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| author | Jiri Olsa <jolsa@redhat.com> | 2021-07-14 11:43:54 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2021-07-16 02:16:06 +0200 |
| commit | 1e37392cccdea94da635e3c6d16b21865806f619 (patch) | |
| tree | 1aae46e49ea79ade58734a32fbb1e9a2386ccbd9 /kernel/groups.c | |
| parent | bpf, x86: Store caller's ip in trampoline stack (diff) | |
| download | linux-1e37392cccdea94da635e3c6d16b21865806f619.tar.xz linux-1e37392cccdea94da635e3c6d16b21865806f619.zip | |
bpf: Enable BPF_TRAMP_F_IP_ARG for trampolines with call_get_func_ip
Enabling BPF_TRAMP_F_IP_ARG for trampolines that actually need it.
The BPF_TRAMP_F_IP_ARG adds extra 3 instructions to trampoline code
and is used only by programs with bpf_get_func_ip helper, which is
added in following patch and sets call_get_func_ip bit.
This patch ensures that BPF_TRAMP_F_IP_ARG flag is used only for
trampolines that have programs with call_get_func_ip set.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210714094400.396467-3-jolsa@kernel.org
Diffstat (limited to 'kernel/groups.c')
0 files changed, 0 insertions, 0 deletions