linux-kernel - [tip:perf/core] perf trace arm64: Use generated syscall table

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Date:   Wed, 25 Jul 2018 13:48:53 -0700
From:   tip-bot for Kim Phillips <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     ravi.bangoria@...ux.vnet.ibm.com, mingo@...nel.org,
        brueckner@...ux.ibm.com, tglx@...utronix.de, namhyung@...nel.org,
        jolsa@...hat.com, tmricht@...ux.vnet.ibm.com, kim.phillips@....com,
        linux-kernel@...r.kernel.org, hpa@...or.com, peterz@...radead.org,
        mpe@...erman.id.au, acme@...hat.com,
        alexander.shishkin@...ux.intel.com
Subject: [tip:perf/core] perf trace arm64: Use generated syscall table

Commit-ID:  a7f660d6576a5f4504c8ab4f4956bba03d48bf52
Gitweb:     https://git.kernel.org/tip/a7f660d6576a5f4504c8ab4f4956bba03d48bf52
Author:     Kim Phillips <kim.phillips@....com>
AuthorDate: Fri, 6 Jul 2018 16:34:54 -0500
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Tue, 24 Jul 2018 14:53:01 -0300

perf trace arm64: Use generated syscall table

This should speed up accessing new system calls introduced with the
kernel rather than waiting for libaudit updates to include them.

It also enables users to specify wildcards, for example, perf trace -e
'open*', just like was already possible on x86, s390, and powerpc, which
means arm64 can now pass the "Check open filename arg using perf trace +
vfs_getname" test.

Signed-off-by: Kim Phillips <kim.phillips@....com>
Reviewed-by: Hendrik Brueckner <brueckner@...ux.ibm.com>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Michael Ellerman <mpe@...erman.id.au>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Ravi Bangoria <ravi.bangoria@...ux.vnet.ibm.com>
Cc: Thomas Richter <tmricht@...ux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/20180706163454.f714b9ab49ecc8566a0b3565@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/Makefile.config   | 2 ++
 tools/perf/util/syscalltbl.c | 4 ++++
 2 files changed, 6 insertions(+)

diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index f5a3b402589e..d3318f99006c 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -54,6 +54,8 @@ endif
 
 ifeq ($(SRCARCH),arm64)
   NO_PERF_REGS := 0
+  NO_SYSCALL_TABLE := 0
+  CFLAGS += -I$(OUTPUT)arch/arm64/include/generated
   LIBUNWIND_LIBS = -lunwind -lunwind-aarch64
 endif
 
diff --git a/tools/perf/util/syscalltbl.c b/tools/perf/util/syscalltbl.c
index 0ee7f568d60c..3393d7ee9401 100644
--- a/tools/perf/util/syscalltbl.c
+++ b/tools/perf/util/syscalltbl.c
@@ -38,6 +38,10 @@ static const char **syscalltbl_native = syscalltbl_powerpc_64;
 #include <asm/syscalls_32.c>
 const int syscalltbl_native_max_id = SYSCALLTBL_POWERPC_32_MAX_ID;
 static const char **syscalltbl_native = syscalltbl_powerpc_32;
+#elif defined(__aarch64__)
+#include <asm/syscalls.c>
+const int syscalltbl_native_max_id = SYSCALLTBL_ARM64_MAX_ID;
+static const char **syscalltbl_native = syscalltbl_arm64;
 #endif
 
 struct syscall {