mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-29 15:14:18 +08:00
67d1b0de25
Now that all architectures provide arch_{atomic,atomic64}_*(), we can
build arch_atomic_long_*() atop these, which can be safely used in
noinstr code. The regular atomic_long_*() wrappers are built atop these,
as we do for {atomic,atomic64}_*() atop arch_{atomic,atomic64}_*().
We don't provide arch_* versions of the cond_read*() variants, as we
don't have arch_* versions of the underlying atomic/atomic64 functions
(nor the smp_cond_load*() helpers these are typically based on).
Note that the headers in this patch under include/linux/atomic/ are
generated by the scripts in scripts/atomic/.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210713105253.7615-5-mark.rutland@arm.com
103 lines
2.2 KiB
Bash
Executable File
103 lines
2.2 KiB
Bash
Executable File
#!/bin/sh
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
|
|
ATOMICDIR=$(dirname $0)
|
|
|
|
. ${ATOMICDIR}/atomic-tbl.sh
|
|
|
|
#gen_cast(arg, int, atomic)
|
|
gen_cast()
|
|
{
|
|
local arg="$1"; shift
|
|
local int="$1"; shift
|
|
local atomic="$1"; shift
|
|
|
|
[ "${arg%%:*}" = "p" ] || return
|
|
|
|
printf "($(gen_param_type "${arg}" "${int}" "${atomic}"))"
|
|
}
|
|
|
|
#gen_args_cast(int, atomic, arg...)
|
|
gen_args_cast()
|
|
{
|
|
local int="$1"; shift
|
|
local atomic="$1"; shift
|
|
|
|
while [ "$#" -gt 0 ]; do
|
|
local cast="$(gen_cast "$1" "${int}" "${atomic}")"
|
|
local arg="$(gen_param_name "$1")"
|
|
printf "${cast}${arg}"
|
|
[ "$#" -gt 1 ] && printf ", "
|
|
shift;
|
|
done
|
|
}
|
|
|
|
#gen_proto_order_variant(meta, pfx, name, sfx, order, atomic, int, arg...)
|
|
gen_proto_order_variant()
|
|
{
|
|
local meta="$1"; shift
|
|
local name="$1$2$3$4"; shift; shift; shift; shift
|
|
local atomic="$1"; shift
|
|
local int="$1"; shift
|
|
|
|
local ret="$(gen_ret_type "${meta}" "long")"
|
|
local params="$(gen_params "long" "atomic_long" "$@")"
|
|
local argscast="$(gen_args_cast "${int}" "${atomic}" "$@")"
|
|
local retstmt="$(gen_ret_stmt "${meta}")"
|
|
|
|
cat <<EOF
|
|
static __always_inline ${ret}
|
|
arch_atomic_long_${name}(${params})
|
|
{
|
|
${retstmt}arch_${atomic}_${name}(${argscast});
|
|
}
|
|
|
|
EOF
|
|
}
|
|
|
|
cat << EOF
|
|
// SPDX-License-Identifier: GPL-2.0
|
|
|
|
// Generated by $0
|
|
// DO NOT MODIFY THIS FILE DIRECTLY
|
|
|
|
#ifndef _LINUX_ATOMIC_LONG_H
|
|
#define _LINUX_ATOMIC_LONG_H
|
|
|
|
#include <linux/compiler.h>
|
|
#include <asm/types.h>
|
|
|
|
#ifdef CONFIG_64BIT
|
|
typedef atomic64_t atomic_long_t;
|
|
#define ATOMIC_LONG_INIT(i) ATOMIC64_INIT(i)
|
|
#define atomic_long_cond_read_acquire atomic64_cond_read_acquire
|
|
#define atomic_long_cond_read_relaxed atomic64_cond_read_relaxed
|
|
#else
|
|
typedef atomic_t atomic_long_t;
|
|
#define ATOMIC_LONG_INIT(i) ATOMIC_INIT(i)
|
|
#define atomic_long_cond_read_acquire atomic_cond_read_acquire
|
|
#define atomic_long_cond_read_relaxed atomic_cond_read_relaxed
|
|
#endif
|
|
|
|
#ifdef CONFIG_64BIT
|
|
|
|
EOF
|
|
|
|
grep '^[a-z]' "$1" | while read name meta args; do
|
|
gen_proto "${meta}" "${name}" "atomic64" "s64" ${args}
|
|
done
|
|
|
|
cat <<EOF
|
|
#else /* CONFIG_64BIT */
|
|
|
|
EOF
|
|
|
|
grep '^[a-z]' "$1" | while read name meta args; do
|
|
gen_proto "${meta}" "${name}" "atomic" "int" ${args}
|
|
done
|
|
|
|
cat <<EOF
|
|
#endif /* CONFIG_64BIT */
|
|
#endif /* _LINUX_ATOMIC_LONG_H */
|
|
EOF
|