summaryrefslogtreecommitdiffstats
AgeCommit message (Collapse)Author
2008-03-17cxgb3: Fix transmit queue stop mechanismDivy Le Ray
The last change in the Tx queue stop mechanism opens a window where the Tx queue might be stopped after pending credits returned. Tx credits are returned via a control message generated by the HW. It returns tx credits on demand, triggered by a completion bit set in selective transmit packet headers. The current code can lead to the Tx queue stopped with all pending credits returned, and the current frame not triggering a credit return. The Tx queue will then never be awaken. The driver could alternatively request a completion for packets that stop the queue. It's however safer at this point to go back to the pre-existing behaviour. Signed-off-by: Divy Le Ray <divy@chelsio.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-03-17NEWEMAC: Add compatible "ibm,tah" to tah matching tableStefan Roese
Add "ibm,tah" to the compatible matching table of the ibm_newemac tah driver. The type "tah" is still preserved for compatibility reasons. New dts files should use the compatible property though. Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-03-17rndis_host: fix transfer size negotiationJean-Christophe Dubois
This patch should resolve a problem that's troubled support for some RNDIS peripherals. It seems to have boiled down to using a variable to establish transfer size limits before it was assigned, which caused those devices to fallback to a default "jumbogram" mode we don't support. Fix by assigning it earlier for RNDIS. Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net> [ cleanups ] Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-03-17NEWEMAC: fix support for pause packetsPravin M. Bathija
Problem Description and Fix --------------------------- When a pause packet(with destination as reserved Multicast address) is received by the EMAC hardware to control the flow of frames being transmitted by it, it is dropped by the hardware unless the reserved Multicast address is hashed in to the GAHT[1-4] registers. This code fix adds the default reserved multicast address to the GAHT[1-4] registers in the EMAC(s) present on the chip. The flow control with Pause packets will only work if the following register bits are programmed in EMAC: EMACx_MR1[APP] = 1 EMACx_RMR[BAE] = 1 EMACx_RMR[MAE] = 1 Behavior that may be observed in a running system ------------------------------------------------- A host transferring data from a PPC based system may send a Pause packet to the PPC EMAC requesting it to slow down the flow of packets. If the default reserved multicast MAC address is not programmed into the GAHT[1-4] registers this Pause packet will be dropped by PPC EMAC and no Flow Control will be done. Signed-off-by: Pravin M. Bathija <pbathija@amcc.com> Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-03-17virtio: fix race in enable_cbChristian Borntraeger
There is a race in virtio_net, dealing with disabling/enabling the callback. I saw the following oops: kernel BUG at /space/kvm/drivers/virtio/virtio_ring.c:218! illegal operation: 0001 [#1] SMP Modules linked in: sunrpc dm_mod CPU: 2 Not tainted 2.6.25-rc1zlive-host-10623-gd358142-dirty #99 Process swapper (pid: 0, task: 000000000f85a610, ksp: 000000000f873c60) Krnl PSW : 0404300180000000 00000000002b81a6 (vring_disable_cb+0x16/0x20) R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:0 CC:3 PM:0 EA:3 Krnl GPRS: 0000000000000001 0000000000000001 0000000010005800 0000000000000001 000000000f3a0900 000000000f85a610 0000000000000000 0000000000000000 0000000000000000 000000000f870000 0000000000000000 0000000000001237 000000000f3a0920 000000000010ff74 00000000002846f6 000000000fa0bcd8 Krnl Code: 00000000002b819a: a7110001 tmll %r1,1 00000000002b819e: a7840004 brc 8,2b81a6 00000000002b81a2: a7f40001 brc 15,2b81a4 >00000000002b81a6: a51b0001 oill %r1,1 00000000002b81aa: 40102000 sth %r1,0(%r2) 00000000002b81ae: 07fe bcr 15,%r14 00000000002b81b0: eb7ff0380024 stmg %r7,%r15,56(%r15) 00000000002b81b6: a7f13e00 tmll %r15,15872 Call Trace: ([<000000000fa0bcd0>] 0xfa0bcd0) [<00000000002b8350>] vring_interrupt+0x5c/0x6c [<000000000010ab08>] do_extint+0xb8/0xf0 [<0000000000110716>] ext_no_vtime+0x16/0x1a [<0000000000107e72>] cpu_idle+0x1c2/0x1e0 The problem can be triggered with a high amount of host->guest traffic. I think its the following race: poll says netif_rx_complete poll calls enable_cb enable_cb opens the interrupt mask a new packet comes, an interrupt is triggered----\ enable_cb sees that there is more work | enable_cb disables the interrupt | . V . interrupt is delivered . skb_recv_done does atomic napi test, ok some waiting disable_cb is called->check fails->bang! . poll would do napi check poll would do disable_cb The fix is to let enable_cb not disable the interrupt again, but expect the caller to do the cleanup if it returns false. In that case, the interrupt is only disabled, if the napi test_set_bit was successful. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (cleaned up doco)
2008-03-17virtio: Enable netpoll interface for netconsole loggingAmit Shah
Add a new poll_controller handler that the netpoll interface needs. This enables netconsole logging from a kvm guest over the virtio net interface. Signed-off-by: Amit Shah <amitshah@gmx.net> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-03-17virtio: handle > 2 billion page balloon targetsRusty Russell
If the host asks for a huge target towards_target() can overflow, and we up oops as we try to release more pages than we have. The simple fix is to use a 64-bit value. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-03-17virtio: Fix sysfs bits to have proper block symlinkJeremy Katz
Fix up so that the virtio_blk devices in sysfs link correctly to their block device. This then allows them to be detected by hal, etc Signed-off-by: Jeremy Katz <katzj@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-03-17virtio: Use spin_lock_irqsave/restore for virtio-pciAnthony Liguori
virtio-pci acquires its spin lock in an interrupt context so it's necessary to use spin_lock_irqsave/restore variants. This patch fixes guest SMP when using virtio devices in KVM. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-03-17drivers/net/atl1/atl1_main.c: remove unused variableJulia Lawall
The variable update_rx is initialized but never used otherwise. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ type T; identifier i; constant C; @@ ( extern T i; | - T i; <+... when != i - i = C; ...+> ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Acked-by: Jay Cliburn <jacliburn@bellsouth.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-03-17drivers/net/ipg.c: remove unused variableJulia Lawall
The variable gig is initialized but never used otherwise. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ type T; identifier i; constant C; @@ ( extern T i; | - T i; <+... when != i - i = C; ...+> ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-03-17epic100 endianness annotations and fixesAl Viro
* "powerpc or sparc" is not the same as "big-endian", fix the ifdef * since we tell the card to byteswap the descriptors on big-endian, we ought to leave them host-endian... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-03-17ipg fixAl Viro
spurious cpu_to_le64() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-03-17more misannotations: ne2k-pciAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-03-17fore2000 - fix misannotationsAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-03-17wan/farsync: copy_from_user() to iomem is wrongAl Viro
kmalloc intermediate buffer(), do copy_from_user() + memcpy_toio() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-03-17r6040 endianness fixesAl Viro
pci_unmap_single() on little-endian address Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-03-17relay: fix subbuf_splice_actor() adding too many pagesJens Axboe
If subbuf_pages was larger than the max number of pages the pipe buffer will hold, subbuf_splice_actor() would happily go beyond the array size. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-17The ps2esdi driver was marked as BROKEN more than two years ago due to beingAdrian Bunk
no longer working for some time. A driver that had been marked as BROKEN for such a long time seems to be unlikely to be revived in the forseeable future. But if anyone wants to ever revive this driver, the code is still present in the older kernel releases. Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: Alan Cox <alan@redhat.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-17drm/ati_pcigart: fix the PCIGART to use drm_pci to allocate GART table.Dave Airlie
This fixes a problem on 64-bit with 4GB with ATI RS690 chipsets. It makes sure the pcigart table is allocated in coherent memory for DMA operations. Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-03-17drm/radeon: fixup RV550 chip familyAlex Deucher
This fixes up the RV550 chips which are based on RV515, not RV530. It also adds another RS690 PCI ID. Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-03-17drm/via: attempt again to stabilise the AGP DMA command submission.Thomas Hellstrom
It's worth remembering that all new bright ideas on how to make this command reader work properly and according to docs will probably fail :( Bring in some old code. Also allow a larger SG-DMA download stride, and remove unnecessary waits for command regulators pauses. Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-03-17drm: Fix race that can lockup the kernelMike Isely
The i915_vblank_swap() function schedules an automatic buffer swap upon receipt of the vertical sync interrupt. Such an operation is lengthy so it can't be allowed to happen in normal interrupt context, thus the DRM implements this by scheduling the work in a kernel softirq-scheduled tasklet. In order for the buffer swap to work safely, the DRM's central lock must be taken, via a call to drm_lock_take() located in drivers/char/drm/drm_irq.c within the function drm_locked_tasklet_func(). The lock-taking logic uses a non-interrupt-blocking spinlock to implement the manipulations needed to take the lock. This semantic would be safe if all attempts to use the spinlock only happen from process context. However this buffer swap happens from softirq context which is really a form of interrupt context. Thus we have an unsafe situation, in that drm_locked_tasklet_func() can block on a spinlock already taken by a thread in process context which will never get scheduled again because of the blocked softirq tasklet. This wedges the kernel hard. To trigger this bug, run a dual-head cloned mode configuration which uses the i915 drm, then execute an opengl application which synchronizes buffer swaps against the vertical sync interrupt. In my testing, a lockup always results after running anywhere from 5 minutes to an hour and a half. I believe dual-head is needed to really trigger the problem because then the vertical sync interrupt handling is no longer predictable (due to being interrupt-sourced from two different heads running at different speeds). This raises the probability of the tasklet trying to run while the userspace DRI is doing things to the GPU (and manipulating the DRM lock). The fix is to change the relevant spinlock semantics to be the interrupt-blocking form. After this change I am no longer able to trigger the lockup; the longest test run so far was 20 hours (test stopped after that point). Note: I have examined the places where this spinlock is being employed; all are reasonably short bounded sequences and should be suitable for interrupts being blocked without impacting overall kernel interrupt response latency. Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-03-16Linux 2.6.25-rc6v2.6.25-rc6Linus Torvalds
2008-03-16Merge branch 'master' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6 * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6: [PARISC] make ptr_to_pide() static [PARISC] head.S: section mismatch fixes [PARISC] add back Crestone Peak cpu [PARISC] futex: special case cmpxchg NULL in kernel space [PARISC] clean up show_stack [PARISC] add pa8900 CPUs to hardware inventory [PARISC] clean up include/asm-parisc/elf.h [PARISC] move defconfig to arch/parisc/configs/ [PARISC] add back AD1889 MAINTAINERS entry [PARISC] pdc_console: fix bizarre panic on boot [PARISC] dump_stack in show_regs [PARISC] pdc_stable: fix compile errors [PARISC] remove unused pdc_iodc_printf function [PARISC] bump __NR_syscalls [PARISC] unbreak pgalloc.h [PARISC] move VMALLOC_* definitions to fixmap.h [PARISC] wire up timerfd syscalls [PARISC] remove old timerfd syscall
2008-03-15[PARISC] make ptr_to_pide() staticFUJITA Tomonori
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2008-03-15[PARISC] head.S: section mismatch fixesHelge Deller
- move boot_args[] into the init section - move $global$ into the read_mostly section - fix the following two section mismatches: WARNING: vmlinux.o(.text+0x9c): Section mismatch: reference to .init.text:start_kernel (between '$pgt_fill_loop' and '$is_pa20') WARNING: vmlinux.o(.text+0xa0): Section mismatch: reference to .init.text:start_kernel (between '$pgt_fill_loop' and '$is_pa20') Signed-off-by: Helge Deller <deller@gmx.de> SIgned-off-by: Kyle McMartin <kyle@mcmartin.ca>
2008-03-15[PARISC] add back Crestone Peak cpuKyle McMartin
Crestone Peak Slow is the 800MHz PA-8800 cpu in the C8000. 0x88B is probably the Crestone Peak Fast. Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
2008-03-15[PARISC] futex: special case cmpxchg NULL in kernel spaceKyle McMartin
Commit a0c1e9073ef7428a14309cba010633a6cd6719ea added code to futex.c to detect whether futex_atomic_cmpxchg_inatomic was implemented at run time: + curval = cmpxchg_futex_value_locked(NULL, 0, 0); + if (curval == -EFAULT) + futex_cmpxchg_enabled = 1; This is bogus on parisc, since page zero in kernel virtual space is the gateway page for syscall entry, and should not be read from the kernel. (That, and we really don't like the kernel faulting on its own address space...) Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
2008-03-15[PARISC] clean up show_stackKyle McMartin
When we show_regs, we obviously have a struct pt_regs of the calling frame. Use these in show_stack so we don't have the entire bogus call trace up to the show_stack call. Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
2008-03-15[PARISC] add pa8900 CPUs to hardware inventoryJames Bottomley
This patch adds the known pa8900 CPUs to the inventory list and removes the Crestone Peak one which apparently never escaped into the wild. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
2008-03-15[PARISC] clean up include/asm-parisc/elf.hRandolph Chung
Cleanup some cruft. No functionality changes. Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
2008-03-15[PARISC] move defconfig to arch/parisc/configs/Adrian Bunk
This patch moves the default parisc defconfig to arch/parisc/configs/generic_defconfig where it belongs and selects it as the default defconfig through KBUILD_DEFCONFIG. Signed-off-by: Adrian Bunk <adrian.bunk@movial.fi> Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
2008-03-15[PARISC] add back AD1889 MAINTAINERS entryThibaut VARENE
Signed-off-by: Thibaut VARENE <T-Bone@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
2008-03-15[PARISC] pdc_console: fix bizarre panic on bootKyle McMartin
Commit 721fdf34167580ff98263c74cead8871d76936e6 introduced a subtle bug by accidently removing the "static" from iodc_dbuf. This resulted in, what appeared to be, a trap without *current set to a task. Probably the result of a trap in real mode while calling firmware. Also do other misc clean ups. Since the only input from firmware is non blocking, share iodc_dbuf between input and output, and spinlock the only callers. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2008-03-15[PARISC] dump_stack in show_regsKyle McMartin
Originally, show_stack was used in BUG() output. However, a recent commit changed it to print register state (no idea what that's supposed to help, really...) and parisc was missing a backtrace because of it. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2008-03-15[PARISC] pdc_stable: fix compile errorsJoel Soete
Signed-off-by: Joel Soete <rubisher@scarlet.be> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2008-03-15[PARISC] remove unused pdc_iodc_printf functionKyle McMartin
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2008-03-15[PARISC] bump __NR_syscallsKyle McMartin
oops, forgot this in the previous commit. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2008-03-15[PARISC] unbreak pgalloc.hKyle McMartin
Commit 2f569afd9ced9ebec9a6eb3dbf6f83429be0a7b4 broke the compile rather spectacularly. Fix code errors. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2008-03-15[PARISC] move VMALLOC_* definitions to fixmap.hKyle McMartin
They make way more sense here, really... Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2008-03-15[PARISC] wire up timerfd syscallsKyle McMartin
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2008-03-15[PARISC] remove old timerfd syscallKyle McMartin
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2008-03-15ACPI: Remove ACPI_CUSTOM_DSDT_INITRD optionLinus Torvalds
This essentially reverts commit 71fc47a9adf8ee89e5c96a47222915c5485ac437 ("ACPI: basic initramfs DSDT override support"), because the code simply isn't ready. It did ugly things to the init sequence to populate the rootfs image early, but that just ended up showing other problems with the whole approach. The fact is, the VFS layer simply isn't initialized this early, and the relevant ACPI code should either run much later, or this shouldn't be done at all. For 2.6.25, we'll just pick the latter option. We can revisit this concept later if necessary. Cc: Dave Hansen <haveblue@us.ibm.com> Cc: Tilman Schmidt <tilman@imap.cc> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Thomas Renninger <trenn@suse.de> Cc: Eric Piel <eric.piel@tremplin-utc.net> Cc: Len Brown <len.brown@intel.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Markus Gaugusch <dsdt@gaugusch.at> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-15tifm_sd: DATA_CARRY is not boolean in tifm_sd_transfer_data()Roel Kluin
DATA_CARRY is not boolean Signed-off-by: Roel Kluin <12o3l@tiscali.nl> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: [NET]: Fix tbench regression in 2.6.25-rc1
2008-03-15sched: simplify sched_slice()Ingo Molnar
Use the existing calc_delta_mine() calculation for sched_slice(). This saves a divide and simplifies the code because we share it with the other /cfs_rq->load users. It also improves code size: text data bss dec hex filename 42659 2740 144 45543 b1e7 sched.o.before 42093 2740 144 44977 afb1 sched.o.after Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
2008-03-15sched: fix fair sleepersIngo Molnar
Fair sleepers need to scale their latency target down by runqueue weight. Otherwise busy systems will gain ever larger sleep bonus. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
2008-03-15sched: fix overload performance: buddy wakeupsPeter Zijlstra
Currently we schedule to the leftmost task in the runqueue. When the runtimes are very short because of some server/client ping-pong, especially in over-saturated workloads, this will cycle through all tasks trashing the cache. Reduce cache trashing by keeping dependent tasks together by running newly woken tasks first. However, by not running the leftmost task first we could starve tasks because the wakee can gain unlimited runtime. Therefore we only run the wakee if its within a small (wakeup_granularity) window of the leftmost task. This preserves fairness, but does alternate server/client task groups. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-03-15sched: fix calc_delta_mine()Ingo Molnar
lw->weight can be 0 for a short time during bootup. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-03-15 02:17:52 +0000