From 1feaa87c2fd7d610d154a3b7b739870030d2a7aa Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Wed, 23 Jul 2014 17:31:34 +1000 Subject: [PATCH] selftests/powerpc: Add test of L3 bank handling Signed-off-by: Michael Ellerman Signed-off-by: Benjamin Herrenschmidt --- tools/testing/selftests/powerpc/pmu/Makefile | 2 +- .../selftests/powerpc/pmu/l3_bank_test.c | 48 +++++++++++++++++++ 2 files changed, 49 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/powerpc/pmu/l3_bank_test.c diff --git a/tools/testing/selftests/powerpc/pmu/Makefile b/tools/testing/selftests/powerpc/pmu/Makefile index cd256277c24e..ebc0e7449cd9 100644 --- a/tools/testing/selftests/powerpc/pmu/Makefile +++ b/tools/testing/selftests/powerpc/pmu/Makefile @@ -1,7 +1,7 @@ noarg: $(MAKE) -C ../ -PROGS := count_instructions +PROGS := count_instructions l3_bank_test EXTRA_SOURCES := ../harness.c event.c SUB_TARGETS = ebb diff --git a/tools/testing/selftests/powerpc/pmu/l3_bank_test.c b/tools/testing/selftests/powerpc/pmu/l3_bank_test.c new file mode 100644 index 000000000000..77472f31441e --- /dev/null +++ b/tools/testing/selftests/powerpc/pmu/l3_bank_test.c @@ -0,0 +1,48 @@ +/* + * Copyright 2014, Michael Ellerman, IBM Corp. + * Licensed under GPLv2. + */ + +#include +#include + +#include "event.h" +#include "utils.h" + +#define MALLOC_SIZE (0x10000 * 10) /* Ought to be enough .. */ + +/* + * Tests that the L3 bank handling is correct. We fixed it in commit e9aaac1. + */ +static int l3_bank_test(void) +{ + struct event event; + char *p; + int i; + + p = malloc(MALLOC_SIZE); + FAIL_IF(!p); + + event_init(&event, 0x84918F); + + FAIL_IF(event_open(&event)); + + for (i = 0; i < MALLOC_SIZE; i += 0x10000) + p[i] = i; + + event_read(&event); + event_report(&event); + + FAIL_IF(event.result.running == 0); + FAIL_IF(event.result.enabled == 0); + + event_close(&event); + free(p); + + return 0; +} + +int main(void) +{ + return test_harness(l3_bank_test, "l3_bank_test"); +} -- GitLab