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2010-08-19Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: kprobes/x86: Fix the return address of multiple kretprobes perf tools: Fix build error on read only source. perf, x86: Fix Intel-nhm PMU programming errata workaround
2010-08-19mtd: nand: Fix regression in BBM detectionBrian Norris
Commit c7b28e25cb9beb943aead770ff14551b55fa8c79 ("mtd: nand: refactor BB marker detection") caused a regression in detection of factory-set bad block markers, especially for certain small-page NAND. This fix removes some unneeded constraints on using NAND_SMALL_BADBLOCK_POS, making the detection code more correct. This regression can be seen, for example, in Hynix HY27US081G1M and similar. Signed-off-by: Brian Norris <norris@broadcom.com> Tested-by: Michael Guntsche <mike@it-loops.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-19tracing: Fix timer tracingArjan van de Ven
PowerTOP would like to be able to trace timers. Unfortunately, the current timer tracing is not very useful: the actual timer function is not recorded in the trace at the start of timer execution. Although this is recorded for timer "start" time (when it gets armed), this is not useful; most timers get started early, and a tracer like PowerTOP will never see this event, but will only see the actual running of the timer. This patch just adds the function to the timer tracing; I've verified with PowerTOP that now it can get useful information about timers. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: xiaoguangrong@cn.fujitsu.com Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: <stable@kernel.org> # .35.x, .34.x, .33.x LKML-Reference: <4C6C5FA9.3000405@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-08-19kprobes/x86: Fix the return address of multiple kretprobesKUMANO Syuhei
Fix the return address of subsequent kretprobes when multiple kretprobes are set on the same function. For example: # cd /sys/kernel/debug/tracing # echo "r:event1 sys_symlink" > kprobe_events # echo "r:event2 sys_symlink" >> kprobe_events # echo 1 > events/kprobes/enable # ln -s /tmp/foo /tmp/bar (without this patch) # cat trace ln-897 [000] 20404.133727: event1: (kretprobe_trampoline+0x0/0x4c <- sys_symlink) ln-897 [000] 20404.133747: event2: (system_call_fastpath+0x16/0x1b <- sys_symlink) (with this patch) # cat trace ln-740 [000] 13799.491076: event1: (system_call_fastpath+0x16/0x1b <- sys_symlink) ln-740 [000] 13799.491096: event2: (system_call_fastpath+0x16/0x1b <- sys_symlink) Signed-off-by: KUMANO Syuhei <kumano.prog@gmail.com> Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> LKML-Reference: <1281853084.3254.11.camel@camp10-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-08-19Merge branch 'perf/urgent' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux-2.6 into perf/urgent
2010-08-19ll_temac: Fix poll implementationMichal Simek
Functions ll_temac_rx_irq and ll_temac_tx_irq have pointer to net_device as second parameter not pointer to temac_local. Signed-off-by: Michal Simek <monstr@monstr.eu> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-19netxen: fix a race in netxen_nic_get_stats()Eric Dumazet
Dont clear netdev->stats, it might give transient wrong values to concurrent stat readers. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-19qlnic: fix a race in qlcnic_get_stats()Eric Dumazet
Dont clear netdev->stats, it might give transient wrong values to concurrent stat readers. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-19irda: fix a race in irlan_eth_xmit()Eric Dumazet
After skb is queued, its illegal to dereference it. Cache skb->len into a temporary variable. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-19net: sh_eth: remove unused variableKuninori Morimoto
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-19netxen: update version 4.0.74Amit Kumar Salecha
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-19netxen: fix inconsistent lock stateAmit Kumar Salecha
Spin lock rds_ring->lock is used in poll routine, so other users should use spin_lock_bh(). While posting rx buffers from netxen_nic_attach, rds_ring->lock is not required, so cleaning it instead of fixing it by spin_lock_bh(). Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-19vlan: Match underlying dev carrier on vlan addPhil Oester
When adding a new vlan, if the underlying interface has no carrier, then the newly added vlan interface should also have no carrier. At present, this is not true - the newly added vlan is added with carrier up. Fix by checking state of real device. Signed-off-by: Phil Oester <kernel@linuxace.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-19ibmveth: Fix opps during MTU change on an active deviceRobert Jennings
This fixes the following opps which can occur when trying to deallocate receive buffer pools when changing the MTU of an active ibmveth device. Oops: Kernel access of bad area, sig: 11 [#1] NIP: d000000004db00e8 LR: d000000004db00ac CTR: 0000000000591038 REGS: c00000007fff39d0 TRAP: 0300 Not tainted (2.6.36-rc1) MSR: 8000000000009032 <EE,ME,IR,DR> CR: 22248244 XER: 00000002 DAR: 0000000000000488, DSISR: 0000000042000000 TASK = c00000007c463790[6531] 'netserver' THREAD: c00000007a154000 CPU: 0 GPR00: 0000000000000000 c00000007fff3c50 d000000004dbd360 0000000000000001 GPR04: 0000000000000001 1fffffffffffffff 000000000000043c c00000007a8e9f60 GPR08: c00000007a8e9e20 0000000000000245 0000000000000488 0000000000000000 GPR12: 00000000000000c0 c000000006d70000 c00000007bfec098 c00000007bfebc2c GPR16: c00000007a157c78 0000000000000000 0000000000000001 0000000000000000 GPR20: 0000000000000001 0000000000000010 c000000000b51180 c00000007a8e9d90 GPR24: c00000007a8e9da0 c00000007a8e9580 00000000000005ea 00000000000002ff GPR28: 0000000000000004 0000000000000080 c000000000a946f8 c00000007a8e9d80 NIP [d000000004db00e8] .ibmveth_remove_buffer_from_pool+0xe8/0x130 [ibmveth] LR [d000000004db00ac] .ibmveth_remove_buffer_from_pool+0xac/0x130 [ibmveth] Call Trace: [c00000007fff3c50] [d000000004db00ac] .ibmveth_remove_buffer_from_pool+0xac/0x130 [ibmveth] (unreliable) [c00000007fff3cf0] [d000000004db31dc] .ibmveth_poll+0x30c/0x460 [ibmveth] [c00000007fff3dd0] [c00000000042c4b8] .net_rx_action+0x178/0x278 [c00000007fff3eb0] [c000000000093cf0] .__do_softirq+0x118/0x1f8 [c00000007fff3f90] [c00000000002ab3c] .call_do_softirq+0x14/0x24 [c00000007a157600] [c00000000000e3e4] .do_softirq+0xec/0x110 [c00000007a1576a0] [c000000000093394] .local_bh_enable_ip+0xb4/0xe0 [c00000007a157720] [c0000000004f0bac] ._raw_spin_unlock_bh+0x3c/0x50 [c00000007a157790] [c0000000004186e0] .release_sock+0x158/0x188 [c00000007a157840] [c000000000479660] .tcp_recvmsg+0x560/0x9b8 [c00000007a157970] [c0000000004a0d78] .inet_recvmsg+0x80/0xd8 [c00000007a157a00] [c000000000413e28] .sock_recvmsg+0x128/0x178 [c00000007a157bf0] [c0000000004164ac] .SyS_recvfrom+0xb4/0x148 [c00000007a157d70] [c000000000411f3c] .SyS_socketcall+0x274/0x360 [c00000007a157e30] [c0000000000085b4] syscall_exit+0x0/0x40 Reported-by: Rafael Camarda Silva Folco <rfolco@linux.vnet.ibm.com> Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com> Acked-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-18ehea: Fix synchronization between HW and SW send queueAndre Detsch
ehea: Fix synchronization between HW and SW send queue When memory is added to / removed from a partition via the Memory DLPAR mechanism, the eHEA driver has to do a couple of things to reflect the memory change in its own IO address translation tables. This involves stopping and restarting the HW queues. During this operation, it is possible that HW and SW pointer into these queues get out of sync. This results in a situation where packets that are attached to a send queue are not transmitted immediately, but delayed until further X packets have been put on the queue. This patch detects such loss of synchronization, and resets the ehea port when needed. Signed-off-by: Jan-Bernd Themann <themann@de.ibm.com> Signed-off-by: Andre Detsch <adetsch@br.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-18bnx2x: Update bnx2x version to 1.52.53-4Yaniv Rosner
Update bnx2x version to 1.52.53-4 Signed-off-by: Yaniv Rosner <yanivr@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-18bnx2x: Fix PHY locking problemYaniv Rosner
PHY locking is required between two ports for some external PHYs. Since initialization was done in the common init function (called only on the first port initialization) rather than in the port init function, there was in fact no PHY locking between the ports. Signed-off-by: Yaniv Rosner <yanivr@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-18rds: fix a leak of kernel memoryEric Dumazet
struct rds_rdma_notify contains a 32 bits hole on 64bit arches, make sure it is zeroed before copying it to user. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-18netlink: fix compat recvmsgJohannes Berg
Since commit 1dacc76d0014a034b8aca14237c127d7c19d7726 Author: Johannes Berg <johannes@sipsolutions.net> Date: Wed Jul 1 11:26:02 2009 +0000 net/compat/wext: send different messages to compat tasks we had a race condition when setting and then restoring frag_list. Eric attempted to fix it, but the fix created even worse problems. However, the original motivation I had when I added the code that turned out to be racy is no longer clear to me, since we only copy up to skb->len to userspace, which doesn't include the frag_list length. As a result, not doing any frag_list clearing and restoring avoids the race condition, while not introducing any other problems. Additionally, while preparing this patch I found that since none of the remaining netlink code is really aware of the frag_list, we need to use the original skb's information for packet information and credentials. This fixes, for example, the group information received by compat tasks. Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: stable@kernel.org [2.6.31+, for 2.6.35 revert 1235f504aa] Signed-off-by: Johannes Berg <johannes.berg@intel.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-18netfilter: fix userspace header warningSam Ravnborg
"make headers_check" issued the following warning: CHECK include/linux/netfilter (64 files) usr/include/linux/netfilter/xt_ipvs.h:19: found __[us]{8,16,32,64} type without #include <linux/types.h> Fix this by as suggested including linux/types.h. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-18net: add Fast Ethernet driver for PXA168.Sachin Sanap
Signed-off-by: Sachin Sanap <ssanap@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-19ALSA: intel8x0: Mute External Amplifier by default for ThinkPad X31Daniel T Chen
BugLink: https://bugs.launchpad.net/bugs/619439 This ThinkPad model needs External Amplifier muted for audible playback, so set the inv_eapd quirk for it. Reported-and-tested-by: Dennis Bell <dennis.bell@parkerg.co.uk> Cc: <stable@kernel.org> Signed-off-by: Daniel T Chen <crimsun@ubuntu.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-08-19ALSA: hda - Fix build error with CONFIG_PROC_FS=nTakashi Iwai
hdmi_eld_update_pcm_info() must be always compiled in. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-08-19ALSA: hda - Add support for IDT 92HD89XX codecsCharles Chin
Just added new codec ids. These are almost compatible with existing ones. Signed-off-by: Charles Chin <Charles.Chin@idt.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-08-18sparc64: Make lock backoff really a NOP on UP builds.David S. Miller
As noticed by Mikulas Patocka, the backoff macros don't completely nop out for UP builds, we still get a branch always and a delay slot nop. Fix this by making the branch to the backoff spin loop selective, then we can nop out the spin loop completely. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-18sparc64: simple microoptimizations for atomic functionsMikulas Patocka
Simple microoptimizations for sparc64 atomic functions: Save one instruction by using a delay slot. Use %g1 instead of %g7, because %g1 is written earlier. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-18Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6Linus Torvalds
* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: NFS: Fix an Oops in the NFSv4 atomic open code NFS: Fix the selection of security flavours in Kconfig NFS: fix the return value of nfs_file_fsync() rpcrdma: Fix SQ size calculation when memreg is FRMR xprtrdma: Do not truncate iova_start values in frmr registrations. nfs: Remove redundant NULL check upon kfree() nfs: Add "lookupcache" to displayed mount options NFS: allow close-to-open cache semantics to apply to root of NFS filesystem SUNRPC: fix NFS client over TCP hangs due to packet loss (Bug 16494)
2010-08-18Merge 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: USB HID: Add ID for eGalax Multitouch used in JooJoo tablet HID: hiddev: fix memory corruption due to invalid intfdata HID: hiddev: protect against disconnect/NULL-dereference race HID: picolcd: correct ordering of framebuffer freeing HID: picolcd: testing the wrong variable
2010-08-18iwlwifi: use long monitor timer for 5300 seriesWey-Yi Guy
For 5000 series of devices, use long monitor timer to check stuck tx queues. This modification apply to all the 5000 series including 5300 and others. Cc: stable@kernel.org [2.6.35] Reported-by: drago01 <drago01@gmail.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-08-18drivers/net/wireless: Restore upper case words in wiphy_<level> messagesJoe Perches
Commit c96c31e499b70964cfc88744046c998bb710e4b8 "(drivers/net/wireless: Use wiphy_<level>)" inadvertently changed some upper case words to lower case. Restore the original case. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-08-18Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] Fix build error: conflicting types for ‘sys_execve’
2010-08-18drm/i915: make sure eDP PLL is enabled at the right timeJesse Barnes
We need to make sure the eDP PLL is enabled before the pipes or planes, so do it as part of the DP prepare mode set function. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2010-08-18drm/i915: fix VGA plane disable for Ironlake+Jesse Barnes
We need to use I/O port instructions to access VGA registers on Ironlake+, and it doesn't hurt on other platforms, so switch the VGA plane disable function over to using them. Move it to init time as well while we're at it, no need to repeatedly disable the VGA plane with every mode set and DPMS event. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2010-08-18drm/i915: eDP mode set sequence correctionsJesse Barnes
We should disable the panel first when shutting down an eDP link. And when turning one on, the panel needs to be enabled before link training or eDP I/O won't be enabled. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2010-08-18drm/i915: add panel reset workaroundJesse Barnes
Ironlake requires that we clear the reset panel bit during power sequences and restore it afterwards. Uncondtionally add code to do that since it should be harmless on SNB+. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2010-08-18x86-32: Fix dummy trampoline-related inline stubsH. Peter Anvin
Fix dummy inline stubs for trampoline-related functions when no trampolines exist (until we get rid of the no-trampoline case entirely.) Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: Joerg Roedel <joerg.roedel@amd.com> Cc: Borislav Petkov <borislav.petkov@amd.com> LKML-Reference: <4C6C294D.3030404@zytor.com>
2010-08-18Fix the declaration of sys_execve() in asm-generic/syscalls.hDavid Howells
Fix the declaration of sys_execve() in asm-generic/syscalls.h to have various consts applied to its pointers. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-18cifs: fix NULL pointer dereference in cifs_find_smb_sesJeff Layton
cifs_find_smb_ses assumes that the vol->password field is a valid pointer, but that's only the case if a password was passed in via the options string. It's possible that one won't be if there is no mount helper on the box. Reported-by: diabel <gacek-2004@wp.pl> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-08-18[IA64] Fix build error: conflicting types for ‘sys_execve’Tony Luck
arch/ia64/kernel/process.c:636: error: conflicting types for ‘sys_execve’ commit d7627467b7a8dd6944885290a03a07ceb28c10eb Make do_execve() take a const filename pointer Missed the declaration of sys_execve in the ia64 asm/unistd.h (perhaps because there is no reason for it to be there ... it might be a left over from the COMPAT code?). Just delete the conflicting version. Signed-off-by: Tony Luck <tony.luck@intel.com>
2010-08-18Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: fs: brlock vfsmount_lock fs: scale files_lock lglock: introduce special lglock and brlock spin locks tty: fix fu_list abuse fs: cleanup files_lock locking fs: remove extra lookup in __lookup_hash fs: fs_struct rwlock to spinlock apparmor: use task path helpers fs: dentry allocation consolidation fs: fix do_lookup false negative mbcache: Limit the maximum number of cache entries hostfs ->follow_link() braino hostfs: dumb (and usually harmless) tpyo - strncpy instead of strlcpy remove SWRITE* I/O types kill BH_Ordered flag vfs: update ctime when changing the file's permission by setfacl cramfs: only unlock new inodes fix reiserfs_evict_inode end_writeback second call
2010-08-18mmc: build fix: mmc_pm_notify is only available with CONFIG_PM=yUwe Kleine-König
This fixes a build breakage introduced by commit 4c2ef25fe0b8 ("mmc: fix all hangs related to mmc/sd card insert/removal during suspend/resume") Cc: David Brownell <david-b@pacbell.net> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: linux-mmc@vger.kernel.org Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Acked-by: Maxim Levitsky <maximlevitsky@gmail.com> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-18perf tools: Fix build error on read only source.Kusanagi Kouichi
Parts of the build process were generating files outside the specified O= directory, causing the build to fail on systems where the sources are in a read only file system. Fix it by using $(OUTPUT) on these locations. Also check that $(OUTPUT) actually exists, just like the top level kernel Makefile does. Otherwise the failure message emitted is completely misleading. Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <20100817140841.0859362C03A@msa106.auone-net.jp> Signed-off-by: Kusanagi Kouichi <slash@ac.auone-net.jp> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-08-18Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf tools: Fix build on POSIX shells latencytop: Fix kconfig dependency warnings perf annotate tui: Fix exit and RIGHT keys handling tracing: Sanitize value returned from write(trace_marker, "...", len) tracing/events: Convert format output to seq_file tracing: Extend recordmcount to better support Blackfin mcount tracing: Fix ring_buffer_read_page reading out of page boundary tracing: Fix an unallocated memory access in function_graph
2010-08-18Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: ALSA: emu10k1 - delay the PCM interrupts (add pcm_irq_delay parameter) ALSA: hda - Fix ALC680 base model capture ASoC: Remove DSP mode support for WM8776 ALSA: hda - Add quirk for Dell Vostro 1220 ALSA: riptide - Fix detection / load of firmware files
2010-08-18Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68knommu: include sched.h in ColdFire/SPI driver m68knommu: formatting of pointers in printk() m68knommu: arch/m68k/include/asm/ide.h fix for nommu
2010-08-18Merge branch 'for-linus' of git://neil.brown.name/mdLinus Torvalds
* 'for-linus' of git://neil.brown.name/md: md raid-1/10 Fix bio_rw bit manipulations again md: provide appropriate return value for spare_active functions. md: Notify sysfs when RAID1/5/10 disk is In_sync. Update recovery_offset even when external metadata is used.
2010-08-18Merge branch 'merge-devicetree' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds
* 'merge-devicetree' of git://git.secretlab.ca/git/linux-2.6: spi.h: missing kernel-doc notation, please fix of: fix missing headers for of_address_to_resource() in MTD and SysACE drivers of: Fix missing includes ata: update for of_device to platform_device replacement microblaze: Fix of: eliminate of_device->node and dev_archdata->{of,prom}_node microblaze: Fix of/address: Merge all of the bus translation code booting-without-of: Remove nonexistent chapters from TOC, fix numbering
2010-08-18x86-32: Separate 1:1 pagetables from swapper_pg_dirJoerg Roedel
This patch fixes machine crashes which occur when heavily exercising the CPU hotplug codepaths on a 32-bit kernel. These crashes are caused by AMD Erratum 383 and result in a fatal machine check exception. Here's the scenario: 1. On 32-bit, the swapper_pg_dir page table is used as the initial page table for booting a secondary CPU. 2. To make this work, swapper_pg_dir needs a direct mapping of physical memory in it (the low mappings). By adding those low, large page (2M) mappings (PAE kernel), we create the necessary conditions for Erratum 383 to occur. 3. Other CPUs which do not participate in the off- and onlining game may use swapper_pg_dir while the low mappings are present (when leave_mm is called). For all steps below, the CPU referred to is a CPU that is using swapper_pg_dir, and not the CPU which is being onlined. 4. The presence of the low mappings in swapper_pg_dir can result in TLB entries for addresses below __PAGE_OFFSET to be established speculatively. These TLB entries are marked global and large. 5. When the CPU with such TLB entry switches to another page table, this TLB entry remains because it is global. 6. The process then generates an access to an address covered by the above TLB entry but there is a permission mismatch - the TLB entry covers a large global page not accessible to userspace. 7. Due to this permission mismatch a new 4kb, user TLB entry gets established. Further, Erratum 383 provides for a small window of time where both TLB entries are present. This results in an uncorrectable machine check exception signalling a TLB multimatch which panics the machine. There are two ways to fix this issue: 1. Always do a global TLB flush when a new cr3 is loaded and the old page table was swapper_pg_dir. I consider this a hack hard to understand and with performance implications 2. Do not use swapper_pg_dir to boot secondary CPUs like 64-bit does. This patch implements solution 2. It introduces a trampoline_pg_dir which has the same layout as swapper_pg_dir with low_mappings. This page table is used as the initial page table of the booting CPU. Later in the bringup process, it switches to swapper_pg_dir and does a global TLB flush. This fixes the crashes in our test cases. -v2: switch to swapper_pg_dir right after entering start_secondary() so that we are able to access percpu data which might not be mapped in the trampoline page table. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> LKML-Reference: <20100816123833.GB28147@aftab> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2010-08-18x86, cpu: Fix regression in AMD errata checking codeHans Rosenfeld
A bug in the family-model-stepping matching code caused the presence of errata to go undetected when OSVW was not used. This causes hangs on some K8 systems because the E400 workaround is not enabled. Signed-off-by: Hans Rosenfeld <hans.rosenfeld@amd.com> LKML-Reference: <1282141190-930137-1-git-send-email-hans.rosenfeld@amd.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2010-08-19nilfs2: wait for discard to finishRyusuke Konishi
nilfs_discard_segment() doesn't wait for completion of discard requests. This specifies BLKDEV_IFL_WAIT flag when calling blkdev_issue_discard() in order to fix the sync failure. Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Cc: Christoph Hellwig <hch@lst.de>
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