/* Test context switching to see if the DSCR SPR is correctly preserved
* when within a transaction.
*
* Note: We assume that the DSCR has been left at the default value (0)
* for all CPUs.
*
* Method:
*
* Set a value into the DSCR.
*
* Start a transaction, and suspend it (*).
*
* Hard loop checking to see if the transaction has become doomed.
*
* Now that we *may* have been preempted, record the DSCR and TEXASR SPRS.
*
* If the abort was because of a context switch, check the DSCR value.
* Otherwise, try again.
*
* (*) If the transaction is not suspended we can't see the problem because
* the transaction abort handler will restore the DSCR to it's checkpointed
* value before we regain control.
*/
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <asm/tm.h>
#include "utils.h"
#include "tm.h"
#define SPRN_DSCR 0x03
int test_body(void)
{
uint64_t rv, dscr1 = 1, dscr2, texasr;
SKIP_IF(!have_htm());
printf("Check DSCR TM context switch: ");
fflush(stdout);
for (;;) {
rv = 1;
asm __volatile__ (
/* set a known value into the DSCR */
"ld 3, %[dscr1];"
"mtspr %[sprn_dscr], 3;"
/* start and suspend a transaction */
"tbegin.;"
"beq 1f;"
"tsuspend.;"
/* hard loop until the transaction becomes doomed */
"2: ;"
"tcheck 0;"
"bc 4, 0, 2b;"
/* record DSCR and TEXASR */
"mfspr 3, %[sprn_dscr];"
"std 3, %[dscr2];"
"mfspr 3, %[sprn_texasr];"
"std 3, %[texasr];"
"tresume.;"
"tend.;"
"li %[rv], 0;"
"1: ;"
: [rv]"=r"(rv), [dscr2]"=m"(dscr2), [texasr]"=m"(texasr)
: [dscr1]"m"(dscr1)
, [sprn_dscr]"i"(SPRN_DSCR), [sprn_texasr]"i"(SPRN_TEXASR)
: "memory", "r3"
);
assert(rv); /* make sure the transaction aborted */
if ((texasr >> 56) != TM_CAUSE_RESCHED) {
putchar('.');
fflush(stdout);
continue;
}
if (dscr2 != dscr1) {
printf(" FAIL\n");
return 1;
} else {
printf(" OK\n");
return 0;
}
}
}
int main(void)
{
return test_harness(test_body, "tm_resched_dscr");
}
/linux/net-next.git/log/net/ipv6'>
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<option value='grep'>log msg</option>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=94b5e0f970258828bf163b5ef076da4e4b0802e0'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?id=94b5e0f970258828bf163b5ef076da4e4b0802e0'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/ipv6?id=94b5e0f970258828bf163b5ef076da4e4b0802e0'>ipv6</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='94b5e0f970258828bf163b5ef076da4e4b0802e0'/><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>David Ahern <dsa@cumulusnetworks.com></td><td class='right'>2017-02-02 08:52:21 -0800</td></tr>
<tr><th>committer</th><td>David S. Miller <davem@davemloft.net></td><td class='right'>2017-02-03 16:01:44 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/ipv6?id=94b5e0f970258828bf163b5ef076da4e4b0802e0'>94b5e0f970258828bf163b5ef076da4e4b0802e0</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/ipv6?id=94b5e0f970258828bf163b5ef076da4e4b0802e0'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=94b5e0f970258828bf163b5ef076da4e4b0802e0'>b0fcd7892b00ecdccdc4328a632d98e74d6f265f</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/ipv6?id=94b5e0f970258828bf163b5ef076da4e4b0802e0'>net/ipv6</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/ipv6?id=3898fac1f488c76e0eef5b5267b4ba8112a82ac4'>3898fac1f488c76e0eef5b5267b4ba8112a82ac4</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/ipv6?id=94b5e0f970258828bf163b5ef076da4e4b0802e0&id2=3898fac1f488c76e0eef5b5267b4ba8112a82ac4'>diff</a>)</td></tr></table>
<div class='commit-subject'>net: ipv6: Set protocol to kernel for local routes</div><div class='commit-msg'>IPv6 stack does not set the protocol for local routes, so those routes show
up with proto "none":
$ ip -6 ro ls table local
local ::1 dev lo proto none metric 0 pref medium
local 2100:3:: dev lo proto none metric 0 pref medium
local 2100:3::4 dev lo proto none metric 0 pref medium
local fe80:: dev lo proto none metric 0 pref medium
...
Set rt6i_protocol to RTPROT_KERNEL for consistency with IPv4. Now routes
show up with proto "kernel":
$ ip -6 ro ls table local
local ::1 dev lo proto kernel metric 0 pref medium
local 2100:3:: dev lo proto kernel metric 0 pref medium
local 2100:3::4 dev lo proto kernel metric 0 pref medium
local fe80:: dev lo proto kernel metric 0 pref medium
...
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=94b5e0f970258828bf163b5ef076da4e4b0802e0'>Diffstat</a> (limited to 'net/ipv6')</div><table summary='diffstat' class='diffstat'><tr><td class='mode'>-rw-r--r--</td><td class='upd'><a href='/cgit.cgi/linux/net-next.git/diff/net/ipv6/route.c?id=94b5e0f970258828bf163b5ef076da4e4b0802e0'>net/ipv6/route.c</a></td><td class='right'>1</td><td class='graph'><table summary='file diffstat' width='1%'><tr><td class='add' style='width: 100.0%;'/><td class='rem' style='width: 0.0%;'/><td class='none' style='width: 0.0%;'/></tr></table></td></tr>
</table><div class='diffstat-summary'>1 files changed, 1 insertions, 0 deletions</div><table summary='diff' class='diff'><tr><td><div class='head'>diff --git a/net/ipv6/route.c b/net/ipv6/route.c