perf tools: Remove dependency on libaudit

All architectures now support HAVE_SYSCALL_TABLE_SUPPORT, so the flag is
no longer needed. With the removal of the flag, the related
GENERIC_SYSCALL_TABLE can also be removed.

libaudit was only used as a fallback for when HAVE_SYSCALL_TABLE_SUPPORT
was not defined, so libaudit is also no longer needed for any
architecture.

Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.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-v6-16-7543b5293098@rivosinc.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

4 files changed, 5 insertions, 58 deletions

diff --git a/tools/perf/util/env.c b/tools/perf/util/env.c
index 610c57da5b37..cae4f6d63318 100644
--- a/tools/perf/util/env.c
+++ b/tools/perf/util/env.c
@@ -480,19 +480,19 @@ const char *perf_env__arch(struct perf_env *env)
 	return normalize_arch(arch_name);
 }
 
-#if defined(HAVE_SYSCALL_TABLE_SUPPORT) && defined(HAVE_LIBTRACEEVENT)
+#if defined(HAVE_LIBTRACEEVENT)
 #include "trace/beauty/arch_errno_names.c"
 #endif
 
 const char *perf_env__arch_strerrno(struct perf_env *env __maybe_unused, int err __maybe_unused)
 {
-#if defined(HAVE_SYSCALL_TABLE_SUPPORT) && defined(HAVE_LIBTRACEEVENT)
+#if defined(HAVE_LIBTRACEEVENT)
 	if (env->arch_strerrno == NULL)
 		env->arch_strerrno = arch_syscalls__strerrno_function(perf_env__arch(env));
 
 	return env->arch_strerrno ? env->arch_strerrno(err) : "no arch specific strerrno function";
 #else
-	return "!(HAVE_SYSCALL_TABLE_SUPPORT && HAVE_LIBTRACEEVENT)";
+	return "!HAVE_LIBTRACEEVENT";
 #endif
 }
 
diff --git a/tools/perf/util/generate-cmdlist.sh b/tools/perf/util/generate-cmdlist.sh
index 1b5140e5ce99..6a73c903d690 100755
--- a/tools/perf/util/generate-cmdlist.sh
+++ b/tools/perf/util/generate-cmdlist.sh
@@ -38,7 +38,7 @@ do
 done
 echo "#endif /* HAVE_LIBELF_SUPPORT */"
 
-echo "#if defined(HAVE_LIBTRACEEVENT) && (defined(HAVE_LIBAUDIT_SUPPORT) || defined(HAVE_SYSCALL_TABLE_SUPPORT))"
+echo "#if defined(HAVE_LIBTRACEEVENT)"
 sed -n -e 's/^perf-\([^ 	]*\)[ 	].* audit*/\1/p' command-list.txt |
 sort |
 while read cmd
@@ -51,7 +51,7 @@ do
 	    p
      }' "Documentation/perf-$cmd.txt"
 done
-echo "#endif /* HAVE_LIBTRACEEVENT && (HAVE_LIBAUDIT_SUPPORT || HAVE_SYSCALL_TABLE_SUPPORT) */"
+echo "#endif /* HAVE_LIBTRACEEVENT */"
 
 echo "#ifdef HAVE_LIBTRACEEVENT"
 sed -n -e 's/^perf-\([^ 	]*\)[ 	].* traceevent.*/\1/p' command-list.txt |
diff --git a/tools/perf/util/syscalltbl.c b/tools/perf/util/syscalltbl.c
index 210f61b0a7a2..928aca4cd6e9 100644
--- a/tools/perf/util/syscalltbl.c
+++ b/tools/perf/util/syscalltbl.c
@@ -10,20 +10,12 @@
 #include <linux/compiler.h>
 #include <linux/zalloc.h>
 
-#ifdef HAVE_SYSCALL_TABLE_SUPPORT
 #include <string.h>
 #include "string2.h"
 
-#if defined(GENERIC_SYSCALL_TABLE)
 #include <syscall_table.h>
 const int syscalltbl_native_max_id = SYSCALLTBL_MAX_ID;
 static const char *const *syscalltbl_native = syscalltbl;
-#else
-const int syscalltbl_native_max_id = 0;
-static const char *const syscalltbl_native[] = {
-	[0] = "unknown",
-};
-#endif
 
 struct syscall {
 	int id;
@@ -131,47 +123,3 @@ int syscalltbl__strglobmatch_first(struct syscalltbl *tbl, const char *syscall_g
 	*idx = -1;
 	return syscalltbl__strglobmatch_next(tbl, syscall_glob, idx);
 }
-
-#else /* HAVE_SYSCALL_TABLE_SUPPORT */
-
-#include <libaudit.h>
-
-struct syscalltbl *syscalltbl__new(void)
-{
-	struct syscalltbl *tbl = zalloc(sizeof(*tbl));
-	if (tbl)
-		tbl->audit_machine = audit_detect_machine();
-	return tbl;
-}
-
-void syscalltbl__delete(struct syscalltbl *tbl)
-{
-	free(tbl);
-}
-
-const char *syscalltbl__name(const struct syscalltbl *tbl, int id)
-{
-	return audit_syscall_to_name(id, tbl->audit_machine);
-}
-
-int syscalltbl__id(struct syscalltbl *tbl, const char *name)
-{
-	return audit_name_to_syscall(name, tbl->audit_machine);
-}
-
-int syscalltbl__id_at_idx(struct syscalltbl *tbl __maybe_unused, int idx)
-{
-	return idx;
-}
-
-int syscalltbl__strglobmatch_next(struct syscalltbl *tbl __maybe_unused,
-				  const char *syscall_glob __maybe_unused, int *idx __maybe_unused)
-{
-	return -1;
-}
-
-int syscalltbl__strglobmatch_first(struct syscalltbl *tbl, const char *syscall_glob, int *idx)
-{
-	return syscalltbl__strglobmatch_next(tbl, syscall_glob, idx);
-}
-#endif /* HAVE_SYSCALL_TABLE_SUPPORT */
diff --git a/tools/perf/util/syscalltbl.h b/tools/perf/util/syscalltbl.h
index 2b53b7ed25a6..362411a6d849 100644
--- a/tools/perf/util/syscalltbl.h
+++ b/tools/perf/util/syscalltbl.h
@@ -3,7 +3,6 @@
 #define __PERF_SYSCALLTBL_H
 
 struct syscalltbl {
-	int audit_machine;
 	struct {
 		int max_id;
 		int nr_entries;