Messages in this thread | | | From | Wan Jiabing <> | Subject | [PATCH 0/3] bpf: optimize the bpf_kprobe_multi_link_attach function | Date | Thu, 12 May 2022 22:17:07 +0800 |
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This patch series tries to optimize the bpf_kporbe_multi_link_attach in bpf_trace.c
Firstly, there is only one 'error' tag to handle error code. But in one 'error' tag, there are three 'free' functions which is not efficient. So I split this one tag to three tags to make it clear.
Secondly, I simplify double 'if' statements to one statement.
Finally, coccicheck reports an opportunity for vmemdup_user. So I use vmemdup_user to make code cleaner.
Wan Jiabing (3): bpf: use 'error_xxx' tags in bpf_kprobe_multi_link_attach bpf: simplify if-if to if in bpf_kprobe_multi_link_attach bpf: use vmemdup_user instead of kvmalloc and copy_from_user
kernel/trace/bpf_trace.c | 34 +++++++++++++++------------------- 1 file changed, 15 insertions(+), 19 deletions(-)
-- 2.35.1
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