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OpenCloudOS-Kernel/tools/include/linux
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Rikard Falkeborn f747e6667e linux/bits.h: fix compilation error with GENMASK 
GENMASK() has an input check which uses __builtin_choose_expr() to
enable a compile time sanity check of its inputs if they are known at
compile time.

However, it turns out that __builtin_constant_p() does not always return
a compile time constant [0].  It was thought this problem was fixed with
gcc 4.9 [1], but apparently this is not the case [2].

Switch to use __is_constexpr() instead which always returns a compile time
constant, regardless of its inputs.

Link: https://lore.kernel.org/lkml/42b4342b-aefc-a16a-0d43-9f9c0d63ba7a@rasmusvillemoes.dk [0]
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=19449 [1]
Link: https://lore.kernel.org/lkml/1ac7bbc2-45d9-26ed-0b33-bf382b8d858b@I-love.SAKURA.ne.jp [2]
Link: https://lkml.kernel.org/r/20210511203716.117010-1-rikard.falkeborn@gmail.com
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Yury Norov <yury.norov@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2021-05-22 15:09:07 -10:00
..
sched tools/lib/lockdep: Remove private kernel headers 2017-06-05 09:28:14 +02:00
unaligned License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
atomic.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
bitmap.h tools: sync small_const_nbits() macro with the kernel 2021-05-06 19:24:12 -07:00
bitops.h bitops: more BITS_TO_* macros 2020-02-04 03:05:26 +00:00
bits.h linux/bits.h: fix compilation error with GENMASK 2021-05-22 15:09:07 -10:00
btf_ids.h btf: Add BTF_ID_LIST_SINGLE macro 2020-09-21 15:00:40 -07:00
bug.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
build_bug.h tools headers: Syncronize linux/build_bug.h with the kernel sources 2021-01-15 16:31:46 -03:00
compiler-gcc.h perf tools: Remove broken __no_tail_call attribute 2020-11-03 08:32:15 -03:00
compiler.h tools headers: Get tools's linux/compiler.h closer to the kernel's 2020-12-18 17:32:26 -03:00
compiler_types.h tools headers: Add conditional __has_builtin() 2020-12-18 17:32:28 -03:00
const.h linux/bits.h: fix compilation error with GENMASK 2021-05-22 15:09:07 -10:00
coresight-pmu.h tools headers UAPI: Update tools' copy of linux/coresight-pmu.h 2021-03-06 16:54:30 -03:00
ctype.h tools headers: Update linux/ctype.h with the kernel sources 2020-12-18 17:32:28 -03:00
debug_locks.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
delay.h tools/lib/lockdep: Remove private kernel headers 2017-06-05 09:28:14 +02:00
err.h docs: fix broken documentation links 2019-06-08 13:42:13 -06:00
export.h module: remove EXPORT_UNUSED_SYMBOL* 2021-02-08 12:28:07 +01:00
filter.h bpf: Add bitwise atomic instructions 2021-01-14 18:34:29 -08:00
ftrace.h tools/lib/lockdep: Remove private kernel headers 2017-06-05 09:28:14 +02:00
gfp.h tools/lib/lockdep: Remove private kernel headers 2017-06-05 09:28:14 +02:00
hardirq.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hash.h tools/headers: Synchronize kernel ABI headers 2017-11-04 09:27:46 +01:00
hashtable.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
interrupt.h tools/lib/lockdep: Remove private kernel headers 2017-06-05 09:28:14 +02:00
irqflags.h lockdep: Remove lockdep_hardirq{s_enabled,_context}() argument 2020-07-10 12:00:02 +02:00
jhash.h tools/: replace HTTP links with HTTPS ones 2020-08-07 11:33:21 -07:00
kallsyms.h kallsyms/printk: add loglvl to print_ip_sym() 2020-06-09 09:39:10 -07:00
kconfig.h x86/insn: Add an insn_decode() API 2021-03-15 11:05:47 +01:00
kern_levels.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
kernel.h tools headers: Synchronize linux/bits.h with the kernel sources 2020-04-14 11:40:05 -03:00
linkage.h tools/lib/lockdep: Remove private kernel headers 2017-06-05 09:28:14 +02:00
list.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
lockdep.h tools/lib/lockdep: Add dummy task_struct state member 2018-09-10 13:48:24 +02:00
log2.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
math64.h tools include: Add an initial math64.h 2021-04-15 16:38:02 -03:00
module.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mutex.h tools/lib/lockdep: Remove private kernel headers 2017-06-05 09:28:14 +02:00
nmi.h tools/lib/lockdep: Add empty nmi.h 2018-09-10 13:48:23 +02:00
numa.h tools/: replace open encodings for NUMA_NO_NODE 2019-03-05 21:07:14 -08:00
objtool.h objtool: Combine UNWIND_HINT_RET_OFFSET and UNWIND_HINT_FUNC 2021-01-26 11:12:00 -06:00
overflow.h tools: bpf: make use of reallocarray 2018-07-11 22:13:34 +02:00
poison.h mm, page_poison: remove CONFIG_PAGE_POISONING_ZERO 2020-12-15 12:13:46 -08:00
proc_fs.h tools/lib/lockdep: Remove private kernel headers 2017-06-05 09:28:14 +02:00
rbtree.h rbtree: Add generic add and find helpers 2021-02-17 14:07:31 +01:00
rbtree_augmented.h docs: Add rbtree documentation to the core-api 2020-04-21 10:29:19 -06:00
rcu.h rcu: Don't return a value from rcu_assign_pointer() 2019-06-13 15:38:34 -07:00
refcount.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ring_buffer.h tools headers: Add missing perf_event.h include 2019-08-22 11:12:36 -03:00
seq_file.h tools/lib/lockdep: Remove private kernel headers 2017-06-05 09:28:14 +02:00
sizes.h tools: bpftool: add "prog run" subcommand to test-run programs 2019-07-05 23:48:07 +02:00
spinlock.h xarray: Add XArray unconditional store operations 2018-10-21 10:45:57 -04:00
stacktrace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
static_call_types.h static_call: Move struct static_call_key definition to static_call_types.h 2021-03-11 16:04:39 +01:00
string.h tools lib: Adopt memchr_inv() from kernel 2020-11-27 08:34:52 -03:00
stringify.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
time64.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
types.h tools include: Add __sum16 and __wsum definitions. 2021-03-08 10:42:03 -03:00
zalloc.h tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00