39fcfb911c
EBB (Event Based Branches) are currently only available on POWER8, so we should skip them on other CPUs. I've found that at least one test loops forever on 970MP (cycles_with_freeze_test). Signed-off-by: Denis Kirjanov <kda@linux-powerpc.org> [mpe: Minor change log editing, add skip to cpu_event_vs_ebb_test] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
134 lines
2.9 KiB
C
134 lines
2.9 KiB
C
/*
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* Copyright 2014, Michael Ellerman, IBM Corp.
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* Licensed under GPLv2.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "ebb.h"
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/*
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* Test various attributes of the EBB event are enforced.
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*/
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int event_attributes(void)
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{
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struct event event, leader;
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SKIP_IF(!ebb_is_supported());
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event_init(&event, 0x1001e);
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event_leader_ebb_init(&event);
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/* Expected to succeed */
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FAIL_IF(event_open(&event));
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event_close(&event);
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event_init(&event, 0x001e); /* CYCLES - no PMC specified */
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event_leader_ebb_init(&event);
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/* Expected to fail, no PMC specified */
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FAIL_IF(event_open(&event) == 0);
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event_init(&event, 0x2001e);
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event_leader_ebb_init(&event);
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event.attr.exclusive = 0;
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/* Expected to fail, not exclusive */
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FAIL_IF(event_open(&event) == 0);
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event_init(&event, 0x3001e);
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event_leader_ebb_init(&event);
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event.attr.freq = 1;
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/* Expected to fail, sets freq */
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FAIL_IF(event_open(&event) == 0);
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event_init(&event, 0x4001e);
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event_leader_ebb_init(&event);
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event.attr.sample_period = 1;
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/* Expected to fail, sets sample_period */
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FAIL_IF(event_open(&event) == 0);
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event_init(&event, 0x1001e);
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event_leader_ebb_init(&event);
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event.attr.enable_on_exec = 1;
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/* Expected to fail, sets enable_on_exec */
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FAIL_IF(event_open(&event) == 0);
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event_init(&event, 0x1001e);
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event_leader_ebb_init(&event);
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event.attr.inherit = 1;
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/* Expected to fail, sets inherit */
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FAIL_IF(event_open(&event) == 0);
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event_init(&leader, 0x1001e);
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event_leader_ebb_init(&leader);
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FAIL_IF(event_open(&leader));
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event_init(&event, 0x20002);
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event_ebb_init(&event);
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/* Expected to succeed */
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FAIL_IF(event_open_with_group(&event, leader.fd));
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event_close(&leader);
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event_close(&event);
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event_init(&leader, 0x1001e);
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event_leader_ebb_init(&leader);
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FAIL_IF(event_open(&leader));
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event_init(&event, 0x20002);
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/* Expected to fail, event doesn't request EBB, leader does */
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FAIL_IF(event_open_with_group(&event, leader.fd) == 0);
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event_close(&leader);
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event_init(&leader, 0x1001e);
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event_leader_ebb_init(&leader);
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/* Clear the EBB flag */
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leader.attr.config &= ~(1ull << 63);
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FAIL_IF(event_open(&leader));
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event_init(&event, 0x20002);
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event_ebb_init(&event);
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/* Expected to fail, leader doesn't request EBB */
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FAIL_IF(event_open_with_group(&event, leader.fd) == 0);
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event_close(&leader);
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event_init(&leader, 0x1001e);
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event_leader_ebb_init(&leader);
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leader.attr.exclusive = 0;
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/* Expected to fail, leader isn't exclusive */
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FAIL_IF(event_open(&leader) == 0);
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event_init(&leader, 0x1001e);
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event_leader_ebb_init(&leader);
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leader.attr.pinned = 0;
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/* Expected to fail, leader isn't pinned */
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FAIL_IF(event_open(&leader) == 0);
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event_init(&event, 0x1001e);
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event_leader_ebb_init(&event);
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/* Expected to fail, not a task event */
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SKIP_IF(require_paranoia_below(1));
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FAIL_IF(event_open_with_cpu(&event, 0) == 0);
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return 0;
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}
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int main(void)
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{
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return test_harness(event_attributes, "event_attributes");
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}
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