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From: KP Singh <kpsingh@chromium.org>
To: Jiri Olsa <jolsa@kernel.org>, Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andriin@fb.com>
Cc: netdev@vger.kernel.org, bpf@vger.kernel.org,
Song Liu <songliubraving@fb.com>, Yonghong Song <yhs@fb.com>,
Martin KaFai Lau <kafai@fb.com>, David Miller <davem@redhat.com>,
John Fastabend <john.fastabend@gmail.com>,
Wenbo Zhang <ethercflow@gmail.com>,
Brendan Gregg <bgregg@netflix.com>,
Florent Revest <revest@chromium.org>,
Al Viro <viro@zeniv.linux.org.uk>
Subject: Re: [RFC PATCH v11 bpf-next 10/14] bpf: Add d_path helper
Date: Tue, 18 Aug 2020 02:14:44 +0200 [thread overview]
Message-ID: <c99e9d34-a807-93eb-4a2f-34c79793628b@chromium.org> (raw)
In-Reply-To: <20200809150302.686149-11-jolsa@kernel.org>
On 09.08.20 17:02, Jiri Olsa wrote:
> Adding d_path helper function that returns full path for
> given 'struct path' object, which needs to be the kernel
> BTF 'path' object. The path is returned in buffer provided
> 'buf' of size 'sz' and is zero terminated.
>
> bpf_d_path(&file->f_path, buf, size);
>
> The helper calls directly d_path function, so there's only
> limited set of function it can be called from. Adding just
> very modest set for the start.
>
> Updating also bpf.h tools uapi header and adding 'path' to
> bpf_helpers_doc.py script.
>
> Acked-by: Andrii Nakryiko <andriin@fb.com>
Acked-by: KP Singh <kpsingh@google.com>
Thank you so much for working on this!
> Signed-off-by: Jiri Olsa <jolsa@kernel.org>
> ---
[...]
> /* integer value in 'imm' field of BPF_CALL instruction selects which helper
>
next prev parent reply other threads:[~2020-08-18 0:14 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-09 15:02 [RFC PATCH v11 bpf-next 00/14] " Jiri Olsa
2020-08-09 15:02 ` [RFC PATCH v11 bpf-next 01/14] tools resolve_btfids: Add size check to get_id function Jiri Olsa
2020-08-09 15:02 ` [RFC PATCH v11 bpf-next 02/14] tools resolve_btfids: Add support for set symbols Jiri Olsa
2020-08-09 15:02 ` [RFC PATCH v11 bpf-next 03/14] bpf: Move btf_resolve_size into __btf_resolve_size Jiri Olsa
2020-08-09 15:02 ` [RFC PATCH v11 bpf-next 04/14] bpf: Add elem_id pointer as argument to __btf_resolve_size Jiri Olsa
2020-08-09 15:02 ` [RFC PATCH v11 bpf-next 05/14] bpf: Add type_id " Jiri Olsa
2020-08-09 15:02 ` [RFC PATCH v11 bpf-next 06/14] bpf: Remove recursion call in btf_struct_access Jiri Olsa
2020-08-09 15:02 ` [RFC PATCH v11 bpf-next 07/14] bpf: Factor btf_struct_access function Jiri Olsa
2020-08-09 15:02 ` [RFC PATCH v11 bpf-next 08/14] bpf: Add btf_struct_ids_match function Jiri Olsa
2020-08-11 6:02 ` Andrii Nakryiko
2020-08-09 15:02 ` [RFC PATCH v11 bpf-next 09/14] bpf: Add BTF_SET_START/END macros Jiri Olsa
2020-08-09 15:02 ` [RFC PATCH v11 bpf-next 10/14] bpf: Add d_path helper Jiri Olsa
2020-08-18 0:14 ` KP Singh [this message]
2020-08-09 15:02 ` [RFC PATCH v11 bpf-next 11/14] bpf: Update .BTF_ids section in btf.rst with sets info Jiri Olsa
2020-08-09 15:03 ` [RFC PATCH v11 bpf-next 12/14] selftests/bpf: Add verifier test for d_path helper Jiri Olsa
2020-08-09 15:03 ` [RFC PATCH v11 bpf-next 13/14] selftests/bpf: Add " Jiri Olsa
2020-08-09 15:03 ` [RFC PATCH v11 bpf-next 14/14] selftests/bpf: Add set test to resolve_btfids Jiri Olsa
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