/*
 *  sync stress test: merging
 *  Copyright 2015-2016 Collabora Ltd.
 *
 *  Based on the implementation from the Android Open Source Project,
 *
 *  Copyright 2012 Google, Inc
 *
 *  Permission is hereby granted, free of charge, to any person obtaining a
 *  copy of this software and associated documentation files (the "Software"),
 *  to deal in the Software without restriction, including without limitation
 *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
 *  and/or sell copies of the Software, and to permit persons to whom the
 *  Software is furnished to do so, subject to the following conditions:
 *
 *  The above copyright notice and this permission notice shall be included in
 *  all copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 *  OTHER DEALINGS IN THE SOFTWARE.
 */

#include <stdlib.h>
#include <string.h>
#include <time.h>

#include "sync.h"
#include "sw_sync.h"
#include "synctest.h"

int test_merge_stress_random_merge(void)
{
	int i, size, ret;
	int timeline_count = 32;
	int merge_count = 1024 * 32;
	int timelines[timeline_count];
	int fence_map[timeline_count];
	int fence, tmpfence, merged, valid;
	int timeline, timeline_offset, sync_point;

	srand(time(NULL));

	for (i = 0; i < timeline_count; i++)
		timelines[i] = sw_sync_timeline_create();

	fence = sw_sync_fence_create(timelines[0], "fence", 0);
	valid = sw_sync_fence_is_valid(fence);
	ASSERT(valid, "Failure creating fence\n");

	memset(fence_map, -1, sizeof(fence_map));
	fence_map[0] = 0;

	/*
	 * Randomly create sync_points out of a fixed set of timelines,
	 * and merge them together
	 */
	for (i = 0; i < merge_count; i++) {
		/* Generate sync_point. */
		timeline_offset = rand() % timeline_count;
		timeline = timelines[timeline_offset];
		sync_point = rand();

		/* Keep track of the latest sync_point in each timeline. */
		if (fence_map[timeline_offset] == -1)
			fence_map[timeline_offset] = sync_point;
		else if (fence_map[timeline_offset] < sync_point)
			fence_map[timeline_offset] = sync_point;

		/* Merge */
		tmpfence = sw_sync_fence_create(timeline, "fence", sync_point);
		merged = sync_merge("merge", tmpfence, fence);
		sw_sync_fence_destroy(tmpfence);
		sw_sync_fence_destroy(fence);
		fence = merged;

		valid = sw_sync_fence_is_valid(merged);
		ASSERT(valid, "Failure creating fence i\n");
	}

	size = 0;
	for (i = 0; i < timeline_count; i++)
		if (fence_map[i] != -1)
			size++;

	/* Confirm our map matches the fence. */
	ASSERT(sync_fence_size(fence) == size,
	       "Quantity of elements not matching\n");

	/* Trigger the merged fence */
	for (i = 0; i < timeline_count; i++) {
		if (fence_map[i] != -1) {
			ret = sync_wait(fence, 0);
			ASSERT(ret == 0,
			       "Failure waiting on fence until timeout\n");
			/* Increment the timeline to the last sync_point */
			sw_sync_timeline_inc(timelines[i], fence_map[i]);
		}
	}

	/* Check that the fence is triggered. */
	ret = sync_wait(fence, 0);
	ASSERT(ret > 0, "Failure triggering fence\n");

	sw_sync_fence_destroy(fence);

	for (i = 0; i < timeline_count; i++)
		sw_sync_timeline_destroy(timelines[i]);

	return 0;
}
b9'>configs</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests/rcutorture/configs/lock?id=970d14e3989160ee9e97c7d75ecbc893fd29dab9'>lock</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests/rcutorture/configs/lock/LOCK01?id=970d14e3989160ee9e97c7d75ecbc893fd29dab9'>LOCK01</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='970d14e3989160ee9e97c7d75ecbc893fd29dab9'/><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>Bhumika Goyal &lt;bhumirks@gmail.com&gt;</td><td class='right'>2017-01-25 00:54:07 +0530</td></tr>
<tr><th>committer</th><td>Dan Williams &lt;dan.j.williams@intel.com&gt;</td><td class='right'>2017-01-31 18:16:30 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests/rcutorture/configs/lock/LOCK01?id=970d14e3989160ee9e97c7d75ecbc893fd29dab9'>970d14e3989160ee9e97c7d75ecbc893fd29dab9</a> (<a href='/cgit.cgi/linux/net-next.git/patch/tools/testing/selftests/rcutorture/configs/lock/LOCK01?id=970d14e3989160ee9e97c7d75ecbc893fd29dab9'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=970d14e3989160ee9e97c7d75ecbc893fd29dab9'>4a731cac4efedb17f86a912ec56c151d26792abe</a> /<a href='/cgit.cgi/linux/net-next.git/tree/tools/testing/selftests/rcutorture/configs/lock/LOCK01?id=970d14e3989160ee9e97c7d75ecbc893fd29dab9'>tools/testing/selftests/rcutorture/configs/lock/LOCK01</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests/rcutorture/configs/lock/LOCK01?id=7a308bb3016f57e5be11a677d15b821536419d36'>7a308bb3016f57e5be11a677d15b821536419d36</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/testing/selftests/rcutorture/configs/lock/LOCK01?id=970d14e3989160ee9e97c7d75ecbc893fd29dab9&amp;id2=7a308bb3016f57e5be11a677d15b821536419d36'>diff</a>)</td></tr></table>
<div class='commit-subject'>nvdimm: constify device_type structures</div><div class='commit-msg'>Declare device_type structure as const as it is only stored in the
type field of a device structure. This field is of type const, so add
const to declaration of device_type structure.

File size before:
  text	   data	    bss	    dec	    hex	filename
  19278	   3199	     16	  22493	   57dd	nvdimm/namespace_devs.o

File size after:
  text	   data	    bss	    dec	    hex	filename
  19929	   3160	     16	  23105	   5a41	nvdimm/namespace_devs.o

Signed-off-by: Bhumika Goyal &lt;bhumirks@gmail.com&gt;
Signed-off-by: Dan Williams &lt;dan.j.williams@intel.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=970d14e3989160ee9e97c7d75ecbc893fd29dab9'>Diffstat</a> (limited to 'tools/testing/selftests/rcutorture/configs/lock/LOCK01')</div><table summary='diffstat' class='diffstat'>