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From: Hao Luo <haoluo@google.com>
To: Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>
Cc: Andrii Nakryiko <andrii.nakryiko@gmail.com>,
	Alexei Starovoitov <alexei.starovoitov@gmail.com>,
	daniel@iogearbox.net, dwarves@vger.kernel.org, yhs@fb.com,
	Hao Luo <haoluo@google.com>
Subject: [PATCH 0/2] pahole: Make encoding percpu vars into BTF optional.
Date: Fri, 18 Sep 2020 13:40:56 -0700
Message-ID: <20200918204058.1030519-1-haoluo@google.com> (raw)

Previous commit f3d9054ba8ff ("btf_encoder: Teach pahole to store
percpu variables in vmlinux BTF.") introduced a feature in btf_encoder
that encodes global symbols in BTF. However, this feature is not
protected by any flag. In order to avoid surprises after Pahole v1.18
rolls out, make this feature off by default and enable only upon
request. On the kernel side, we can add a Kconfig to enable this
new capability on an opt-in pattern.

Also as a refactor, introduce '--btf_encode_force' to replace the
old '--force' and '-j' option that is used to forcefully emit BTF.

Hao Luo (2):
  btf_encoder: Make encoding vars into BTF optional.
  btf_encoder: Introduce option '--btf_encode_force'

 btf_encoder.c |  5 ++++-
 btf_encoder.h |  2 +-
 pahole.c      | 22 +++++++++++++++++-----
 3 files changed, 22 insertions(+), 7 deletions(-)


             reply index

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-18 20:40 Hao Luo [this message]
2020-09-18 20:40 ` [PATCH 1/2] btf_encoder: Make encoding " Hao Luo
2020-09-18 21:24   ` Arnaldo Carvalho de Melo
2020-09-18 21:26     ` Hao Luo
2020-09-18 21:40       ` Arnaldo Carvalho de Melo
2020-09-18 20:40 ` [PATCH 2/2] btf_encoder: Introduce option '--btf_encode_force' Hao Luo
2020-09-19  0:57 ` [PATCH 0/2] pahole: Make encoding percpu vars into BTF optional Alexei Starovoitov
2020-09-19  4:00   ` Hao Luo
2020-09-21 12:27     ` Arnaldo Carvalho de Melo

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