linux-kernel - [PATCH 0/7] vsprintf: Add %pTN to print Task Name

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Message-Id: <20241213054610.55843-1-laoar.shao@gmail.com>
Date: Fri, 13 Dec 2024 13:46:03 +0800
From: Yafang Shao <laoar.shao@...il.com>
To: torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org
Cc: linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org,
	x86@...nel.org,
	linux-snps-arc@...ts.infradead.org,
	linux-wireless@...r.kernel.org,
	intel-gfx@...ts.freedesktop.org,
	intel-xe@...ts.freedesktop.org,
	nouveau@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org,
	ocfs2-devel@...ts.linux.dev,
	Yafang Shao <laoar.shao@...il.com>
Subject: [PATCH 0/7] vsprintf: Add %pTN to print Task Name 

Since task->comm is guaranteed to be NUL-terminated, it can be printed
directly. This patch introduces a new vsnprintf format specifier, %pTN, to
print a task's name. In this specifier, p represents the task pointer, T
stands for "Task," and N denotes "Name." With this abstraction, users no
longer need to manually retrieve the task name for printing purposes.

In this patchset, all instances of get_task_comm() used for printing the
task name have been replaced with the new %pTN specifier. The raw uses of
'xyz->comm' for printouts will be addressed in a subsequent patch.

Suggested-by: Linus Torvalds <torvalds@...ux-foundation.org>
Link: https://lore.kernel.org/bpf/CAHk-=wgqrwFXK-CO8-V4fwUh5ymnUZ=wJnFyufV1dM9rC1t3Lg@mail.gmail.com 

Yafang Shao (7):
  vsprintf: Add %pTN to print task name
  kernel: Replace get_task_comm() with %pTN
  arch: Replace get_task_comm() with %pTN
  net: Replace get_task_comm() with %pTN
  security: Replace get_task_comm() with %pTN
  drivers: Repace get_task_comm() with %pTN
  fs: Use %pTN to print task name

 arch/arc/kernel/unaligned.c                    |  9 ++++-----
 arch/x86/kernel/vm86_32.c                      |  5 ++---
 drivers/accel/habanalabs/common/context.c      |  5 ++---
 .../accel/habanalabs/common/habanalabs_ioctl.c | 15 +++++----------
 .../drm/i915/display/intel_display_driver.c    | 10 ++++------
 drivers/gpu/drm/nouveau/nouveau_chan.c         |  4 +---
 drivers/gpu/drm/nouveau/nouveau_drm.c          |  7 +++----
 drivers/tty/tty_io.c                           |  5 ++---
 fs/ocfs2/cluster/netdebug.c                    |  5 ++---
 kernel/capability.c                            | 12 ++++--------
 kernel/futex/waitwake.c                        |  5 ++---
 lib/vsprintf.c                                 | 18 ++++++++++++++++++
 net/wireless/wext-core.c                       |  6 ++----
 scripts/checkpatch.pl                          |  6 ++++--
 security/yama/yama_lsm.c                       |  6 ++----
 15 files changed, 57 insertions(+), 61 deletions(-)

-- 
2.43.5