Linus Torvalds
2e00266297
Merge branch 'fs-file-descriptor-optimization' ...
Merge file descriptor allocation speedup.
Eric Dumazet has a test-case for a fairly common network deamon load
pattern: openign and closing a lot of sockets that each have very little
work done on them. It turns out that in that case, the cost of just
finding the correct file descriptor number can be a dominating factor.
We've long had a trivial optimization for allocating file descriptors
sequentially, but that optimization ends up being not very effective
when other file descriptors are being closed concurrently, and the fd
patterns are not some simple FIFO pattern. In such cases we ended up
spending a lot of time just scanning the bitmap of open file descriptors
in order to find the next file descriptor number to open.
This trivial patch-series mitigates that by simply introducing a
second-level bitmap of which words in the first bitmap are already fully
allocated. That cuts down the cost of scanning by an order of magnitude
in some pathological (but realistic) cases.
The second patch is an even more trivial patch to avoid unnecessarily
dirtying the cacheline for the close-on-exec bit array that normally
ends up being all empty.
* fs-file-descriptor-optimization:
vfs: conditionally clear close-on-exec flag
vfs: Fix pathological performance case for __alloc_fd()
2015-11-01 16:43:24 -08:00
Revert "uart: pl011: Add support to ZTE ZX296702 uart"
2015-09-04 09:14:20 -07:00
bcma: switch GPIO portions to use GPIOLIB_IRQCHIP
2015-08-18 09:08:47 +03:00
libceph: advertise support for keepalive2
2015-09-17 20:14:27 +03:00
ARM: SoC driver updates for v4.3
2015-09-01 13:00:04 -07:00
fsl /bestcomm
Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
2015-09-04 15:49:32 -07:00
iio: Add inverse unit conversion macros
2015-08-08 12:50:40 +01:00
ARM:
2015-09-10 16:42:49 -07:00
sound updates for 4.3-rc1
2015-09-04 11:46:02 -07:00
Changes for 4.3
2015-09-09 08:33:31 -07:00
IB/mlx5: Remove support for IB_DEVICE_LOCAL_DMA_LKEY
2015-09-25 10:46:51 -04:00
mmc: block: skip trim for some kingston eMMCs
2015-08-27 14:50:52 +02:00
arch, drivers: don't include <asm/io.h> directly, use <linux/io.h> instead
2015-08-10 23:07:05 -04:00
netfilter: nf_conntrack: make nf_ct_zone_dflt built-in
2015-09-02 16:32:56 -07:00
MMC core:
2015-09-08 16:33:16 -07:00
Merge remote-tracking branches 'regulator/topic/qcom-smd', 'regulator/topic/qcom-spmi', 'regulator/topic/rk808', 'regulator/topic/stub' and 'regulator/topic/tol' into regulator-next
2015-08-30 14:40:11 +01:00
ARM: SoC driver updates for v4.3
2015-09-01 13:00:04 -07:00
spi: fix kernel-doc warnings in spi.h
2015-09-16 20:44:47 +01:00
SUNRPC: Ensure that we wait for connections to complete before retrying
2015-09-17 18:01:28 -04:00
usb: renesas_usbhs: fix build warning if 64-bit architecture
2015-09-30 11:21:03 -05:00
ACPI, PCI, irq: Do not share PCI IRQ with ISA IRQ
2015-09-26 01:53:07 +02:00
locking/atomics: Add _{acquire|release|relaxed}() variants of some atomic operations
2015-08-12 11:58:59 +02:00
audit: implement audit by executable
2015-08-06 16:17:25 -04:00
average: remove out-of-line implementation
2015-08-20 14:10:23 -07:00
writeback: bdi_writeback iteration must not skip dying ones
2015-10-12 10:31:12 -06:00
block: don't release bdi while request_queue has live references
2015-10-15 09:53:28 -06:00
block: Replace SG_GAPS with new queue limits mask
2015-08-19 14:26:02 -07:00
blkcg: fix incorrect read/write sync/async stat accounting
2015-10-27 15:04:56 +09:00
blk-mq: factor out a helper to iterate all tags for a request_queue
2015-10-01 10:10:57 +02:00
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
2015-09-03 12:28:30 -07:00
blk-mq: fix sysfs registration/unregistration race
2015-09-29 11:32:45 -06:00
bpf: Implement function bpf_perf_event_read() that get the selected hardware PMU conuter
2015-08-09 22:50:06 -07:00
Revert "sched, cgroup: replace signal_struct->group_rwsem with a global percpu_rwsem"
2015-09-16 11:51:12 -04:00
Merge branch 'for-4.3-unified-base' into for-4.3
2015-08-25 14:19:29 -04:00
Merge branch 'for-4.3/blkcg' of git://git.kernel.dk/linux-block
2015-09-10 18:56:14 -07:00
clk: Constify clk_hw argument to provider APIs
2015-08-24 16:49:11 -07:00
clockevents: Remove unused set_mode() callback
2015-09-14 11:00:55 +02:00
mm: cma: fix incorrect type conversion for size during dma allocation
2015-10-23 17:55:10 +09:00
Revert "Merge branch 'ipv6-overflow-arith'"
2015-10-29 07:01:48 -07:00
compiler, atomics, kasan: Provide READ_ONCE_NOCHECK()
2015-10-20 11:04:19 +02:00
cpufreq: acpi-cpufreq: Use cpufreq_cpu_get_raw() in ->get()
2015-09-16 02:17:49 +02:00
cpuidle/coupled: Remove cpuidle_device::safe_state_index
2015-08-28 15:14:54 +02:00
capabilities: ambient capabilities
2015-09-04 16:54:41 -07:00
crypto: aead - Remove CRYPTO_ALG_AEAD_NEW flag
2015-08-17 16:53:53 +08:00
dax: add huge page fault support
2015-09-08 15:35:28 -07:00
PM / devfreq: comments for get_dev_status usage updated
2015-09-11 14:23:29 +09:00
block: kill merge_bvec_fn() completely
2015-08-13 12:31:57 -06:00
Power management and ACPI material for v4.3-rc1
2015-09-01 19:45:46 -07:00
mm: cma: fix incorrect type conversion for size during dma allocation
2015-10-23 17:55:10 +09:00
dmaengine: Stricter legacy checking in dma_request_slave_channel_compat()
2015-08-20 12:01:03 +05:30
mm: add dma_pool_zalloc() call to DMA API
2015-09-08 15:35:28 -07:00
net: fix endian check warning in etherdevice.h
2015-08-17 12:14:53 -07:00
extcon: Remove optional print_state() function pointer of struct extcon_dev
2015-08-10 11:48:55 +09:00
f2fs: add annotation for space utilization of regular/inline dentry
2015-08-21 22:45:13 -07:00
fbdev: fix cea_modes array size
2015-08-20 10:20:11 +03:00
vfs: Fix pathological performance case for __alloc_fd()
2015-10-31 16:12:10 -07:00
dax: move DAX-related functions to a new header
2015-09-08 15:35:28 -07:00
drivers: usb: fsl: Workaround for USB erratum-A005275
2015-08-14 16:50:36 -07:00
fsl_ifc: Change IO accessor based on endianness
2015-08-07 22:59:34 -05:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-09-05 20:34:28 -07:00
genalloc: add support of multiple gen_pools per device
2015-09-04 16:54:41 -07:00
mm: use numa_mem_id() in alloc_pages_node()
2015-09-08 15:35:28 -07:00
dax: don't use set_huge_zero_page()
2015-09-08 15:35:28 -07:00
hugetlbfs: add hugetlbfs_fallocate()
2015-09-08 15:35:28 -07:00
i2c: core: Add support for best effort block read emulation
2015-08-24 14:05:19 +02:00
mac80211: fix BIT position for TDLS WIDE extended cap
2015-08-14 17:49:53 +02:00
IGMP: Inhibit reports for local multicast groups
2015-08-28 13:28:47 -07:00
Revert "sched, cgroup: replace signal_struct->group_rwsem with a global percpu_rwsem"
2015-09-16 11:51:12 -04:00
iommu/vt-d: Split up iommu->domains array
2015-08-12 16:23:33 +02:00
arch, drivers: don't include <asm/io.h> directly, use <linux/io.h> instead
2015-08-10 23:07:05 -04:00
add devm_memremap_pages
2015-08-27 19:40:58 -04:00
ipmi: Don't flush messages in sender() in run-to-completion mode
2015-09-03 15:02:28 -05:00
net: ipv6 sysctl option to ignore routes when nexthop link is down
2015-08-13 21:27:19 -07:00
genirq: Remove irq argument from irq flow handlers
2015-09-16 15:47:51 +02:00
genirq: Remove irq argument from irq flow handlers
2015-09-16 15:47:51 +02:00
irqdomain: Add an accessor for the of_node field
2015-10-09 17:17:30 +02:00
genirq: Remove irq argument from irq flow handlers
2015-09-16 15:47:51 +02:00
Pretty much all bug fixes and clean ups for 4.3, after a lot of
2015-09-03 12:52:19 -07:00
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2015-09-01 14:04:50 -07:00
locking/static_keys: Fix up the static keys documentation
2015-09-15 07:12:06 +02:00
x86/kasan, mm: Introduce generic kasan_populate_zero_shadow()
2015-08-22 14:54:55 +02:00
kernfs: implement kernfs_path_len()
2015-08-18 15:49:15 -07:00
kexec: split kexec_load syscall from kexec core code
2015-09-10 13:29:01 -07:00
kmod: use system_unbound_wq instead of khelper
2015-09-10 13:29:01 -07:00
kernel/kthread.c:kthread_create_on_node(): clarify documentation
2015-09-04 16:54:41 -07:00
KVM: make halt_poll_ns per-vCPU
2015-09-06 16:27:10 +02:00
libnvdimm, pmem: direct map legacy pmem by default
2015-08-28 23:40:05 -04:00
inode: add hlist_fake to avoid the inode hash lock in evict
2015-08-17 18:39:45 -04:00
locking, include/llist: Use linux/atomic.h instead of asm/cmpxchg.h
2015-08-12 11:59:08 +02:00
mailbox: switch to hrtimer for tx_complete polling
2015-08-10 14:29:27 +05:30
mem-hotplug: handle node hole when initializing numa_meminfo.
2015-09-08 15:35:28 -07:00
writeback: fix incorrect calculation of available memory for memcg domains
2015-10-12 10:31:13 -06:00
mm: ZONE_DEVICE for "device memory"
2015-08-27 19:40:58 -04:00
add microchip LAN88xx phy driver
2015-09-09 17:19:14 -07:00
memcg: fix dirty page migration
2015-10-01 21:42:35 -04:00
mm: drop __nocast from vm_flags_t definition
2015-09-08 15:35:28 -07:00
mm: introduce idle page tracking
2015-09-10 13:29:01 -07:00
libnvdimm for 4.3:
2015-09-08 14:35:59 -07:00
mod_devicetable: add space before */
2015-08-07 15:03:42 +02:00
net_dbg_ratelimited: turn into no-op when !DEBUG
2015-08-06 23:51:30 -07:00
openvswitch: Fix egress tunnel info.
2015-10-22 19:39:25 -07:00
netfilter: nf_conntrack: make nf_ct_zone_dflt built-in
2015-09-02 16:32:56 -07:00
netfilter: Define v6ops in !CONFIG_NETFILTER case.
2015-08-27 16:35:51 -07:00
netlink, mmap: fix edge-case leakages in nf queue zero-copy
2015-09-09 21:43:22 -07:00
pnfs: move common blocklayout XDR defintions to nfs4.h
2015-08-17 13:22:49 -05:00
NFS: Remove nfs_release()
2015-08-17 13:32:56 -05:00
NFS: Get suppattr_exclcreat when getting server capabilities
2015-08-27 19:45:27 -04:00
NFSv4: Express delegation limit in units of pages
2015-09-07 12:36:13 -04:00
Merge branch 'nmi' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
2015-09-08 12:28:10 -07:00
NTB: Fix documentation for ntb_peer_db_clear.
2015-09-07 15:17:09 -04:00
NTB: Add flow control to the ntb_netdev
2015-09-07 15:17:08 -04:00
NVMe: Add nvme subsystem reset IOCTL
2015-08-18 11:56:13 -06:00
device property: check fwnode type in to_of_node()
2015-08-26 01:46:39 +02:00
of/platform: add function to populate default bus
2015-08-25 11:29:55 -05:00
PKCS#7: Add OIDs for sha224, sha284 and sha512 hash algos and use them
2015-09-01 09:59:20 +10:00
ARM: OMAP1: fix incorrect INT_DMA_LCD
2015-10-28 10:05:58 -07:00
mm, oom: add description of struct oom_control
2015-09-08 15:35:28 -07:00
mm: introduce idle page tracking
2015-09-10 13:29:01 -07:00
mm, page_isolation: make set/unset_migratetype_isolate() file-local
2015-09-08 15:35:28 -07:00
mm: introduce idle page tracking
2015-09-10 13:29:01 -07:00
mm: introduce idle page tracking
2015-09-10 13:29:01 -07:00
PCI: Move ATS declarations to linux/pci.h so they're all together
2015-08-13 15:59:58 -05:00
pci: mm: add pci_pool_zalloc() call
2015-09-08 15:35:28 -07:00
[media] tw68: Move PCI vendor and device IDs to pci_ids.h
2015-08-16 13:26:01 -03:00
percpu-rwsem: introduce percpu_rwsem_release() and percpu_rwsem_acquire()
2015-08-15 13:52:10 +02:00
perf: add the necessary core perf APIs when accessing events counters in eBPF programs
2015-08-09 22:50:05 -07:00
phy: add phy_device_remove()
2015-09-24 23:04:53 -07:00
phy: fixed_phy: Add gpio to determine link up/down.
2015-08-31 14:48:02 -07:00
PM / Domains: Remove unusable governor dummies
2015-08-29 01:54:43 +02:00
PM / OPP: add dev_pm_opp_get_suspend_opp() helper
2015-09-09 02:20:39 +02:00
x86, pmem: clarify that ARCH_HAS_PMEM_API implies PMEM mapped WB
2015-08-27 19:40:59 -04:00
include/linux/poison.h: remove not-used poison pointer macros
2015-09-10 13:29:01 -07:00
hexdump: do not print debug dumps for !CONFIG_DEBUG
2015-09-10 13:29:01 -07:00
Add a matching set of device_ functions for determining mac/phy
2015-08-13 16:58:29 -07:00
proportions: Spelling s/consitent/consistent/
2015-08-07 14:37:04 +02:00
pwm: Clean up kerneldoc
2015-08-17 15:40:20 +02:00
rcu: Change _wait_rcu_gp() to work around GCC bug 67055
2015-09-20 20:50:06 -07:00
Merge remote-tracking branches 'regmap/topic/lockdep' and 'regmap/topic/seq-delay' into regmap-next
2015-09-04 17:22:10 +01:00
reset: Add (devm_)reset_control_get stub functions
2015-09-01 09:56:58 +02:00
mm: send one IPI per CPU to TLB flush all entries after unmapping pages
2015-09-04 16:54:41 -07:00
lib: scatterlist: add sg splitting function
2015-08-24 14:28:01 -06:00
Revert "sched, cgroup: replace signal_struct->group_rwsem with a global percpu_rwsem"
2015-09-16 11:51:12 -04:00
security: fix typo in security_task_prctl
2015-09-20 17:00:26 -07:00
fs/seq_file: convert int seq_vprint/seq_printf/etc... returns to void
2015-09-11 15:21:34 -07:00
skbuff: Fix skb checksum partial check.
2015-09-29 16:48:46 -07:00
slab: infrastructure for bulk object allocation and freeing
2015-09-04 16:54:41 -07:00
smpboot: allow passing the cpumask on per-cpu thread registration
2015-09-04 16:54:41 -07:00
Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2015-09-01 08:40:25 -07:00
string: provide strscpy()
2015-09-10 15:36:59 -04:00
lib/string_helpers: rename "esc" arg to "only"
2015-09-10 13:29:01 -07:00
mm: swap: zswap: maybe_preload & refactoring
2015-09-08 15:35:28 -07:00
mm/hwpoison: fix race between soft_offline_page and unpoison_memory
2015-09-08 15:35:28 -07:00
sys_membarrier(): system-wide memory barrier (generic, x86)
2015-09-11 15:21:34 -07:00
thermal: Add a function to get the minimum power
2015-09-14 07:39:46 -07:00
nohz: Affine unpinned timers to housekeepers
2015-09-02 10:33:22 +02:00
time: Introduce struct itimerspec64
2015-08-17 11:25:28 -07:00
Merge branch 'fortglx/4.3/time' of https://git.linaro.org/people/john.stultz/linux into timers/core
2015-08-20 21:13:22 +02:00
tracing, perf: Implement BPF programs attached to uprobes
2015-08-06 15:29:14 -03:00
lib: introduce strncpy_from_unsafe()
2015-08-28 16:27:27 -07:00
Revert "usb: interface authorization: Declare authorized attribute"
2015-08-18 09:59:12 -07:00
userfaultfd: mcopy_atomic|mfill_zeropage: UFFDIO_COPY|UFFDIO_ZEROPAGE preparation
2015-09-04 16:54:41 -07:00
PKCS#7: Appropriately restrict authenticated attributes and content type
2015-08-12 17:01:01 +01:00
userfaultfd: revert "userfaultfd: waitqueue: add nr wake parameter to __wake_up_locked_key"
2015-09-22 15:09:53 -07:00
kernel/watchdog: move NMI function header declarations from watchdog.h to nmi.h
2015-09-04 16:54:41 -07:00
workqueue: fix some docbook warnings
2015-08-17 15:48:24 -04:00
mm: zbud: constify the zbud_ops
2015-09-08 15:35:28 -07:00
zpool: add zpool_has_pool()
2015-09-10 13:29:01 -07:00
zsmalloc: account the number of compacted pages
2015-09-08 15:35:28 -07:00
