mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-09-04 20:19:47 +08:00
4a73aff8c5
Currently each architecture in perf independently generates syscall headers. Adapt the work that has gone into unifying syscall header implementations in the kernel to work with perf tools. Introduce this framework with riscv at first. riscv previously relied on libaudit, but with this change, perf tools for riscv no longer needs this external dependency. Signed-off-by: Charlie Jenkins <charlie@rivosinc.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Christian Brauner <brauner@kernel.org> Cc: Guo Ren <guoren@kernel.org> Cc: Günther Noack <gnoack@google.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@linaro.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Leo Yan <leo.yan@linux.dev> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mickaël Salaün <mic@digikod.net> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20250108-perf_syscalltbl-v6-1-7543b5293098@rivosinc.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
87 lines
1.5 KiB
Bash
Executable File
87 lines
1.5 KiB
Bash
Executable File
#!/bin/sh
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
#
|
|
# Generate a syscall table header.
|
|
#
|
|
# Each line of the syscall table should have the following format:
|
|
#
|
|
# NR ABI NAME [NATIVE] [COMPAT]
|
|
#
|
|
# NR syscall number
|
|
# ABI ABI name
|
|
# NAME syscall name
|
|
# NATIVE native entry point (optional)
|
|
# COMPAT compat entry point (optional)
|
|
|
|
set -e
|
|
|
|
usage() {
|
|
echo >&2 "usage: $0 [--abis ABIS] INFILE OUTFILE" >&2
|
|
echo >&2
|
|
echo >&2 " INFILE input syscall table"
|
|
echo >&2 " OUTFILE output header file"
|
|
echo >&2
|
|
echo >&2 "options:"
|
|
echo >&2 " --abis ABIS ABI(s) to handle (By default, all lines are handled)"
|
|
exit 1
|
|
}
|
|
|
|
# default unless specified by options
|
|
abis=
|
|
|
|
while [ $# -gt 0 ]
|
|
do
|
|
case $1 in
|
|
--abis)
|
|
abis=$(echo "($2)" | tr ',' '|')
|
|
shift 2;;
|
|
-*)
|
|
echo "$1: unknown option" >&2
|
|
usage;;
|
|
*)
|
|
break;;
|
|
esac
|
|
done
|
|
|
|
if [ $# -ne 2 ]; then
|
|
usage
|
|
fi
|
|
|
|
infile="$1"
|
|
outfile="$2"
|
|
|
|
nxt=0
|
|
|
|
syscall_macro() {
|
|
nr="$1"
|
|
name="$2"
|
|
|
|
echo " [$nr] = \"$name\","
|
|
}
|
|
|
|
emit() {
|
|
nr="$1"
|
|
entry="$2"
|
|
|
|
syscall_macro "$nr" "$entry"
|
|
}
|
|
|
|
echo "static const char *const syscalltbl[] = {" > $outfile
|
|
|
|
sorted_table=$(mktemp /tmp/syscalltbl.XXXXXX)
|
|
grep -E "^[0-9]+[[:space:]]+$abis" "$infile" | sort -n > $sorted_table
|
|
|
|
max_nr=0
|
|
# the params are: nr abi name entry compat
|
|
# use _ for intentionally unused variables according to SC2034
|
|
while read nr _ name _ _; do
|
|
emit "$nr" "$name" >> $outfile
|
|
max_nr=$nr
|
|
done < $sorted_table
|
|
|
|
rm -f $sorted_table
|
|
|
|
echo "};" >> $outfile
|
|
|
|
echo "#define SYSCALLTBL_MAX_ID ${max_nr}" >> $outfile
|