diff options
Diffstat (limited to 'powerpc/pmu/ebb/ebb_on_child_test.c')
-rw-r--r-- | powerpc/pmu/ebb/ebb_on_child_test.c | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/powerpc/pmu/ebb/ebb_on_child_test.c b/powerpc/pmu/ebb/ebb_on_child_test.c deleted file mode 100644 index c45f948..0000000 --- a/powerpc/pmu/ebb/ebb_on_child_test.c +++ /dev/null @@ -1,86 +0,0 @@ -/* - * Copyright 2014, Michael Ellerman, IBM Corp. - * Licensed under GPLv2. - */ - -#include <signal.h> -#include <stdio.h> -#include <stdlib.h> -#include <stdbool.h> -#include <sys/types.h> -#include <sys/wait.h> -#include <unistd.h> - -#include "ebb.h" - - -/* - * Tests we can setup an EBB on our child. Nothing interesting happens, because - * even though the event is enabled and running the child hasn't enabled the - * actual delivery of the EBBs. - */ - -static int victim_child(union pipe read_pipe, union pipe write_pipe) -{ - int i; - - FAIL_IF(wait_for_parent(read_pipe)); - FAIL_IF(notify_parent(write_pipe)); - - /* Parent creates EBB event */ - - FAIL_IF(wait_for_parent(read_pipe)); - FAIL_IF(notify_parent(write_pipe)); - - /* Check the EBB is enabled by writing PMC1 */ - write_pmc1(); - - /* EBB event is enabled here */ - for (i = 0; i < 1000000; i++) ; - - return 0; -} - -int ebb_on_child(void) -{ - union pipe read_pipe, write_pipe; - struct event event; - pid_t pid; - - FAIL_IF(pipe(read_pipe.fds) == -1); - FAIL_IF(pipe(write_pipe.fds) == -1); - - pid = fork(); - if (pid == 0) { - /* NB order of pipes looks reversed */ - exit(victim_child(write_pipe, read_pipe)); - } - - FAIL_IF(sync_with_child(read_pipe, write_pipe)); - - /* Child is running now */ - - 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_with_pid(&event, pid)); - FAIL_IF(ebb_event_enable(&event)); - - FAIL_IF(sync_with_child(read_pipe, write_pipe)); - - /* Child should just exit happily */ - FAIL_IF(wait_for_child(pid)); - - event_close(&event); - - return 0; -} - -int main(void) -{ - return test_harness(ebb_on_child, "ebb_on_child"); -} |