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| author |   Masami Hiramatsu <mhiramat@kernel.org> | 2016-07-12 19:05:56 +0900 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-07-13 23:09:09 -0300 |
| commit | e26e63be64a108c1fd12020b93b5b447ffe0532b (patch) | |
| tree | 456d74dd1e29ca602315eaa9a77460146c7e4f96 /tools/build | |
| parent | perf probe: Support a special SDT probe format (diff) | |
| download | wireguard-linux-e26e63be64a108c1fd12020b93b5b447ffe0532b.tar.xz wireguard-linux-e26e63be64a108c1fd12020b93b5b447ffe0532b.zip | |
perf build: Add sdt feature detection
This checks whether sys/sdt.h is available or not, which is required for
DTRACE_PROBE().
We can disable this feature by passing NO_SDT=1 when building.
This flag will be used for SDT test case and further SDT events in
perftools.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/146831795615.17065.17513820540591053933.stgit@devbox
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/build')
| -rw-r--r-- | tools/build/Makefile.feature | 3 | ||||
| -rw-r--r-- | tools/build/feature/Makefile | 6 | ||||
| -rw-r--r-- | tools/build/feature/test-all.c | 5 | ||||
| -rw-r--r-- | tools/build/feature/test-sdt.c | 7 |
4 files changed, 19 insertions, 2 deletions
diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature index fe12bee57418..a120c6b755a9 100644 --- a/tools/build/Makefile.feature +++ b/tools/build/Makefile.feature @@ -62,7 +62,8 @@ FEATURE_TESTS_BASIC := \ zlib \ lzma \ get_cpuid \ - bpf + bpf \ + sdt # FEATURE_TESTS_BASIC + FEATURE_TESTS_EXTRA is the complete list # of all feature tests diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile index d6017c1abdb0..a0b29a311816 100644 --- a/tools/build/feature/Makefile +++ b/tools/build/feature/Makefile @@ -45,7 +45,8 @@ FILES= \ test-zlib.bin \ test-lzma.bin \ test-bpf.bin \ - test-get_cpuid.bin + test-get_cpuid.bin \ + test-sdt.bin FILES := $(addprefix $(OUTPUT),$(FILES)) @@ -213,6 +214,9 @@ $(OUTPUT)test-get_cpuid.bin: $(OUTPUT)test-bpf.bin: $(BUILD) +$(OUTPUT)test-sdt.bin: + $(BUILD) + -include $(OUTPUT)*.d ############################### diff --git a/tools/build/feature/test-all.c b/tools/build/feature/test-all.c index 843aed024a3a..699e43627397 100644 --- a/tools/build/feature/test-all.c +++ b/tools/build/feature/test-all.c @@ -145,6 +145,10 @@ # include "test-libcrypto.c" #undef main +#define main main_test_sdt +# include "test-sdt.c" +#undef main + int main(int argc, char *argv[]) { main_test_libpython(); @@ -178,6 +182,7 @@ int main(int argc, char *argv[]) main_test_get_cpuid(); main_test_bpf(); main_test_libcrypto(); + main_test_sdt(); return 0; } diff --git a/tools/build/feature/test-sdt.c b/tools/build/feature/test-sdt.c new file mode 100644 index 000000000000..e4531a6e80ea --- /dev/null +++ b/tools/build/feature/test-sdt.c @@ -0,0 +1,7 @@ +#include <sys/sdt.h> + +int main(void) +{ + DTRACE_PROBE(provider, name); + return 0; +} |