[PATCH 35/41] perf trace powerpc: Use generated syscall table

Arnaldo Carvalho de Melo acme at kernel.org
Sat Feb 17 06:17:40 AEDT 2018


From: Ravi Bangoria <ravi.bangoria at 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.

It also enables users to specify wildcards, for example, perf trace -e
'open*', just like was already possible on x86 and s390.

Signed-off-by: Ravi Bangoria <ravi.bangoria at linux.vnet.ibm.com>
Cc: Alexander Shishkin <alexander.shishkin at linux.intel.com>
Cc: Hendrik Brueckner <brueckner at linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa at redhat.com>
Cc: Michael Ellerman <mpe at ellerman.id.au>
Cc: Namhyung Kim <namhyung at kernel.org>
Cc: Thomas Richter <tmricht at linux.vnet.ibm.com>
Cc: linuxppc-dev at lists.ozlabs.org
Link: http://lkml.kernel.org/r/20180129083417.31240-4-ravi.bangoria@linux.vnet.ibm.com
[ Do it for ppc32 as well ]
Signed-off-by: Arnaldo Carvalho de Melo <acme at redhat.com>
---
 tools/perf/Makefile.config   | 2 ++
 tools/perf/util/syscalltbl.c | 8 ++++++++
 2 files changed, 10 insertions(+)

diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index 0dfdaa9fa81e..577a5d2988fe 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -27,6 +27,8 @@ NO_SYSCALL_TABLE := 1
 # Additional ARCH settings for ppc
 ifeq ($(SRCARCH),powerpc)
   NO_PERF_REGS := 0
+  NO_SYSCALL_TABLE := 0
+  CFLAGS += -I$(OUTPUT)arch/powerpc/include/generated
   LIBUNWIND_LIBS := -lunwind -lunwind-ppc64
 endif
 
diff --git a/tools/perf/util/syscalltbl.c b/tools/perf/util/syscalltbl.c
index 303bdb84ab5a..895122d638dd 100644
--- a/tools/perf/util/syscalltbl.c
+++ b/tools/perf/util/syscalltbl.c
@@ -30,6 +30,14 @@ static const char **syscalltbl_native = syscalltbl_x86_64;
 #include <asm/syscalls_64.c>
 const int syscalltbl_native_max_id = SYSCALLTBL_S390_64_MAX_ID;
 static const char **syscalltbl_native = syscalltbl_s390_64;
+#elif defined(__powerpc64__)
+#include <asm/syscalls_64.c>
+const int syscalltbl_native_max_id = SYSCALLTBL_POWERPC_64_MAX_ID;
+static const char **syscalltbl_native = syscalltbl_powerpc_64;
+#elif defined(__powerpc__)
+#include <asm/syscalls_32.c>
+const int syscalltbl_native_max_id = SYSCALLTBL_POWERPC_32_MAX_ID;
+static const char **syscalltbl_native = syscalltbl_powerpc_32;
 #endif
 
 struct syscall {
-- 
2.14.3



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