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authorAndrii Nakryiko <andrii@kernel.org>2021-08-15 00:05:54 -0700
committerDaniel Borkmann <daniel@iogearbox.net>2021-08-17 00:45:07 +0200
commitfb7dd8bca0139fd73d3f4a6cd257b11731317ded (patch)
tree9006ce2d61e9cd8c9fa353e5cff61d5f6da09031 /kernel/events
parent1bda52f80471260bcc7391f4e6919effedfc88d8 (diff)
downloadlinux-fb7dd8bca0139fd73d3f4a6cd257b11731317ded.tar.bz2
bpf: Refactor BPF_PROG_RUN into a function
Turn BPF_PROG_RUN into a proper always inlined function. No functional and performance changes are intended, but it makes it much easier to understand what's going on with how BPF programs are actually get executed. It's more obvious what types and callbacks are expected. Also extra () around input parameters can be dropped, as well as `__` variable prefixes intended to avoid naming collisions, which makes the code simpler to read and write. This refactoring also highlighted one extra issue. BPF_PROG_RUN is both a macro and an enum value (BPF_PROG_RUN == BPF_PROG_TEST_RUN). Turning BPF_PROG_RUN into a function causes naming conflict compilation error. So rename BPF_PROG_RUN into lower-case bpf_prog_run(), similar to bpf_prog_run_xdp(), bpf_prog_run_pin_on_cpu(), etc. All existing callers of BPF_PROG_RUN, the macro, are switched to bpf_prog_run() explicitly. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20210815070609.987780-2-andrii@kernel.org
Diffstat (limited to 'kernel/events')
-rw-r--r--kernel/events/core.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 1cb1f9b8392e..7d20743b48e1 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -9913,7 +9913,7 @@ static void bpf_overflow_handler(struct perf_event *event,
if (unlikely(__this_cpu_inc_return(bpf_prog_active) != 1))
goto out;
rcu_read_lock();
- ret = BPF_PROG_RUN(event->prog, &ctx);
+ ret = bpf_prog_run(event->prog, &ctx);
rcu_read_unlock();
out:
__this_cpu_dec(bpf_prog_active);