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bpf, kconfig: Add consolidated menu entry for bpf with core options

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Right now, all core BPF related options are scattered in different Kconfig
locations mainly due to historic reasons. Moving forward, lets add a proper
subsystem entry under ...

  General setup  --->
    BPF subsystem  --->

... in order to have all knobs in a single location and thus ease BPF related
configuration. Networking related bits such as sockmap are out of scope for
the general setup and therefore better suited to remain in net/Kconfig.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/f23f58765a4d59244ebd8037da7b6a6b2fb58446.1620765074.git.daniel@iogearbox.net
This commit is contained in:
Daniel Borkmann 2021-05-11 22:35:16 +02:00 • committed by Alexei Starovoitov
parent 04ea3086c4
commit b24abcff91
3 changed files with 79 additions and 67 deletions
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41
init/Kconfig
View file

@ -439,6 +439,7 @@ config AUDITSYSCALL
source "kernel/irq/Kconfig"
source "kernel/time/Kconfig"
source "kernel/bpf/Kconfig"
source "kernel/Kconfig.preempt"
menu "CPU/Task time and stats accounting"
@ -1705,46 +1706,6 @@ config KALLSYMS_BASE_RELATIVE
# syscall, maps, verifier
config BPF_LSM
bool "LSM Instrumentation with BPF"
depends on BPF_EVENTS
depends on BPF_SYSCALL
depends on SECURITY
depends on BPF_JIT
help
Enables instrumentation of the security hooks with eBPF programs for
implementing dynamic MAC and Audit Policies.
If you are unsure how to answer this question, answer N.
config BPF_SYSCALL
bool "Enable bpf() system call"
select BPF
select IRQ_WORK
select TASKS_TRACE_RCU
select BINARY_PRINTF
select NET_SOCK_MSG if INET
default n
help
Enable the bpf() system call that allows to manipulate eBPF
programs and maps via file descriptors.
config ARCH_WANT_DEFAULT_BPF_JIT
bool
config BPF_JIT_ALWAYS_ON
bool "Permanently enable BPF JIT and remove BPF interpreter"
depends on BPF_SYSCALL && HAVE_EBPF_JIT && BPF_JIT
help
Enables BPF JIT and removes BPF interpreter to avoid
speculative execution of BPF instructions by the interpreter
config BPF_JIT_DEFAULT_ON
def_bool ARCH_WANT_DEFAULT_BPF_JIT || BPF_JIT_ALWAYS_ON
depends on HAVE_EBPF_JIT && BPF_JIT
source "kernel/bpf/preload/Kconfig"
config USERFAULTFD
bool "Enable userfaultfd() system call"
depends on MMU