#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <fcntl.h>
#include <poll.h>
#include <sys/ioctl.h>
#include <linux/perf_event.h>
#include <linux/bpf.h>
#include "libbpf.h"
#include "bpf_load.h"
#include "perf-sys.h"

#define SAMPLE_PERIOD  0x7fffffffffffffffULL

static void test_bpf_perf_event(void)
{
	int nr_cpus = sysconf(_SC_NPROCESSORS_CONF);
	int *pmu_fd = malloc(nr_cpus * sizeof(int));
	int status, i;

	struct perf_event_attr attr_insn_pmu = {
		.freq = 0,
		.sample_period = SAMPLE_PERIOD,
		.inherit = 0,
		.type = PERF_TYPE_HARDWARE,
		.read_format = 0,
		.sample_type = 0,
		.config = 0,/* PMU: cycles */
	};

	for (i = 0; i < nr_cpus; i++) {
		pmu_fd[i] = sys_perf_event_open(&attr_insn_pmu, -1/*pid*/, i/*cpu*/, -1/*group_fd*/, 0);
		if (pmu_fd[i] < 0) {
			printf("event syscall failed\n");
			goto exit;
		}

		bpf_map_update_elem(map_fd[0], &i, &pmu_fd[i], BPF_ANY);
		ioctl(pmu_fd[i], PERF_EVENT_IOC_ENABLE, 0);
	}

	status = system("ls > /dev/null");
	if (status)
		goto exit;
	status = system("sleep 2");
	if (status)
		goto exit;

exit:
	for (i = 0; i < nr_cpus; i++)
		close(pmu_fd[i]);
	close(map_fd[0]);
	free(pmu_fd);
}

int main(int argc, char **argv)
{
	char filename[256];

	snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);

	if (load_bpf_file(filename)) {
		printf("%s", bpf_log_buf);
		return 1;
	}

	test_bpf_perf_event();
	read_trace_pipe();

	return 0;
}
'>net-next plumbings</td><td class='sub right'>Tobias Klauser</td></tr></table>
<table class='tabs'><tr><td>
<a href='/cgit.cgi/linux/net-next.git/?h=nds-private-remove'>summary</a><a href='/cgit.cgi/linux/net-next.git/refs/?h=nds-private-remove&amp;id=585457fc8383e373ab923e46cd1f70bbfe46763f'>refs</a><a href='/cgit.cgi/linux/net-next.git/log/tools/usb/Makefile?h=nds-private-remove'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/tools/usb/Makefile?h=nds-private-remove&amp;id=585457fc8383e373ab923e46cd1f70bbfe46763f'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/tools/usb/Makefile?h=nds-private-remove&amp;id=585457fc8383e373ab923e46cd1f70bbfe46763f'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/tools/usb/Makefile?h=nds-private-remove&amp;id=585457fc8383e373ab923e46cd1f70bbfe46763f'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/tools/usb/Makefile'>
<input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='585457fc8383e373ab923e46cd1f70bbfe46763f'/><select name='qt'>
<option value='grep'>log msg</option>
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</select>
<input class='txt' type='search' size='10' name='q' value=''/>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=585457fc8383e373ab923e46cd1f70bbfe46763f'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools?h=nds-private-remove&amp;id=585457fc8383e373ab923e46cd1f70bbfe46763f'>tools</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/usb?h=nds-private-remove&amp;id=585457fc8383e373ab923e46cd1f70bbfe46763f'>usb</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/usb/Makefile?h=nds-private-remove&amp;id=585457fc8383e373ab923e46cd1f70bbfe46763f'>Makefile</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='585457fc8383e373ab923e46cd1f70bbfe46763f'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-22 12:40:09 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-22 12:40:09 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/usb/Makefile?h=nds-private-remove&amp;id=585457fc8383e373ab923e46cd1f70bbfe46763f'>585457fc8383e373ab923e46cd1f70bbfe46763f</a> (<a href='/cgit.cgi/linux/net-next.git/patch/tools/usb/Makefile?id=585457fc8383e373ab923e46cd1f70bbfe46763f'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=585457fc8383e373ab923e46cd1f70bbfe46763f'>f4e38133fb9b90543150a904cc1f6cc6b5657c7b</a> /<a href='/cgit.cgi/linux/net-next.git/tree/tools/usb/Makefile?h=nds-private-remove&amp;id=585457fc8383e373ab923e46cd1f70bbfe46763f'>tools/usb/Makefile</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/usb/Makefile?h=nds-private-remove&amp;id=bb6c01c2dde67b165cf7c808b0f00677b6f94b96'>bb6c01c2dde67b165cf7c808b0f00677b6f94b96</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/usb/Makefile?h=nds-private-remove&amp;id=585457fc8383e373ab923e46cd1f70bbfe46763f&amp;id2=bb6c01c2dde67b165cf7c808b0f00677b6f94b96'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/usb/Makefile?h=nds-private-remove&amp;id=0db1dba5dfaf70fb3baf07973996db2078528cde'>0db1dba5dfaf70fb3baf07973996db2078528cde</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/usb/Makefile?h=nds-private-remove&amp;id=585457fc8383e373ab923e46cd1f70bbfe46763f&amp;id2=0db1dba5dfaf70fb3baf07973996db2078528cde'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost</div><div class='commit-msg'>Pull virtio/vhost fixes from Michael Tsirkin:
 "Random fixes and cleanups that accumulated over the time"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio/s390: virtio: constify virtio_config_ops structures
  virtio/s390: add missing \n to end of dev_err message
  virtio/s390: support READ_STATUS command for virtio-ccw
  tools/virtio/ringtest: tweaks for s390
  tools/virtio/ringtest: fix run-on-all.sh for offline cpus
  virtio_console: fix a crash in config_work_handler
  vhost/scsi: silence uninitialized variable warning
  vhost: scsi: constify target_core_fabric_ops structures
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=585457fc8383e373ab923e46cd1f70bbfe46763f'>Diffstat</a> (limited to 'tools/usb/Makefile')</div><table summary='diffstat' class='diffstat'>