#define _GNU_SOURCE
#include <linux/membarrier.h>
#include <syscall.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>

#include "../kselftest.h"

enum test_membarrier_status {
	TEST_MEMBARRIER_PASS = 0,
	TEST_MEMBARRIER_FAIL,
	TEST_MEMBARRIER_SKIP,
};

static int sys_membarrier(int cmd, int flags)
{
	return syscall(__NR_membarrier, cmd, flags);
}

static enum test_membarrier_status test_membarrier_cmd_fail(void)
{
	int cmd = -1, flags = 0;

	if (sys_membarrier(cmd, flags) != -1) {
		printf("membarrier: Wrong command should fail but passed.\n");
		return TEST_MEMBARRIER_FAIL;
	}
	return TEST_MEMBARRIER_PASS;
}

static enum test_membarrier_status test_membarrier_flags_fail(void)
{
	int cmd = MEMBARRIER_CMD_QUERY, flags = 1;

	if (sys_membarrier(cmd, flags) != -1) {
		printf("membarrier: Wrong flags should fail but passed.\n");
		return TEST_MEMBARRIER_FAIL;
	}
	return TEST_MEMBARRIER_PASS;
}

static enum test_membarrier_status test_membarrier_success(void)
{
	int cmd = MEMBARRIER_CMD_SHARED, flags = 0;

	if (sys_membarrier(cmd, flags) != 0) {
		printf("membarrier: Executing MEMBARRIER_CMD_SHARED failed. %s.\n",
				strerror(errno));
		return TEST_MEMBARRIER_FAIL;
	}

	printf("membarrier: MEMBARRIER_CMD_SHARED success.\n");
	return TEST_MEMBARRIER_PASS;
}

static enum test_membarrier_status test_membarrier(void)
{
	enum test_membarrier_status status;

	status = test_membarrier_cmd_fail();
	if (status)
		return status;
	status = test_membarrier_flags_fail();
	if (status)
		return status;
	status = test_membarrier_success();
	if (status)
		return status;
	return TEST_MEMBARRIER_PASS;
}

static enum test_membarrier_status test_membarrier_query(void)
{
	int flags = 0, ret;

	printf("membarrier MEMBARRIER_CMD_QUERY ");
	ret = sys_membarrier(MEMBARRIER_CMD_QUERY, flags);
	if (ret < 0) {
		printf("failed. %s.\n", strerror(errno));
		switch (errno) {
		case ENOSYS:
			/*
			 * It is valid to build a kernel with
			 * CONFIG_MEMBARRIER=n. However, this skips the tests.
			 */
			return TEST_MEMBARRIER_SKIP;
		case EINVAL:
		default:
			return TEST_MEMBARRIER_FAIL;
		}
	}
	if (!(ret & MEMBARRIER_CMD_SHARED)) {
		printf("command MEMBARRIER_CMD_SHARED is not supported.\n");
		return TEST_MEMBARRIER_FAIL;
	}
	printf("syscall available.\n");
	return TEST_MEMBARRIER_PASS;
}

int main(int argc, char **argv)
{
	switch (test_membarrier_query()) {
	case TEST_MEMBARRIER_FAIL:
		return ksft_exit_fail();
	case TEST_MEMBARRIER_SKIP:
		return ksft_exit_skip();
	}
	switch (test_membarrier()) {
	case TEST_MEMBARRIER_FAIL:
		return ksft_exit_fail();
	case TEST_MEMBARRIER_SKIP:
		return ksft_exit_skip();
	}

	printf("membarrier: tests done!\n");
	return ksft_exit_pass();
}
'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=fc6f41ba8b2e705f91324db158c3cc28209a15b1'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers?id=fc6f41ba8b2e705f91324db158c3cc28209a15b1'>drivers</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb?id=fc6f41ba8b2e705f91324db158c3cc28209a15b1'>usb</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/renesas_usbhs?id=fc6f41ba8b2e705f91324db158c3cc28209a15b1'>renesas_usbhs</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/renesas_usbhs/rcar2.h?id=fc6f41ba8b2e705f91324db158c3cc28209a15b1'>rcar2.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='fc6f41ba8b2e705f91324db158c3cc28209a15b1'/><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'>2017-02-10 14:35:22 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-02-10 14:35:22 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/renesas_usbhs/rcar2.h?id=fc6f41ba8b2e705f91324db158c3cc28209a15b1'>fc6f41ba8b2e705f91324db158c3cc28209a15b1</a> (<a href='/cgit.cgi/linux/net-next.git/patch/drivers/usb/renesas_usbhs/rcar2.h?id=fc6f41ba8b2e705f91324db158c3cc28209a15b1'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=fc6f41ba8b2e705f91324db158c3cc28209a15b1'>567bede1cc6bd9f2dec3a3dc85e908e02557da2e</a> /<a href='/cgit.cgi/linux/net-next.git/tree/drivers/usb/renesas_usbhs/rcar2.h?id=fc6f41ba8b2e705f91324db158c3cc28209a15b1'>drivers/usb/renesas_usbhs/rcar2.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/renesas_usbhs/rcar2.h?id=1f369d1655c1de415a186c6ce9004e40ca790989'>1f369d1655c1de415a186c6ce9004e40ca790989</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/renesas_usbhs/rcar2.h?id=fc6f41ba8b2e705f91324db158c3cc28209a15b1&amp;id2=1f369d1655c1de415a186c6ce9004e40ca790989'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/renesas_usbhs/rcar2.h?id=5cad24d835772f9f709971a8d6fcf12afe53b2a7'>5cad24d835772f9f709971a8d6fcf12afe53b2a7</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/renesas_usbhs/rcar2.h?id=fc6f41ba8b2e705f91324db158c3cc28209a15b1&amp;id2=5cad24d835772f9f709971a8d6fcf12afe53b2a7'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'mmc-v4.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc</div><div class='commit-msg'>Pull MMC host fix from Ulf Hansson:
 "mmci: Fix hang while waiting for busy-end interrupt"

* tag 'mmc-v4.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: mmci: avoid clearing ST Micro busy end interrupt mistakenly
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=fc6f41ba8b2e705f91324db158c3cc28209a15b1'>Diffstat</a> (limited to 'drivers/usb/renesas_usbhs/rcar2.h')</div><table summary='diffstat' class='diffstat'>