android_kernel_xiaomi_sm8450/include
Martin KaFai Lau dc4bb0e235 bpf: Introduce bpf_prog ID
This patch generates an unique ID for each BPF_PROG_LOAD-ed prog.
It is worth to note that each BPF_PROG_LOAD-ed prog will have
a different ID even they have the same bpf instructions.

The ID is generated by the existing idr_alloc_cyclic().
The ID is ranged from [1, INT_MAX).  It is allocated in cyclic manner,
so an ID will get reused every 2 billion BPF_PROG_LOAD.

The bpf_prog_alloc_id() is done after bpf_prog_select_runtime()
because the jit process may have allocated a new prog.  Hence,
we need to ensure the value of pointer 'prog' will not be changed
any more before storing the prog to the prog_idr.

After bpf_prog_select_runtime(), the prog is read-only.  Hence,
the id is stored in 'struct bpf_prog_aux'.

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Alexei Starovoitov <ast@fb.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-06 15:41:22 -04:00
..
acpi More ACPI updates for v4.12-rc1 2017-05-10 09:35:42 -07:00
asm-generic Kbuild UAPI header export updates for v4.12 2017-05-10 20:45:36 -07:00
clocksource
crypto
drm mm, vmalloc: use __GFP_HIGHMEM implicitly 2017-05-08 17:15:13 -07:00
dt-bindings Sort of on the quieter side this time, which is probably due more 2017-05-10 13:38:18 -07:00
keys
kvm KVM: arm/arm64: Fix bug when registering redist iodevs 2017-05-18 11:18:12 +02:00
linux bpf: Introduce bpf_prog ID 2017-06-06 15:41:22 -04:00
math-emu
media
memory
misc
net net: sched: introduce helper to identify gact trap action 2017-06-06 12:45:23 -04:00
pcmcia
ras
rdma smc_diag.h: fix include from userland 2017-05-11 00:18:39 +09:00
rxrpc rxrpc: Implement service upgrade 2017-06-05 14:30:49 +01:00
scsi Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2017-05-12 11:44:13 -07:00
soc net/wan/fsl_ucc_hdlc: add hdlc-bus support 2017-05-18 10:28:39 -04:00
sound
target
trace rxrpc: Add service upgrade support for client connections 2017-06-05 14:30:49 +01:00
uapi net: sched: introduce a TRAP control action 2017-06-06 12:45:23 -04:00
video uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
xen