Martin KaFai Lau 271de525e1 bpf: Remove prog->active check for bpf_lsm and bpf_iter ... The commit 64696c40d0 ("bpf: Add __bpf_prog_{enter,exit}_struct_ops for struct_ops trampoline") removed prog->active check for struct_ops prog. The bpf_lsm and bpf_iter is also using trampoline. Like struct_ops, the bpf_lsm and bpf_iter have fixed hooks for the prog to attach. The kernel does not call the same hook in a recursive way. This patch also removes the prog->active check for bpf_lsm and bpf_iter. A later patch has a test to reproduce the recursion issue for a sleepable bpf_lsm program. This patch appends the '_recur' naming to the existing enter and exit functions that track the prog->active counter. New __bpf_prog_{enter,exit}[_sleepable] function are added to skip the prog->active tracking. The '_struct_ops' version is also removed. It also moves the decision on picking the enter and exit function to the new bpf_trampoline_{enter,exit}(). It returns the '_recur' ones for all tracing progs to use. For bpf_lsm, bpf_iter, struct_ops (no prog->active tracking after 64696c40d0), and bpf_lsm_cgroup (no prog->active tracking after 69fd337a97), it will return the functions that don't track the prog->active. Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Link: https://lore.kernel.org/r/20221025184524.3526117-2-martin.lau@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>		2022-10-25 23:11:46 -07:00
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bpf_jit_comp.c	bpf: Remove prog->active check for bpf_lsm and bpf_iter	2022-10-25 23:11:46 -07:00
bpf_jit.h	bpf, arm64: Implement bpf_arch_text_poke() for arm64	2022-07-11 21:08:01 +02:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00