selftests/powerpc: Add test of L3 bank handling

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Michael Ellerman 2014-07-23 17:31:34 +10:00 committed by Benjamin Herrenschmidt
parent 6873def900
commit 1feaa87c2f
2 changed files with 49 additions and 1 deletions

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@ -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

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@ -0,0 +1,48 @@
/*
* Copyright 2014, Michael Ellerman, IBM Corp.
* Licensed under GPLv2.
*/
#include <stdio.h>
#include <stdlib.h>
#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");
}