linux/tools
Daniel Borkmann 6c4fc209fc bpf: remove useless version check for prog load
Existing libraries and tracing frameworks work around this kernel
version check by automatically deriving the kernel version from
uname(3) or similar such that the user does not need to do it
manually; these workarounds also make the version check useless
at the same time.

Moreover, most other BPF tracing types enabling bpf_probe_read()-like
functionality have /not/ adapted this check, and in general these
days it is well understood anyway that all the tracing programs are
not stable with regards to future kernels as kernel internal data
structures are subject to change from release to release.

Back at last netconf we discussed [0] and agreed to remove this
check from bpf_prog_load() and instead document it here in the uapi
header that there is no such guarantee for stable API for these
programs.

  [0] http://vger.kernel.org/netconf2018_files/DanielBorkmann_netconf2018.pdf

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Quentin Monnet <quentin.monnet@netronome.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-12-17 13:41:35 -08:00
..
accounting delayacct: track delays from thrashing cache pages 2018-10-26 16:26:32 -07:00
arch tools arch x86: Update tools's copy of cpufeatures.h 2018-11-19 12:27:07 -08:00
bpf tools: bpftool: fix -Wmissing declaration warnings 2018-12-15 01:31:49 +01:00
build tools build feature: Check if get_current_dir_name() is available 2018-11-19 12:12:17 -08:00
cgroup
crypto crypto: tools - Add cryptostat userspace 2018-09-28 12:46:26 +08:00
firewire
gpio
hv tools: hv: fcopy: set 'error' in case an unknown operation was requested 2018-09-30 08:49:55 -07:00
iio
include bpf: remove useless version check for prog load 2018-12-17 13:41:35 -08:00
kvm/kvm_stat tools/kvm_stat: cut down decimal places in update interval dialog 2018-10-01 15:40:59 +02:00
laptop
leds
lib bpf: Remove !func_info and !line_info check from test_btf and bpftool 2018-12-13 12:16:31 +01:00
memory-model tools/memory-model: Add more LKMM limitations 2018-10-02 10:28:04 +02:00
nfsd
objtool objtool: Fix segfault in .cold detection with -ffunction-sections 2018-11-20 18:59:00 +01:00
pci tools: PCI: Change pcitest compiling process 2018-10-03 11:19:52 +01:00
pcmcia
perf perf tools beauty ioctl: Support new ISO7816 commands 2018-11-19 12:38:50 -08:00
power tools cpupower: Override CFLAGS assignments 2018-11-06 08:54:16 -07:00
scripts
spi
testing bpf: improve stacksafe state comparison 2018-12-15 01:28:32 +01:00
thermal/tmon
time
usb usbip: tools: fix atoi() on non-null terminated string 2018-10-18 19:44:39 +02:00
virtio
vm
wmi
Makefile tools: PCI: Change pcitest compiling process 2018-10-03 11:19:52 +01:00