diff options
| author | Jean Pihet <jean.pihet@linaro.org> | 2013-09-26 13:36:37 +0200 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2013-09-30 17:41:59 +0200 |
| commit | 405ffbd4988118c56ff127792ebddae77d2c7a43 (patch) | |
| tree | a6e57eacb60eb430d53576e94a60ccc391861ed1 /tools | |
| parent | ARM: perf: wire up perf_regs and unwind support for ARM (diff) | |
| download | linux-405ffbd4988118c56ff127792ebddae77d2c7a43.tar.xz linux-405ffbd4988118c56ff127792ebddae77d2c7a43.zip | |
perf tools: Check libunwind for availability of dwarf parsing feature
The newly added dwarf unwinding feature [1] requires:
. a recent version (>= 1.1) of libunwind,
. libunwind to be configured with --enable-debug-frame.
[1] http://www.spinics.net/lists/kernel/msg1598951.html
Add the corresponding API tests in the feature check list.
Acked-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Jean Pihet <jean.pihet@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/config/Makefile | 6 | ||||
| -rw-r--r-- | tools/perf/config/feature-tests.mak | 21 |
2 files changed, 25 insertions, 2 deletions
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile index 4796ce54e653..75b93d7f7860 100644 --- a/tools/perf/config/Makefile +++ b/tools/perf/config/Makefile @@ -226,9 +226,13 @@ endif FLAGS_UNWIND=$(LIBUNWIND_CFLAGS) $(CFLAGS) $(LIBUNWIND_LDFLAGS) $(LDFLAGS) $(EXTLIBS) $(LIBUNWIND_LIBS) ifneq ($(call try-cc,$(SOURCE_LIBUNWIND),$(FLAGS_UNWIND),libunwind),y) - msg := $(warning No libunwind found, disabling post unwind support. Please install libunwind-dev[el] >= 0.99); + msg := $(warning No libunwind found, disabling post unwind support. Please install libunwind-dev[el] >= 1.1); NO_LIBUNWIND := 1 endif # Libunwind support +ifneq ($(call try-cc,$(SOURCE_LIBUNWIND_DEBUG_FRAME),$(FLAGS_UNWIND),libunwind debug_frame),y) + msg := $(warning No debug_frame support found in libunwind); +CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME +endif # debug_frame support in libunwind endif # NO_LIBUNWIND ifndef NO_LIBUNWIND diff --git a/tools/perf/config/feature-tests.mak b/tools/perf/config/feature-tests.mak index d5a8dd44945f..40b21c0bc10a 100644 --- a/tools/perf/config/feature-tests.mak +++ b/tools/perf/config/feature-tests.mak @@ -185,7 +185,6 @@ extern int UNW_OBJ(dwarf_search_unwind_table) (unw_addr_space_t as, unw_proc_info_t *pi, int need_unwind_info, void *arg); - #define dwarf_search_unwind_table UNW_OBJ(dwarf_search_unwind_table) int main(void) @@ -197,6 +196,26 @@ int main(void) return 0; } endef + +define SOURCE_LIBUNWIND_DEBUG_FRAME +#include <libunwind.h> +#include <stdlib.h> + +extern int +UNW_OBJ(dwarf_find_debug_frame) (int found, unw_dyn_info_t *di_debug, + unw_word_t ip, unw_word_t segbase, + const char *obj_name, unw_word_t start, + unw_word_t end); + +#define dwarf_find_debug_frame UNW_OBJ(dwarf_find_debug_frame) + +int main(void) +{ + dwarf_find_debug_frame(0, NULL, 0, 0, NULL, 0, 0); + return 0; +} +endef + endif ifndef NO_BACKTRACE |