This should speed up accessing new system calls introduced with the kernel rather than waiting for libaudit updates to include them.
Signed-off-by: Ravi Bangoria <ravi.bango...@linux.vnet.ibm.com> --- tools/perf/arch/powerpc/Makefile | 21 +++++++++++++ .../perf/arch/powerpc/entry/syscalls/mksyscalltbl | 35 ++++++++++++++++++++++ 2 files changed, 56 insertions(+) create mode 100755 tools/perf/arch/powerpc/entry/syscalls/mksyscalltbl diff --git a/tools/perf/arch/powerpc/Makefile b/tools/perf/arch/powerpc/Makefile index 42dab7c..c93e8f4 100644 --- a/tools/perf/arch/powerpc/Makefile +++ b/tools/perf/arch/powerpc/Makefile @@ -6,3 +6,24 @@ 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/powerpc/include/generated/asm +header := $(out)/syscalls_64.c +sysdef := $(srctree)/tools/arch/powerpc/include/uapi/asm/unistd.h +sysprf := $(srctree)/tools/perf/arch/powerpc/entry/syscalls/ +systbl := $(sysprf)/mksyscalltbl + +# Create output directory if not already present +_dummy := $(shell [ -d '$(out)' ] || mkdir -p '$(out)') + +$(header): $(sysdef) $(systbl) + $(Q)$(SHELL) '$(systbl)' '$(CC)' $(sysdef) > $@ + +clean:: + $(call QUIET_CLEAN, powerpc) $(RM) $(header) + +archheaders: $(header) diff --git a/tools/perf/arch/powerpc/entry/syscalls/mksyscalltbl b/tools/perf/arch/powerpc/entry/syscalls/mksyscalltbl new file mode 100755 index 0000000..975947c --- /dev/null +++ b/tools/perf/arch/powerpc/entry/syscalls/mksyscalltbl @@ -0,0 +1,35 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# +# Generate system call table for perf. Derived from +# s390 script. +# +# Copyright IBM Corp. 2017 +# Author(s): Hendrik Brueckner <brueck...@linux.vnet.ibm.com> +# Changed by: Ravi Bangoria <ravi.bango...@linux.vnet.ibm.com> + +gcc=$1 +input=$2 + +if ! test -r $input; then + echo "Could not read input file" >&2 + exit 1 +fi + +create_table() +{ + local max_nr + + echo 'static const char *syscalltbl_powerpc_64[] = {' + while read sc nr; do + printf '\t[%d] = "%s",\n' $nr $sc + max_nr=$nr + done + echo '};' + echo "#define SYSCALLTBL_POWERPC_64_MAX_ID $max_nr" +} + +$gcc -m64 -E -dM -x c $input \ + |sed -ne 's/^#define __NR_//p' \ + |sort -t' ' -k2 -nu \ + |create_table -- 1.8.3.1