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perf test bpf: Check for libtraceevent support 

The "bpf" tests fails in environment with missing libtraceevent support
as below:

  # ./perf test 36
  36: BPF filter                          :
  36.1: Basic BPF filtering               : FAILED!
  36.2: BPF pinning                       : FAILED!
  36.3: BPF prologue generation           : FAILED!

The environment has clang but missing the libtraceevent devel. Hence
perf is compiled without libtraceevent support.

Detailed logs:
	./perf test -v "Basic BPF filtering"

	Failed to add BPF event syscalls:sys_enter_epoll_pwait
	bpf: tracepoint call back failed, stop iterate
	Failed to add events selected by BPF

The bpf tests tris to add probe event which fails at
"parse_events_add_tracepoint" function due to missing libtraceevent. Add
check for "HAVE_LIBTRACEEVENT" in the "tests/bpf.c" before proceeding
with the test.

With the change,

	# ./perf test 36
 	36: BPF filter                    :
 	36.1: Basic BPF filtering         : Skip (not compiled in or missing libtraceevent support)
 	36.2: BPF pinning                 : Skip (not compiled in or missing libtraceevent support)
 	36.3: BPF prologue generation     : Skip (not compiled in or missing libtraceevent support)

Signed-off-by: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Disha Goel <disgoel@linux.ibm.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nageswara R Sastry <rnsastry@linux.ibm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: linuxppc-dev@lists.ozlabs.org
Link: https://lore.kernel.org/r/20230131135001.54578-1-atrajeev@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Athira Rajeev 2023-01-31 19:20:01 +05:30 committed by Arnaldo Carvalho de Melo
parent ab809efaeb
commit ee739f132f
1 changed files with 11 additions and 11 deletions
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22
tools/perf/tests/bpf.c
View File

@ -23,7 +23,7 @@
#define NR_ITERS 111
#define PERF_TEST_BPF_PATH "/sys/fs/bpf/perf_test"
#ifdef HAVE_LIBBPF_SUPPORT
#if defined(HAVE_LIBBPF_SUPPORT) && defined(HAVE_LIBTRACEEVENT)
#include <linux/bpf.h>
#include <bpf/bpf.h>
@ -330,10 +330,10 @@ static int test__bpf(int i)
static int test__basic_bpf_test(struct test_suite *test __maybe_unused,
int subtest __maybe_unused)
{
#ifdef HAVE_LIBBPF_SUPPORT
#if defined(HAVE_LIBBPF_SUPPORT) && defined(HAVE_LIBTRACEEVENT)
return test__bpf(0);
#else
pr_debug("Skip BPF test because BPF support is not compiled\n");
pr_debug("Skip BPF test because BPF or libtraceevent support is not compiled\n");
return TEST_SKIP;
#endif
}
@ -341,10 +341,10 @@ static int test__basic_bpf_test(struct test_suite *test __maybe_unused,
static int test__bpf_pinning(struct test_suite *test __maybe_unused,
int subtest __maybe_unused)
{
#ifdef HAVE_LIBBPF_SUPPORT
#if defined(HAVE_LIBBPF_SUPPORT) && defined(HAVE_LIBTRACEEVENT)
return test__bpf(1);
#else
pr_debug("Skip BPF test because BPF support is not compiled\n");
pr_debug("Skip BPF test because BPF or libtraceevent support is not compiled\n");
return TEST_SKIP;
#endif
}
@ -352,17 +352,17 @@ static int test__bpf_pinning(struct test_suite *test __maybe_unused,
static int test__bpf_prologue_test(struct test_suite *test __maybe_unused,
int subtest __maybe_unused)
{
#if defined(HAVE_LIBBPF_SUPPORT) && defined(HAVE_BPF_PROLOGUE)
#if defined(HAVE_LIBBPF_SUPPORT) && defined(HAVE_BPF_PROLOGUE) && defined(HAVE_LIBTRACEEVENT)
return test__bpf(2);
#else
pr_debug("Skip BPF test because BPF support is not compiled\n");
pr_debug("Skip BPF test because BPF or libtraceevent support is not compiled\n");
return TEST_SKIP;
#endif
}
static struct test_case bpf_tests[] = {
#ifdef HAVE_LIBBPF_SUPPORT
#if defined(HAVE_LIBBPF_SUPPORT) && defined(HAVE_LIBTRACEEVENT)
TEST_CASE("Basic BPF filtering", basic_bpf_test),
TEST_CASE_REASON("BPF pinning", bpf_pinning,
"clang isn't installed or environment missing BPF support"),
@ -373,9 +373,9 @@ static struct test_case bpf_tests[] = {
TEST_CASE_REASON("BPF prologue generation", bpf_prologue_test, "not compiled in"),
#endif
#else
TEST_CASE_REASON("Basic BPF filtering", basic_bpf_test, "not compiled in"),
TEST_CASE_REASON("BPF pinning", bpf_pinning, "not compiled in"),
TEST_CASE_REASON("BPF prologue generation", bpf_prologue_test, "not compiled in"),
TEST_CASE_REASON("Basic BPF filtering", basic_bpf_test, "not compiled in or missing libtraceevent support"),
TEST_CASE_REASON("BPF pinning", bpf_pinning, "not compiled in or missing libtraceevent support"),
TEST_CASE_REASON("BPF prologue generation", bpf_prologue_test, "not compiled in or missing libtraceevent support"),
#endif
{ .name = NULL, }
};