diff options
Diffstat (limited to 'powerpc/pmu/ebb/cycles_with_mmcr2_test.c')
-rw-r--r-- | powerpc/pmu/ebb/cycles_with_mmcr2_test.c | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/powerpc/pmu/ebb/cycles_with_mmcr2_test.c b/powerpc/pmu/ebb/cycles_with_mmcr2_test.c deleted file mode 100644 index d43029b..0000000 --- a/powerpc/pmu/ebb/cycles_with_mmcr2_test.c +++ /dev/null @@ -1,91 +0,0 @@ -/* - * Copyright 2014, Michael Ellerman, IBM Corp. - * Licensed under GPLv2. - */ - -#include <stdio.h> -#include <stdlib.h> -#include <stdbool.h> - -#include "ebb.h" - - -/* - * Test of counting cycles while manipulating the user accessible bits in MMCR2. - */ - -/* We use two values because the first freezes PMC1 and so we would get no EBBs */ -#define MMCR2_EXPECTED_1 0x4020100804020000UL /* (FC1P|FC2P|FC3P|FC4P|FC5P|FC6P) */ -#define MMCR2_EXPECTED_2 0x0020100804020000UL /* ( FC2P|FC3P|FC4P|FC5P|FC6P) */ - - -int cycles_with_mmcr2(void) -{ - struct event event; - uint64_t val, expected[2], actual; - int i; - bool bad_mmcr2; - - 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)); - - ebb_enable_pmc_counting(1); - setup_ebb_handler(standard_ebb_callee); - ebb_global_enable(); - - FAIL_IF(ebb_event_enable(&event)); - - mtspr(SPRN_PMC1, pmc_sample_period(sample_period)); - - /* XXX Set of MMCR2 must be after enable */ - expected[0] = MMCR2_EXPECTED_1; - expected[1] = MMCR2_EXPECTED_2; - i = 0; - bad_mmcr2 = false; - - /* Make sure we loop until we take at least one EBB */ - while ((ebb_state.stats.ebb_count < 20 && !bad_mmcr2) || - ebb_state.stats.ebb_count < 1) - { - mtspr(SPRN_MMCR2, expected[i % 2]); - - FAIL_IF(core_busy_loop()); - - val = mfspr(SPRN_MMCR2); - if (val != expected[i % 2]) { - bad_mmcr2 = true; - actual = val; - } - - i++; - } - - ebb_global_disable(); - ebb_freeze_pmcs(); - - count_pmc(1, sample_period); - - dump_ebb_state(); - - event_close(&event); - - FAIL_IF(ebb_state.stats.ebb_count == 0); - - if (bad_mmcr2) - printf("Bad MMCR2 value seen is 0x%lx\n", actual); - - FAIL_IF(bad_mmcr2); - - return 0; -} - -int main(void) -{ - return test_harness(cycles_with_mmcr2, "cycles_with_mmcr2"); -} |