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Eliezer Tamir 2d48d67fa8 net: poll/select low latency socket support 
select/poll busy-poll support.

Split sysctl value into two separate ones, one for read and one for poll.
updated Documentation/sysctl/net.txt

Add a new poll flag POLL_LL. When this flag is set, sock_poll will call
sk_poll_ll if possible. sock_poll sets this flag in its return value
to indicate to select/poll when a socket that can busy poll is found.

When poll/select have nothing to report, call the low-level
sock_poll again until we are out of time or we find something.

Once the system call finds something, it stops setting POLL_LL, so it can
return the result to the user ASAP.

Signed-off-by: Eliezer Tamir <eliezer.tamir@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-06-25 16:35:52 -07:00
..
9p aio: don't include aio.h in sched.h 2013-05-07 20:16:25 -07:00
adfs fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
affs fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
afs aio: don't include aio.h in sched.h 2013-05-07 20:16:25 -07:00
autofs4 autofs - remove autofs dentry mount check 2013-05-06 13:06:59 -07:00
befs befs_readdir(): do not increment ->f_pos if filldir tells us to stop 2013-05-31 15:17:56 -04:00
bfs fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
btrfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 2013-06-13 22:34:14 -07:00
cachefiles lift sb_start_write() out of ->write() 2013-04-09 14:12:56 -04:00
ceph Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client 2013-06-12 08:28:19 -07:00
cifs cifs: fix off-by-one bug in build_unc_path_to_root 2013-05-31 16:23:35 -05:00
coda lift sb_start_write() out of ->write() 2013-04-09 14:12:56 -04:00
configfs fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
cramfs fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
debugfs fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
devpts fs: Limit sys_mount to only request filesystem modules (Part 2). 2013-03-07 01:08:55 -08:00
dlm Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2013-05-01 14:08:52 -07:00
ecryptfs eCryptfs: Check return of filemap_write_and_wait during fsync 2013-06-04 23:53:31 -07:00
efivarfs efivarfs: Never return ENOENT from firmware again 2013-05-13 20:12:10 +01:00
efs fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
exofs block: Add bio_for_each_segment_all() 2013-03-23 14:26:28 -07:00
exportfs hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
ext2 aio: don't include aio.h in sched.h 2013-05-07 20:16:25 -07:00
ext3 Merge branch 'akpm' (incoming from Andrew) 2013-05-07 20:49:51 -07:00
ext4 Fixed regressions (two stability regressions and a performance 2013-05-14 09:30:54 -07:00
f2fs f2fs updates for v3.10 2013-05-08 15:11:48 -07:00
fat fat: fix possible overflow for fat_clusters 2013-05-24 16:22:50 -07:00
freevxfs fs: Readd the fs module aliases. 2013-03-12 18:55:21 -07:00
fscache fs/fscache/stats.c: fix memory leak 2013-04-29 15:54:27 -07:00
fuse fuse: fix alignment in short read optimization for async_dio 2013-06-03 15:15:42 +02:00
gfs2 GFS2: Don't cache iopen glocks 2013-06-03 16:40:22 +01:00
hfs hfs: avoid crash in hfs_bnode_create 2013-05-24 16:22:51 -07:00
hfsplus aio: don't include aio.h in sched.h 2013-05-07 20:16:25 -07:00
hostfs hostfs: use kmalloc instead of kzalloc 2013-05-04 15:48:45 -04:00
hpfs hpfs: fix warnings when the filesystem fills up 2013-06-08 17:39:40 -07:00
hppfs hppfs: get rid of ->fsync() 2013-04-29 15:41:42 -04:00
hugetlbfs hugetlbfs: fix mmap failure in unaligned size request 2013-05-07 18:38:27 -07:00
isofs fs: Readd the fs module aliases. 2013-03-12 18:55:21 -07:00
jbd Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs 2013-05-03 09:56:25 -07:00
jbd2 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
jffs2 fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
jfs fs/jfs: Add check if journaling to disk has been disabled in lbmRead() 2013-05-24 16:03:47 -05:00
lockd LOCKD: Ensure that nlmclnt_block resets block->b_status after a server reboot 2013-04-21 18:08:42 -04:00
logfs block: Remove bi_idx references 2013-03-23 14:15:31 -07:00
minix fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
ncpfs ncpfs: fix rmdir returns Device or resource busy 2013-06-07 12:15:38 -04:00
nfs NFS: Fix security flavor negotiation with legacy binary mounts 2013-05-30 16:31:34 -04:00
nfs_common
nfsd Merge branch 'for-3.10' of git://linux-nfs.org/~bfields/linux 2013-05-10 09:28:55 -07:00
nilfs2 nilfs2: fix issue of nilfs_set_page_dirty() for page at EOF boundary 2013-05-24 16:22:52 -07:00
nls
notify unify compat fanotify_mark(2), switch to COMPAT_SYSCALL_DEFINE 2013-05-09 13:46:38 -04:00
ntfs aio: don't include aio.h in sched.h 2013-05-07 20:16:25 -07:00
ocfs2 ocfs2: add missing lockres put in dlm_mig_lockres_handler 2013-06-12 16:29:46 -07:00
omfs fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
openpromfs fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
proc kmsg: honor dmesg_restrict sysctl on /dev/kmsg 2013-06-12 16:29:44 -07:00
pstore Couple of pstore cleanups 2013-05-09 16:42:10 -07:00
qnx4 fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
qnx6 qnx6: qnx6_readdir() has a braino in pos calculation 2013-05-31 15:17:31 -04:00
quota quota: add missing use of dq_data_lock in __dquot_initialize 2013-03-11 22:05:56 +01:00
ramfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-02-26 20:16:07 -08:00
reiserfs reiserfs: fix deadlock with nfs racing on create/lookup 2013-05-31 23:14:20 +02:00
romfs romfs: fix nommu map length to keep inside filesystem 2013-04-29 09:17:57 +10:00
squashfs fs: Limit sys_mount to only request filesystem modules. (Part 3) 2013-03-11 07:09:48 -07:00
sysfs sysfs: check if one entry has been removed before freeing 2013-04-05 15:35:52 -07:00
sysv fs: Readd the fs module aliases. 2013-03-12 18:55:21 -07:00
ubifs aio: don't include aio.h in sched.h 2013-05-07 20:16:25 -07:00
udf aio: don't include aio.h in sched.h 2013-05-07 20:16:25 -07:00
ufs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-04-30 09:36:50 -07:00
xfs xfs: don't shutdown log recovery on validation errors 2013-06-14 15:59:45 -05:00
aio.c aio: fix io_destroy() regression by using call_rcu() 2013-06-12 16:29:46 -07:00
anon_inodes.c get_empty_filp()/alloc_file() leave both ->f_pos and ->f_version zero 2013-02-26 02:46:11 -05:00
attr.c
bad_inode.c
binfmt_aout.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
binfmt_elf.c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2013-05-02 10:16:16 -07:00
binfmt_elf_fdpic.c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2013-05-02 10:16:16 -07:00
binfmt_em86.c
binfmt_flat.c new helper: read_code() 2013-04-29 15:40:23 -04:00
binfmt_misc.c binfmt_misc: reuse string_unescape_inplace() 2013-04-30 17:04:03 -07:00
binfmt_script.c
binfmt_som.c
bio-integrity.c bio-integrity: Add explicit field for owner of bip_buf 2013-03-23 14:26:34 -07:00
bio.c Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block 2013-05-08 10:13:35 -07:00
block_dev.c Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block 2013-05-08 10:13:35 -07:00
buffer.c Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block 2013-05-08 10:13:35 -07:00
char_dev.c
compat.c aio: don't include aio.h in sched.h 2013-05-07 20:16:25 -07:00
compat_binfmt_elf.c
compat_ioctl.c Removed unused typedef to avoid "unused local typedef" warnings. 2013-05-04 15:03:05 -04:00
coredump.c do_coredump(): don't wait for thaw if coredump has already been interrupted 2013-05-04 14:45:54 -04:00
coredump.h
dcache.c vfs: use list_move instead of list_del/list_add 2013-05-04 15:43:02 -04:00
dcookies.c consolidate compat lookup_dcookie() 2013-03-03 23:00:23 -05:00
direct-io.c Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block 2013-05-08 10:13:35 -07:00
drop_caches.c
eventfd.c
eventpoll.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal 2013-05-01 07:21:43 -07:00
exec.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
fcntl.c new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
fhandle.c
file.c don't bother with deferred freeing of fdtables 2013-05-01 17:31:42 -04:00
file_table.c fput: task_work_add() can fail if the caller has passed exit_task_work() 2013-06-15 05:39:08 +04:00
filesystems.c fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
fs-writeback.c Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block 2013-05-08 10:13:35 -07:00
fs_struct.c constify path_get/path_put and fs_struct.c stuff 2013-03-01 23:51:07 -05:00
generic_acl.c
inode.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
internal.h pipe: fold file_operations instances in one 2013-04-09 14:12:58 -04:00
ioctl.c new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
ioprio.c
Kconfig efivarfs: Move to fs/efivarfs 2013-04-17 13:25:09 +01:00
Kconfig.binfmt fs: make binfmt support for #! scripts modular and removable 2013-04-30 17:04:04 -07:00
libfs.c
locks.c new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
Makefile Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
mbcache.c
mount.h get rid of full-hash scan on detaching vfsmounts 2013-04-09 14:12:52 -04:00
mpage.c
namei.c use can_lookup() instead of direct checks of ->i_op->lookup 2013-06-15 05:41:45 +04:00
namespace.c create_mnt_ns: unidiomatic use of list_add() 2013-05-04 15:18:53 -04:00
no-block.c
open.c make SYSCALL_DEFINE<n>-generated wrappers do asmlinkage_protect 2013-03-03 22:58:33 -05:00
pipe.c aio: don't include aio.h in sched.h 2013-05-07 20:16:25 -07:00
pnode.c vfs: Fix invalid ida_remove() call 2013-05-31 15:16:33 -04:00
pnode.h Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
posix_acl.c
proc_namespace.c
read_write.c aio: don't include aio.h in sched.h 2013-05-07 20:16:25 -07:00
readdir.c new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
select.c net: poll/select low latency socket support 2013-06-25 16:35:52 -07:00
seq_file.c new helper: single_open_size() 2013-04-09 14:13:29 -04:00
signalfd.c switch signalfd{,4}() to COMPAT_SYSCALL_DEFINE 2013-03-03 22:58:46 -05:00
splice.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
stack.c
stat.c switch vfs_getattr() to struct path 2013-02-26 02:46:08 -05:00
statfs.c
super.c hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
sync.c teach SYSCALL_DEFINE<n> how to deal with long long/unsigned long long 2013-03-03 22:46:22 -05:00
timerfd.c compat: restore timerfd settime and gettime compat syscalls 2013-03-02 09:35:13 -05:00
utimes.c
xattr.c
xattr_acl.c