From: Andrew Morton <akpm@linux-foundation.org>
To: aklimov@redhat.com, akpm@linux-foundation.org,
andriy.shevchenko@linux.intel.com, arnd@arndb.de,
dalias@libc.org, dennis@kernel.org, dsterba@suse.com,
geert@linux-m68k.org, glaubitz@physik.fu-berlin.de,
jianpeng.ma@intel.com, joe@perches.com, jpoimboe@redhat.com,
linux-mm@kvack.org, linux@rasmusvillemoes.dk,
mm-commits@vger.kernel.org, richard.weiyang@linux.alibaba.com,
sbrivio@redhat.com, torvalds@linux-foundation.org,
wsa+renesas@sang-engineering.com, ysato@users.osdn.me,
yury.norov@gmail.com
Subject: [patch 14/91] tools: disable -Wno-type-limits
Date: Thu, 06 May 2021 18:02:42 -0700 [thread overview]
Message-ID: <20210507010242.ydCofRv4z%akpm@linux-foundation.org> (raw)
In-Reply-To: <20210506180126.03e1baee7ca52bedb6cc6003@linux-foundation.org>
From: Yury Norov <yury.norov@gmail.com>
Subject: tools: disable -Wno-type-limits
Patch series "lib/find_bit: fast path for small bitmaps", v6.
Bitmap operations are much simpler and faster in case of small bitmaps
which fit into a single word. In linux/bitmap.c we have a machinery that
allows compiler to replace actual function call with a few instructions if
bitmaps passed into the function are small and their size is known at
compile time.
find_*_bit() API lacks this functionality; but users will benefit from it
a lot. One important example is cpumask subsystem when NR_CPUS <=
BITS_PER_LONG.
This patch (of 12):
GENMASK(h, l) may be passed with unsigned types. In such case,
type-limits warning is generated for example in case of GENMASK(h, 0).
Link: https://lkml.kernel.org/r/20210401003153.97325-1-yury.norov@gmail.com
Link: https://lkml.kernel.org/r/20210401003153.97325-2-yury.norov@gmail.com
Signed-off-by: Yury Norov <yury.norov@gmail.com>
Acked-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Alexey Klimov <aklimov@redhat.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: David Sterba <dsterba@suse.com>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Jianpeng Ma <jianpeng.ma@intel.com>
Cc: Joe Perches <joe@perches.com>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Rich Felker <dalias@libc.org>
Cc: Stefano Brivio <sbrivio@redhat.com>
Cc: Wei Yang <richard.weiyang@linux.alibaba.com>
Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>
Cc: Yoshinori Sato <ysato@users.osdn.me>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
tools/scripts/Makefile.include | 1 +
1 file changed, 1 insertion(+)
--- a/tools/scripts/Makefile.include~tools-disable-wno-type-limits
+++ a/tools/scripts/Makefile.include
@@ -38,6 +38,7 @@ EXTRA_WARNINGS += -Wswitch-enum
EXTRA_WARNINGS += -Wundef
EXTRA_WARNINGS += -Wwrite-strings
EXTRA_WARNINGS += -Wformat
+EXTRA_WARNINGS += -Wno-type-limits
# Makefiles suck: This macro sets a default value of $(2) for the
# variable named by $(1), unless the variable has been set by
_
next prev parent reply other threads:[~2021-05-07 1:02 UTC|newest]
Thread overview: 119+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-07 1:01 incoming Andrew Morton
2021-05-07 1:02 ` [patch 01/91] alpha: eliminate old-style function definitions Andrew Morton
2021-05-07 1:02 ` [patch 02/91] alpha: csum_partial_copy.c: add function prototypes from <net/checksum.h> Andrew Morton
2021-05-07 1:02 ` [patch 03/91] fs/proc/generic.c: fix incorrect pde_is_permanent check Andrew Morton
2021-05-07 1:02 ` [patch 04/91] proc: save LOC in __xlate_proc_name() Andrew Morton
2021-05-07 2:24 ` Linus Torvalds
2021-05-07 1:02 ` [patch 05/91] proc: mandate ->proc_lseek in "struct proc_ops" Andrew Morton
2021-05-07 1:02 ` [patch 06/91] proc: delete redundant subset=pid check Andrew Morton
2021-05-07 1:02 ` [patch 07/91] selftests: proc: test subset=pid Andrew Morton
2021-05-07 1:02 ` [patch 08/91] proc/sysctl: fix function name error in comments Andrew Morton
2021-05-07 1:02 ` [patch 09/91] include: remove pagemap.h from blkdev.h Andrew Morton
2021-05-07 1:02 ` [patch 10/91] kernel.h: drop inclusion in bitmap.h Andrew Morton
2021-05-07 1:02 ` [patch 11/91] linux/profile.h: remove unnecessary declaration Andrew Morton
2021-05-07 1:02 ` [patch 12/91] kernel/async.c: fix pr_debug statement Andrew Morton
2021-05-07 1:02 ` [patch 13/91] kernel/cred.c: make init_groups static Andrew Morton
2021-05-07 1:02 ` Andrew Morton [this message]
2021-05-07 1:02 ` [patch 15/91] tools: bitmap: sync function declarations with the kernel Andrew Morton
2021-05-07 1:02 ` [patch 16/91] tools: sync BITMAP_LAST_WORD_MASK() macro " Andrew Morton
2021-05-07 1:02 ` [patch 17/91] arch: rearrange headers inclusion order in asm/bitops for m68k, sh and h8300 Andrew Morton
2021-05-07 1:02 ` [patch 18/91] lib: extend the scope of small_const_nbits() macro Andrew Morton
2021-05-07 1:03 ` [patch 19/91] tools: sync small_const_nbits() macro with the kernel Andrew Morton
2021-05-07 1:03 ` [patch 20/91] lib: inline _find_next_bit() wrappers Andrew Morton
2021-05-07 1:03 ` [patch 21/91] tools: sync find_next_bit implementation Andrew Morton
2021-05-07 1:03 ` [patch 22/91] lib: add fast path for find_next_*_bit() Andrew Morton
2021-05-07 1:03 ` [patch 23/91] lib: add fast path for find_first_*_bit() and find_last_bit() Andrew Morton
2021-05-07 1:03 ` [patch 24/91] tools: sync lib/find_bit implementation Andrew Morton
2021-05-07 1:03 ` [patch 25/91] MAINTAINERS: add entry for the bitmap API Andrew Morton
2021-05-07 1:03 ` [patch 26/91] lib/bch.c: fix a typo in the file bch.c Andrew Morton
2021-05-07 1:03 ` [patch 27/91] lib: fix inconsistent indenting in process_bit1() Andrew Morton
2021-05-07 1:03 ` [patch 28/91] lib/list_sort.c: fix typo in function description Andrew Morton
2021-05-07 1:03 ` [patch 29/91] lib/genalloc.c: fix a typo Andrew Morton
2021-05-07 1:03 ` [patch 30/91] lib: crc8: pointer to data block should be const Andrew Morton
2021-05-07 1:03 ` [patch 31/91] lib: stackdepot: turn depot_lock spinlock to raw_spinlock Andrew Morton
2021-05-07 1:03 ` [patch 32/91] lib/percpu_counter: tame kernel-doc compile warning Andrew Morton
2021-05-07 1:03 ` [patch 33/91] lib/genalloc: add parameter description to fix doc " Andrew Morton
2021-05-07 1:03 ` [patch 34/91] lib: parser: clean up kernel-doc Andrew Morton
2021-05-07 1:03 ` [patch 35/91] include/linux/compat.h: remove unneeded declaration from COMPAT_SYSCALL_DEFINEx() Andrew Morton
2021-05-07 1:03 ` [patch 36/91] checkpatch: warn when missing newline in return sysfs_emit() formats Andrew Morton
2021-05-07 1:03 ` [patch 37/91] checkpatch: exclude four preprocessor sub-expressions from MACRO_ARG_REUSE Andrew Morton
2021-05-07 1:04 ` [patch 38/91] checkpatch: improve ALLOC_ARRAY_ARGS test Andrew Morton
2021-05-07 1:04 ` [patch 39/91] kselftest: introduce new epoll test case Andrew Morton
2021-05-07 1:04 ` [patch 40/91] fs/epoll: restore waking from ep_done_scan() Andrew Morton
2021-05-07 1:04 ` [patch 41/91] isofs: fix fall-through warnings for Clang Andrew Morton
2021-05-07 1:04 ` [patch 42/91] fs/nilfs2: fix misspellings using codespell tool Andrew Morton
2021-05-07 1:04 ` [patch 43/91] nilfs2: fix typos in comments Andrew Morton
2021-05-07 1:04 ` [patch 44/91] hpfs: replace one-element array with flexible-array member Andrew Morton
2021-05-07 1:04 ` [patch 45/91] do_wait: make PIDTYPE_PID case O(1) instead of O(n) Andrew Morton
2021-05-07 1:04 ` [patch 46/91] kernel/fork.c: simplify copy_mm() Andrew Morton
2021-05-07 1:04 ` [patch 47/91] kernel/fork.c: fix typos Andrew Morton
2021-05-07 1:04 ` [patch 48/91] kernel/crash_core: add crashkernel=auto for vmcore creation Andrew Morton
2021-05-07 7:25 ` Linus Torvalds
2021-05-08 3:13 ` Baoquan He
2021-05-08 3:29 ` Baoquan He
2021-05-07 8:16 ` David Hildenbrand
2021-05-08 8:51 ` Baoquan He
2021-05-08 9:22 ` David Hildenbrand
2021-05-10 4:53 ` Baoquan He
2021-05-10 8:32 ` David Hildenbrand
2021-05-10 10:43 ` Baoquan He
2021-05-10 11:01 ` David Hildenbrand
2021-05-10 11:44 ` Dave Young
2021-05-10 11:56 ` David Hildenbrand
2021-05-11 13:36 ` Baoquan He
2021-05-11 16:31 ` Mike Rapoport
2021-05-11 17:07 ` David Hildenbrand
2021-05-12 14:51 ` Baoquan He
2021-05-12 15:07 ` David Hildenbrand
2021-05-13 5:04 ` Baoquan He
2021-05-12 19:03 ` Kairui Song
2021-05-17 8:22 ` David Hildenbrand
2021-05-18 8:49 ` Baoquan He
2021-05-18 8:51 ` David Hildenbrand
2021-05-18 9:24 ` Dave Young
2021-05-12 14:13 ` Baoquan He
2021-05-12 7:42 ` Dave Young
2021-05-07 1:04 ` [patch 49/91] kexec: add kexec reboot string Andrew Morton
2021-05-07 1:04 ` [patch 50/91] kernel: kexec_file: fix error return code of kexec_calculate_store_digests() Andrew Morton
2021-05-07 1:04 ` [patch 51/91] kexec: dump kmessage before machine_kexec Andrew Morton
2021-05-07 1:04 ` [patch 52/91] gcov: combine common code Andrew Morton
2021-05-07 1:04 ` [patch 53/91] gcov: simplify buffer allocation Andrew Morton
2021-05-07 1:04 ` [patch 54/91] gcov: use kvmalloc() Andrew Morton
2021-05-07 1:04 ` [patch 55/91] gcov: clang: drop support for clang-10 and older Andrew Morton
2021-05-07 1:04 ` [patch 56/91] smp: kernel/panic.c - silence warnings Andrew Morton
2021-05-07 1:05 ` [patch 57/91] delayacct: clear right task's flag after blkio completes Andrew Morton
2021-05-07 1:05 ` [patch 58/91] gdb: lx-symbols: store the abspath() Andrew Morton
2021-05-07 1:05 ` [patch 59/91] scripts/gdb: document lx_current is only supported by x86 Andrew Morton
2021-05-07 1:05 ` [patch 60/91] scripts/gdb: add lx_current support for arm64 Andrew Morton
2021-05-07 1:05 ` [patch 61/91] kernel/resource: make walk_system_ram_res() find all busy IORESOURCE_SYSTEM_RAM resources Andrew Morton
2021-05-07 1:05 ` [patch 62/91] kernel/resource: make walk_mem_res() find all busy IORESOURCE_MEM resources Andrew Morton
2021-05-07 1:05 ` [patch 63/91] kernel/resource: remove first_lvl / siblings_only logic Andrew Morton
2021-05-07 1:05 ` [patch 64/91] kernel/resource: allow region_intersects users to hold resource_lock Andrew Morton
2021-05-07 1:05 ` [patch 65/91] kernel/resource: refactor __request_region to allow external locking Andrew Morton
2021-05-07 1:05 ` [patch 66/91] kernel/resource: fix locking in request_free_mem_region Andrew Morton
2021-05-07 1:05 ` [patch 67/91] selftests: remove duplicate include Andrew Morton
2021-05-07 1:05 ` [patch 68/91] kernel/async.c: stop guarding pr_debug() statements Andrew Morton
2021-05-07 1:05 ` [patch 69/91] kernel/async.c: remove async_unregister_domain() Andrew Morton
2021-05-07 1:05 ` [patch 70/91] init/initramfs.c: do unpacking asynchronously Andrew Morton
2021-05-07 1:05 ` [patch 71/91] modules: add CONFIG_MODPROBE_PATH Andrew Morton
2021-05-07 1:05 ` [patch 72/91] ipc/sem.c: mundane typo fixes Andrew Morton
2021-05-07 1:05 ` [patch 73/91] mm: fix some typos and code style problems Andrew Morton
2021-05-07 1:05 ` [patch 74/91] drivers/char: remove /dev/kmem for good Andrew Morton
2021-05-07 1:06 ` [patch 75/91] mm: remove xlate_dev_kmem_ptr() Andrew Morton
2021-05-07 1:06 ` [patch 76/91] mm/vmalloc: remove vwrite() Andrew Morton
2021-05-07 1:06 ` [patch 77/91] arm: print alloc free paths for address in registers Andrew Morton
2021-05-07 1:06 ` [patch 78/91] scripts/spelling.txt: add "overlfow" Andrew Morton
2021-05-07 1:06 ` [patch 79/91] scripts/spelling.txt: add "diabled" typo Andrew Morton
2021-05-07 1:06 ` [patch 80/91] scripts/spelling.txt: add "overflw" Andrew Morton
2021-05-07 1:06 ` [patch 81/91] mm/slab.c: fix spelling mistake "disired" -> "desired" Andrew Morton
2021-05-07 1:06 ` [patch 82/91] include/linux/pgtable.h: few spelling fixes Andrew Morton
2021-05-07 1:06 ` [patch 83/91] kernel/umh.c: fix some spelling mistakes Andrew Morton
2021-05-07 1:06 ` [patch 84/91] kernel/user_namespace.c: fix typos Andrew Morton
2021-05-07 1:06 ` [patch 85/91] kernel/up.c: fix typo Andrew Morton
2021-05-07 1:06 ` [patch 86/91] kernel/sys.c: " Andrew Morton
2021-05-07 1:06 ` [patch 87/91] fs: fat: fix spelling typo of values Andrew Morton
2021-05-07 1:06 ` [patch 88/91] ipc/sem.c: spelling fix Andrew Morton
2021-05-07 1:06 ` [patch 89/91] treewide: remove editor modelines and cruft Andrew Morton
2021-05-07 1:06 ` [patch 90/91] mm: fix typos in comments Andrew Morton
2021-05-07 1:06 ` [patch 91/91] " Andrew Morton
2021-05-07 7:12 ` incoming Linus Torvalds
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