07 Mar, 2010
10 commits
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The macro any_online_node() is prone to producing sparse warnings due to
the local symbol 'node'. Since all the in-tree users are really
requesting the first online node (the mask argument is either
NODE_MASK_ALL or node_online_map) just use the first_online_node macro and
remove the any_online_node macro since there are no users.Signed-off-by: H Hartley Sweeten
Acked-by: David Rientjes
Reviewed-by: KAMEZAWA Hiroyuki
Cc: Mel Gorman
Cc: Lee Schermerhorn
Acked-by: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: Dave Hansen
Cc: Milton Miller
Cc: Nathan Fontenot
Cc: Geoff Levand
Cc: Grant Likely
Cc: J. Bruce Fields
Cc: Neil Brown
Cc: Trond Myklebust
Cc: David S. Miller
Cc: Benny Halevy
Cc: Chuck Lever
Cc: Ricardo Labiaga
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Tell git to ignore the generated files under um, except:
include/shared/kern_constants.h
include/shared/user_constants.hwhich will be moved to include/generated.
Signed-off-by: WANG Cong
Cc: Al Viro
Cc: Jeff Dike
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Assign tty only if line is not NULL.
[akpm@linux-foundation.org: simplification]
Signed-off-by: Alexander Beregalov
Cc: Jeff Dike
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
With id 1 the wrong bp was unwatched.
Signed-off-by: Roel Kluin
Cc: Mikael Starvik
Cc: Jesper Nilsson
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
size_t desc_len cannot be less than 0, test before the subtraction.
Signed-off-by: Roel Kluin
Cc: Mikael Starvik
Cc: Jesper Nilsson
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Convert cris to use GENERIC_TIME via the arch_getoffset() infrastructure,
reducing the amount of arch specific code we need to maintain.Signed-off-by: John Stultz
Cc: Mikael Starvik
Cc: Jesper Nilsson
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The initial -EINVAL value is overwritten by `retval = PTR_ERR(name)'. If
this isn't an error pointer and typenr is not 1, 6 or 9, then this retval,
a pointer cast to a long, is returned.Signed-off-by: Roel Kluin
Acked-by: Richard Henderson
Cc: Ivan Kokshaysky
Cc: Matt Turner
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
No architecture except for frv has pci_dma_sync_single() and
pci_dma_sync_sg(). The APIs are deprecated.Signed-off-by: FUJITA Tomonori
Acked-by: David S. Miller
Acked-by: David Howells
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The old anon_vma code can lead to scalability issues with heavily forking
workloads. Specifically, each anon_vma will be shared between the parent
process and all its child processes.In a workload with 1000 child processes and a VMA with 1000 anonymous
pages per process that get COWed, this leads to a system with a million
anonymous pages in the same anon_vma, each of which is mapped in just one
of the 1000 processes. However, the current rmap code needs to walk them
all, leading to O(N) scanning complexity for each page.This can result in systems where one CPU is walking the page tables of
1000 processes in page_referenced_one, while all other CPUs are stuck on
the anon_vma lock. This leads to catastrophic failure for a benchmark
like AIM7, where the total number of processes can reach in the tens of
thousands. Real workloads are still a factor 10 less process intensive
than AIM7, but they are catching up.This patch changes the way anon_vmas and VMAs are linked, which allows us
to associate multiple anon_vmas with a VMA. At fork time, each child
process gets its own anon_vmas, in which its COWed pages will be
instantiated. The parents' anon_vma is also linked to the VMA, because
non-COWed pages could be present in any of the children.This reduces rmap scanning complexity to O(1) for the pages of the 1000
child processes, with O(N) complexity for at most 1/N pages in the system.
This reduces the average scanning cost in heavily forking workloads from
O(N) to 2.The only real complexity in this patch stems from the fact that linking a
VMA to anon_vmas now involves memory allocations. This means vma_adjust
can fail, if it needs to attach a VMA to anon_vma structures. This in
turn means error handling needs to be added to the calling functions.A second source of complexity is that, because there can be multiple
anon_vmas, the anon_vma linking in vma_adjust can no longer be done under
"the" anon_vma lock. To prevent the rmap code from walking up an
incomplete VMA, this patch introduces the VM_LOCK_RMAP VMA flag. This bit
flag uses the same slot as the NOMMU VM_MAPPED_COPY, with an ifdef in mm.h
to make sure it is impossible to compile a kernel that needs both symbolic
values for the same bitflag.Some test results:
Without the anon_vma changes, when AIM7 hits around 9.7k users (on a test
box with 16GB RAM and not quite enough IO), the system ends up running
>99% in system time, with every CPU on the same anon_vma lock in the
pageout code.With these changes, AIM7 hits the cross-over point around 29.7k users.
This happens with ~99% IO wait time, there never seems to be any spike in
system time. The anon_vma lock contention appears to be resolved.[akpm@linux-foundation.org: cleanups]
Signed-off-by: Rik van Riel
Cc: KOSAKI Motohiro
Cc: Larry Woodman
Cc: Lee Schermerhorn
Cc: Minchan Kim
Cc: Andrea Arcangeli
Cc: Hugh Dickins
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Rename for_each_bit to for_each_set_bit in the kernel source tree. To
permit for_each_clear_bit(), should that ever be added.The patch includes a macro to map the old for_each_bit() onto the new
for_each_set_bit(). This is a (very) temporary thing to ease the migration.[akpm@linux-foundation.org: add temporary for_each_bit()]
Suggested-by: Alexey Dobriyan
Suggested-by: Andrew Morton
Signed-off-by: Akinobu Mita
Cc: "David S. Miller"
Cc: Russell King
Cc: David Woodhouse
Cc: Artem Bityutskiy
Cc: Stephen Rothwell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
06 Mar, 2010
3 commits
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* 'kvm-updates/2.6.34' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (145 commits)
KVM: x86: Add KVM_CAP_X86_ROBUST_SINGLESTEP
KVM: VMX: Update instruction length on intercepted BP
KVM: Fix emulate_sys[call, enter, exit]()'s fault handling
KVM: Fix segment descriptor loading
KVM: Fix load_guest_segment_descriptor() to inject page fault
KVM: x86 emulator: Forbid modifying CS segment register by mov instruction
KVM: Convert kvm->requests_lock to raw_spinlock_t
KVM: Convert i8254/i8259 locks to raw_spinlocks
KVM: x86 emulator: disallow opcode 82 in 64-bit mode
KVM: x86 emulator: code style cleanup
KVM: Plan obsolescence of kernel allocated slots, paravirt mmu
KVM: x86 emulator: Add LOCK prefix validity checking
KVM: x86 emulator: Check CPL level during privilege instruction emulation
KVM: x86 emulator: Fix popf emulation
KVM: x86 emulator: Check IOPL level during io instruction emulation
KVM: x86 emulator: fix memory access during x86 emulation
KVM: x86 emulator: Add Virtual-8086 mode of emulation
KVM: x86 emulator: Add group9 instruction decoding
KVM: x86 emulator: Add group8 instruction decoding
KVM: do not store wqh in irqfd
...Trivial conflicts in Documentation/feature-removal-schedule.txt
-
Fix missing kernel-doc notation in mtrr/main.c:
Warning(arch/x86/kernel/cpu/mtrr/main.c:152): No description found for parameter 'info'
Signed-off-by: Randy Dunlap
Signed-off-by: Linus Torvalds -
…nel/git/tip/linux-2.6-tip
* 'perf-probes-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: Issue at least one memory barrier in stop_machine_text_poke()
perf probe: Correct probe syntax on command line help
perf probe: Add lazy line matching support
perf probe: Show more lines after last line
perf probe: Check function address range strictly in line finder
perf probe: Use libdw callback routines
perf probe: Use elfutils-libdw for analyzing debuginfo
perf probe: Rename probe finder functions
perf probe: Fix bugs in line range finder
perf probe: Update perf probe document
perf probe: Do not show --line option without dwarf support
kprobes: Add documents of jump optimization
kprobes/x86: Support kprobes jump optimization on x86
x86: Add text_poke_smp for SMP cross modifying code
kprobes/x86: Cleanup save/restore registers
kprobes/x86: Boost probes when reentering
kprobes: Jump optimization sysctl interface
kprobes: Introduce kprobes jump optimization
kprobes: Introduce generic insn_slot framework
kprobes/x86: Cleanup RELATIVEJUMP_INSTRUCTION to RELATIVEJUMP_OPCODE
05 Mar, 2010
3 commits
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc64: Make prom entry spinlock NMI safe.
sparc64: Kill off old sys_perfctr system call and state.
sparc: Update defconfigs.
sparc: Provide io{read,write}{16,32}be(). -
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: (28 commits)
ioat: cleanup ->timer_fn() and ->cleanup_fn() prototypes
ioat3: interrupt coalescing
ioat: close potential BUG_ON race in the descriptor cleanup path
ioat2: kill pending flag
ioat3: use ioat2_quiesce()
ioat3: cleanup, don't enable DCA completion writes
DMAENGINE: COH 901 318 lli sg offset fix
DMAENGINE: COH 901 318 configure channel direction
DMAENGINE: COH 901 318 remove irq counting
DMAENGINE: COH 901 318 descriptor pool refactoring
DMAENGINE: COH 901 318 cleanups
dma: Add MPC512x DMA driver
Debugging options for the DMA engine subsystem
iop-adma: redundant/wrong tests in iop_*_count()?
dmatest: fix handling of an even number of xor_sources
dmatest: correct raid6 PQ test
fsldma: Fix cookie issues
fsldma: Fix cookie issues
dma: cases IPU_PIX_FMT_BGRA32, BGR32 and ABGR32 are the same in ipu_ch_param_set_size()
dma: make Open Firmware device id constant
... -
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (52 commits)
init: Open /dev/console from rootfs
mqueue: fix typo "failues" -> "failures"
mqueue: only set error codes if they are really necessary
mqueue: simplify do_open() error handling
mqueue: apply mathematics distributivity on mq_bytes calculation
mqueue: remove unneeded info->messages initialization
mqueue: fix mq_open() file descriptor leak on user-space processes
fix race in d_splice_alias()
set S_DEAD on unlink() and non-directory rename() victims
vfs: add NOFOLLOW flag to umount(2)
get rid of ->mnt_parent in tomoyo/realpath
hppfs can use existing proc_mnt, no need for do_kern_mount() in there
Mirror MS_KERNMOUNT in ->mnt_flags
get rid of useless vfsmount_lock use in put_mnt_ns()
Take vfsmount_lock to fs/internal.h
get rid of insanity with namespace roots in tomoyo
take check for new events in namespace (guts of mounts_poll()) to namespace.c
Don't mess with generic_permission() under ->d_lock in hpfs
sanitize const/signedness for udf
nilfs: sanitize const/signedness in dealing with ->d_name.name
...Fix up fairly trivial (famous last words...) conflicts in
drivers/infiniband/core/uverbs_main.c and security/tomoyo/realpath.c
04 Mar, 2010
10 commits
-
Fix stop_machine_text_poke() to issue smp_mb() before exiting
waiting loop, and use cpu_relax() for waiting.Changes in v2:
- Don't use ACCESS_ONCE().Signed-off-by: Masami Hiramatsu
Acked-by: Mathieu Desnoyers
Cc: systemtap
Cc: DLE
Cc: Jason Baron
LKML-Reference:
Signed-off-by: Ingo Molnar -
->kill_sb() will be called after any failure exit, so no need
to duplicate what it can do.Signed-off-by: Al Viro
-
... instead of mixing FMODE_ and O_
Signed-off-by: Al Viro
-
* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
resource: Fix broken indentation
resource: Fix generic page_is_ram() for partial RAM pages
x86, paravirt: Remove kmap_atomic_pte paravirt op.
x86, vmi: Disable highmem PTE allocation even when CONFIG_HIGHPTE=y
x86, xen: Disable highmem PTE allocation even when CONFIG_HIGHPTE=y -
If we do something like try to print to the OF console from an NMI
while we're already in OpenFirmware, we'll deadlock on the spinlock.Use a raw spinlock and disable NMIs when we take it.
Signed-off-by: David S. Miller
-
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (220 commits)
USB: backlight, appledisplay: fix incomplete registration failure handling
USB: pl2303: remove unnecessary reset of usb_device in urbs
USB: ftdi_sio: remove obsolete check in unthrottle
USB: ftdi_sio: remove unused tx_bytes counter
USB: qcaux: driver for auxiliary serial ports on Qualcomm devices
USB: pl2303: initial TIOCGSERIAL support
USB: option: add Longcheer/Longsung vendor ID
USB: fix I2C API usage in ohci-pnx4008.
USB: usbmon: mask seconds properly in text API
USB: sisusbvga: no unnecessary GFP_ATOMIC
USB: storage: onetouch: unnecessary GFP_ATOMIC
USB: serial: ftdi: add CONTEC vendor and product id
USB: remove references to port->port.count from the serial drivers
USB: tty: Prune uses of tty_request_room in the USB layer
USB: tty: Add a function to insert a string of characters with the same flag
USB: don't read past config->interface[] if usb_control_msg() fails in usb_reset_configuration()
USB: tty: kill request_room for USB ACM class
USB: tty: sort out the request_room handling for whiteheat
USB: storage: fix misplaced parenthesis
USB: vstusb.c: removal of driver for Vernier Software & Technology, Inc., devices and spectrometers
... -
* 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (25 commits)
x86: Fix out of order of gsi
x86: apic: Fix mismerge, add arch_probe_nr_irqs() again
x86, irq: Keep chip_data in create_irq_nr and destroy_irq
xen: Remove unnecessary arch specific xen irq functions.
smp: Use nr_cpus= to set nr_cpu_ids early
x86, irq: Remove arch_probe_nr_irqs
sparseirq: Use radix_tree instead of ptrs array
sparseirq: Change irq_desc_ptrs to static
init: Move radix_tree_init() early
irq: Remove unnecessary bootmem code
x86: Add iMac9,1 to pci_reboot_dmi_table
x86: Convert i8259_lock to raw_spinlock
x86: Convert nmi_lock to raw_spinlock
x86: Convert ioapic_lock and vector_lock to raw_spinlock
x86: Avoid race condition in pci_enable_msix()
x86: Fix SCI on IOAPIC != 0
x86, ia32_aout: do not kill argument mapping
x86, irq: Move __setup_vector_irq() before the first irq enable in cpu online path
x86, irq: Update the vector domain for legacy irqs handled by io-apic
x86, irq: Don't block IRQ0_VECTOR..IRQ15_VECTOR's on all cpu's
... -
…l/git/tip/linux-2.6-tip
* 'x86-bootmem-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (30 commits)
early_res: Need to save the allocation name in drop_range_partial()
sparsemem: Fix compilation on PowerPC
early_res: Add free_early_partial()
x86: Fix non-bootmem compilation on PowerPC
core: Move early_res from arch/x86 to kernel/
x86: Add find_fw_memmap_area
Move round_up/down to kernel.h
x86: Make 32bit support NO_BOOTMEM
early_res: Enhance check_and_double_early_res
x86: Move back find_e820_area to e820.c
x86: Add find_early_area_size
x86: Separate early_res related code from e820.c
x86: Move bios page reserve early to head32/64.c
sparsemem: Put mem map for one node together.
sparsemem: Put usemap for one node together
x86: Make 64 bit use early_res instead of bootmem before slab
x86: Only call dma32_reserve_bootmem 64bit !CONFIG_NUMA
x86: Make early_node_mem get mem > 4 GB if possible
x86: Dynamically increase early_res array size
x86: Introduce max_early_res and early_res_count
... -
People should be using the perf events interfaces, and
the way these system call facilities used the %pcr conflicts
with the usage of the NMI watchdog and perf events.Signed-off-by: David S. Miller
03 Mar, 2010
11 commits
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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
percpu: add __percpu sparse annotations to what's left
percpu: add __percpu sparse annotations to fs
percpu: add __percpu sparse annotations to core kernel subsystems
local_t: Remove leftover local.h
this_cpu: Remove pageset_notifier
this_cpu: Page allocator conversion
percpu, x86: Generic inc / dec percpu instructions
local_t: Move local.h include to ringbuffer.c and ring_buffer_benchmark.c
module: Use this_cpu_xx to dynamically allocate counters
local_t: Remove cpu_local_xx macros
percpu: refactor the code in pcpu_[de]populate_chunk()
percpu: remove compile warnings caused by __verify_pcpu_ptr()
percpu: make accessors check for percpu pointer in sparse
percpu: add __percpu for sparse.
percpu: make access macros universal
percpu: remove per_cpu__ prefix. -
Signed-off-by: David S. Miller
-
Signed-off-by: David S. Miller
-
Adding vbus_pin_inverted so that the usb detect pin can be active high
or low depending on HW implementation also replaced the
gpio_get_value(udc->vbus_pin); with a call to vbus_is_present(udc); This
allows the driver to be loaded and save about 0,15W on the consumption.Signed-off-by: Eirik Aanonsen
Signed-off-by: Greg Kroah-Hartman -
trivial patch enabling g_nokia on rx51_defconfig.
Signed-off-by: Felipe Balbi
Signed-off-by: Greg Kroah-Hartman -
Signed-off-by: Martin Fuzzey
Signed-off-by: Greg Kroah-Hartman -
Also fixes tab/space issue causing checkpatch to complain.
Signed-off-by: Martin Fuzzey
Signed-off-by: Greg Kroah-Hartman -
This driver is a Full / Low speed only USB host for the i.MX21.
Signed-off-by: Martin Fuzzey
Signed-off-by: Greg Kroah-Hartman -
This centralize some spread-out initialization of descriptors into
one function and cleans up the error paths.Signed-off-by: Linus Walleij
Signed-off-by: Dan Williams -
* 'for-linus' of git://gitorious.org/linux-omap-dss2/linux: (49 commits)
OMAP: DSS2: Taal: Fix TE when resuming
OMAP: DSS2: Taal: Fix ESD check
OMAP: DSS2: OMAPFB: Constify some function parameters
OMAP: DSS2: OMAPFB: install omapfb.h
OMAP: DSS2: DSI: add error prints
OMAP: DSS2: TPO-TD03MTEA1: fix function names
OMAP: DSS2: DSI: add dsi_vc_dcs_read_2() helper
OMAP: DSS2: OMAPFB: Remove FB_OMAP2_FORCE_AUTO_UPDATE
OMAP: DSS2: DSI: remove external TE support
OMAP: DSS2: move timing functions
OMAP: DSS2: move set/get_wss()
OMAP: DSS2: move enable/disable/suspend/resume
OMAP: DSS2: move update() and sync()
OMAP: DSS2: move set/get_update_mode()
OMAP: DSS2: move enable/get_te()
OMAP: DSS2: move get_recommended_bpp()
OMAP: DSS2: move get_resolution()
OMAP: DSS2: move enable/disable_channel to overlay manager
OMAP: DSS2: move wait_vsync()
OMAP: DSS2: move get/set_rotate()
... -
* 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: (214 commits)
omap2: Initialize Menelaus and MMC for N8X0
AM3517 EVM: correct typo - tca6416 mispelt as tca6516
AM3517 EVM: Enable I2C support
AM35x: Enable OMAP_MUX in defconfig
AM35x: Add missing GPIO mux config for EHCI port
Zoom3: Defconfig update
omap: i2c: Fix muxing for command line enabled bus
OMAP4: clock: Remove clock hacks from timer-gp.c
OMAP4: clock: Add dummy clock nodes for interface clocks
OMAP4: clock: Rename leaf clock nodes to end with a _ick or _fck
OMAP2+ clock: revise omap2_clk_{disable,enable}()
OMAP2/3 clock: combine OMAP2 & 3 boot-time MPU rate change code
OMAP clockdomain: if no autodeps exist, don't try to add or remove them
OMAP hwmod: add hwmod class support
OMAP hwmod: convert header files with static allocations into C files
OMAP hwmod: convert hwmod to use hardware clock names rather than clkdev dev+con
OMAP clock: add omap_clk_get_by_name() for use by OMAP hwmod core code
OMAP3: clock: add capability to change rate of dpll4_m5_ck_3630
OMAP4 clock: drop the ALWAYS_ENABLED clock flag
OMAP clock: drop RATE_FIXED clock flag
...
02 Mar, 2010
3 commits
-
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next-2.6:
sparc: Support show_unhandled_signals.
sparc: use __ratelimit
sunxvr500: Additional PCI id for sunxvr500 driver
sparc: use asm-generic/scatterlist.h
sparc64: If 'slot-names' property exist, create sysfs PCI slot information.
sparc: remove trailing space in messages
sparc: remove redundant return statements -
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1341 commits)
virtio_net: remove forgotten assignment
be2net: fix tx completion polling
sis190: fix cable detect via link status poll
net: fix protocol sk_buff field
bridge: Fix build error when IGMP_SNOOPING is not enabled
bnx2x: Tx barriers and locks
scm: Only support SCM_RIGHTS on unix domain sockets.
vhost-net: restart tx poll on sk_sndbuf full
vhost: fix get_user_pages_fast error handling
vhost: initialize log eventfd context pointer
vhost: logging thinko fix
wireless: convert to use netdev_for_each_mc_addr
ethtool: do not set some flags, if others failed
ipoib: returned back addrlen check for mc addresses
netlink: Adding inode field to /proc/net/netlink
axnet_cs: add new id
bridge: Make IGMP snooping depend upon BRIDGE.
bridge: Add multicast count/interval sysfs entries
bridge: Add hash elasticity/max sysfs entries
bridge: Add multicast_snooping sysfs toggle
...Trivial conflicts in Documentation/feature-removal-schedule.txt
-
Conflicts:
arch/arm/plat-omap/Kconfig
