From: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
To: acme@kernel.org
Cc: alexander.shishkin@linux.intel.com, jolsa@redhat.com,
namhyung@kernel.org, linux-kernel@vger.kernel.org,
brueckner@linux.vnet.ibm.com, tmricht@linux.vnet.ibm.com,
linuxppc-dev@lists.ozlabs.org, mpe@ellerman.id.au,
Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Subject: [PATCH 2/3] perf powerpc: Generate system call table from asm/unistd.h
Date: Mon, 29 Jan 2018 14:04:16 +0530 [thread overview]
Message-ID: <20180129083417.31240-3-ravi.bangoria@linux.vnet.ibm.com> (raw)
In-Reply-To: <20180129083417.31240-1-ravi.bangoria@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.
Signed-off-by: Ravi Bangoria <ravi.bangoria@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 <brueckner@linux.vnet.ibm.com>
+# Changed by: Ravi Bangoria <ravi.bangoria@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
next prev parent reply other threads:[~2018-01-29 8:33 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-29 8:34 [PATCH 0/3] perf trace powerpc: Remove libaudit dependency for syscalls Ravi Bangoria
2018-01-29 8:34 ` [PATCH 1/3] tools include powerpc: Grab a copy of arch/powerpc/include/uapi/asm/unistd.h Ravi Bangoria
2018-02-16 16:52 ` Arnaldo Carvalho de Melo
2018-02-16 16:56 ` Arnaldo Carvalho de Melo
2018-02-16 17:03 ` Arnaldo Carvalho de Melo
2018-02-16 17:08 ` Arnaldo Carvalho de Melo
2018-02-16 17:29 ` Arnaldo Carvalho de Melo
2018-02-16 17:50 ` Arnaldo Carvalho de Melo
2018-02-17 6:17 ` Ravi Bangoria
2018-02-19 4:49 ` Michael Ellerman
2018-02-17 11:35 ` [tip:perf/core] " tip-bot for Ravi Bangoria
2018-01-29 8:34 ` Ravi Bangoria [this message]
2018-02-17 11:36 ` [tip:perf/core] perf powerpc: Generate system call table from asm/unistd.h tip-bot for Ravi Bangoria
2018-01-29 8:34 ` [PATCH 3/3] perf trace powerpc: Use generated syscall table Ravi Bangoria
2018-01-29 10:33 ` Arnaldo Carvalho de Melo
2018-02-17 11:36 ` [tip:perf/core] " tip-bot for Ravi Bangoria
2018-02-15 13:43 ` [PATCH 0/3] perf trace powerpc: Remove libaudit dependency for syscalls Arnaldo Carvalho de Melo
2018-02-15 13:56 ` Arnaldo Carvalho de Melo
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