linux/scripts/coccinelle, branch v6.17

coccinelle: misc: secs_to_jiffies: implement context and report modes

2025-07-20T02:08:25Z

As requested by Ricardo and Jakub, implement report and context modes for the secs_to_jiffies Coccinelle script. While here, add the option to look for opportunities to use secs_to_jiffies() in headers. Link: https://lkml.kernel.org/r/20250703225145.152288-1-eahariha@linux.microsoft.com Signed-off-by: Easwar Hariharan Closes: https://lore.kernel.org/all/20250129-secs_to_jiffles-v1-1-35a5e16b9f03@chromium.org/ Closes: https://lore.kernel.org/all/20250221162107.409ae333@kernel.org/ Tested-by: Ricardo Ribalda Cc: Julia Lawall Cc: Nicolas Palix Cc: Jakub Kicinski Cc: Ricardo Ribalda Signed-off-by: Andrew Morton

Merge tag 'mm-nonmm-stable-2025-03-30-18-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2025-04-01T17:06:52Z

Pull non-MM updates from Andrew Morton: - The series "powerpc/crash: use generic crashkernel reservation" from Sourabh Jain changes powerpc's kexec code to use more of the generic layers. - The series "get_maintainer: report subsystem status separately" from Vlastimil Babka makes some long-requested improvements to the get_maintainer output. - The series "ucount: Simplify refcounting with rcuref_t" from Sebastian Siewior cleans up and optimizing the refcounting in the ucount code. - The series "reboot: support runtime configuration of emergency hw_protection action" from Ahmad Fatoum improves the ability for a driver to perform an emergency system shutdown or reboot. - The series "Converge on using secs_to_jiffies() part two" from Easwar Hariharan performs further migrations from msecs_to_jiffies() to secs_to_jiffies(). - The series "lib/interval_tree: add some test cases and cleanup" from Wei Yang permits more userspace testing of kernel library code, adds some more tests and performs some cleanups. - The series "hung_task: Dump the blocking task stacktrace" from Masami Hiramatsu arranges for the hung_task detector to dump the stack of the blocking task and not just that of the blocked task. - The series "resource: Split and use DEFINE_RES*() macros" from Andy Shevchenko provides some cleanups to the resource definition macros. - Plus the usual shower of singleton patches - please see the individual changelogs for details. * tag 'mm-nonmm-stable-2025-03-30-18-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (77 commits) mailmap: consolidate email addresses of Alexander Sverdlin fs/procfs: fix the comment above proc_pid_wchan() relay: use kasprintf() instead of fixed buffer formatting resource: replace open coded variant of DEFINE_RES() resource: replace open coded variants of DEFINE_RES_*_NAMED() resource: replace open coded variant of DEFINE_RES_NAMED_DESC() resource: split DEFINE_RES_NAMED_DESC() out of DEFINE_RES_NAMED() samples: add hung_task detector mutex blocking sample hung_task: show the blocker task if the task is hung on mutex kexec_core: accept unaccepted kexec segments' destination addresses watchdog/perf: optimize bytes copied and remove manual NUL-termination lib/interval_tree: fix the comment of interval_tree_span_iter_next_gap() lib/interval_tree: skip the check before go to the right subtree lib/interval_tree: add test case for span iteration lib/interval_tree: add test case for interval_tree_iter_xxx() helpers lib/rbtree: add random seed lib/rbtree: split tests lib/rbtree: enable userland test suite for rbtree related data structure checkpatch: describe --min-conf-desc-length scripts/gdb/symbols: determine KASLR offset on s390 ...

coccinelle: misc: secs_to_jiffies: Patch expressions too

2025-03-17T06:24:15Z

Patch series "Converge on using secs_to_jiffies() part two", v3. This is the second series that converts users of msecs_to_jiffies() that either use the multiply pattern of either of: - msecs_to_jiffies(N*1000) or - msecs_to_jiffies(N*MSEC_PER_SEC) where N is a constant or an expression, to avoid the multiplication. The conversion is made with Coccinelle with the secs_to_jiffies() script in scripts/coccinelle/misc. Attention is paid to what the best change can be rather than restricting to what the tool provides. This patch (of 16): Teach the script to suggest conversions for timeout patterns where the arguments to msecs_to_jiffies() are expressions as well. Link: https://lkml.kernel.org/r/20250225-converge-secs-to-jiffies-part-two-v3-0-a43967e36c88@linux.microsoft.com Link: https://lkml.kernel.org/r/20250225-converge-secs-to-jiffies-part-two-v3-1-a43967e36c88@linux.microsoft.com Signed-off-by: Easwar Hariharan Cc: Mark Brown Cc: Carlos Maiolino Cc: Chris Mason Cc: Christoph Hellwig Cc: Damien Le Maol Cc: "Darrick J. Wong" Cc: David Sterba Cc: Dick Kennedy Cc: Dongsheng Yang Cc: Fabio Estevam Cc: Frank Li Cc: Hans de Goede Cc: Henrique de Moraes Holschuh Cc: Ilpo Jarvinen Cc: Ilya Dryomov Cc: James Bottomley Cc: James Smart Cc: Jaroslav Kysela Cc: Jason Gunthorpe Cc: Jens Axboe Cc: Josef Bacik Cc: Julia Lawall Cc: Kalesh Anakkur Purayil Cc: Keith Busch Cc: Leon Romanovsky Cc: "Martin K. Petersen" Cc: Nicolas Palix Cc: Niklas Cassel Cc: Oded Gabbay Cc: Takashi Iwai Cc: Sagi Grimberg Cc: Sascha Hauer Cc: Sebastian Reichel Cc: Selvin Thyparampil Xavier Cc: Shawn Guo Cc: Shyam-sundar S-k Cc: Takashi Iwai Cc: Xiubo Li Cc: Carlos Maiolino Cc: Marc Kleine-Budde Signed-off-by: Andrew Morton

coccinelle: Add missing (GE)NL_SET_ERR_MSG_* to strings ending with newline test

2025-02-28T02:11:37Z

Add missing (GE)NL_SET_ERR_MSG_*() variants to the list of macros checked for strings ending with a newline. Reviewed-by: Tariq Toukan Signed-off-by: Gal Pressman Reviewed-by: Michal Swiatkowski Link: https://patch.msgid.link/20250226093904.6632-2-gal@nvidia.com Signed-off-by: Jakub Kicinski

coccinelle: misc: add secs_to_jiffies script

2025-01-13T04:21:01Z

This script finds and suggests conversions of timeout patterns that result in seconds-denominated timeouts to use the new secs_to_jiffies() API in include/linux/jiffies.h for better readability. Link: https://lkml.kernel.org/r/20241210-converge-secs-to-jiffies-v3-2-ddfefd7e9f2a@linux.microsoft.com Signed-off-by: Easwar Hariharan Suggested-by: Anna-Maria Behnsen Cc: Alexander Gordeev Cc: Andrew Lunn Cc: Catalin Marinas Cc: Christian Borntraeger Cc: Christophe Leroy 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

scripts/nsdeps: get 'make nsdeps' working again

2024-12-03T16:22:25Z

Since commit cdd30ebb1b9f ("module: Convert symbol namespace to string literal"), when MODULE_IMPORT_NS() is missing, 'make nsdeps' inserts pointless code: MODULE_IMPORT_NS("ns"); Here, "ns" is not a namespace, but the variable in the semantic patch. It must not be quoted. Instead, a string literal must be passed to Coccinelle. Fixes: cdd30ebb1b9f ("module: Convert symbol namespace to string literal") Signed-off-by: Masahiro Yamada Signed-off-by: Linus Torvalds

module: Convert symbol namespace to string literal

2024-12-02T19:34:44Z

Clean up the existing export namespace code along the same lines of commit 33def8498fdd ("treewide: Convert macro and uses of __section(foo) to __section("foo")") and for the same reason, it is not desired for the namespace argument to be a macro expansion itself. Scripted using git grep -l -e MODULE_IMPORT_NS -e EXPORT_SYMBOL_NS | while read file; do awk -i inplace ' /^#define EXPORT_SYMBOL_NS/ { gsub(/__stringify$ns$/, "ns"); print; next; } /^#define MODULE_IMPORT_NS/ { gsub(/__stringify$ns$/, "ns"); print; next; } /MODULE_IMPORT_NS/ { $0 = gensub(/MODULE_IMPORT_NS$([^)]*)$/, "MODULE_IMPORT_NS(\"\\1\")", "g"); } /EXPORT_SYMBOL_NS/ { if ($0 ~ /(EXPORT_SYMBOL_NS[^(]*)$([^,]+),/) { if ($0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)$/ && $0 !~ /(EXPORT_SYMBOL_NS[^(]*)/ && $0 !~ /^my/) { getline line; gsub(/[[:space:]]*\\$/, ""); gsub(/[[:space:]]/, "", line); $0 = $0 " " line; } $0 = gensub(/(EXPORT_SYMBOL_NS[^(]*)$([^,]+), ([^)]+)$/, "\\1(\\2, \"\\3\")", "g"); } } { print }' $file; done Requested-by: Masahiro Yamada Signed-off-by: Peter Zijlstra (Intel) Link: https://mail.google.com/mail/u/2/#inbox/FMfcgzQXKWgMmjdFwwdsfgxzKpVHWPlc Acked-by: Greg KH Signed-off-by: Linus Torvalds

Reduce Coccinelle choices in string_choices.cocci

2024-09-28T19:33:11Z

The isomorphism neg_if_exp negates the test of a ?: conditional, making it unnecessary to have an explicit case for a negated test with the branches inverted. At the same time, we can disable neg_if_exp in cases where a different API function may be more suitable for a negated test. Finally, in the non-patch cases, E matches an expression with parentheses around it, so there is no need to mention () explicitly in the pattern. The () are still needed in the patch cases, because we want to drop them, if they are present. Signed-off-by: Julia Lawall

coccinelle: Remove unnecessary parentheses for only one possible change.

2024-09-28T19:23:31Z

The parentheses are only needed if there is a disjunction, ie a set of possible changes. If there is only one pattern, we can remove these parentheses. Just like the format: - x + y not: ( - x + y ) Signed-off-by: Hongbo Li Signed-off-by: Julia Lawall

coccinelle: Add rules to find str_yes_no() replacements

2024-09-28T19:23:21Z

As other rules done, we add rules for str_yes_no() to check the relative opportunities. Signed-off-by: Hongbo Li Signed-off-by: Julia Lawall