done one larger than was acutally done. This is because the increment was done in the conditional, so work_done would be incremented regardless of whether or not the test passed or failed. This would lead to the WARN_ON_ONCE(work > weight); warning in net_rx_action triggering. I've moved the increment of work_done inside the loop. Note that this would only be a problem when we had exceeded our budget. Signed off by: Andrew Gallatin <gallatin@myri.com> Andrew Gallatin Myricom Inc Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-11-01Fix region size check in mpc5200 FEC driverGrant Likely
Driver shouldn't complain if the register range is larger than what it expects. This works around failures with some device trees. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-11-01mpc5200: Fix Kconfig dependancies on MPC5200 FEC device driverGrant Likely
When not building an arch/powerpc kernel, the mpc5200 FEC driver depends on some symbols which are not defined (BESTCOMM & BESTCOMM_FEC). This patch flips around the dependancy logic so that it cannot be selected unless BESTCOMM_FEC is selected first. Kconfig stops complaining this way. Also, the driver only works for arch/powerpc (not arch/ppc) anyway so it should depend on PPC_MERGE also. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-11-01Merge branch 'master' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 * 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [IRDA] IRNET: Fix build when TCGETS2 is defined. [NET]: docbook fixes for netif_ functions [NET]: Hide the net_ns kmem cache [NET]: Mark the setup_net as __net_init [NET]: Hide the dead code in the net_namespace.c [NET]: Relax the reference counting of init_net_ns [NETNS]: Make the init/exit hooks checks outside the loop [NET]: Forget the zero_it argument of sk_alloc() [NET]: Remove bogus zero_it argument from sk_alloc [NET]: Make the sk_clone() lighter [NET]: Move some core sock setup into sk_prot_alloc [NET]: Auto-zero the allocated sock object [NET]: Cleanup the allocation/freeing of the sock object [NET]: Move the get_net() from sock_copy() [NET]: Move the sock_copy() from the header [TCP]: Another TAGBITS -> SACKED_ACKED|LOST conversion [TCP]: Process DSACKs that reside within a SACK block
2007-11-01[CIFS] If no Access Control Entries, set mode perm bits to zeroSteve French
Also clean up ACL code Acked-by: Shirish Pargaonkar <shirishp@us.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-11-01[POWERPC] 4xx: Fix Walnut DTS interrupt propertySteven A. Falco
Re-order the EMAC interrupts in the walnut.dts file so that they are mapped correctly. Signed-off-by: Steve Falco <sfalco at harris.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-11-01[POWERPC] ppc405 Fix arithmatic rollover bug when memory size under 16MGrant Likely
mmu_mapin_ram() loops over total_lowmem to setup page tables. However, if total_lowmem is less that 16M, the subtraction rolls over and results in a number just under 4G (because total_lowmem is an unsigned value). This patch rejigs the loop from countup to countdown to eliminate the bug. Special thanks to Magnus Hjorth who wrote the original patch to fix this bug. This patch improves on his by making the loop code simpler (which also eliminates the possibility of another rollover at the high end) and also applies the change to arch/powerpc. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-11-01[POWERPC] 4xx: Deal with 44x virtually tagged icacheBenjamin Herrenschmidt
The 44x family has an interesting "feature" which is a virtually tagged instruction cache (yuck !). So far, we haven't dealt with it properly, which means we've been mostly lucky or people didn't report the problems, unless people have been running custom patches in their distro... This is an attempt at fixing it properly. I chose to do it by setting a global flag whenever we change a PTE that was previously marked executable, and flush the entire instruction cache upon return to user space when that happens. This is a bit heavy handed, but it's hard to do more fine grained flushes as the icbi instruction, on those processor, for some very strange reasons (since the cache is virtually mapped) still requires a valid TLB entry for reading in the target address space, which isn't something I want to deal with. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-11-01[POWERPC] 4xx: Fix 4xx flush_tlb_page()Benjamin Herrenschmidt
On 4xx CPUs, the current implementation of flush_tlb_page() uses a low level _tlbie() assembly function that only works for the current PID. Thus, invalidations caused by, for example, a COW fault triggered by get_user_pages() from a different context will not work properly, causing among other things, gdb breakpoints to fail. This patch adds a "pid" argument to _tlbie() on 4xx processors, and uses it to flush entries in the right context. FSL BookE also gets the argument but it seems they don't need it (their tlbivax form ignores the PID when invalidating according to the document I have). Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-11-01[POWERPC] allocation fix in ppc/platforms/4xx/luan.cRoel Kluin
Don't allocate hose2 when when hose1 can't be allocated and free hose1 when hose2 can't be allocated. Signed-off-by: Roel Kluin <12o3l@tiscali.nl> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-11-01[POWERPC] 4xx: Workaround for the 440EP(x)/GR(x) processors identical PVR issue.Valentine Barshak
PowerPC 440EP(x) 440GR(x) processors have the same PVR values, since they have identical cores. However, FPU is not supported on GR(x) and enabling APU instruction broadcast in the CCR0 register (to enable FPU) may cause unpredictable results. There's no safe way to detect FPU support at runtime. This patch provides a workarund for the issue. We use a POWER6 "logical PVR approach". First, we identify all EP(x) and GR(x) processors as GR(x) ones (which is safe). Then we check the device tree cpu path. If we have a EP(x) processor entry, we call identify_cpu again with PVR | 0x8. This bit is always 0 in the real PVR. This way we enable FPU only for 440EP(x). Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-11-01[POWERPC] Uartlite: speed up console outputGrant Likely
Change the wait_tx routine to call cpu_relax() instead of udelay() to reduce console output latency and test for the TXFULL bit instead of TXEMPTY. That way the FIFO doesn't need to by 100% flushed before writing the next character. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-11-01[POWERPC] Device tree bindings for Xilinx devicesGrant Likely
Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-11-01[POWERPC] bootwrapper: Bail from script if any command failsGrant Likely
Add the 'set -e' command to the wrapper script so that if any command fails then the script will automatically exit Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-11-01[POWERPC] bootwrapper: Allow wrapper script to execute verboselyGrant Likely
Allow wrapper script to print verbose progress when the V is set in the environment. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-11-01[SPARC64]: Update defconfig.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-01[IRDA] IRNET: Fix build when TCGETS2 is defined.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-01[NET]: docbook fixes for netif_ functionsStephen Hemminger
Documentation updates for network interfaces. 1. Add doc for netif_napi_add 2. Remove doc for unused returns from netif_rx 3. Add doc for netif_receive_skb [ Incorporated minor mods from Randy Dunlap -DaveM ] Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-01[NET]: Hide the net_ns kmem cachePavel Emelyanov
This cache is only required to create new namespaces, but we won't have them in CONFIG_NET_NS=n case. Hide it under the appropriate ifdef. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-01[NET]: Mark the setup_net as __net_initPavel Emelyanov
The setup_net is called for the init net namespace only (int the CONFIG_NET_NS=n of course) from the __init function, so mark it as __net_init to disappear with the caller after the boot. Yet again, in the perfect world this has to be under #ifdef CONFIG_NET_NS, but it isn't guaranteed that every subsystem is registered *after* the init_net_ns is set up. After we are sure, that we don't start registering them before the init net setup, we'll be able to move this code under the ifdef. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-01[NET]: Hide the dead code in the net_namespace.cPavel Emelyanov
The namespace creation/destruction code is never called if the CONFIG_NET_NS is n, so it's OK to move it under appropriate ifdef. The copy_net_ns() in the "n" case checks for flags and returns -EINVAL when new net ns is requested. In a perfect world this stub must be in net_namespace.h, but this function need to know the CLONE_NEWNET value and thus requires sched.h. On the other hand this header is to be injected into almost every .c file in the networking code, and making all this code depend on the sched.h is a suicidal attempt. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-01[NET]: Relax the reference counting of init_net_nsPavel Emelyanov
When the CONFIG_NET_NS is n there's no need in refcounting the initial net namespace. So relax this code by making a stupid stubs for the "n" case. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-01[NETNS]: Make the init/exit hooks checks outside the loopPavel Emelyanov
When the new pernet something (subsys, device or operations) is being registered, the init callback is to be called for each namespace, that currently exitst in the system. During the unregister, the same is to be done with the exit callback. However, not every pernet something has both calls, but the check for the appropriate pointer to be not NULL is performed inside the for_each_net() loop. This is (at least) strange, so tune this. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-01[NET]: Forget the zero_it argument of sk_alloc()Pavel Emelyanov
Finally, the zero_it argument can be completely removed from the callers and from the function prototype. Besides, fix the checkpatch.pl warnings about using the assignments inside if-s. This patch is rather big, and it is a part of the previous one. I splitted it wishing to make the patches more readable. Hope this particular split helped. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-01[NET]: Remove bogus zero_it argument from sk_allocPavel Emelyanov
At this point nobody calls the sk_alloc(() with zero_it == 0, so remove unneeded checks from it. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-01[NET]: Make the sk_clone() lighterPavel Emelyanov
The sk_prot_alloc() already performs all the stuff needed by the sk_clone(). Besides, the sk_prot_alloc() requires almost twice less arguments than the sk_alloc() does, so call the sk_prot_alloc() saving the stack a bit. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-01[NET]: Move some core sock setup into sk_prot_allocPavel Emelyanov
The security_sk_alloc() and the module_get is a part of the object allocations - move it in the proper place. Note, that since we do not reset the newly allocated sock in the sk_alloc() (memset() is removed with the previous patch) we can safely do this. Also fix the error path in sk_prot_alloc() - release the security context if needed. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-01[NET]: Auto-zero the allocated sock objectPavel Emelyanov
We have a __GFP_ZERO flag that allocates a zeroed chunk of memory. Use it in the sk_alloc() and avoid a hand-made memset(). This is a temporary patch that will help us in the nearest future :) Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-01[NET]: Cleanup the allocation/freeing of the sock objectPavel Emelyanov
The sock object is allocated either from the generic cache with the kmalloc, or from the proc->slab cache. Move this logic into an isolated set of helpers and make the sk_alloc/sk_free look a bit nicer. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-01[NET]: Move the get_net() from sock_copy()Pavel Emelyanov
The sock_copy() is supposed to just clone the socket. In a perfect world it has to be just memcpy, but we have to handle the security mark correctly. All the extra setup must be performed in sk_clone() call, so move the get_net() into more proper place. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-01[NET]: Move the sock_copy() from the headerPavel Emelyanov
The sock_copy() call is not used outside the sock.c file, so just move it into a sock.c Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-01[TCP]: Another TAGBITS -> SACKED_ACKED|LOST conversionIlpo Järvinen
Similar to commit 3eec0047d9bdd, point of this is to avoid skipping R-bit skbs. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>