perf tools arm64: Use syscall table

arm64 uses a syscall table, use that in perf instead of using unistd.h.

Signed-off-by: Charlie Jenkins <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Christian Brauner <[email protected]>
Cc: Guo Ren <[email protected]>
Cc: Günther Noack <[email protected]>
Cc: Ian Rogers <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: James Clark <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: John Garry <[email protected]>
Cc: Jonathan Corbet <[email protected]>
Cc: Leo Yan <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Mickaël Salaün <[email protected]>
Cc: Mike Leach <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Palmer Dabbelt <[email protected]>
Cc: Paul Walmsley <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Will Deacon <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

Author: charlie-rivos

tools/perf/Makefile.config

@@ -31,7 +31,7 @@ $(call detected_var,SRCARCH)
 ifneq ($(NO_SYSCALL_TABLE),1)
   NO_SYSCALL_TABLE := 1
 
-  ifeq ($(SRCARCH),$(filter $(SRCARCH),powerpc arm64 s390 mips loongarch))
+  ifeq ($(SRCARCH),$(filter $(SRCARCH),powerpc s390 mips loongarch))
     NO_SYSCALL_TABLE := 0
   endif
 
@@ -79,7 +79,6 @@ ifeq ($(SRCARCH),arm)
 endif
 
 ifeq ($(SRCARCH),arm64)
-  CFLAGS += -I$(OUTPUT)arch/arm64/include/generated
   ifndef NO_LIBUNWIND
     LIBUNWIND_LIBS = -lunwind -lunwind-aarch64
   endif

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 x86 alpha parisc
+generic_syscall_table_archs := riscv arc csky arm sh sparc xtensa x86 alpha parisc arm64
 ifneq ($(filter $(SRCARCH), $(generic_syscall_table_archs)),)
 include $(srctree)/tools/perf/scripts/Makefile.syscalls
 endif

tools/perf/arch/arm64/Makefile

@@ -1,25 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0
 PERF_HAVE_JITDUMP := 1
 HAVE_KVM_STAT_SUPPORT := 1
-
-#
-# Syscall table generation for perf
-#
-
-out    := $(OUTPUT)arch/arm64/include/generated/asm
-header := $(out)/syscalls.c
-incpath := $(srctree)/tools
-sysdef := $(srctree)/tools/arch/arm64/include/uapi/asm/unistd.h
-sysprf := $(srctree)/tools/perf/arch/arm64/entry/syscalls/
-systbl := $(sysprf)/mksyscalltbl
-
-# Create output directory if not already present
-$(shell [ -d '$(out)' ] || mkdir -p '$(out)')
-
-$(header): $(sysdef) $(systbl)
-	$(Q)$(SHELL) '$(systbl)' '$(CC)' '$(HOSTCC)' $(incpath) $(sysdef) > $@
-
-clean::
-	$(call QUIET_CLEAN, arm64) $(RM) $(header)
-
-archheaders: $(header)

tools/perf/arch/arm64/entry/syscalls/Kbuild

@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0
+syscall-y += syscalls_32.h
+syscall-y += syscalls_64.h

tools/perf/arch/arm64/entry/syscalls/Makefile.syscalls

@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0
+
+syscall_abis_32 +=
+syscall_abis_64 += renameat rlimit memfd_secret
+
+syscalltbl = $(srctree)/tools/perf/arch/arm64/entry/syscalls/syscall_%.tbl