diff options
author | Arthur She <arthur.she@linaro.org> | 2014-09-18 14:17:16 -0700 |
---|---|---|
committer | Arthur She <arthur.she@linaro.org> | 2014-09-18 14:17:16 -0700 |
commit | a261017e3da7cac1b887764dced3c1c0964c2ba2 (patch) | |
tree | 117c21aa0b42865a321b078ddb71c410506c51c9 /powerpc/pmu/ebb/no_handler_test.c | |
parent | dbb5bc6a61eff1f9cd72c597b4d3a4b0d4411f04 (diff) |
Update to 72efa0ffec6a4361ef33d44ae0094714d37f4d6b from repo http://git.linaro.org/kernel/linux-linaro-tracking.git branch linux-linaro72efa0ffec6a4361ef33d44ae0094714d37f4d6blinux-linaro
Diffstat (limited to 'powerpc/pmu/ebb/no_handler_test.c')
-rw-r--r-- | powerpc/pmu/ebb/no_handler_test.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/powerpc/pmu/ebb/no_handler_test.c b/powerpc/pmu/ebb/no_handler_test.c new file mode 100644 index 0000000..2f9bf8e --- /dev/null +++ b/powerpc/pmu/ebb/no_handler_test.c @@ -0,0 +1,61 @@ +/* + * Copyright 2014, Michael Ellerman, IBM Corp. + * Licensed under GPLv2. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <setjmp.h> +#include <signal.h> + +#include "ebb.h" + + +/* Test that things work sanely if we have no handler */ + +static int no_handler_test(void) +{ + struct event event; + u64 val; + int i; + + event_init_named(&event, 0x1001e, "cycles"); + event_leader_ebb_init(&event); + + event.attr.exclude_kernel = 1; + event.attr.exclude_hv = 1; + event.attr.exclude_idle = 1; + + FAIL_IF(event_open(&event)); + FAIL_IF(ebb_event_enable(&event)); + + val = mfspr(SPRN_EBBHR); + FAIL_IF(val != 0); + + /* Make sure it overflows quickly */ + sample_period = 1000; + mtspr(SPRN_PMC1, pmc_sample_period(sample_period)); + + /* Spin to make sure the event has time to overflow */ + for (i = 0; i < 1000; i++) + mb(); + + dump_ebb_state(); + + /* We expect to see the PMU frozen & PMAO set */ + val = mfspr(SPRN_MMCR0); + FAIL_IF(val != 0x0000000080000080); + + event_close(&event); + + dump_ebb_state(); + + /* The real test is that we never took an EBB at 0x0 */ + + return 0; +} + +int main(void) +{ + return test_harness(no_handler_test,"no_handler_test"); +} |