linux-kernel - [PATCH 0/3] kernel/pid: Remove default pid

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Message-ID: <20240408145819.8787-1-mkoutny@suse.com>
Date: Mon,  8 Apr 2024 16:58:16 +0200
From: Michal Koutný <mkoutny@...e.com>
To: linux-kernel@...r.kernel.org,
	linux-trace-kernel@...r.kernel.org
Cc: Steven Rostedt <rostedt@...dmis.org>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Christian Brauner <brauner@...nel.org>,
	Oleg Nesterov <oleg@...hat.com>,
	Kent Overstreet <kent.overstreet@...ux.dev>,
	Kees Cook <keescook@...omium.org>,
	Michal Koutný <mkoutny@...e.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Tycho Andersen <tandersen@...flix.com>,
	Jens Axboe <axboe@...nel.dk>,
	Aleksa Sarai <cyphar@...har.com>
Subject: [PATCH 0/3] kernel/pid: Remove default pid_max value

TL;DR excerpt from commit 02/03:

	The kernel provides mechanisms, while it should not imply policies --
	default pid_max seems to be an example of the policy that does not fit
	all. At the same time pid_max must have some value assigned, so use the
	end of the allowed range -- pid_max_max.

More details are in that commit's message. The other two commits are
related preparation and less related refresh in code that somewhat
references pid_max.

Michal Koutný (3):
  tracing: Remove dependency of saved_cmdlines_buffer on PID_MAX_DEFAULT
  kernel/pid: Remove default pid_max value
  tracing: Compare pid_max against pid_list capacity

 include/linux/pid.h               |  4 ++--
 include/linux/threads.h           | 15 ++++-----------
 kernel/pid.c                      |  8 +++-----
 kernel/trace/pid_list.c           |  6 +++---
 kernel/trace/pid_list.h           |  4 ++--
 kernel/trace/trace_sched_switch.c | 11 ++++++-----
 6 files changed, 20 insertions(+), 28 deletions(-)


base-commit: fec50db7033ea478773b159e0e2efb135270e3b7
-- 
2.44.0