[PATCH RFT 15/16] perf tools: s390: Use generic syscall table scripts

[Charlie Jenkins]

Use the generic scripts to generate headers from the syscall table
instead of the custom ones for s390.

Signed-off-by: Charlie Jenkins <charlie at rivosinc.com>
---
 tools/perf/Makefile.config                         |  6 +---
 tools/perf/Makefile.perf                           |  2 +-
 tools/perf/arch/s390/Makefile                      | 21 --------------
 tools/perf/arch/s390/entry/syscalls/Kbuild         |  2 ++
 .../arch/s390/entry/syscalls/Makefile.syscalls     |  5 ++++
 tools/perf/arch/s390/entry/syscalls/mksyscalltbl   | 32 ----------------------
 tools/perf/arch/s390/include/syscall_table.h       |  2 ++
 tools/perf/util/syscalltbl.c                       |  6 +---
 8 files changed, 12 insertions(+), 64 deletions(-)

diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index 76dbd368aa9f..787be3201eec 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -31,12 +31,8 @@ $(call detected_var,SRCARCH)
 ifneq ($(NO_SYSCALL_TABLE),1)
   NO_SYSCALL_TABLE := 1
 
-  ifeq ($(SRCARCH),s390)
-    NO_SYSCALL_TABLE := 0
-  endif
-
   # architectures that use the generic syscall table scripts
-  ifeq ($(SRCARCH),$(filter $(SRCARCH),riscv arc csky arm sh sparc xtensa x86 alpha parisc arm64 loongarch mips powerpc))
+  ifeq ($(SRCARCH),$(filter $(SRCARCH),riscv arc csky arm sh sparc xtensa x86 alpha parisc arm64 loongarch mips powerpc s390))
     NO_SYSCALL_TABLE := 0
     CFLAGS += -DGENERIC_SYSCALL_TABLE
     CFLAGS += -I$(OUTPUT)arch/$(SRCARCH)/include/generated
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index c42cc4901005..410d850f7b9a 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -311,7 +311,7 @@ FEATURE_TESTS := all
 endif
 endif
 # architectures that use the generic syscall table
-ifeq ($(SRCARCH),$(filter $(SRCARCH),riscv arc csky arm sh sparc xtensa x86 alpha parisc arm64 loongarch mips powerpc))
+ifeq ($(SRCARCH),$(filter $(SRCARCH),riscv arc csky arm sh sparc xtensa x86 alpha parisc arm64 loongarch mips powerpc s390))
 include $(srctree)/tools/perf/scripts/Makefile.syscalls
 endif
 include Makefile.config
diff --git a/tools/perf/arch/s390/Makefile b/tools/perf/arch/s390/Makefile
index 56994e63b43a..51dd7d7827e5 100644
--- a/tools/perf/arch/s390/Makefile
+++ b/tools/perf/arch/s390/Makefile
@@ -5,24 +5,3 @@ endif
 HAVE_KVM_STAT_SUPPORT := 1
 PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET := 1
 PERF_HAVE_JITDUMP := 1
-
-#
-# Syscall table generation for perf
-#
-
-out    := $(OUTPUT)arch/s390/include/generated/asm
-header := $(out)/syscalls_64.c
-sysprf := $(srctree)/tools/perf/arch/s390/entry/syscalls
-sysdef := $(sysprf)/syscall.tbl
-systbl := $(sysprf)/mksyscalltbl
-
-# Create output directory if not already present
-$(shell [ -d '$(out)' ] || mkdir -p '$(out)')
-
-$(header): $(sysdef) $(systbl)
-	$(Q)$(SHELL) '$(systbl)' $(sysdef) > $@
-
-clean::
-	$(call QUIET_CLEAN, s390) $(RM) $(header)
-
-archheaders: $(header)
diff --git a/tools/perf/arch/s390/entry/syscalls/Kbuild b/tools/perf/arch/s390/entry/syscalls/Kbuild
new file mode 100644
index 000000000000..9a41e3572c3a
--- /dev/null
+++ b/tools/perf/arch/s390/entry/syscalls/Kbuild
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0
+syscall-y += syscalls_64.h
diff --git a/tools/perf/arch/s390/entry/syscalls/Makefile.syscalls b/tools/perf/arch/s390/entry/syscalls/Makefile.syscalls
new file mode 100644
index 000000000000..9762d7abf17c
--- /dev/null
+++ b/tools/perf/arch/s390/entry/syscalls/Makefile.syscalls
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0
+
+syscall_abis_64 += renameat rlimit memfd_secret
+
+syscalltbl = $(srctree)/tools/perf/arch/s390/entry/syscalls/syscall.tbl
diff --git a/tools/perf/arch/s390/entry/syscalls/mksyscalltbl b/tools/perf/arch/s390/entry/syscalls/mksyscalltbl
deleted file mode 100755
index 52eb88a77c94..000000000000
--- a/tools/perf/arch/s390/entry/syscalls/mksyscalltbl
+++ /dev/null
@@ -1,32 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-#
-# Generate system call table for perf
-#
-# Copyright IBM Corp. 2017, 2018
-# Author(s):  Hendrik Brueckner <brueckner at linux.vnet.ibm.com>
-#
-
-SYSCALL_TBL=$1
-
-if ! test -r $SYSCALL_TBL; then
-	echo "Could not read input file" >&2
-	exit 1
-fi
-
-create_table()
-{
-	local max_nr nr abi sc discard
-
-	echo 'static const char *const syscalltbl_s390_64[] = {'
-	while read nr abi sc discard; do
-		printf '\t[%d] = "%s",\n' $nr $sc
-		max_nr=$nr
-	done
-	echo '};'
-	echo "#define SYSCALLTBL_S390_64_MAX_ID $max_nr"
-}
-
-grep -E "^[[:digit:]]+[[:space:]]+(common|64)" $SYSCALL_TBL	\
-	|sort -k1 -n					\
-	|create_table
diff --git a/tools/perf/arch/s390/include/syscall_table.h b/tools/perf/arch/s390/include/syscall_table.h
new file mode 100644
index 000000000000..b53e31c15805
--- /dev/null
+++ b/tools/perf/arch/s390/include/syscall_table.h
@@ -0,0 +1,2 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#include <asm/syscalls_64.h>
diff --git a/tools/perf/util/syscalltbl.c b/tools/perf/util/syscalltbl.c
index 4320876242ae..9341f0d442fe 100644
--- a/tools/perf/util/syscalltbl.c
+++ b/tools/perf/util/syscalltbl.c
@@ -13,11 +13,7 @@
 #include <string.h>
 #include "string2.h"
 
-#if defined(__s390x__)
-#include <asm/syscalls_64.c>
-const int syscalltbl_native_max_id = SYSCALLTBL_S390_64_MAX_ID;
-static const char *const *syscalltbl_native = syscalltbl_s390_64;
-#elif defined(GENERIC_SYSCALL_TABLE)
+#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;

-- 
2.34.1