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Message-Id: <20241216-perf_syscalltbl-v3-8-239f032481d5@rivosinc.com>
Date: Mon, 16 Dec 2024 22:32:53 -0800
From: Charlie Jenkins <charlie@...osinc.com>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Namhyung Kim <namhyung@...nel.org>, Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Jiri Olsa <jolsa@...nel.org>, Ian Rogers <irogers@...gle.com>,
Adrian Hunter <adrian.hunter@...el.com>,
Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>,
Mickaël Salaün <mic@...ikod.net>,
Günther Noack <gnoack@...gle.com>,
Christian Brauner <brauner@...nel.org>, Guo Ren <guoren@...nel.org>,
John Garry <john.g.garry@...cle.com>, Will Deacon <will@...nel.org>,
James Clark <james.clark@...aro.org>, Mike Leach <mike.leach@...aro.org>,
Leo Yan <leo.yan@...ux.dev>, Jonathan Corbet <corbet@....net>,
Björn Töpel <bjorn@...osinc.com>,
Arnd Bergmann <arnd@...db.de>
Cc: linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
linux-riscv@...ts.infradead.org, linux-security-module@...r.kernel.org,
bpf@...r.kernel.org, linux-csky@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-doc@...r.kernel.org,
Charlie Jenkins <charlie@...osinc.com>
Subject: [PATCH v3 08/16] perf tools: x86: Use generic syscall scripts
Use the generic scripts to generate headers from the syscall table for
both 32- and 64-bit x86.
Signed-off-by: Charlie Jenkins <charlie@...osinc.com>
---
tools/perf/Makefile.config | 3 +-
tools/perf/Makefile.perf | 2 +-
tools/perf/arch/x86/Build | 1 -
tools/perf/arch/x86/Makefile | 25 -------------
tools/perf/arch/x86/entry/syscalls/Kbuild | 3 ++
.../perf/arch/x86/entry/syscalls/Makefile.syscalls | 6 ++++
tools/perf/arch/x86/entry/syscalls/syscalltbl.sh | 42 ----------------------
tools/perf/arch/x86/include/syscall_table.h | 8 +++++
tools/perf/util/syscalltbl.c | 10 +-----
9 files changed, 20 insertions(+), 80 deletions(-)
diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index d3c12c6ba6764e9a8b12acee603a0509154f2c74..218c407c953f8526ea995cc5126a94654ebbae11 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -31,7 +31,7 @@ $(call detected_var,SRCARCH)
ifneq ($(NO_SYSCALL_TABLE),1)
NO_SYSCALL_TABLE := 1
- ifeq ($(SRCARCH),$(filter $(SRCARCH),x86 powerpc arm64 s390 mips loongarch riscv))
+ ifeq ($(SRCARCH),$(filter $(SRCARCH),powerpc arm64 s390 mips loongarch))
NO_SYSCALL_TABLE := 0
endif
@@ -56,7 +56,6 @@ endif
# Additional ARCH settings for x86
ifeq ($(SRCARCH),x86)
$(call detected,CONFIG_X86)
- CFLAGS += -I$(OUTPUT)arch/x86/include/generated
ifeq (${IS_64_BIT}, 1)
CFLAGS += -DHAVE_ARCH_X86_64_SUPPORT
ARCH_INCLUDE = ../../arch/x86/lib/memcpy_64.S ../../arch/x86/lib/memset_64.S
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 47fe3c41fa13a388803ba804a7c3a4aac81d20ae..698967f50ceb5cfc29dc5c2947c995980120e64e 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -311,7 +311,7 @@ FEATURE_TESTS := all
endif
endif
# architectures that use the generic syscall table
-generic_syscall_table_archs := riscv arc csky arm sh sparc xtensa
+generic_syscall_table_archs := riscv arc csky arm sh sparc xtensa x86
ifneq ($(filter $(SRCARCH), $(generic_syscall_table_archs)),)
include $(srctree)/tools/perf/scripts/Makefile.syscalls
endif
diff --git a/tools/perf/arch/x86/Build b/tools/perf/arch/x86/Build
index 87d0574913431b7c4505caf78f41d48b180a2fbc..02a1ca780a2071d322f75fb2885c3a36bc278e8d 100644
--- a/tools/perf/arch/x86/Build
+++ b/tools/perf/arch/x86/Build
@@ -2,7 +2,6 @@ perf-util-y += util/
perf-test-y += tests/
ifdef SHELLCHECK
- SHELL_TESTS := entry/syscalls/syscalltbl.sh
TEST_LOGS := $(SHELL_TESTS:%=%.shellcheck_log)
else
SHELL_TESTS :=
diff --git a/tools/perf/arch/x86/Makefile b/tools/perf/arch/x86/Makefile
index a6b6e0a9308a8e401c65eb802e5815a41fbdefe9..a295a80ea078199547e816d18531820bfdba7961 100644
--- a/tools/perf/arch/x86/Makefile
+++ b/tools/perf/arch/x86/Makefile
@@ -1,28 +1,3 @@
# SPDX-License-Identifier: GPL-2.0
HAVE_KVM_STAT_SUPPORT := 1
PERF_HAVE_JITDUMP := 1
-
-###
-# Syscall table generation
-#
-
-generated := $(OUTPUT)arch/x86/include/generated
-out := $(generated)/asm
-header := $(out)/syscalls_64.c
-header_32 := $(out)/syscalls_32.c
-sys := $(srctree)/tools/perf/arch/x86/entry/syscalls
-systbl := $(sys)/syscalltbl.sh
-
-# Create output directory if not already present
-$(shell [ -d '$(out)' ] || mkdir -p '$(out)')
-
-$(header): $(sys)/syscall_64.tbl $(systbl)
- $(Q)$(SHELL) '$(systbl)' $(sys)/syscall_64.tbl 'x86_64' > $@
-
-$(header_32): $(sys)/syscall_32.tbl $(systbl)
- $(Q)$(SHELL) '$(systbl)' $(sys)/syscall_32.tbl 'x86' > $@
-
-clean::
- $(call QUIET_CLEAN, x86) $(RM) -r $(header) $(generated)
-
-archheaders: $(header) $(header_32)
diff --git a/tools/perf/arch/x86/entry/syscalls/Kbuild b/tools/perf/arch/x86/entry/syscalls/Kbuild
new file mode 100644
index 0000000000000000000000000000000000000000..84c6599b4ea6a160217a3496449b205f2263f0fb
--- /dev/null
+++ b/tools/perf/arch/x86/entry/syscalls/Kbuild
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0
+syscall-y += syscalls_32.h
+syscall-y += syscalls_64.h
diff --git a/tools/perf/arch/x86/entry/syscalls/Makefile.syscalls b/tools/perf/arch/x86/entry/syscalls/Makefile.syscalls
new file mode 100644
index 0000000000000000000000000000000000000000..db3d5d6d4e5699d338afc55f6415612ef924d985
--- /dev/null
+++ b/tools/perf/arch/x86/entry/syscalls/Makefile.syscalls
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0
+
+syscall_abis_32 += i386
+syscall_abis_64 +=
+
+syscalltbl = $(srctree)/tools/perf/arch/x86/entry/syscalls/syscall_%.tbl
diff --git a/tools/perf/arch/x86/entry/syscalls/syscalltbl.sh b/tools/perf/arch/x86/entry/syscalls/syscalltbl.sh
deleted file mode 100755
index 2b71f99933a549607b0c18aa2b8be16b860f603c..0000000000000000000000000000000000000000
--- a/tools/perf/arch/x86/entry/syscalls/syscalltbl.sh
+++ /dev/null
@@ -1,42 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-
-in="$1"
-arch="$2"
-
-syscall_macro() {
- nr="$1"
- name="$2"
-
- echo " [$nr] = \"$name\","
-}
-
-emit() {
- nr="$1"
- entry="$2"
-
- syscall_macro "$nr" "$entry"
-}
-
-echo "static const char *const syscalltbl_${arch}[] = {"
-
-sorted_table=$(mktemp /tmp/syscalltbl.XXXXXX)
-grep '^[0-9]' "$in" | 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
- if [ $nr -ge 512 ] ; then # discard compat sycalls
- break
- fi
-
- emit "$nr" "$name"
- max_nr=$nr
-done < $sorted_table
-
-rm -f $sorted_table
-
-echo "};"
-
-echo "#define SYSCALLTBL_${arch}_MAX_ID ${max_nr}"
diff --git a/tools/perf/arch/x86/include/syscall_table.h b/tools/perf/arch/x86/include/syscall_table.h
new file mode 100644
index 0000000000000000000000000000000000000000..7ff51b783000d727ec48be960730b81ecdb05575
--- /dev/null
+++ b/tools/perf/arch/x86/include/syscall_table.h
@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#include <asm/bitsperlong.h>
+
+#if __BITS_PER_LONG == 64
+#include <asm/syscalls_64.h>
+#else
+#include <asm/syscalls_32.h>
+#endif
diff --git a/tools/perf/util/syscalltbl.c b/tools/perf/util/syscalltbl.c
index ccf234a54366f9921c3b9a02ffb0a365d17244bc..02f23483bfff83809c4e649a2d054dba6975d12c 100644
--- a/tools/perf/util/syscalltbl.c
+++ b/tools/perf/util/syscalltbl.c
@@ -14,15 +14,7 @@
#include <string.h>
#include "string2.h"
-#if defined(__x86_64__)
-#include <asm/syscalls_64.c>
-const int syscalltbl_native_max_id = SYSCALLTBL_x86_64_MAX_ID;
-static const char *const *syscalltbl_native = syscalltbl_x86_64;
-#elif defined(__i386__)
-#include <asm/syscalls_32.c>
-const int syscalltbl_native_max_id = SYSCALLTBL_x86_MAX_ID;
-static const char *const *syscalltbl_native = syscalltbl_x86;
-#elif defined(__s390x__)
+#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;
--
2.34.1
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