b3539d214f
When building on powerpc, we get compile errors in bp_signal.c and bp_signal_overflow.c due to __u64 and '%llx'. Powerpc, needs __SANE_USERSPACE_TYPES__ to be defined so we pick up <asm-generic/int-ll64.h> and define __u64 as unsigned long long. Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20130426173320.GA7029@us.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
132 lines
2.7 KiB
C
132 lines
2.7 KiB
C
/*
|
|
* Originally done by Vince Weaver <vincent.weaver@maine.edu> for
|
|
* perf_event_tests (git://github.com/deater/perf_event_tests)
|
|
*/
|
|
|
|
/*
|
|
* Powerpc needs __SANE_USERSPACE_TYPES__ before <linux/types.h> to select
|
|
* 'int-ll64.h' and avoid compile warnings when printing __u64 with %llu.
|
|
*/
|
|
#define __SANE_USERSPACE_TYPES__
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <sys/ioctl.h>
|
|
#include <time.h>
|
|
#include <fcntl.h>
|
|
#include <signal.h>
|
|
#include <sys/mman.h>
|
|
#include <linux/compiler.h>
|
|
#include <linux/hw_breakpoint.h>
|
|
|
|
#include "tests.h"
|
|
#include "debug.h"
|
|
#include "perf.h"
|
|
|
|
static int overflows;
|
|
|
|
__attribute__ ((noinline))
|
|
static int test_function(void)
|
|
{
|
|
return time(NULL);
|
|
}
|
|
|
|
static void sig_handler(int signum __maybe_unused,
|
|
siginfo_t *oh __maybe_unused,
|
|
void *uc __maybe_unused)
|
|
{
|
|
overflows++;
|
|
}
|
|
|
|
static long long bp_count(int fd)
|
|
{
|
|
long long count;
|
|
int ret;
|
|
|
|
ret = read(fd, &count, sizeof(long long));
|
|
if (ret != sizeof(long long)) {
|
|
pr_debug("failed to read: %d\n", ret);
|
|
return TEST_FAIL;
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
#define EXECUTIONS 10000
|
|
#define THRESHOLD 100
|
|
|
|
int test__bp_signal_overflow(void)
|
|
{
|
|
struct perf_event_attr pe;
|
|
struct sigaction sa;
|
|
long long count;
|
|
int fd, i, fails = 0;
|
|
|
|
/* setup SIGIO signal handler */
|
|
memset(&sa, 0, sizeof(struct sigaction));
|
|
sa.sa_sigaction = (void *) sig_handler;
|
|
sa.sa_flags = SA_SIGINFO;
|
|
|
|
if (sigaction(SIGIO, &sa, NULL) < 0) {
|
|
pr_debug("failed setting up signal handler\n");
|
|
return TEST_FAIL;
|
|
}
|
|
|
|
memset(&pe, 0, sizeof(struct perf_event_attr));
|
|
pe.type = PERF_TYPE_BREAKPOINT;
|
|
pe.size = sizeof(struct perf_event_attr);
|
|
|
|
pe.config = 0;
|
|
pe.bp_type = HW_BREAKPOINT_X;
|
|
pe.bp_addr = (unsigned long) test_function;
|
|
pe.bp_len = sizeof(long);
|
|
|
|
pe.sample_period = THRESHOLD;
|
|
pe.sample_type = PERF_SAMPLE_IP;
|
|
pe.wakeup_events = 1;
|
|
|
|
pe.disabled = 1;
|
|
pe.exclude_kernel = 1;
|
|
pe.exclude_hv = 1;
|
|
|
|
fd = sys_perf_event_open(&pe, 0, -1, -1, 0);
|
|
if (fd < 0) {
|
|
pr_debug("failed opening event %llx\n", pe.config);
|
|
return TEST_FAIL;
|
|
}
|
|
|
|
fcntl(fd, F_SETFL, O_RDWR|O_NONBLOCK|O_ASYNC);
|
|
fcntl(fd, F_SETSIG, SIGIO);
|
|
fcntl(fd, F_SETOWN, getpid());
|
|
|
|
ioctl(fd, PERF_EVENT_IOC_RESET, 0);
|
|
ioctl(fd, PERF_EVENT_IOC_ENABLE, 0);
|
|
|
|
for (i = 0; i < EXECUTIONS; i++)
|
|
test_function();
|
|
|
|
ioctl(fd, PERF_EVENT_IOC_DISABLE, 0);
|
|
|
|
count = bp_count(fd);
|
|
|
|
close(fd);
|
|
|
|
pr_debug("count %lld, overflow %d\n",
|
|
count, overflows);
|
|
|
|
if (count != EXECUTIONS) {
|
|
pr_debug("\tWrong number of executions %lld != %d\n",
|
|
count, EXECUTIONS);
|
|
fails++;
|
|
}
|
|
|
|
if (overflows != EXECUTIONS / THRESHOLD) {
|
|
pr_debug("\tWrong number of overflows %d != %d\n",
|
|
overflows, EXECUTIONS / THRESHOLD);
|
|
fails++;
|
|
}
|
|
|
|
return fails ? TEST_FAIL : TEST_OK;
|
|
}
|