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2009-12-02core: Clean up user return notifers use of per_cpuAvi Kivity
Instead of using per_cpu(..., raw_smp_processor_id()), use __get_cpu_var(...). Signed-off-by: Avi Kivity <avi@redhat.com> LKML-Reference: <1259578491-4589-1-git-send-email-avi@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-29core: Fix user return notifier on fork()Avi Kivity
fork() clones all thread_info flags, including TIF_USER_RETURN_NOTIFY; if the new task is first scheduled on a cpu which doesn't have user return notifiers set, this causes user return notifiers to trigger without any way of clearing itself. This is easy to trigger with a forky workload on the host in parallel with kvm, resulting in a cpu in an endless loop on the verge of returning to userspace. Fix by dropping the TIF_USER_RETURN_NOTIFY immediately after fork. Signed-off-by: Avi Kivity <avi@redhat.com> LKML-Reference: <1259505288-16559-1-git-send-email-avi@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-02x86: Fix user return notifier put_cpu_var() invocationStephen Rothwell
Today's linux-next build (x86_64 allmodconfig) failed like this: kernel/user-return-notifier.c: In function 'fire_user_return_notifiers': kernel/user-return-notifier.c:45: error: expected expression before ')' token Introduced by commit 7c68af6e32c73992bad24107311f3433c89016e2 ("core, x86: Add user return notifiers") from the tip and kvm trees but revealed by commit e0fdb0e050eae331046385643618f12452aa7e73 ("percpu: add __percpu for sparse") from the percpu tree. Before that percpu tree commit, "put_cpu_var()" would compile without error (even though it really needs a parameter). Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Avi Kivity <avi@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tejun Heo <tj@kernel.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Christoph Lameter <cl@linux-foundation.org> LKML-Reference: <20091102161722.eea4358d.sfr@canb.auug.org.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-25x86: Fix user return notifier buildAvi Kivity
When CONFIG_USER_RETURN_NOTIFIER is set, we need to link kernel/user-return-notifier.o. Signed-off-by: Avi Kivity <avi@redhat.com> LKML-Reference: <1256473485-23109-1-git-send-email-avi@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-01core, x86: Add user return notifiersAvi Kivity
Add a general per-cpu notifier that is called whenever the kernel is about to return to userspace. The notifier uses a thread_info flag and existing checks, so there is no impact on user return or context switch fast paths. This will be used initially to speed up KVM task switching by lazily updating MSRs. Signed-off-by: Avi Kivity <avi@redhat.com> LKML-Reference: <1253342422-13811-1-git-send-email-avi@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-09-30Merge 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: ax25: Fix possible oops in ax25_make_new net: restore tx timestamping for accelerated vlans Phonet: fix mutex imbalance sit: fix off-by-one in ipip6_tunnel_get_prl net: Fix sock_wfree() race net: Make setsockopt() optlen be unsigned.
2009-09-30ax25: Fix possible oops in ax25_make_newJarek Poplawski
In ax25_make_new, if kmemdup of digipeat returns an error, there would be an oops in sk_free while calling sk_destruct, because sk_protinfo is NULL at the moment; move sk->sk_destruct initialization after this. BTW of reported-by: Bernard Pidoux F6BVP <f6bvp@free.fr> Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-30net: restore tx timestamping for accelerated vlansEric Dumazet
Since commit 9b22ea560957de1484e6b3e8538f7eef202e3596 ( net: fix packet socket delivery in rx irq handler ) We lost rx timestamping of packets received on accelerated vlans. Effect is that tcpdump on real dev can show strange timings, since it gets rx timestamps too late (ie at skb dequeueing time, not at skb queueing time) 14:47:26.986871 IP 192.168.20.110 > 192.168.20.141: icmp 64: echo request seq 1 14:47:26.986786 IP 192.168.20.141 > 192.168.20.110: icmp 64: echo reply seq 1 14:47:27.986888 IP 192.168.20.110 > 192.168.20.141: icmp 64: echo request seq 2 14:47:27.986781 IP 192.168.20.141 > 192.168.20.110: icmp 64: echo reply seq 2 14:47:28.986896 IP 192.168.20.110 > 192.168.20.141: icmp 64: echo request seq 3 14:47:28.986780 IP 192.168.20.141 > 192.168.20.110: icmp 64: echo reply seq 3 Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-30Phonet: fix mutex imbalanceRémi Denis-Courmont
From: Rémi Denis-Courmont <remi.denis-courmont@nokia.com> port_mutex was unlocked twice. Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-30sit: fix off-by-one in ipip6_tunnel_get_prlSascha Hlusiak
When requesting all prl entries (kprl.addr == INADDR_ANY) and there are more prl entries than there is space passed from userspace, the existing code would always copy cmax+1 entries, which is more than can be handled. This patch makes the kernel copy only exactly cmax entries. Signed-off-by: Sascha Hlusiak <contact@saschahlusiak.de> Acked-By: Fred L. Templin <Fred.L.Templin@boeing.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-30net: Fix sock_wfree() raceEric Dumazet
Commit 2b85a34e911bf483c27cfdd124aeb1605145dc80 (net: No more expensive sock_hold()/sock_put() on each tx) opens a window in sock_wfree() where another cpu might free the socket we are working on. A fix is to call sk->sk_write_space(sk) while still holding a reference on sk. Reported-by: Jike Song <albcamus@gmail.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-30net: Make setsockopt() optlen be unsigned.David S. Miller
This provides safety against negative optlen at the type level instead of depending upon (sometimes non-trivial) checks against this sprinkled all over the the place, in each and every implementation. Based upon work done by Arjan van de Ven and feedback from Linus Torvalds. Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-30Merge branch 'sched-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sched_clock: Fix atomicity/continuity bug by using cmpxchg64() x86: Provide an alternative() based cmpxchg64()
2009-09-30sched_clock: Fix atomicity/continuity bug by using cmpxchg64()Eric Dumazet
Commit def0a9b2573 (sched_clock: Make it NMI safe) assumed cmpxchg() of 64bit values was available on X86_32. That is not so - and causes some subtle scheduler misbehavior due to incorrect timestamps off to up by ~4 seconds. Two symptoms are known right now: - interactivity problems seen by Arjan: up to 600 msecs latencies instead of the expected 20-40 msecs. These latencies are very visible on the desktop. - incorrect CPU stats: occasionally too high percentages in 'top', and crazy CPU usage stats. Reported-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: John Stultz <johnstul@us.ibm.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20090930170754.0886ff2e@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-30x86: Provide an alternative() based cmpxchg64()Arjan van de Ven
cmpxchg64() today generates, to quote Linus, "barf bag" code. cmpxchg64() is about to get used in the scheduler to fix a bug there, but it's a prerequisite that cmpxchg64() first be made non-sucking. This patch turns cmpxchg64() into an efficient implementation that uses the alternative() mechanism to just use the raw instruction on all modern systems. Note: the fallback is NOT smp safe, just like the current fallback is not SMP safe. (Interested parties with i486 based SMP systems are welcome to submit fix patches for that.) Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> [ fixed asm constraint bug ] Fixed-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: John Stultz <johnstul@us.ibm.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20090930170754.0886ff2e@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-30Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: MIPS: Avoid spurious make includecheck message MIPS: VPE: Get rid of BKL. MIPS: VPE: Fix build after the credential changes a while ago. MIPS: Excite: Get rid of BKL. MIPS: Sibyte: Get rid of BKL. MIPS: BCM63xx: Add PCMCIA & Cardbus support. MIPS: MSP71xx: request_irq() failure ignored in msp_pcibios_config_access() MIPS: Decrease size of au1xxx_dbdma_pm_regs[][] MIPS: SMP: Inline arch_send_call_function_{single_ipi,ipi_mask} MIPS: SMP: Fix build. MIPS: MIPSxx SC: Avoid destructive invalidation on partial L2 cachelines. MIPS: Sibyte: Fix compilation error. MIPS: BCM1480: Re-apply patch lost due to bad resolution of merge conflict. MIPS: BCM63xx: Add serial driver for bcm63xx integrated UART. MIPS: Loongson2: Fix typo "enalbe" -> "enable" MIPS: SMTC: Remove duplicate structure field initialization MIPS: Remove duplicated #include MIPS: BCM63xx: Remove duplicated #include
2009-09-30MIPS: Avoid spurious make includecheck messageRalf Baechle
arch/mips/include/asm/unaligned.h: linux/unaligned/generic.h is included more than once. Entirely legitimate but just noise. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: VPE: Get rid of BKL.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: VPE: Fix build after the credential changes a while ago.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: Excite: Get rid of BKL.Ralf Baechle
It's not obvious what good it was supposed to do here anyway. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: Sibyte: Get rid of BKL.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: BCM63xx: Add PCMCIA & Cardbus support.Maxime Bizon
Signed-off-by: Maxime Bizon <mbizon@freebox.fr> Reviewed-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: MSP71xx: request_irq() failure ignored in msp_pcibios_config_access()Roel Kluin
Produce an error if request_irq() fails. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: "Ithamar R. Adema" <ithamar.adema@team-embedded.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: Decrease size of au1xxx_dbdma_pm_regs[][]Roel Kluin
There are 16 individual channels (NUM_DBDMA_CHANS) to save/restore plus the global ddma block config (the +1). The last register in a channel can be skipped since it's read-only (at offset 0x18). Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: Manuel Lauss <manuel.lauss@googlemail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: SMP: Inline arch_send_call_function_{single_ipi,ipi_mask}Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: SMP: Fix build.Ralf Baechle
commit 48a048fed82a8e5fdd8618574f6d3de1a0d67a50 Author: Rusty Russell <rusty@rustcorp.com.au> Date: Thu Sep 24 09:34:44 2009 -0600 apparently only passed the "looks good" level of QA ;-) Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: MIPSxx SC: Avoid destructive invalidation on partial L2 cachelines.Kevin Cernekee
This extends commit a8ca8b64e3fdfec17679cba0ca5ce6e3ffed092d to cover MIPSxx-style board cache code. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: Sibyte: Fix compilation error.Mark Mason
Build error introduced by d4f587c67fc39e0030ddd718675e252e208da4d7. Signed-off-by: Mark Mason <mmason@upwardaccess.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: BCM1480: Re-apply patch lost due to bad resolution of merge conflict.Ralf Baechle
Patch 14275ccdb1e4b487cca745aba994699c426a31ee and d5dedd4507d307eb3f35f21b6e16f336fdc0d82a are conflicting and the conflict was resolved badly in merge 92241940be501f798cb21db344bbb3d1ec3c4f1c resulting in the BCM1480 changes of 14275ccdb1e4b487cca745aba994699c426a31ee getting lost. Sort out the damage. Reported and initial patch by Mark Mason <mmason@upwardaccess.com>. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: BCM63xx: Add serial driver for bcm63xx integrated UART.Maxime Bizon
Signed-off-by: Maxime Bizon <mbizon@freebox.fr> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: Loongson2: Fix typo "enalbe" -> "enable"Uwe Kleine-König
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: Yanhua <yanh@lemote.com> Cc: Robert Richter <robert.richter@amd.com> Acked-by: Wu Zhangjin <wuzj@lemote.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: SMTC: Remove duplicate structure field initializationJulia Lawall
The definition of the irq_ipi structure has two initializations of the flags field. This combines them. [Ralf: The issue was originally introduced by commit be4894196d79455f420dd7bb78be7dc73bec115c (linux-mips.org) rsp. 033890b084adfa367c544864451d7730552ce8bf (kernel.org). The original intention of the code was to initialize .flags with both flags ored together. The broken C code as actually implemented will be compiled by an equally broken gcc to use only the last initialization, that is IRQF_PERCPU which means this turned into an SMTC bug for 2.6.23 and newer.] The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r@ identifier I, s, fld; position p0,p; expression E; @@ struct I s =@p0 { ... .fld@p = E, ...}; @s@ identifier I, s, r.fld; position r.p0,p; expression E; @@ struct I s =@p0 { ... .fld@p = E, ...}; @script:python@ p0 << r.p0; fld << r.fld; ps << s.p; pr << r.p; @@ if int(ps[0].line)!=int(pr[0].line) or int(ps[0].column)!=int(pr[0].column): cocci.print_main(fld,p0) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: Remove duplicated #includeHuang Weiyi
Remove duplicated #include in arch/mips/kernel/smp.c. Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30MIPS: BCM63xx: Remove duplicated #includeHuang Weiyi
Remove duplicated #include in arch/mips/bcm63xx/boards/board_bcm963xx.c. Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-30Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2: nilfs2: fix missing initialization of i_dir_start_lookup member nilfs2: fix missing zero-fill initialization of btree node cache
2009-09-30Merge branch 'for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: Fix time encoding with extra epoch bits ext4: Add a stub for mpage_da_data in the trace header jbd2: Use tracepoints for history file ext4: Use tracepoints for mb_history trace file ext4, jbd2: Drop unneeded printks at mount and unmount time ext4: Handle nested ext4_journal_start/stop calls without a journal ext4: Make sure ext4_dirty_inode() updates the inode in no journal mode ext4: Avoid updating the inode table bh twice in no journal mode ext4: EXT4_IOC_MOVE_EXT: Check for different original and donor inodes first ext4: async direct IO for holes and fallocate support ext4: Use end_io callback to avoid direct I/O fallback to buffered I/O ext4: Split uninitialized extents for direct I/O ext4: release reserved quota when block reservation for delalloc retry ext4: Adjust ext4_da_writepages() to write out larger contiguous chunks ext4: Fix hueristic which avoids group preallocation for closed files ext4: Use ext4_msg() for ext4_da_writepage() errors ext4: Update documentation about quota mount options
2009-09-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6: fat: Check s_dirt in fat_sync_fs() vfat: change the default from shortname=lower to shortname=mixed fat/nls: Fix handling of utf8 invalid char
2009-09-30Merge branch 'pm-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6 * 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: PM / yenta: Fix cardbus suspend/resume regression PM / PCMCIA: Drop second argument of pcmcia_socket_dev_suspend()
2009-09-30Merge 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: (33 commits) sony-laptop: re-read the rfkill state when resuming from suspend sony-laptop: check for rfkill hard block at load time wext: add back wireless/ dir in sysfs for cfg80211 interfaces wext: Add bound checks for copy_from_user mac80211: improve/fix mlme messages cfg80211: always get BSS iwlwifi: fix 3945 ucode info retrieval after failure iwlwifi: fix memory leak in command queue handling iwlwifi: fix debugfs buffer handling cfg80211: don't set privacy w/o key cfg80211: wext: don't display BSSID unless associated net: Add explicit bound checks in net/socket.c bridge: Fix double-free in br_add_if. isdn: fix netjet/isdnhdlc build errors atm: dereference of he_dev->rbps_virt in he_init_group() ax25: Add missing dev_put in ax25_setsockopt Revert "sit: stateless autoconf for isatap" net: fix double skb free in dcbnl net: fix nlmsg len size for skb when error bit is set. net: fix vlan_get_size to include vlan_flags size ...
2009-09-30Merge branch 'drm-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (25 commits) drm/radeon/kms: Convert R520 to new init path and associated cleanup drm/radeon/kms: Convert RV515 to new init path and associated cleanup drm: fix radeon DRM warnings when !CONFIG_DEBUG_FS drm: fix drm_fb_helper warning when !CONFIG_MAGIC_SYSRQ drm/r600: fix memory leak introduced with 64k malloc avoidance fix. drm/kms: make fb helper work for all drivers. drm/radeon/r600: fix offset handling in CS parser drm/radeon/kms/r600: fix forcing pci mode on agp cards drm/radeon/kms: fix for the extra pages copying. drm/radeon/kms/r600: add support for vline relocs drm/radeon/kms: fix some bugs in vline reloc drm/radeon/kms/r600: clamp vram to aperture size drm/kms: protect against fb helper not being created. drm/r600: get values from the passed in IB not the copy. drm: create gitignore file for radeon drm/radeon/kms: remove unneeded master create/destroy functions. drm/kms: start adding command line interface using fb. fb: change rules for global rules match. drm/radeon/kms: don't require up to 64k allocations. (v2) drm/radeon/kms: enable dac load detection by default. ... Trivial conflicts in drivers/gpu/drm/radeon/radeon_asic.h due to adding '->vga_set_state' function pointers.
2009-09-30Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: percpu: make allocation failures more verbose percpu: make pcpu_setup_first_chunk() failures more verbose percpu: make embedding first chunk allocator check vmalloc space size sparc64: implement page mapping percpu first chunk allocator percpu: make pcpu_build_alloc_info() clear static buffers percpu: fix unit_map[] verification in pcpu_setup_first_chunk()
2009-09-30Merge branch 'omap-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 * 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: omap: Fix wrong condition check in while loop for mailbox and iommu2 omap: rng: Use resource_size instead of manual calculation omap: Fix MMC gpio_wp for BeagleBoard C2 and above omap: Fix matrix_keymap_data usage omap: Fix a OMAP_MPUIO_VBASE typo for 850 omap: Fix wrong jtag_id for 850 omap: iovmm: Fix compiler warning omap: mailbox: Flush posted write when acking mailbox irq omap: mailbox: Execute softreset at startup omap: Add missing mux pin for EHCI phy reset line omap: Fix 44xx compile omap: Fix mcspi compile for 2420 omap: Fix compile for arch/arm/mach-omap2
2009-09-30pty: reconnect the BSD TIOCSPTLCK handling to legacy ptysLinus Torvalds
David Howells noticed (due to the compiler warning about an unused 'pty_ops_bsd' variable) that we haven't actually been using the code that implements TIOCSPTLCK for legacy pty handling. It's been that way since 2.6.26, commit 3e8e88ca053150efdbecb45d8f481cf560ec808d to be exact ("pty: prepare for tty->ops changes"). DavidH initially submitted a patch just removing the dead code entirely, and since nobody has apparently ever complained, I'm not entirely sure that wouldn't be the right thing to do. But since the whole and only point of the legacy pty code is to be compatible with legacy distros that don't use the new unix98 pty model, let's just wire it up again. And clean it up a bit while we're at it. Acked-by: David Howells <dhowells@redhat.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-30Revert "x86, mce: do not compile mcelog message on AMD"Linus Torvalds
This reverts commit 22223c9b417be5fd0ab2cf9ad17eb7bd1e19f7b9, as requested by Andi Kleen: "Obviously kernels compiled with AMD support can still run on non AMD systems, so messages like this can never be removed at compile time." Requsted-by: Andi Kleen <andi@firstfloor.org> Cc: Borislav Petkov <borislav.petkov@amd.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-30ext4: Fix time encoding with extra epoch bitsTheodore Ts'o
"Looking at ext4.h, I think the setting of extra time fields forgets to mask the epoch bits so the epoch part overwrites nsec part. The second change is only for coherency (2 -> EXT4_EPOCH_BITS)." Thanks to Damien Guibouret for pointing out this problem. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2009-09-30ext4: Add a stub for mpage_da_data in the trace headerJosh Stone
The tracepoint ext4_da_write_pages has a struct mpage_da_data* parameter, but that struct is only defined in fs/ext4/ext4.h. This patch adds a forward declaration for that struct, so this tracepoint header can still be used by tools like SystemTap. This is a continuation of the fix in commit 3661d286. http://sourceware.org/bugzilla/show_bug.cgi?id=10703 Signed-off-by: Josh Stone <jistone@redhat.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2009-09-30jbd2: Use tracepoints for history fileTheodore Ts'o
The /proc/fs/jbd2/<dev>/history was maintained manually; by using tracepoints, we can get all of the existing functionality of the /proc file plus extra capabilities thanks to the ftrace infrastructure. We save memory as a bonus. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2009-09-30ext4: Use tracepoints for mb_history trace fileTheodore Ts'o
The /proc/fs/ext4/<dev>/mb_history was maintained manually, and had a number of problems: it required a largish amount of memory to be allocated for each ext4 filesystem, and the s_mb_history_lock introduced a CPU contention problem. By ripping out the mb_history code and replacing it with ftrace tracepoints, and we get more functionality: timestamps, event filtering, the ability to correlate mballoc history with other ext4 tracepoints, etc. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2009-09-29ext4, jbd2: Drop unneeded printks at mount and unmount timeTheodore Ts'o
There are a number of kernel printk's which are printed when an ext4 filesystem is mounted and unmounted. Disable them to economize space in the system logs. In addition, disabling the mballoc stats by default saves a number of unneeded atomic operations for every block allocation or deallocation. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2009-09-29ext4: Handle nested ext4_journal_start/stop calls without a journalCurt Wohlgemuth
This patch fixes a problem with handling nested calls to ext4_journal_start/ext4_journal_stop, when there is no journal present. Signed-off-by: Curt Wohlgemuth <curtw@google.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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