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lkl_linux/scripts/atomic/gen-atomic-raw.sh
Mark Rutland 1815da1718 locking/atomic: scripts: build raw_atomic_long*() directly
Now that arch_atomic*() usage is limited to the atomic headers, we no
longer have any users of arch_atomic_long_*(), and can generate
raw_atomic_long_*() directly.

Generate the raw_atomic_long_*() ops directly.

There should be no functional change as a result of this patch.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20230605070124.3741859-20-mark.rutland@arm.com
2023-06-05 09:57:20 +02:00

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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
ATOMICDIR=$(dirname $0)
. ${ATOMICDIR}/atomic-tbl.sh
#gen_proto_order_variant(meta, pfx, name, sfx, order, atomic, int, arg...)
gen_proto_order_variant()
{
local meta="$1"; shift
local pfx="$1"; shift
local name="$1"; shift
local sfx="$1"; shift
local order="$1"; shift
local atomic="$1"; shift
local int="$1"; shift
local atomicname="${atomic}_${pfx}${name}${sfx}${order}"
local ret="$(gen_ret_type "${meta}" "${int}")"
local params="$(gen_params "${int}" "${atomic}" "$@")"
local args="$(gen_args "$@")"
local retstmt="$(gen_ret_stmt "${meta}")"
cat <<EOF
static __always_inline ${ret}
raw_${atomicname}(${params})
{
${retstmt}arch_${atomicname}(${args});
}
EOF
}
gen_xchg()
{
local xchg="$1"; shift
local order="$1"; shift
cat <<EOF
#define raw_${xchg}${order}(...) \\
arch_${xchg}${order}(__VA_ARGS__)
EOF
}
cat << EOF
// SPDX-License-Identifier: GPL-2.0
// Generated by $0
// DO NOT MODIFY THIS FILE DIRECTLY
#ifndef _LINUX_ATOMIC_RAW_H
#define _LINUX_ATOMIC_RAW_H
EOF
grep '^[a-z]' "$1" | while read name meta args; do
gen_proto "${meta}" "${name}" "atomic" "int" ${args}
done
grep '^[a-z]' "$1" | while read name meta args; do
gen_proto "${meta}" "${name}" "atomic64" "s64" ${args}
done
for xchg in "xchg" "cmpxchg" "cmpxchg64" "cmpxchg128" "try_cmpxchg" "try_cmpxchg64" "try_cmpxchg128"; do
for order in "" "_acquire" "_release" "_relaxed"; do
gen_xchg "${xchg}" "${order}"
printf "\n"
done
done
for xchg in "cmpxchg_local" "cmpxchg64_local" "cmpxchg128_local" "sync_cmpxchg" "try_cmpxchg_local" "try_cmpxchg64_local" "try_cmpxchg128_local"; do
gen_xchg "${xchg}" ""
printf "\n"
done
cat <<EOF
#endif /* _LINUX_ATOMIC_RAW_H */
EOF