lkml.org 
[lkml]   [2014]   [Jan]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 11/16] perf tools: Introduce HAVE_DWARF_UNWIND_SUPPORT macro
Date
Introducing global macro HAVE_DWARF_UNWIND_SUPPORT to indicate
we have dwarf unwind support. Any library providing the dwarf
post unwind support will enable this macro.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jean Pihet <jean.pihet@linaro.org>
---
tools/perf/builtin-record.c | 10 +++++-----
tools/perf/config/Makefile | 2 +-
tools/perf/tests/builtin-test.c | 2 +-
tools/perf/tests/tests.h | 2 +-
tools/perf/util/unwind.h | 7 +++++--
5 files changed, 13 insertions(+), 10 deletions(-)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index cb00b53..349c5c0 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -650,7 +650,7 @@ error:
return ret;
}

-#ifdef HAVE_LIBUNWIND_SUPPORT
+#ifdef HAVE_DWARF_UNWIND_SUPPORT
static int get_stack_size(char *str, unsigned long *_size)
{
char *endptr;
@@ -676,7 +676,7 @@ static int get_stack_size(char *str, unsigned long *_size)
max_size, str);
return -1;
}
-#endif /* HAVE_LIBUNWIND_SUPPORT */
+#endif /* HAVE_DWARF_UNWIND_SUPPORT */

int record_parse_callchain(const char *arg, struct record_opts *opts)
{
@@ -705,7 +705,7 @@ int record_parse_callchain(const char *arg, struct record_opts *opts)
"needed for -g fp\n");
break;

-#ifdef HAVE_LIBUNWIND_SUPPORT
+#ifdef HAVE_DWARF_UNWIND_SUPPORT
/* Dwarf style */
} else if (!strncmp(name, "dwarf", sizeof("dwarf"))) {
const unsigned long default_stack_dump_size = 8192;
@@ -721,7 +721,7 @@ int record_parse_callchain(const char *arg, struct record_opts *opts)
ret = get_stack_size(tok, &size);
opts->stack_dump_size = size;
}
-#endif /* HAVE_LIBUNWIND_SUPPORT */
+#endif /* HAVE_DWARF_UNWIND_SUPPORT */
} else {
pr_err("callchain: Unknown --call-graph option "
"value: %s\n", arg);
@@ -808,7 +808,7 @@ static struct record record = {

#define CALLCHAIN_HELP "setup and enables call-graph (stack chain/backtrace) recording: "

-#ifdef HAVE_LIBUNWIND_SUPPORT
+#ifdef HAVE_DWARF_UNWIND_SUPPORT
const char record_callchain_help[] = CALLCHAIN_HELP "fp dwarf";
#else
const char record_callchain_help[] = CALLCHAIN_HELP "fp";
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index 5d15b43..1bc78d2 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -337,7 +337,7 @@ ifndef NO_LIBUNWIND
CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
endif

- CFLAGS += -DHAVE_LIBUNWIND_SUPPORT
+ CFLAGS += -DHAVE_DWARF_UNWIND_SUPPORT -DHAVE_LIBUNWIND_SUPPORT
EXTLIBS += $(LIBUNWIND_LIBS)
CFLAGS += $(LIBUNWIND_CFLAGS)
LDFLAGS += $(LIBUNWIND_LDFLAGS)
diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index f5a6ffb..b11bf8a 100644
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -116,7 +116,7 @@ static struct test {
.func = test__parse_no_sample_id_all,
},
#if defined(__x86_64__) || defined(__i386__)
-#ifdef HAVE_LIBUNWIND_SUPPORT
+#ifdef HAVE_DWARF_UNWIND_SUPPORT
{
.desc = "Test dwarf unwind",
.func = test__dwarf_unwind,
diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h
index 8979309..a24795c 100644
--- a/tools/perf/tests/tests.h
+++ b/tools/perf/tests/tests.h
@@ -43,7 +43,7 @@ int test__parse_no_sample_id_all(void);
int test__dwarf_unwind(void);

#if defined(__x86_64__) || defined(__i386__)
-#ifdef HAVE_LIBUNWIND_SUPPORT
+#ifdef HAVE_DWARF_UNWIND_SUPPORT
struct thread;
struct perf_sample;
int test__arch_unwind_sample(struct perf_sample *sample,
diff --git a/tools/perf/util/unwind.h b/tools/perf/util/unwind.h
index 18f33b4..b031316 100644
--- a/tools/perf/util/unwind.h
+++ b/tools/perf/util/unwind.h
@@ -13,12 +13,15 @@ struct unwind_entry {

typedef int (*unwind_entry_cb_t)(struct unwind_entry *entry, void *arg);

-#ifdef HAVE_LIBUNWIND_SUPPORT
+#ifdef HAVE_DWARF_UNWIND_SUPPORT
int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
struct machine *machine,
struct thread *thread,
struct perf_sample *data, int max_stack);
+/* libunwind specific */
+#ifdef HAVE_LIBUNWIND_SUPPORT
int libunwind__arch_reg_id(int regnum);
+#endif
#else
static inline int
unwind__get_entries(unwind_entry_cb_t cb __maybe_unused,
@@ -30,5 +33,5 @@ unwind__get_entries(unwind_entry_cb_t cb __maybe_unused,
{
return 0;
}
-#endif /* HAVE_LIBUNWIND_SUPPORT */
+#endif /* HAVE_DWARF_UNWIND_SUPPORT */
#endif /* __UNWIND_H */
--
1.8.3.1


\
 
 \ /
  Last update: 2014-01-07 14:41    [W:0.182 / U:1.784 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site