From: Hendrik Brueckner <brueck...@linux.vnet.ibm.com>
This should speed up accessing new system calls introduced with
the kernel rather than waiting for libaudit updates to include
them.
Committer testing:
$ rm -rf /tmp/build/perf
$ mkdir /tmp/build/perf
$ make srctree=/home/acme/git/perf -C tools/perf/arch/s390
OUTPUT=/tmp/build/perf/ archheaders
make: Entering directory '/home/acme/git/perf/tools/perf/arch/s390'
/bin/sh
'/home/acme/git/perf/tools/perf/arch/s390/entry/syscalls//mksyscalltbl' 'cc'
/home/acme/git/perf/tools/arch/s390/include/uapi/asm/unistd.h >
/tmp/build/perf/arch/s390/include/generated/asm/syscalls_64.c
make: Leaving directory '/home/acme/git/perf/tools/perf/arch/s390'
$ head -5 /tmp/build/perf/arch/s390/include/generated/asm/syscalls_64.c
static const char *syscalltbl_s390_64[] = {
[1] = "exit",
[2] = "fork",
[3] = "read",
[4] = "write",
$ tail -5 /tmp/build/perf/arch/s390/include/generated/asm/syscalls_64.c
[378] = "s390_guarded_storage",
[379] = "statx",
[380] = "s390_sthyi",
};
#define SYSCALLTBL_S390_64_MAX_ID 380
$
Now to plug this into 'perf trace' proper.
Signed-off-by: Hendrik Brueckner <brueck...@linux.vnet.ibm.com>
Reviewed-by: Thomas Richter <tmri...@linux.vnet.ibm.com>
Tested-by: Arnaldo Carvalho de Melo <a...@redhat.com>
Cc: Jiri Olsa <jo...@redhat.com>
Cc: Michael Petlan <mpet...@redhat.com>
Cc: linux-s...@vger.kernel.org
LPU-Reference: 1512635281-20733-2-git-send-email-brueck...@linux.vnet.ibm.com
Link: https://lkml.kernel.org/n/tip-h5km60rdg3rqxvsys85q5...@git.kernel.org
[ split from a larger patch ]
Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com>
---
tools/perf/arch/s390/Makefile | 21 ++++++++++++++
tools/perf/arch/s390/entry/syscalls/mksyscalltbl | 36 ++++++++++++++++++++++++
2 files changed, 57 insertions(+)
create mode 100755 tools/perf/arch/s390/entry/syscalls/mksyscalltbl
diff --git a/tools/perf/arch/s390/Makefile b/tools/perf/arch/s390/Makefile
index 09ba923debe8..48228de415d0 100644
--- a/tools/perf/arch/s390/Makefile
+++ b/tools/perf/arch/s390/Makefile
@@ -3,3 +3,24 @@ PERF_HAVE_DWARF_REGS := 1
endif
HAVE_KVM_STAT_SUPPORT := 1
PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET := 1
+
+#
+# Syscall table generation for perf
+#
+
+out := $(OUTPUT)arch/s390/include/generated/asm
+header := $(out)/syscalls_64.c
+sysdef := $(srctree)/tools/arch/s390/include/uapi/asm/unistd.h
+sysprf := $(srctree)/tools/perf/arch/s390/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, s390) $(RM) $(header)
+
+archheaders: $(header)
diff --git a/tools/perf/arch/s390/entry/syscalls/mksyscalltbl
b/tools/perf/arch/s390/entry/syscalls/mksyscalltbl
new file mode 100755
index 000000000000..7fa0d0abd419
--- /dev/null
+++ b/tools/perf/arch/s390/entry/syscalls/mksyscalltbl
@@ -0,0 +1,36 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+#
+# Generate system call table for perf
+#
+#
+# Copyright IBM Corp. 2017
+# Author(s): Hendrik Brueckner <brueck...@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_s390_64[] = {'
+ while read sc nr; do
+ printf '\t[%d] = "%s",\n' $nr $sc
+ max_nr=$nr
+ done
+ echo '};'
+ echo "#define SYSCALLTBL_S390_64_MAX_ID $max_nr"
+}
+
+
+$gcc -m64 -E -dM -x c $input \
+ |sed -ne 's/^#define __NR_//p' \
+ |sort -t' ' -k2 -nu \
+ |create_table
--
2.13.6
