linux-stable/include/uapi/linux
Manfred Spraul 0050ee059f ipc/msg: increase MSGMNI, remove scaling
SysV can be abused to allocate locked kernel memory.  For most systems, a
small limit doesn't make sense, see the discussion with regards to SHMMAX.

Therefore: increase MSGMNI to the maximum supported.

And: If we ignore the risk of locking too much memory, then an automatic
scaling of MSGMNI doesn't make sense.  Therefore the logic can be removed.

The code preserves auto_msgmni to avoid breaking any user space applications
that expect that the value exists.

Notes:
1) If an administrator must limit the memory allocations, then he can set
MSGMNI as necessary.

Or he can disable sysv entirely (as e.g. done by Android).

2) MSGMAX and MSGMNB are intentionally not increased, as these values are used
to control latency vs. throughput:
If MSGMNB is large, then msgsnd() just returns and more messages can be queued
before a task switch to a task that calls msgrcv() is forced.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Rafael Aquini <aquini@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-13 12:42:52 -08:00
..
byteorder
caif
can can: dev: Consolidate and unify state change handling 2014-12-07 21:22:09 +01:00
cifs
dvb
genwqe GenWQE: Update author information 2014-09-23 23:15:46 -07:00
hdlc
hsi
isdn
mmc
netfilter netfilter: ipset: Alignment problem between 64bit kernel 32bit userspace 2014-12-03 12:43:35 +01:00
netfilter_arp uapi: netfilter_arp: use __u8 instead of u_int8_t 2014-08-20 15:13:08 +02:00
netfilter_bridge netfilter: kill ulog targets 2014-06-25 19:28:43 +02:00
netfilter_ipv4 netfilter: kill ulog targets 2014-06-25 19:28:43 +02:00
netfilter_ipv6
nfsd sunrpc: eliminate RPC_DEBUG 2014-11-24 17:31:46 -05:00
raid md: discard PRINT_RAID_DEBUG ioctl 2014-10-14 13:08:29 +11:00
spi
sunrpc
tc_act tc_act: export uapi header file 2014-12-09 13:34:10 -05:00
tc_ematch
usb usb: gadget: f_fs: virtual endpoint address mapping 2014-09-16 09:58:21 -05:00
wimax
a.out.h
acct.h
adb.h
adfs_fs.h
affs_hardblocks.h
agpgart.h
aio_abi.h
apm_bios.h
arcfb.h
atalk.h
atm.h
atm_eni.h
atm_he.h
atm_idt77105.h
atm_nicstar.h
atm_tcp.h
atm_zatm.h
atmapi.h
atmarp.h
atmbr2684.h
atmclip.h
atmdev.h
atmioc.h
atmlec.h
atmmpc.h
atmppp.h
atmsap.h
atmsvc.h
audit.h Merge git://git.infradead.org/users/eparis/audit 2014-10-19 16:25:56 -07:00
auto_fs.h
auto_fs4.h
auxvec.h
ax25.h
b1lli.h
baycom.h
bcache.h
bcm933xx_hcs.h
bfs_fs.h
binfmts.h
blkpg.h
blktrace_api.h
bpf.h bpf: verifier: add checks for BPF_ABS | BPF_IND instructions 2014-12-05 21:47:32 -08:00
bpf_common.h net: filter: move common defines into bpf_common.h 2014-10-14 16:06:45 -04:00
bpqether.h
bsg.h block SG_IO: add SG_FLAG_Q_AT_HEAD flag 2014-07-01 10:48:05 -06:00
btrfs.h Btrfs: return failure if btrfs_dev_replace_finishing() failed 2014-11-20 17:14:28 -08:00
can.h can: unify identifiers to ensure unique include processing 2014-05-19 09:38:24 +02:00
capability.h audit: add netlink audit protocol bind to check capabilities on multicast join 2014-04-22 21:42:27 -04:00
capi.h isdn: capi: fix "CAPI_VERSION" comment 2014-03-20 14:55:18 +01:00
cciss_defs.h
cciss_ioctl.h
cdrom.h
cgroupstats.h
chio.h
cm4000_cs.h
cn_proc.h
coda.h
coda_psdev.h
coff.h
connector.h
const.h
cramfs_fs.h
cuda.h
cyclades.h
cycx_cfm.h
dcbnl.h dcbnl : Fix misleading dcb_app->priority explanation 2014-07-30 17:21:05 -07:00
dccp.h
dlm.h
dlm_device.h
dlm_netlink.h
dlm_plock.h
dlmconstants.h dlm: adopt orphan locks 2014-11-19 14:48:02 -06:00
dm-ioctl.h dm: enhance internal suspend and resume interface 2014-11-19 12:31:17 -05:00
dm-log-userspace.h
dn.h
dqblk_xfs.h
edd.h
efs_fs_sb.h
elf-em.h Add ELF machine define for Nios2 2014-12-08 12:55:57 +08:00
elf-fdpic.h
elf.h arm64: ptrace: add NT_ARM_SYSTEM_CALL regset 2014-11-28 10:19:49 +00:00
elfcore.h
errno.h
errqueue.h net-timestamp: ACK timestamp for bytestreams 2014-08-05 16:35:54 -07:00
ethtool.h ethtool: Support for configurable RSS hash function 2014-12-08 21:07:10 -05:00
eventpoll.h
fadvise.h
falloc.h fs: Introduce FALLOC_FL_ZERO_RANGE flag for fallocate 2014-03-13 19:07:42 +11:00
fanotify.h
fb.h
fcntl.h shm: add sealing API 2014-08-08 15:57:31 -07:00
fd.h
fdreg.h
fib_rules.h
fiemap.h
filter.h net: filter: move common defines into bpf_common.h 2014-10-14 16:06:45 -04:00
firewire-cdev.h
firewire-constants.h
flat.h
fou.h gue: Receive side for Generic UDP Encapsulation 2014-10-03 16:53:33 -07:00
fs.h vfs: add RENAME_WHITEOUT 2014-10-24 00:14:37 +02:00
fsl_hypervisor.h
fuse.h fuse: add FUSE_NO_OPEN_SUPPORT flag to INIT 2014-07-22 16:37:43 +02:00
futex.h
gameport.h
gen_stats.h
genetlink.h
gfs2_ondisk.h GFS2: remove transaction glock 2014-05-14 10:04:34 +01:00
gigaset_dev.h
hash_info.h
hdlc.h
hdlcdrv.h
hdreg.h
hid.h
hiddev.h
hidraw.h
hpet.h
hsr_netlink.h
hw_breakpoint.h
hyperv.h Drivers: hv: util: Properly pack the data for file copy functionality 2014-09-23 23:31:21 -07:00
hysdn_if.h
i2c-dev.h
i2c.h
i2o-dev.h
i8k.h i8k: uapi: Introduce define for new highest fan speed 2014-07-09 16:41:36 -07:00
icmp.h
icmpv6.h
if.h
if_addr.h
if_addrlabel.h
if_alg.h
if_arcnet.h
if_arp.h
if_bonding.h
if_bridge.h bridge: remove mode BRIDGE_MODE_SWDEV 2014-12-09 18:24:47 -05:00
if_cablemodem.h
if_eql.h
if_ether.h net: dsa: reduce number of protocol hooks 2014-08-27 22:59:39 -07:00
if_fc.h
if_fddi.h FDDI: Reformat <linux/if_fddi.h> for 8-character tabs 2014-04-27 19:08:06 -04:00
if_frad.h
if_hippi.h
if_infiniband.h
if_link.h bridge: add new brport flag LEARNING_SYNC 2014-12-02 20:01:23 -08:00
if_ltalk.h
if_packet.h packet: remove deprecated syststamp timestamp 2014-07-29 11:39:50 -07:00
if_phonet.h
if_plip.h
if_ppp.h
if_pppol2tp.h
if_pppox.h
if_slip.h
if_team.h
if_tun.h tun: add VNET_LE flag 2014-12-09 12:05:30 +02:00
if_tunnel.h gue: TX support for using remote checksum offload option 2014-11-05 16:30:03 -05:00
if_vlan.h
if_x25.h
igmp.h
in.h
in6.h net: reallocate new socket option number for IPV6_AUTOFLOWLABEL 2014-08-06 15:25:01 -07:00
in_route.h
inet_diag.h net: tcp: add DCTCP congestion control algorithm 2014-09-29 00:13:10 -04:00
inotify.h
input.h HID: add keyboard input assist hid usages 2014-10-20 21:03:58 +02:00
ioctl.h
ip.h
ip6_tunnel.h
ip_vs.h ipvs: Add destination address family to netlink interface 2014-09-16 09:03:33 +09:00
ipc.h
ipmi.h
ipmi_msgdefs.h
ipsec.h
ipv6.h net: ipv6: Add a sysctl to make optimistic addresses useful candidates 2014-10-29 15:11:36 -04:00
ipv6_route.h
ipx.h
irda.h
irqnr.h
isdn.h
isdn_divertif.h
isdn_ppp.h
isdnif.h
iso_fs.h
ivtv.h
ivtvfb.h
ixjuser.h
jffs2.h
joystick.h
Kbuild Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-12-11 14:27:06 -08:00
kd.h
kdev_t.h
kernel-page-flags.h mm/balloon_compaction: add vmstat counters and kpageflags bit 2014-10-09 22:26:01 -04:00
kernel.h
kernelcapi.h
kexec.h kexec: implementation of new syscall kexec_file_load 2014-08-08 15:57:32 -07:00
keyboard.h
keyctl.h
kvm.h KVM: device: add simple registration mechanism for kvm_device_ops 2014-09-17 13:10:08 +02:00
kvm_para.h MIPS: Add functions for hypervisor call 2014-05-30 21:01:11 +02:00
l2tp.h l2tp: Add support for zero IPv6 checksums 2014-05-23 16:28:53 -04:00
libc-compat.h xattr: guard against simultaneous glibc header inclusion 2014-04-03 16:21:06 -07:00
limits.h
llc.h
loop.h
lp.h
magic.h
major.h
map_to_7segment.h
matroxfb.h
mdio.h
media-bus-format.h [media] Move mediabus format definition to a more standard place 2014-11-14 17:47:47 -02:00
media.h
mei.h
memfd.h shm: add memfd_create() syscall 2014-08-08 15:57:31 -07:00
mempolicy.h
meye.h
mic_common.h
mic_ioctl.h
mii.h
minix_fs.h
mman.h
mmtimer.h
module.h
mpls.h
mqueue.h
mroute.h
mroute6.h
msdos_fs.h
msg.h ipc/msg: increase MSGMNI, remove scaling 2014-12-13 12:42:52 -08:00
mtio.h
n_r3964.h
nbd.h
ncp.h
ncp_fs.h
ncp_mount.h
ncp_no.h
neighbour.h bridge: add API to notify bridge driver of learned FBD on offloaded device 2014-12-02 20:01:22 -08:00
net.h
net_dropmon.h
net_tstamp.h net-timestamp: allow reading recv cmsg on errqueue with origin tstamp 2014-12-08 20:20:48 -05:00
netconf.h
netdevice.h net: add name_assign_type netdev attribute 2014-07-15 16:12:01 -07:00
netfilter.h
netfilter_arp.h
netfilter_bridge.h
netfilter_decnet.h
netfilter_ipv4.h
netfilter_ipv6.h
netlink.h
netlink_diag.h
netrom.h
nfc.h NFC: NCI: Fix max length of General Bytes in ATR_RES 2014-12-02 22:59:28 +01:00
nfs.h
nfs2.h
nfs3.h
nfs4.h
nfs4_mount.h
nfs_fs.h
nfs_idmap.h
nfs_mount.h
nfsacl.h
nl80211.h cfg80211: clean up beacon loss CQM event 2014-11-26 20:56:42 +01:00
nubus.h
nvme.h NVMe: Define Log Page constants 2014-06-13 10:53:49 -04:00
nvram.h
omap3isp.h
omapfb.h
oom.h
openvswitch.h openvswitch: Add support for OVS_FLOW_ATTR_PROBE. 2014-11-09 18:58:44 -08:00
packet_diag.h
param.h
parport.h
patchkey.h
pci.h
pci_regs.h Merge branches 'pci/aer' and 'pci/virtualization' into next 2014-10-01 12:30:58 -06:00
perf_event.h perf: Add ability to sample machine state on interrupt 2014-11-16 11:41:57 +01:00
personality.h
pfkeyv2.h
pg.h
phantom.h
phonet.h
pkt_cls.h
pkt_sched.h
pktcdvd.h
pmu.h
poll.h
posix_types.h
ppdev.h
ppp-comp.h
ppp-ioctl.h
ppp_defs.h
pps.h
prctl.h x86, mpx: On-demand kernel allocation of bounds tables 2014-11-18 00:58:53 +01:00
psci.h ARM/ARM64: KVM: Add common header for PSCI related defines 2014-04-30 04:18:57 -07:00
ptp_clock.h ptp: introduce programmable pins. 2014-03-21 14:21:13 -04:00
ptrace.h
qnx4_fs.h
qnxtypes.h
quota.h
radeonfb.h
random.h random: introduce getrandom(2) system call 2014-08-05 16:41:22 -04:00
raw.h
rds.h
reboot.h
reiserfs_fs.h
reiserfs_xattr.h
resource.h
rfkill.h
romfs_fs.h
rose.h
route.h
rtc.h
rtnetlink.h rtnetlink: add babel protocol recognition 2014-11-10 12:05:59 -05:00
scc.h
sched.h sched: Update comments about CLONE_NEWUTS and CLONE_NEWIPC 2014-11-16 10:58:53 +01:00
screen_info.h
sctp.h net: sctp: implement rfc6458, 8.1.31. SCTP_DEFAULT_SNDINFO support 2014-07-16 14:40:04 -07:00
sdla.h
seccomp.h seccomp: implement SECCOMP_FILTER_FLAG_TSYNC 2014-07-18 12:13:40 -07:00
securebits.h
selinux_netlink.h
sem.h ipc/sem.c: increase SEMMSL, SEMMNI, SEMOPM 2014-12-13 12:42:52 -08:00
serial.h
serial_core.h ARM: meson: serial: add MesonX SoC on-chip uart driver 2014-09-08 16:12:40 -07:00
serial_reg.h serial/uart/8250: Add tunable RX interrupt trigger I/F of FIFO buffers 2014-07-17 18:23:35 -07:00
serio.h Input: add support for Wacom protocol 4 serial tablets 2014-07-20 14:33:23 -07:00
shm.h ipc,shm: document new limits in the uapi header 2014-06-06 16:08:14 -07:00
signal.h
signalfd.h
smiapp.h [media] smiapp: Add driver-specific test pattern menu item definitions 2014-08-21 15:25:11 -05:00
snmp.h tcp_cubic: add SNMP counters to track how effective is Hystart 2014-12-09 14:58:23 -05:00
sock_diag.h
socket.h
sockios.h
som.h
sonet.h
sonypi.h
sound.h
soundcard.h
stat.h
stddef.h
string.h
suspend_ioctls.h
swab.h
synclink.h
sysctl.h kernel: add panic_on_warn 2014-12-10 17:41:10 -08:00
sysinfo.h
target_core_user.h target: Add a user-passthrough backstore 2014-10-03 11:15:20 -07:00
taskstats.h
tcp.h
tcp_metrics.h
telephony.h
termios.h
time.h
times.h
timex.h
tiocl.h
tipc.h tipc: add ioctl to fetch link names 2014-04-26 12:13:24 -04:00
tipc_config.h tipc: bump max configurable window size 2014-06-25 18:03:41 -07:00
tipc_netlink.h tipc: add name table dump to new netlink api 2014-11-21 15:01:32 -05:00
toshiba.h
tty.h
tty_flags.h
types.h
udf_fs_i.h
udp.h net: Make enabling of zero UDP6 csums more restrictive 2014-05-23 16:28:53 -04:00
uhid.h HID: uhid: report to user-space whether reports are numbered 2014-08-25 03:28:08 -05:00
uinput.h Input: uinput - add UI_GET_VERSION ioctl 2014-07-21 14:30:42 -07:00
uio.h
ultrasound.h
un.h
unistd.h
unix_diag.h
usbdevice_fs.h
usbip.h usbip: move usbip kernel code out of staging 2014-08-25 10:40:06 -07:00
utime.h
utsname.h
uuid.h
uvcvideo.h
v4l2-common.h [media] v4l: Add V4L2_SEL_TGT_NATIVE_SIZE selection target 2014-12-04 12:37:01 -02:00
v4l2-controls.h [media] v4l: Add camera pan/tilt speed controls 2014-09-21 20:23:39 -03:00
v4l2-dv-timings.h Revert "[media] v4l2-dv-timings: fix a sparse warning" 2014-10-24 08:58:09 -02:00
v4l2-mediabus.h [media] v4l2-mediabus: improve colorspace support 2014-12-01 15:34:55 -02:00
v4l2-subdev.h [media] Make use of the new media_bus_format definitions 2014-11-14 17:51:18 -02:00
veth.h
vfio.h vfio/iommu_type1: add new VFIO_TYPE1_NESTING_IOMMU IOMMU type 2014-09-29 10:06:19 -06:00
vhost.h
videodev2.h [media] v4l: Add input and output capability flags for native size setting 2014-12-04 12:38:09 -02:00
virtio_9p.h
virtio_balloon.h
virtio_blk.h virtio_blk: v1.0 support 2014-12-09 12:05:26 +02:00
virtio_config.h virtio: make VIRTIO_F_VERSION_1 a transport bit 2014-12-09 12:06:32 +02:00
virtio_console.h virtio_console: virtio 1.0 support 2014-12-09 12:06:32 +02:00
virtio_ids.h
virtio_net.h virtio_net: v1.0 endianness 2014-12-09 12:05:26 +02:00
virtio_pci.h
virtio_ring.h virtio: memory access APIs 2014-12-09 12:05:24 +02:00
virtio_rng.h
virtio_scsi.h virtio_scsi: export to userspace 2014-12-09 12:06:31 +02:00
virtio_types.h virtio: memory access APIs 2014-12-09 12:05:24 +02:00
vm_sockets.h
vsp1.h
vt.h
wait.h
wanrouter.h
watchdog.h
wil6210_uapi.h wil6210: atomic I/O for the card memory 2014-10-02 14:23:14 -04:00
wimax.h
wireless.h
x25.h
xattr.h xattr: fix check for simultaneous glibc header inclusion 2014-08-29 16:28:16 -07:00
xfrm.h xfrm: configure policy hash table thresholds by netlink 2014-09-02 13:37:56 +02:00
zorro.h
zorro_ids.h