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From: Yafang Shao <laoar.shao@gmail.com>
To: akpm@linux-foundation.org
Cc: netdev@vger.kernel.org, bpf@vger.kernel.org,
	linux-perf-users@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	oliver.sang@intel.com, lkp@intel.com,
	Yafang Shao <laoar.shao@gmail.com>,
	Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
	Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>,
	Alexei Starovoitov <alexei.starovoitov@gmail.com>,
	Andrii Nakryiko <andrii.nakryiko@gmail.com>,
	Michal Miroslaw <mirq-linux@rere.qmqm.pl>,
	Peter Zijlstra <peterz@infradead.org>,
	Steven Rostedt <rostedt@goodmis.org>,
	Matthew Wilcox <willy@infradead.org>,
	David Hildenbrand <david@redhat.com>,
	Al Viro <viro@zeniv.linux.org.uk>,
	Kees Cook <keescook@chromium.org>, Petr Mladek <pmladek@suse.com>
Subject: [PATCH v2 0/7] task comm cleanups
Date: Sat, 20 Nov 2021 11:27:31 +0000	[thread overview]
Message-ID: <20211120112738.45980-1-laoar.shao@gmail.com> (raw)

This patchset is part of the patchset "extend task comm from 16 to 24"[1].
Now we have different opinion that dynamically allocates memory to store
kthread's long name into a separate pointer, so I decide to take the useful
cleanups apart from the original patchset and send it separately[2].

These useful cleanups can make the usage around task comm less
error-prone. Furthermore, it will be useful if we want to extend task
comm in the future.

[1]. https://lore.kernel.org/lkml/20211101060419.4682-1-laoar.shao@gmail.com/
[2]. https://lore.kernel.org/lkml/CALOAHbAx55AUo3bm8ZepZSZnw7A08cvKPdPyNTf=E_tPqmw5hw@mail.gmail.com/

Changes since v1:
- improve the subject and description
- add comment to explain the hard-coded 16 in patch #4

Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>
Cc: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc: Andrii Nakryiko <andrii.nakryiko@gmail.com>
Cc: Michal Miroslaw <mirq-linux@rere.qmqm.pl>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Kees Cook <keescook@chromium.org>
Cc: Petr Mladek <pmladek@suse.com>

Yafang Shao (7):
  fs/exec: replace strlcpy with strscpy_pad in __set_task_comm
  fs/exec: replace strncpy with strscpy_pad in __get_task_comm
  drivers/infiniband: replace open-coded string copy with get_task_comm
  fs/binfmt_elf: replace open-coded string copy with get_task_comm
  samples/bpf/test_overhead_kprobe_kern: replace bpf_probe_read_kernel
    with bpf_probe_read_kernel_str to get task comm
  tools/bpf/bpftool/skeleton: replace bpf_probe_read_kernel with
    bpf_probe_read_kernel_str to get task comm
  tools/testing/selftests/bpf: replace open-coded 16 with TASK_COMM_LEN

 drivers/infiniband/hw/qib/qib.h                       |  2 +-
 drivers/infiniband/hw/qib/qib_file_ops.c              |  2 +-
 fs/binfmt_elf.c                                       |  2 +-
 fs/exec.c                                             |  5 +++--
 include/linux/elfcore-compat.h                        |  5 +++++
 include/linux/elfcore.h                               |  5 +++++
 include/linux/sched.h                                 |  9 +++++++--
 samples/bpf/offwaketime_kern.c                        |  4 ++--
 samples/bpf/test_overhead_kprobe_kern.c               | 11 ++++++-----
 samples/bpf/test_overhead_tp_kern.c                   |  5 +++--
 tools/bpf/bpftool/skeleton/pid_iter.bpf.c             |  4 ++--
 .../testing/selftests/bpf/progs/test_stacktrace_map.c |  6 +++---
 tools/testing/selftests/bpf/progs/test_tracepoint.c   |  6 +++---
 13 files changed, 42 insertions(+), 24 deletions(-)

-- 
2.17.1


             reply	other threads:[~2021-11-20 11:28 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-20 11:27 Yafang Shao [this message]
2021-11-20 11:27 ` [PATCH v2 1/7] fs/exec: replace strlcpy with strscpy_pad in __set_task_comm Yafang Shao
2021-11-20 11:27 ` [PATCH v2 2/7] fs/exec: replace strncpy with strscpy_pad in __get_task_comm Yafang Shao
2021-11-20 11:27 ` [PATCH v2 3/7] drivers/infiniband: replace open-coded string copy with get_task_comm Yafang Shao
2021-11-20 11:27 ` [PATCH v2 4/7] fs/binfmt_elf: " Yafang Shao
2021-11-29 16:01   ` Steven Rostedt
2021-11-30  3:01     ` Yafang Shao
2021-11-30 14:22       ` Steven Rostedt
2021-11-30 15:53         ` Yafang Shao
2021-11-20 11:27 ` [PATCH v2 5/7] samples/bpf/test_overhead_kprobe_kern: replace bpf_probe_read_kernel with bpf_probe_read_kernel_str to get task comm Yafang Shao
2021-11-20 11:27 ` [PATCH v2 6/7] tools/bpf/bpftool/skeleton: " Yafang Shao
2021-11-20 11:27 ` [PATCH v2 7/7] tools/testing/selftests/bpf: replace open-coded 16 with TASK_COMM_LEN Yafang Shao
2021-11-29 10:13   ` Sven Schnelle
2021-11-29 13:41     ` Yafang Shao
2021-11-29 14:21       ` Sven Schnelle
2021-11-29 14:32         ` David Hildenbrand
2021-11-29 14:38           ` Sven Schnelle
2021-11-29 15:33             ` Yafang Shao
2021-11-29 16:07               ` Steven Rostedt
2021-11-29 16:08                 ` Steven Rostedt
2021-11-29 15:28         ` Yafang Shao
2021-11-29 17:30     ` Steven Rostedt
2021-11-29 17:56       ` Sven Schnelle
2021-11-30  3:03       ` Yafang Shao
2021-11-30 14:23         ` Steven Rostedt
2021-11-30 15:46           ` Yafang Shao

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