linux-toradex.git/samples/livepatch/livepatch-shadow-mod.c, branch v6.15-rc5

livepatch: convert timeouts to secs_to_jiffies()

2025-01-13T04:21:05+00:00

Commit b35108a51cf7 ("jiffies: Define secs_to_jiffies()") introduced
secs_to_jiffies().  As the value here is a multiple of 1000, use
secs_to_jiffies() instead of msecs_to_jiffies to avoid the multiplication.

This is converted using scripts/coccinelle/misc/secs_to_jiffies.cocci with
the following Coccinelle rules:

@@ constant C; @@

- msecs_to_jiffies(C * 1000)
+ secs_to_jiffies(C)

@@ constant C; @@

- msecs_to_jiffies(C * MSEC_PER_SEC)
+ secs_to_jiffies(C)

Link: https://lkml.kernel.org/r/20241210-converge-secs-to-jiffies-v3-18-ddfefd7e9f2a@linux.microsoft.com
Signed-off-by: Easwar Hariharan 
Reviewed-by: Christophe Leroy 
Cc: Alexander Gordeev 
Cc: Andrew Lunn 
Cc: Anna-Maria Behnsen 
Cc: Catalin Marinas 
Cc: Christian Borntraeger 
Cc: Daniel Mack 
Cc: David Airlie 
Cc: David S. Miller 
Cc: Dick Kennedy 
Cc: Eric Dumazet 
Cc: Florian Fainelli 
Cc: Greg Kroah-Hartman 
Cc: Haojian Zhuang 
Cc: Heiko Carstens 
Cc: Ilya Dryomov 
Cc: Jack Wang 
Cc: Jakub Kicinski 
Cc: James Bottomley 
Cc: James Smart 
Cc: Jaroslav Kysela 
Cc: Jeff Johnson 
Cc: Jeff Johnson 
Cc: Jens Axboe 
Cc: Jeroen de Borst 
Cc: Jiri Kosina 
Cc: Joe Lawrence 
Cc: Johan Hedberg 
Cc: Josh Poimboeuf 
Cc: Jozsef Kadlecsik 
Cc: Julia Lawall 
Cc: Kalle Valo 
Cc: Louis Peens 
Cc: Lucas De Marchi 
Cc: Luiz Augusto von Dentz 
Cc: Maarten Lankhorst 
Cc: Madhavan Srinivasan 
Cc: Marcel Holtmann 
Cc: Martin K. Petersen 
Cc: Maxime Ripard 
Cc: Michael Ellerman 
Cc: Miroslav Benes 
Cc: Naveen N Rao 
Cc: Nicholas Piggin 
Cc: Nicolas Palix 
Cc: Oded Gabbay 
Cc: Ofir Bitton 
Cc: Pablo Neira Ayuso 
Cc: Paolo Abeni 
Cc: Petr Mladek 
Cc: Praveen Kaligineedi 
Cc: Ray Jui 
Cc: Robert Jarzmik 
Cc: Rodrigo Vivi 
Cc: Roger Pau Monné 
Cc: Russell King 
Cc: Scott Branden 
Cc: Shailend Chand 
Cc: Simona Vetter 
Cc: Simon Horman 
Cc: Sven Schnelle 
Cc: Takashi Iwai 
Cc: Thomas Hellström 
Cc: Thomas Zimmermann 
Cc: Vasily Gorbik 
Cc: Xiubo Li 
Signed-off-by: Andrew Morton

livepatch/sample: Use the right type for the leaking data pointer

2020-01-17T10:12:06+00:00

The "leak" pointer, in the sample of shadow variable API, is allocated
as sizeof(int). Let's help developers and static analyzers with
understanding the code by using the appropriate pointer type.

Reported-by: Dan Carpenter 
Signed-off-by: Petr Mladek 
Reviewed-by: Joe Lawrence 
Acked-by: Miroslav Benes 
Reviewed-by: Kamalesh Babulal 
Signed-off-by: Jiri Kosina

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13

2019-05-21T09:28:45+00:00

Based on 2 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details you
  should have received a copy of the gnu general public license along
  with this program if not see http www gnu org licenses

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details [based]
  [from] [clk] [highbank] [c] you should have received a copy of the
  gnu general public license along with this program if not see http
  www gnu org licenses

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 355 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Kate Stewart 
Reviewed-by: Jilayne Lovejoy 
Reviewed-by: Steve Winslow 
Reviewed-by: Allison Randal 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190519154041.837383322@linutronix.de
Signed-off-by: Greg Kroah-Hartman

livepatch: samples: non static warnings fix

2019-01-25T15:43:35+00:00

Sparse reported warnings about non-static symbols. For the variables
a simple static attribute is fine - for the functions referenced by
livepatch via klp_func the symbol-names must be unmodified in the
symbol table and the patchable code has to be emitted. The resolution
is to attach __used attribute to the shared statically declared functions.

Link: https://lore.kernel.org/lkml/1544965657-26804-1-git-send-email-hofrat@osadl.org/
Suggested-by: Joe Lawrence 
Signed-off-by: Nicholas Mc Guire 
Acked-by: Miroslav Benes 
Signed-off-by: Jiri Kosina

livepatch: check kzalloc return values

2018-12-18T09:23:07+00:00

kzalloc() return should always be checked - notably in example code
where this may be seen as reference. On failure of allocation in
livepatch_fix1_dummy_alloc() respectively dummy_alloc() previous
allocation is freed (thanks to Petr Mladek  for
catching this) and NULL returned.

Signed-off-by: Nicholas Mc Guire 
Fixes: 439e7271dc2b ("livepatch: introduce shadow variable API")
Acked-by: Joe Lawrence 
Reviewed-by: Petr Mladek 
Acked-by: Miroslav Benes 
Signed-off-by: Jiri Kosina

livepatch: introduce shadow variable API

2017-09-14T21:06:12+00:00

Add exported API for livepatch modules:

  klp_shadow_get()
  klp_shadow_alloc()
  klp_shadow_get_or_alloc()
  klp_shadow_free()
  klp_shadow_free_all()

that implement "shadow" variables, which allow callers to associate new
shadow fields to existing data structures.  This is intended to be used
by livepatch modules seeking to emulate additions to data structure
definitions.

See Documentation/livepatch/shadow-vars.txt for a summary of the new
shadow variable API, including a few common use cases.

See samples/livepatch/livepatch-shadow-* for example modules that
demonstrate shadow variables.

[jkosina@suse.cz: fix __klp_shadow_get_or_alloc() comment as spotted by
 Josh]
Signed-off-by: Joe Lawrence 
Acked-by: Josh Poimboeuf 
Acked-by: Miroslav Benes 
Signed-off-by: Jiri Kosina