Peter Zijlstra fa73158710 perf: Fix capabilities bitfield compatibility in 'struct perf_event_mmap_page' ... Solve the problems around the broken definition of perf_event_mmap_page:: cap_usr_time and cap_usr_rdpmc fields which used to overlap, partially fixed by: 860f085b74 ("perf: Fix broken union in 'struct perf_event_mmap_page'") The problem with the fix (merged in v3.12-rc1 and not yet released officially), noticed by Vince Weaver is that the new behavior is not detectable by new user-space, and that due to the reuse of the field names it's easy to mis-compile a binary if old headers are used on a new kernel or new headers are used on an old kernel. To solve all that make this change explicit, detectable and self-contained, by iterating the ABI the following way: - Always clear bit 0, and rename it to usrpage->cap_bit0, to at least not confuse old user-space binaries. RDPMC will be marked as unavailable to old binaries but that's within the ABI, this is a capability bit. - Rename bit 1 to ->cap_bit0_is_deprecated and always set it to 1, so new libraries can reliably detect that bit 0 is deprecated and perma-zero without having to check the kernel version. - Use bits 2, 3, 4 for the newly defined, correct functionality: cap_user_rdpmc : 1, /* The RDPMC instruction can be used to read counts */ cap_user_time : 1, /* The time_* fields are used */ cap_user_time_zero : 1, /* The time_zero field is used */ - Rename all the bitfield names in perf_event.h to be different from the old names, to make sure it's not possible to mis-compile it accidentally with old assumptions. The 'size' field can then be used in the future to add new fields and it will act as a natural ABI version indicator as well. Also adjust tools/perf/ userspace for the new definitions, noticed by Adrian Hunter. Reported-by: Vince Weaver <vincent.weaver@maine.edu> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Also-Fixed-by: Adrian Hunter <adrian.hunter@intel.com> Link: http://lkml.kernel.org/n/tip-zr03yxjrpXesOzzupszqglbv@git.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>		2013-09-20 09:45:11 +02:00
..
byteorder	…
caif	caif: Remove my bouncing email address.	2013-04-23 13:25:51 -04:00
can	can: gw: add a per rule limitation of frame hops	2013-08-29 22:58:24 +02:00
cifs	cifs: Move and expand MAX_SERVER_SIZE definition	2013-09-08 14:34:22 -05:00
dvb	[media] demux.h: Remove duplicated enum	2013-04-08 06:53:15 -03:00
hdlc	…
hsi	…
isdn	…
mmc	…
netfilter	netfilter: add SYNPROXY core/target	2013-08-28 00:27:54 +02:00
netfilter_arp	…
netfilter_bridge	uapi: Convert some uses of 6 to ETH_ALEN	2013-08-02 12:33:54 -07:00
netfilter_ipv4	uapi: Convert some uses of 6 to ETH_ALEN	2013-08-02 12:33:54 -07:00
netfilter_ipv6	netfilter: fix struct ip6t_frag field description	2013-04-02 12:25:57 +02:00
nfsd	…
raid	UAPI: fix endianness conditionals in linux/raid/md_p.h	2013-03-13 15:21:49 -07:00
spi	…
sunrpc	…
tc_act	…
tc_ematch	…
usb	USB: move the definition of USB_MAXCHILDREN	2013-07-16 15:33:02 -07:00
wimax	uapi: Convert some uses of 6 to ETH_ALEN	2013-08-02 12:33:54 -07:00
Kbuild	Merge git://git.infradead.org/users/willy/linux-nvme	2013-09-07 20:19:02 -07:00
a.out.h	…
acct.h	UAPI: fix endianness conditionals in linux/acct.h	2013-03-13 15:21:48 -07:00
adb.h	…
adfs_fs.h	…
affs_hardblocks.h	…
agpgart.h	…
aio_abi.h	UAPI: fix endianness conditionals in linux/aio_abi.h	2013-03-13 15:21:48 -07:00
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	audit: Make testing for a valid loginuid explicit.	2013-05-07 22:27:15 -04:00
auto_fs.h	…
auto_fs4.h	…
auxvec.h	powerpc: Add HWCAP2 aux entry	2013-04-26 16:08:16 +10:00
ax25.h	…
b1lli.h	…
baycom.h	…
bcm933xx_hcs.h	MIPS: BCM63XX: recognize Cable Modem firmware format	2013-07-01 15:10:53 +02:00
bfs_fs.h	…
binfmts.h	…
blkpg.h	…
blktrace_api.h	…
bpqether.h	…
bsg.h	…
btrfs.h	Btrfs: use __u64 in exported user headers	2013-09-01 08:16:01 -04:00
can.h	…
capability.h	…
capi.h	…
cciss_defs.h	…
cciss_ioctl.h	…
cdrom.h	…
cgroupstats.h	…
chio.h	…
cm4000_cs.h	Omnikey Cardman 4000: pull in ioctl.h in user header	2013-08-28 19:26:38 -07:00
cn_proc.h	connector: Added coredumping event to the process connector	2013-03-20 13:23:21 -04:00
coda.h	…
coda_psdev.h	…
coff.h	…
connector.h	Drivers: hv: Add a new driver to support host initiated backup	2013-03-15 12:12:36 -07:00
const.h	linux/const.h: Add _BITUL() and _BITULL()	2013-06-25 15:50:04 -07:00
cramfs_fs.h	…
cuda.h	…
cyclades.h	…
cycx_cfm.h	…
dcbnl.h	…
dccp.h	…
dlm.h	…
dlm_device.h	…
dlm_netlink.h	…
dlm_plock.h	…
dlmconstants.h	…
dm-ioctl.h	dm: add statistics support	2013-09-05 20:46:06 -04:00
dm-log-userspace.h	…
dn.h	uapi: Convert some uses of 6 to ETH_ALEN	2013-08-02 12:33:54 -07:00
dqblk_xfs.h	quota: Add a new quotactl command Q_XGETQSTATV	2013-08-20 16:53:58 -05:00
edd.h	…
efs_fs_sb.h	…
elf-em.h	Move the EM_ARM and EM_AARCH64 definitions to uapi/linux/elf-em.h	2013-09-02 16:35:50 +01:00
elf-fdpic.h	…
elf.h	metag: ptrace: Implement NT_METAG_TLS	2013-03-27 14:37:47 +00:00
elfcore.h	…
errno.h	…
errqueue.h	…
ethtool.h	net: ethtool: disambiguate XCVR_* meaning	2013-05-27 22:42:50 -07:00
eventpoll.h	…
fadvise.h	…
falloc.h	…
fanotify.h	…
fb.h	…
fcntl.h	…
fd.h	…
fdreg.h	…
fib_rules.h	fib_rules: fix suppressor names and default values	2013-08-03 10:40:23 -07:00
fiemap.h	ext4: add support for extent pre-caching	2013-08-16 22:05:14 -04:00
filter.h	filter: add ANC_PAY_OFFSET instruction for loading payload start offset	2013-03-20 13:15:45 -04:00
firewire-cdev.h	firewire: fix libdc1394/FlyCap2 iso event regression	2013-07-27 20:24:36 +02:00
firewire-constants.h	…
flat.h	…
fs.h	fs: bump inode and dentry counters to long	2013-09-10 18:56:29 -04:00
fsl_hypervisor.h	…
fuse.h	fuse: add flag to turn on async direct IO	2013-05-01 14:37:21 +02:00
futex.h	…
gameport.h	…
gen_stats.h	net_sched: add 64bit rate estimators	2013-06-11 02:51:03 -07:00
genetlink.h	…
gfs2_ondisk.h	…
gigaset_dev.h	…
hdlc.h	…
hdlcdrv.h	…
hdreg.h	…
hid.h	…
hiddev.h	…
hidraw.h	…
hpet.h	…
hw_breakpoint.h	…
hysdn_if.h	…
i2c-dev.h	…
i2c.h	…
i2o-dev.h	…
i8k.h	…
icmp.h	…
icmpv6.h	ICMPv6: treat dest unreachable codes 5 and 6 as EACCES, not EPROTO	2013-09-03 22:11:44 -04:00
if.h	…
if_addr.h	…
if_addrlabel.h	…
if_alg.h	…
if_arcnet.h	…
if_arp.h	net: if_arp: add ARPHRD_NETLINK type	2013-06-24 16:39:05 -07:00
if_bonding.h	…
if_bridge.h	uapi: Convert some uses of 6 to ETH_ALEN	2013-08-02 12:33:54 -07:00
if_cablemodem.h	if_cablemodem.h: Add parenthesis around ioctl macros	2013-05-08 13:13:30 -07:00
if_eql.h	…
if_ether.h	net: add ETH_P_802_3_MIN	2013-03-28 01:20:42 -04:00
if_fc.h	…
if_fddi.h	…
if_frad.h	…
if_hippi.h	…
if_infiniband.h	…
if_link.h	vxlan: add ipv6 support	2013-08-31 22:30:00 -04:00
if_ltalk.h	…
if_packet.h	net: packet: add randomized fanout scheduler	2013-08-29 16:43:29 -04:00
if_phonet.h	…
if_plip.h	…
if_ppp.h	…
if_pppol2tp.h	…
if_pppox.h	pptp: fix byte order warnings	2013-08-13 15:10:22 -07:00
if_slip.h	…
if_team.h	…
if_tun.h	tun: Get skfilter layout	2013-08-21 12:21:45 -07:00
if_tunnel.h	…
if_vlan.h	…
if_x25.h	…
igmp.h	…
in.h	net: sync some IP headers with glibc	2013-09-04 13:12:43 -04:00
in6.h	net: sync some IP headers with glibc	2013-09-04 13:12:43 -04:00
in_route.h	…
inet_diag.h	…
inotify.h	…
input.h	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2013-09-15 07:13:39 -04:00
ioctl.h	…
ip.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2013-08-26 16:37:08 -04:00
ip6_tunnel.h	…
ip_vs.h	ipvs: SH fallback and L4 hashing	2013-06-26 18:01:46 +09:00
ipc.h	…
ipmi.h	ipmi: remove superfluous kernel/userspace explanation	2013-02-27 19:10:21 -08:00
ipmi_msgdefs.h	…
ipsec.h	…
ipv6.h	ipv6: drop fragmented ndisc packets by default (RFC 6980)	2013-08-29 15:32:08 -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	…
kd.h	…
kdev_t.h	…
kernel-page-flags.h	…
kernel.h	…
kernelcapi.h	…
kexec.h	…
keyboard.h	…
keyctl.h	…
kvm.h	KVM: PPC: reserve a capability number for multitce support	2013-08-26 15:36:58 +03:00
kvm_para.h	kvm uapi: Add KICK_CPU and PV_UNHALT definition to uapi	2013-08-26 12:46:01 +03:00
l2tp.h	…
libc-compat.h	net: sync some IP headers with glibc	2013-09-04 13:12:43 -04:00
limits.h	…
llc.h	…
loop.h	…
lp.h	…
magic.h	hostfs: move HOSTFS_SUPER_MAGIC to <linux/magic.h>	2013-05-04 15:48:44 -04:00
major.h	…
map_to_7segment.h	…
matroxfb.h	…
mdio.h	…
media.h	[media] media: add support for decoder as one of media entity types	2013-03-21 14:05:31 -03:00
mei.h	…
mempolicy.h	…
meye.h	…
mii.h	…
minix_fs.h	…
mman.h	…
mmtimer.h	…
module.h	…
mqueue.h	…
mroute.h	…
mroute6.h	…
msdos_fs.h	fatfs: add FAT_IOCTL_GET_VOLUME_ID	2013-07-09 10:33:25 -07:00
msg.h	…
mtio.h	…
n_r3964.h	…
nbd.h	nbd: support FLUSH requests	2013-02-27 19:10:22 -08:00
ncp.h	…
ncp_fs.h	…
ncp_mount.h	…
ncp_no.h	…
neighbour.h	vxlan: generalize forwarding tables	2013-03-17 12:23:46 -04:00
net.h	…
net_dropmon.h	…
net_tstamp.h	…
netconf.h	…
netdevice.h	…
netfilter.h	…
netfilter_arp.h	…
netfilter_bridge.h	…
netfilter_decnet.h	…
netfilter_ipv4.h	…
netfilter_ipv6.h	…
netlink.h	netlink: mmaped netlink: ring setup	2013-04-19 14:57:57 -04:00
netlink_diag.h	netlink: add RX/TX-ring support to netlink diag	2013-04-19 14:57:58 -04:00
netrom.h	…
nfc.h	NFC: netlink: Add result of firmware operation to completion event	2013-08-14 01:12:58 +02:00
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: add flags to cfg80211_rx_mgmt()	2013-08-23 16:06:03 +02:00
nubus.h	…
nvme.h	NVMe: Update nvme_id_power_state with latest spec	2013-09-03 16:32:26 -04:00
nvram.h	…
omap3isp.h	…
omapfb.h	…
oom.h	…
openvswitch.h	openvswitch: Add SCTP support	2013-08-26 14:03:13 -07:00
packet_diag.h	sock_diag: allow to dump bpf filters	2013-04-29 13:21:30 -04:00
param.h	…
parport.h	…
patchkey.h	…
pci.h	…
pci_regs.h	PCI: Add offsets of PCIe capability registers	2013-08-28 11:28:10 -06:00
perf_event.h	perf: Fix capabilities bitfield compatibility in 'struct perf_event_mmap_page'	2013-09-20 09:45:11 +02:00
personality.h	…
pfkeyv2.h	…
pg.h	…
phantom.h	…
phonet.h	…
pkt_cls.h	…
pkt_sched.h	pkt_sched: fq: Fair Queue packet scheduler	2013-08-29 21:38:31 -04:00
pktcdvd.h	…
pmu.h	…
poll.h	…
posix_types.h	…
ppdev.h	…
ppp-comp.h	…
ppp-ioctl.h	…
ppp_defs.h	…
pps.h	…
prctl.h	…
ptp_clock.h	…
ptrace.h	ptrace: add ability to get/set signal-blocked mask	2013-07-03 16:08:01 -07:00
qnx4_fs.h	…
qnxtypes.h	…
quota.h	…
radeonfb.h	…
random.h	…
raw.h	…
rds.h	…
reboot.h	…
reiserfs_fs.h	…
reiserfs_xattr.h	xattr: Constify ->name member of "struct xattr".	2013-07-25 19:30:03 +10:00
resource.h	…
rfkill.h	rfkill: Add NFC to the list of supported radios	2013-04-12 16:54:38 +02:00
romfs_fs.h	…
rose.h	…
route.h	…
rtc.h	…
rtnetlink.h	tcp: introduce a per-route knob for quick ack	2013-06-19 23:06:51 -07:00
scc.h	…
sched.h	…
screen_info.h	…
sctp.h	net: sctp: trivial: update mailing list address	2013-07-24 17:53:38 -07:00
sdla.h	…
seccomp.h	…
securebits.h	…
selinux_netlink.h	…
sem.h	…
serial.h	…
serial_core.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile	2013-09-06 11:14:33 -07:00
serial_reg.h	Revert "OMAP: UART: Keep the TX fifo full when possible"	2013-08-27 16:02:18 -07:00
serio.h	…
shm.h	…
signal.h	…
signalfd.h	…
snmp.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2013-08-16 15:37:26 -07:00
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	…
sysinfo.h	…
taskstats.h	…
tcp.h	tcp: TCP_NOTSENT_LOWAT socket option	2013-07-24 17:54:48 -07:00
tcp_metrics.h	…
telephony.h	…
termios.h	…
time.h	timekeeping: Add CLOCK_TAI clockid	2013-03-22 16:19:59 -07:00
times.h	…
timex.h	…
tiocl.h	…
tipc.h	tipc: update code comments to reflect new uapi header path	2013-06-17 15:53:00 -07:00
tipc_config.h	tipc: update code comments to reflect new uapi header path	2013-06-17 15:53:00 -07:00
toshiba.h	…
tty.h	…
tty_flags.h	…
types.h	…
udf_fs_i.h	…
udp.h	…
uhid.h	HID: uhid: use generic hidinput_input_event()	2013-07-31 10:33:05 +02:00
uinput.h	…
uio.h	…
ultrasound.h	…
un.h	…
unistd.h	…
unix_diag.h	net: fix *_DIAG_MAX constants	2013-03-21 12:36:33 -04:00
usbdevice_fs.h	…
utime.h	…
utsname.h	…
uuid.h	…
uvcvideo.h	…
v4l2-common.h	…
v4l2-controls.h	[media] V4L: Add VP8 encoder controls	2013-08-18 07:13:36 -03:00
v4l2-dv-timings.h	[media] v4l2-dv-timings.h: remove duplicate V4L2_DV_BT_DMT_1366X768P60	2013-08-18 08:13:51 -03:00
v4l2-mediabus.h	[media] v4l: Add media format codes for ARGB8888 and AYUV8888 on 32-bit busses	2013-08-18 07:23:07 -03:00
v4l2-subdev.h	…
veth.h	…
vfio.h	vfio-pci: PCI hot reset interface	2013-09-04 11:28:04 -06:00
vhost.h	tcm_vhost: header split up	2013-05-02 13:40:15 +03:00
videodev2.h	[media] videodev2.h: defines to calculate blanking and frame sizes	2013-08-18 08:17:35 -03:00
virtio_9p.h	…
virtio_balloon.h	virtio: do not export "u16" and "u64" to userspace	2013-04-02 16:42:58 +10:30
virtio_blk.h	…
virtio_config.h	virtio: VIRTIO_F_ANY_LAYOUT feature	2013-07-09 10:47:45 +09:30
virtio_console.h	Simple warning fix for module sections. If too late to pull, no big deal.	2013-07-03 13:09:06 -07:00
virtio_ids.h	caif_virtio: Introduce caif over virtio	2013-03-20 14:06:06 +10:30
virtio_net.h	uapi: Convert some uses of 6 to ETH_ALEN	2013-08-02 12:33:54 -07:00
virtio_pci.h	virtio_pci: better macro exported in uapi	2013-05-20 12:08:09 +09:30
virtio_ring.h	…
virtio_rng.h	…
vm_sockets.h	VSOCK: Split vm_sockets.h into kernel/uapi	2013-03-08 12:24:48 -05:00
vt.h	…
wait.h	…
wanrouter.h	…
watchdog.h	…
wimax.h	…
wireless.h	…
x25.h	…
xattr.h	hfsplus: add osx.* prefix for handling namespace of Mac OS X extended attributes	2013-02-27 19:10:10 -08:00
xfrm.h	xfrm: allow to avoid copying DSCP during encapsulation	2013-03-06 07:02:45 +01:00