/*
 * Copyright 2014, Michael Ellerman, IBM Corp.
 * Licensed under GPLv2.
 */

#define _GNU_SOURCE

#include <elf.h>
#include <limits.h>
#include <stdio.h>
#include <stdbool.h>
#include <string.h>
#include <sys/prctl.h>

#include "event.h"
#include "lib.h"
#include "utils.h"

/*
 * Test that per-event excludes work.
 */

static int per_event_excludes(void)
{
	struct event *e, events[4];
	char *platform;
	int i;

	platform = (char *)get_auxv_entry(AT_BASE_PLATFORM);
	FAIL_IF(!platform);
	SKIP_IF(strcmp(platform, "power8") != 0);

	/*
	 * We need to create the events disabled, otherwise the running/enabled
	 * counts don't match up.
	 */
	e = &events[0];
	event_init_opts(e, PERF_COUNT_HW_INSTRUCTIONS,
			PERF_TYPE_HARDWARE, "instructions");
	e->attr.disabled = 1;

	e = &events[1];
	event_init_opts(e, PERF_COUNT_HW_INSTRUCTIONS,
			PERF_TYPE_HARDWARE, "instructions(k)");
	e->attr.disabled = 1;
	e->attr.exclude_user = 1;
	e->attr.exclude_hv = 1;

	e = &events[2];
	event_init_opts(e, PERF_COUNT_HW_INSTRUCTIONS,
			PERF_TYPE_HARDWARE, "instructions(h)");
	e->attr.disabled = 1;
	e->attr.exclude_user = 1;
	e->attr.exclude_kernel = 1;

	e = &events[3];
	event_init_opts(e, PERF_COUNT_HW_INSTRUCTIONS,
			PERF_TYPE_HARDWARE, "instructions(u)");
	e->attr.disabled = 1;
	e->attr.exclude_hv = 1;
	e->attr.exclude_kernel = 1;

	FAIL_IF(event_open(&events[0]));

	/*
	 * The open here will fail if we don't have per event exclude support,
	 * because the second event has an incompatible set of exclude settings
	 * and we're asking for the events to be in a group.
	 */
	for (i = 1; i < 4; i++)
		FAIL_IF(event_open_with_group(&events[i], events[0].fd));

	/*
	 * Even though the above will fail without per-event excludes we keep
	 * testing in order to be thorough.
	 */
	prctl(PR_TASK_PERF_EVENTS_ENABLE);

	/* Spin for a while */
	for (i = 0; i < INT_MAX; i++)
		asm volatile("" : : : "memory");

	prctl(PR_TASK_PERF_EVENTS_DISABLE);

	for (i = 0; i < 4; i++) {
		FAIL_IF(event_read(&events[i]));
		event_report(&events[i]);
	}

	/*
	 * We should see that all events have enabled == running. That
	 * shows that they were all on the PMU at once.
	 */
	for (i = 0; i < 4; i++)
		FAIL_IF(events[i].result.running != events[i].result.enabled);

	/*
	 * We can also check that the result for instructions is >= all the
	 * other counts. That's because it is counting all instructions while
	 * the others are counting a subset.
	 */
	for (i = 1; i < 4; i++)
		FAIL_IF(events[0].result.value < events[i].result.value);

	for (i = 0; i < 4; i++)
		event_close(&events[i]);

	return 0;
}

int main(void)
{
	return test_harness(per_event_excludes, "per_event_excludes");
}
mitter'>committer</option>
<option value='range'>range</option>
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<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=0b529f143e8baad441a5aac9ad55ec2434d8fb46'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound?h=nds-private-remove&amp;id=0b529f143e8baad441a5aac9ad55ec2434d8fb46'>sound</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/usb?h=nds-private-remove&amp;id=0b529f143e8baad441a5aac9ad55ec2434d8fb46'>usb</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/usb/usx2y?h=nds-private-remove&amp;id=0b529f143e8baad441a5aac9ad55ec2434d8fb46'>usx2y</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/usb/usx2y/usbusx2y.c?h=nds-private-remove&amp;id=0b529f143e8baad441a5aac9ad55ec2434d8fb46'>usbusx2y.c</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='0b529f143e8baad441a5aac9ad55ec2434d8fb46'/><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>Harsh Jain &lt;harsh@chelsio.com&gt;</td><td class='right'>2017-02-01 21:10:28 +0530</td></tr>
<tr><th>committer</th><td>Herbert Xu &lt;herbert@gondor.apana.org.au&gt;</td><td class='right'>2017-02-03 17:45:48 +0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/usb/usx2y/usbusx2y.c?h=nds-private-remove&amp;id=0b529f143e8baad441a5aac9ad55ec2434d8fb46'>0b529f143e8baad441a5aac9ad55ec2434d8fb46</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/usb/usx2y/usbusx2y.c?id=0b529f143e8baad441a5aac9ad55ec2434d8fb46'>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=0b529f143e8baad441a5aac9ad55ec2434d8fb46'>fd816e548e12745d4776ad0bd661bec142d3ea06</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/usb/usx2y/usbusx2y.c?h=nds-private-remove&amp;id=0b529f143e8baad441a5aac9ad55ec2434d8fb46'>sound/usb/usx2y/usbusx2y.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/usb/usx2y/usbusx2y.c?h=nds-private-remove&amp;id=c26819900036f5b91608051a0fc7c76f6b4ffc7b'>c26819900036f5b91608051a0fc7c76f6b4ffc7b</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/usb/usx2y/usbusx2y.c?h=nds-private-remove&amp;id=0b529f143e8baad441a5aac9ad55ec2434d8fb46&amp;id2=c26819900036f5b91608051a0fc7c76f6b4ffc7b'>diff</a>)</td></tr></table>
<div class='commit-subject'>crypto: algif_aead - Fix kernel panic on list_del</div><div class='commit-msg'>Kernel panics when userspace program try to access AEAD interface.
Remove node from Linked List before freeing its memory.

Cc: &lt;stable@vger.kernel.org&gt;
Signed-off-by: Harsh Jain &lt;harsh@chelsio.com&gt;
Reviewed-by: Stephan Müller &lt;smueller@chronox.de&gt;
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=0b529f143e8baad441a5aac9ad55ec2434d8fb46'>Diffstat</a> (limited to 'sound/usb/usx2y/usbusx2y.c')</div><table summary='diffstat' class='diffstat'>