/*
 * Tests for prctl(PR_GET_TSC, ...) / prctl(PR_SET_TSC, ...)
 *
 * Basic test to test behaviour of PR_GET_TSC and PR_SET_TSC
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <inttypes.h>


#include <sys/prctl.h>
#include <linux/prctl.h>

/* Get/set the process' ability to use the timestamp counter instruction */
#ifndef PR_GET_TSC
#define PR_GET_TSC 25
#define PR_SET_TSC 26
# define PR_TSC_ENABLE		1   /* allow the use of the timestamp counter */
# define PR_TSC_SIGSEGV		2   /* throw a SIGSEGV instead of reading the TSC */
#endif

const char *tsc_names[] =
{
	[0] = "[not set]",
	[PR_TSC_ENABLE] = "PR_TSC_ENABLE",
	[PR_TSC_SIGSEGV] = "PR_TSC_SIGSEGV",
};

static uint64_t rdtsc(void)
{
uint32_t lo, hi;
/* We cannot use "=A", since this would use %rax on x86_64 */
__asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi));
return (uint64_t)hi << 32 | lo;
}

static void sigsegv_cb(int sig)
{
	int tsc_val = 0;

	printf("[ SIG_SEGV ]\n");
	printf("prctl(PR_GET_TSC, &tsc_val); ");
	fflush(stdout);

	if ( prctl(PR_GET_TSC, &tsc_val) == -1)
		perror("prctl");

	printf("tsc_val == %s\n", tsc_names[tsc_val]);
	printf("prctl(PR_SET_TSC, PR_TSC_ENABLE)\n");
	fflush(stdout);
	if ( prctl(PR_SET_TSC, PR_TSC_ENABLE) == -1)
		perror("prctl");

	printf("rdtsc() == ");
}

int main(void)
{
	int tsc_val = 0;

	signal(SIGSEGV, sigsegv_cb);

	printf("rdtsc() == %llu\n", (unsigned long long)rdtsc());
	printf("prctl(PR_GET_TSC, &tsc_val); ");
	fflush(stdout);

	if ( prctl(PR_GET_TSC, &tsc_val) == -1)
		perror("prctl");

	printf("tsc_val == %s\n", tsc_names[tsc_val]);
	printf("rdtsc() == %llu\n", (unsigned long long)rdtsc());
	printf("prctl(PR_SET_TSC, PR_TSC_ENABLE)\n");
	fflush(stdout);

	if ( prctl(PR_SET_TSC, PR_TSC_ENABLE) == -1)
		perror("prctl");

	printf("rdtsc() == %llu\n", (unsigned long long)rdtsc());
	printf("prctl(PR_SET_TSC, PR_TSC_SIGSEGV)\n");
	fflush(stdout);

	if ( prctl(PR_SET_TSC, PR_TSC_SIGSEGV) == -1)
		perror("prctl");

	printf("rdtsc() == ");
	fflush(stdout);
	printf("%llu\n", (unsigned long long)rdtsc());
	fflush(stdout);

	exit(EXIT_SUCCESS);
}

od='get' action='/cgit.cgi/linux/net-next.git/log/include/crypto/sha3.h'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=628f07d33c1f2e7bf31e0a4a988bb07914bd5e73'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include?id=628f07d33c1f2e7bf31e0a4a988bb07914bd5e73'>include</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/crypto?id=628f07d33c1f2e7bf31e0a4a988bb07914bd5e73'>crypto</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/crypto/sha3.h?id=628f07d33c1f2e7bf31e0a4a988bb07914bd5e73'>sha3.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='628f07d33c1f2e7bf31e0a4a988bb07914bd5e73'/><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>Eyal Itkin &lt;eyal.itkin@gmail.com&gt;</td><td class='right'>2017-02-07 16:43:05 +0300</td></tr>
<tr><th>committer</th><td>Doug Ledford &lt;dledford@redhat.com&gt;</td><td class='right'>2017-02-08 12:28:30 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/crypto/sha3.h?id=628f07d33c1f2e7bf31e0a4a988bb07914bd5e73'>628f07d33c1f2e7bf31e0a4a988bb07914bd5e73</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/crypto/sha3.h?id=628f07d33c1f2e7bf31e0a4a988bb07914bd5e73'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=628f07d33c1f2e7bf31e0a4a988bb07914bd5e73'>c228c66498f9a4562093fbbf80a41bcede0c06f2</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/crypto/sha3.h?id=628f07d33c1f2e7bf31e0a4a988bb07914bd5e73'>include/crypto/sha3.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/crypto/sha3.h?id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934'>b4cfe3971f6eab542dd7ecc398bfa1aeec889934</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/crypto/sha3.h?id=628f07d33c1f2e7bf31e0a4a988bb07914bd5e73&amp;id2=b4cfe3971f6eab542dd7ecc398bfa1aeec889934'>diff</a>)</td></tr></table>
<div class='commit-subject'>IB/rxe: Fix resid update</div><div class='commit-msg'>Update the response's resid field when larger than MTU, instead of only
updating the local resid variable.

Fixes: 8700e3e7c485 ("Soft RoCE driver")
Signed-off-by: Eyal Itkin &lt;eyal.itkin@gmail.com&gt;
Signed-off-by: Dan Carpenter &lt;dan.carpenter@oracle.com&gt;
Reviewed-by: Leon Romanovsky &lt;leonro@mellanox.com&gt;
Signed-off-by: Doug Ledford &lt;dledford@redhat.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=628f07d33c1f2e7bf31e0a4a988bb07914bd5e73'>Diffstat</a> (limited to 'include/crypto/sha3.h')</div><table summary='diffstat' class='diffstat'>