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Dtrace: enablings on defunct providers prevent providers from unregistering
Merge change from illumos: 1368 enablings on defunct providers prevent providers from unregistering We try to address some underlying differences between the Solaris and FreeBSD implementations: dtrace_attach() / dtrace_detach() are currently unimplemented in FreeBSD but the new code from illumos makes use of taskq so some adaptations were made to dtrace_open() and dtrace_close() to handle them appropriately. Illumos Revision: r13430:8e6add739e38 Reference: https://www.illumos.org/issues/1368 Reviewed by: gnn Tested by: Fabian Keil Obtained from: Illumos MFC after: 3 weeks
This commit is contained in:
Pedro F. Giffuni
commit
9f4c7ba460
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=248983
@ -23,7 +23,6 @@
|
||||
# Copyright 2008 Sun Microsystems, Inc. All rights reserved.
|
||||
# Use is subject to license terms.
|
||||
#
|
||||
# ident "%Z%%M% %I% %E% SMI"
|
||||
|
||||
# Exception list: names tests that are bypassed when running in Java
|
||||
# mode (relative to /opt/SUNWdtrt/tst)
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||||
@ -52,14 +51,17 @@ common/usdt/tst.enabled.ksh
|
||||
common/usdt/tst.enabled2.ksh
|
||||
common/usdt/tst.entryreturn.ksh
|
||||
common/usdt/tst.fork.ksh
|
||||
common/usdt/tst.header.ksh
|
||||
common/usdt/tst.guess32.ksh
|
||||
common/usdt/tst.guess64.ksh
|
||||
common/usdt/tst.header.ksh
|
||||
common/usdt/tst.linkpriv.ksh
|
||||
common/usdt/tst.linkunpriv.ksh
|
||||
common/usdt/tst.multiple.ksh
|
||||
common/usdt/tst.nodtrace.ksh
|
||||
common/usdt/tst.noreap.ksh
|
||||
common/usdt/tst.noreapring.ksh
|
||||
common/usdt/tst.onlyenabled.ksh
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||||
common/usdt/tst.reap.ksh
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||||
common/usdt/tst.reeval.ksh
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||||
common/usdt/tst.static.ksh
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||||
common/usdt/tst.static2.ksh
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||||
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||||
@ -0,0 +1,128 @@
|
||||
#
|
||||
# CDDL HEADER START
|
||||
#
|
||||
# The contents of this file are subject to the terms of the
|
||||
# Common Development and Distribution License (the "License").
|
||||
# You may not use this file except in compliance with the License.
|
||||
#
|
||||
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
||||
# or http://www.opensolaris.org/os/licensing.
|
||||
# See the License for the specific language governing permissions
|
||||
# and limitations under the License.
|
||||
#
|
||||
# When distributing Covered Code, include this CDDL HEADER in each
|
||||
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
||||
# If applicable, add the following below this CDDL HEADER, with the
|
||||
# fields enclosed by brackets "[]" replaced with your own identifying
|
||||
# information: Portions Copyright [yyyy] [name of copyright owner]
|
||||
#
|
||||
# CDDL HEADER END
|
||||
#
|
||||
|
||||
#
|
||||
# Copyright (c) 2011, Joyent, Inc. All rights reserved.
|
||||
#
|
||||
|
||||
if [ $# != 1 ]; then
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||||
echo expected one argument: '<'dtrace-path'>'
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exit 2
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fi
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||||
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dtrace=$1
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DIR=/var/tmp/dtest.$$
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mkdir $DIR
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cd $DIR
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cat > test.c <<EOF
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#include <unistd.h>
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#include <sys/sdt.h>
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int
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main(int argc, char **argv)
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||||
{
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DTRACE_PROBE(test_prov, probe1);
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}
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EOF
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cat > prov.d <<EOF
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provider test_prov {
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probe probe1();
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};
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EOF
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gcc -c test.c
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if [ $? -ne 0 ]; then
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print -u2 "failed to compile test.c"
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exit 1
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fi
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$dtrace -G -32 -s prov.d test.o
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if [ $? -ne 0 ]; then
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print -u2 "failed to create DOF"
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exit 1
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||||
fi
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gcc -o test test.o prov.o
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||||
if [ $? -ne 0 ]; then
|
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print -u2 "failed to link final executable"
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exit 1
|
||||
fi
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||||
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||||
script()
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||||
{
|
||||
$dtrace -Zwqs /dev/stdin <<EOF
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||||
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BEGIN
|
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{
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||||
spec = speculation();
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speculate(spec);
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||||
printf("this is speculative!\n");
|
||||
}
|
||||
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||||
test_prov*:::
|
||||
{
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||||
probeid = id;
|
||||
}
|
||||
|
||||
tick-1sec
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||||
/probeid == 0/
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||||
{
|
||||
printf("launching test\n");
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||||
system("./test");
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||||
}
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||||
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tick-1sec
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/probeid != 0/
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||||
{
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printf("attempting re-enabling\n");
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system("dtrace -e -x errtags -i %d", probeid);
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||||
attempts++;
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}
|
||||
|
||||
tick-1sec
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||||
/attempts > 10/
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||||
{
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||||
exit(0);
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||||
}
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||||
EOF
|
||||
}
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||||
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script 2>&1 | tee test.out
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#
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# It should be true that our probe was not reaped after the provider was made
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# defunct: the speculative tracing action prevents reaping of any ECB in the
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# enabling.
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#
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||||
status=0
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||||
|
||||
if grep D_PDESC_INVAL test.out 2> /dev/null 1>&2 ; then
|
||||
status=1
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||||
else
|
||||
grep D_PROC_GRAB test.out 2> /dev/null 1>&2
|
||||
status=$?
|
||||
fi
|
||||
|
||||
cd /
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/usr/bin/rm -rf $DIR
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||||
|
||||
exit $status
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@ -0,0 +1,124 @@
|
||||
#
|
||||
# CDDL HEADER START
|
||||
#
|
||||
# The contents of this file are subject to the terms of the
|
||||
# Common Development and Distribution License (the "License").
|
||||
# You may not use this file except in compliance with the License.
|
||||
#
|
||||
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
||||
# or http://www.opensolaris.org/os/licensing.
|
||||
# See the License for the specific language governing permissions
|
||||
# and limitations under the License.
|
||||
#
|
||||
# When distributing Covered Code, include this CDDL HEADER in each
|
||||
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
||||
# If applicable, add the following below this CDDL HEADER, with the
|
||||
# fields enclosed by brackets "[]" replaced with your own identifying
|
||||
# information: Portions Copyright [yyyy] [name of copyright owner]
|
||||
#
|
||||
# CDDL HEADER END
|
||||
#
|
||||
|
||||
#
|
||||
# Copyright (c) 2011, Joyent, Inc. All rights reserved.
|
||||
#
|
||||
|
||||
if [ $# != 1 ]; then
|
||||
echo expected one argument: '<'dtrace-path'>'
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||||
exit 2
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fi
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dtrace=$1
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DIR=/var/tmp/dtest.$$
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mkdir $DIR
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cd $DIR
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cat > test.c <<EOF
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#include <unistd.h>
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#include <sys/sdt.h>
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int
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||||
main(int argc, char **argv)
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||||
{
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DTRACE_PROBE(test_prov, probe1);
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}
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EOF
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cat > prov.d <<EOF
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provider test_prov {
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probe probe1();
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};
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EOF
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gcc -c test.c
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if [ $? -ne 0 ]; then
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||||
print -u2 "failed to compile test.c"
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exit 1
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||||
fi
|
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$dtrace -G -32 -s prov.d test.o
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||||
if [ $? -ne 0 ]; then
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print -u2 "failed to create DOF"
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||||
exit 1
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||||
fi
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||||
gcc -o test test.o prov.o
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||||
if [ $? -ne 0 ]; then
|
||||
print -u2 "failed to link final executable"
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||||
exit 1
|
||||
fi
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||||
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||||
script()
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||||
{
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$dtrace -Zwqs /dev/stdin <<EOF
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test_prov*:::
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{
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probeid = id;
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}
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tick-1sec
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/probeid == 0/
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{
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printf("launching test\n");
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system("./test");
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}
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tick-1sec
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/probeid != 0/
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{
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printf("attempting re-enabling\n");
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system("dtrace -e -x errtags -i %d", probeid);
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attempts++;
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}
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tick-1sec
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/attempts > 10/
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{
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exit(0);
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}
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EOF
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}
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$dtrace -x bufpolicy=ring -ZwqP test_prov\* > /dev/null 2>&1 &
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background=$!
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echo launched ring buffered enabling as pid $background
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script 2>&1 | tee test.out
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#
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# It should be true that our probe was not reaped after the provider was made
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# defunct: the active ring buffer in the earlier enabling prevents reaping of
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# any of the earlier enabling's ECBs.
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#
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status=0
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if grep D_PDESC_INVAL test.out 2> /dev/null 1>&2 ; then
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status=1
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else
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grep D_PROC_GRAB test.out 2> /dev/null 1>&2
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status=$?
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fi
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kill $background
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cd /
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/usr/bin/rm -rf $DIR
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exit $status
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@ -0,0 +1,115 @@
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#
|
||||
# CDDL HEADER START
|
||||
#
|
||||
# The contents of this file are subject to the terms of the
|
||||
# Common Development and Distribution License (the "License").
|
||||
# You may not use this file except in compliance with the License.
|
||||
#
|
||||
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
||||
# or http://www.opensolaris.org/os/licensing.
|
||||
# See the License for the specific language governing permissions
|
||||
# and limitations under the License.
|
||||
#
|
||||
# When distributing Covered Code, include this CDDL HEADER in each
|
||||
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
||||
# If applicable, add the following below this CDDL HEADER, with the
|
||||
# fields enclosed by brackets "[]" replaced with your own identifying
|
||||
# information: Portions Copyright [yyyy] [name of copyright owner]
|
||||
#
|
||||
# CDDL HEADER END
|
||||
#
|
||||
|
||||
#
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# Copyright (c) 2011, Joyent, Inc. All rights reserved.
|
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#
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|
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if [ $# != 1 ]; then
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echo expected one argument: '<'dtrace-path'>'
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exit 2
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fi
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dtrace=$1
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DIR=/var/tmp/dtest.$$
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mkdir $DIR
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cd $DIR
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cat > test.c <<EOF
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#include <unistd.h>
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#include <sys/sdt.h>
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int
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main(int argc, char **argv)
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||||
{
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DTRACE_PROBE(test_prov, probe1);
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}
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EOF
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cat > prov.d <<EOF
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provider test_prov {
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probe probe1();
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};
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EOF
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gcc -c test.c
|
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if [ $? -ne 0 ]; then
|
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print -u2 "failed to compile test.c"
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exit 1
|
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fi
|
||||
$dtrace -G -32 -s prov.d test.o
|
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if [ $? -ne 0 ]; then
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print -u2 "failed to create DOF"
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||||
exit 1
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fi
|
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gcc -o test test.o prov.o
|
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if [ $? -ne 0 ]; then
|
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print -u2 "failed to link final executable"
|
||||
exit 1
|
||||
fi
|
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|
||||
script()
|
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{
|
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$dtrace -Zwqs /dev/stdin <<EOF
|
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test_prov*:::
|
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{
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probeid = id;
|
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}
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|
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tick-1sec
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/probeid == 0/
|
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{
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printf("launching test\n");
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system("./test");
|
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}
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|
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tick-1sec
|
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/probeid != 0/
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{
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printf("attempting re-enabling\n");
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system("dtrace -e -x errtags -i %d", probeid);
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attempts++;
|
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}
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|
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tick-1sec
|
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/attempts > 10/
|
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{
|
||||
exit(0);
|
||||
}
|
||||
EOF
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||||
}
|
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|
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script 2>&1 | tee test.out
|
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|
||||
#
|
||||
# It should be true that our probe was reaped over the course of the enabling,
|
||||
# causing the embedded DTrace invocation to fail on an invalid probe (that is,
|
||||
# D_PDESC_INVAL) instead of an inability to grab the underlying process
|
||||
# (D_PROC_GRAB).
|
||||
#
|
||||
grep D_PDESC_INVAL test.out 2> /dev/null 1>&2
|
||||
status=$?
|
||||
|
||||
cd /
|
||||
/usr/bin/rm -rf $DIR
|
||||
|
||||
exit $status
|
||||
@ -182,6 +182,7 @@ int dtrace_err_verbose;
|
||||
hrtime_t dtrace_deadman_interval = NANOSEC;
|
||||
hrtime_t dtrace_deadman_timeout = (hrtime_t)10 * NANOSEC;
|
||||
hrtime_t dtrace_deadman_user = (hrtime_t)30 * NANOSEC;
|
||||
hrtime_t dtrace_unregister_defunct_reap = (hrtime_t)60 * NANOSEC;
|
||||
|
||||
/*
|
||||
* DTrace External Variables
|
||||
@ -203,8 +204,8 @@ static dev_info_t *dtrace_devi; /* device info */
|
||||
#if defined(sun)
|
||||
static vmem_t *dtrace_arena; /* probe ID arena */
|
||||
static vmem_t *dtrace_minor; /* minor number arena */
|
||||
static taskq_t *dtrace_taskq; /* task queue */
|
||||
#else
|
||||
static taskq_t *dtrace_taskq; /* task queue */
|
||||
static struct unrhdr *dtrace_arena; /* Probe ID number. */
|
||||
#endif
|
||||
static dtrace_probe_t **dtrace_probes; /* array of all probes */
|
||||
@ -550,11 +551,13 @@ static dtrace_probe_t *dtrace_probe_lookup_id(dtrace_id_t id);
|
||||
static void dtrace_enabling_provide(dtrace_provider_t *);
|
||||
static int dtrace_enabling_match(dtrace_enabling_t *, int *);
|
||||
static void dtrace_enabling_matchall(void);
|
||||
static void dtrace_enabling_reap(void);
|
||||
static dtrace_state_t *dtrace_anon_grab(void);
|
||||
static uint64_t dtrace_helper(int, dtrace_mstate_t *,
|
||||
dtrace_state_t *, uint64_t, uint64_t);
|
||||
static dtrace_helpers_t *dtrace_helpers_create(proc_t *);
|
||||
static void dtrace_buffer_drop(dtrace_buffer_t *);
|
||||
static int dtrace_buffer_consumed(dtrace_buffer_t *, hrtime_t when);
|
||||
static intptr_t dtrace_buffer_reserve(dtrace_buffer_t *, size_t, size_t,
|
||||
dtrace_state_t *, dtrace_mstate_t *);
|
||||
static int dtrace_state_option(dtrace_state_t *, dtrace_optid_t,
|
||||
@ -7593,7 +7596,7 @@ dtrace_unregister(dtrace_provider_id_t id)
|
||||
{
|
||||
dtrace_provider_t *old = (dtrace_provider_t *)id;
|
||||
dtrace_provider_t *prev = NULL;
|
||||
int i, self = 0;
|
||||
int i, self = 0, noreap = 0;
|
||||
dtrace_probe_t *probe, *first = NULL;
|
||||
|
||||
if (old->dtpv_pops.dtps_enable ==
|
||||
@ -7652,14 +7655,31 @@ dtrace_unregister(dtrace_provider_id_t id)
|
||||
continue;
|
||||
|
||||
/*
|
||||
* We have at least one ECB; we can't remove this provider.
|
||||
* If we are trying to unregister a defunct provider, and the
|
||||
* provider was made defunct within the interval dictated by
|
||||
* dtrace_unregister_defunct_reap, we'll (asynchronously)
|
||||
* attempt to reap our enablings. To denote that the provider
|
||||
* should reattempt to unregister itself at some point in the
|
||||
* future, we will return a differentiable error code (EAGAIN
|
||||
* instead of EBUSY) in this case.
|
||||
*/
|
||||
if (dtrace_gethrtime() - old->dtpv_defunct >
|
||||
dtrace_unregister_defunct_reap)
|
||||
noreap = 1;
|
||||
|
||||
if (!self) {
|
||||
mutex_exit(&dtrace_lock);
|
||||
mutex_exit(&mod_lock);
|
||||
mutex_exit(&dtrace_provider_lock);
|
||||
}
|
||||
|
||||
if (noreap)
|
||||
return (EBUSY);
|
||||
|
||||
(void) taskq_dispatch(dtrace_taskq,
|
||||
(task_func_t *)dtrace_enabling_reap, NULL, TQ_SLEEP);
|
||||
|
||||
return (EAGAIN);
|
||||
}
|
||||
|
||||
/*
|
||||
@ -7756,7 +7776,7 @@ dtrace_invalidate(dtrace_provider_id_t id)
|
||||
mutex_enter(&dtrace_provider_lock);
|
||||
mutex_enter(&dtrace_lock);
|
||||
|
||||
pvp->dtpv_defunct = 1;
|
||||
pvp->dtpv_defunct = dtrace_gethrtime();
|
||||
|
||||
mutex_exit(&dtrace_lock);
|
||||
mutex_exit(&dtrace_provider_lock);
|
||||
@ -10719,6 +10739,7 @@ dtrace_buffer_switch(dtrace_buffer_t *buf)
|
||||
caddr_t tomax = buf->dtb_tomax;
|
||||
caddr_t xamot = buf->dtb_xamot;
|
||||
dtrace_icookie_t cookie;
|
||||
hrtime_t now = dtrace_gethrtime();
|
||||
|
||||
ASSERT(!(buf->dtb_flags & DTRACEBUF_NOSWITCH));
|
||||
ASSERT(!(buf->dtb_flags & DTRACEBUF_RING));
|
||||
@ -10734,6 +10755,8 @@ dtrace_buffer_switch(dtrace_buffer_t *buf)
|
||||
buf->dtb_drops = 0;
|
||||
buf->dtb_errors = 0;
|
||||
buf->dtb_flags &= ~(DTRACEBUF_ERROR | DTRACEBUF_DROPPED);
|
||||
buf->dtb_interval = now - buf->dtb_switched;
|
||||
buf->dtb_switched = now;
|
||||
dtrace_interrupt_enable(cookie);
|
||||
}
|
||||
|
||||
@ -11222,6 +11245,36 @@ dtrace_buffer_polish(dtrace_buffer_t *buf)
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* This routine determines if data generated at the specified time has likely
|
||||
* been entirely consumed at user-level. This routine is called to determine
|
||||
* if an ECB on a defunct probe (but for an active enabling) can be safely
|
||||
* disabled and destroyed.
|
||||
*/
|
||||
static int
|
||||
dtrace_buffer_consumed(dtrace_buffer_t *bufs, hrtime_t when)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < NCPU; i++) {
|
||||
dtrace_buffer_t *buf = &bufs[i];
|
||||
|
||||
if (buf->dtb_size == 0)
|
||||
continue;
|
||||
|
||||
if (buf->dtb_flags & DTRACEBUF_RING)
|
||||
return (0);
|
||||
|
||||
if (!buf->dtb_switched && buf->dtb_offset != 0)
|
||||
return (0);
|
||||
|
||||
if (buf->dtb_switched - buf->dtb_interval < when)
|
||||
return (0);
|
||||
}
|
||||
|
||||
return (1);
|
||||
}
|
||||
|
||||
static void
|
||||
dtrace_buffer_free(dtrace_buffer_t *bufs)
|
||||
{
|
||||
@ -11692,6 +11745,85 @@ dtrace_enabling_provide(dtrace_provider_t *prv)
|
||||
mutex_enter(&dtrace_lock);
|
||||
}
|
||||
|
||||
/*
|
||||
* Called to reap ECBs that are attached to probes from defunct providers.
|
||||
*/
|
||||
static void
|
||||
dtrace_enabling_reap(void)
|
||||
{
|
||||
dtrace_provider_t *prov;
|
||||
dtrace_probe_t *probe;
|
||||
dtrace_ecb_t *ecb;
|
||||
hrtime_t when;
|
||||
int i;
|
||||
|
||||
mutex_enter(&cpu_lock);
|
||||
mutex_enter(&dtrace_lock);
|
||||
|
||||
for (i = 0; i < dtrace_nprobes; i++) {
|
||||
if ((probe = dtrace_probes[i]) == NULL)
|
||||
continue;
|
||||
|
||||
if (probe->dtpr_ecb == NULL)
|
||||
continue;
|
||||
|
||||
prov = probe->dtpr_provider;
|
||||
|
||||
if ((when = prov->dtpv_defunct) == 0)
|
||||
continue;
|
||||
|
||||
/*
|
||||
* We have ECBs on a defunct provider: we want to reap these
|
||||
* ECBs to allow the provider to unregister. The destruction
|
||||
* of these ECBs must be done carefully: if we destroy the ECB
|
||||
* and the consumer later wishes to consume an EPID that
|
||||
* corresponds to the destroyed ECB (and if the EPID metadata
|
||||
* has not been previously consumed), the consumer will abort
|
||||
* processing on the unknown EPID. To reduce (but not, sadly,
|
||||
* eliminate) the possibility of this, we will only destroy an
|
||||
* ECB for a defunct provider if, for the state that
|
||||
* corresponds to the ECB:
|
||||
*
|
||||
* (a) There is no speculative tracing (which can effectively
|
||||
* cache an EPID for an arbitrary amount of time).
|
||||
*
|
||||
* (b) The principal buffers have been switched twice since the
|
||||
* provider became defunct.
|
||||
*
|
||||
* (c) The aggregation buffers are of zero size or have been
|
||||
* switched twice since the provider became defunct.
|
||||
*
|
||||
* We use dts_speculates to determine (a) and call a function
|
||||
* (dtrace_buffer_consumed()) to determine (b) and (c). Note
|
||||
* that as soon as we've been unable to destroy one of the ECBs
|
||||
* associated with the probe, we quit trying -- reaping is only
|
||||
* fruitful in as much as we can destroy all ECBs associated
|
||||
* with the defunct provider's probes.
|
||||
*/
|
||||
while ((ecb = probe->dtpr_ecb) != NULL) {
|
||||
dtrace_state_t *state = ecb->dte_state;
|
||||
dtrace_buffer_t *buf = state->dts_buffer;
|
||||
dtrace_buffer_t *aggbuf = state->dts_aggbuffer;
|
||||
|
||||
if (state->dts_speculates)
|
||||
break;
|
||||
|
||||
if (!dtrace_buffer_consumed(buf, when))
|
||||
break;
|
||||
|
||||
if (!dtrace_buffer_consumed(aggbuf, when))
|
||||
break;
|
||||
|
||||
dtrace_ecb_disable(ecb);
|
||||
ASSERT(probe->dtpr_ecb != ecb);
|
||||
dtrace_ecb_destroy(ecb);
|
||||
}
|
||||
}
|
||||
|
||||
mutex_exit(&dtrace_lock);
|
||||
mutex_exit(&cpu_lock);
|
||||
}
|
||||
|
||||
/*
|
||||
* DTrace DOF Functions
|
||||
*/
|
||||
@ -15529,6 +15661,10 @@ dtrace_open(struct cdev *dev, int oflags, int devtype, struct thread *td)
|
||||
#else
|
||||
devfs_set_cdevpriv(state, dtrace_dtr);
|
||||
#endif
|
||||
/* This code actually belongs in dtrace_attach() */
|
||||
if (dtrace_opens == 1)
|
||||
dtrace_taskq = taskq_create("dtrace_taskq", 1, maxclsyspri,
|
||||
1, INT_MAX, 0);
|
||||
#endif
|
||||
|
||||
mutex_exit(&cpu_lock);
|
||||
@ -15616,6 +15752,11 @@ dtrace_dtr(void *data)
|
||||
(void) kdi_dtrace_set(KDI_DTSET_DTRACE_DEACTIVATE);
|
||||
#else
|
||||
--dtrace_opens;
|
||||
/* This code actually belongs in dtrace_detach() */
|
||||
if ((dtrace_opens == 0) && (dtrace_taskq != NULL)) {
|
||||
taskq_destroy(dtrace_taskq);
|
||||
dtrace_taskq = NULL;
|
||||
}
|
||||
#endif
|
||||
|
||||
mutex_exit(&dtrace_lock);
|
||||
|
||||
@ -175,6 +175,9 @@ static volatile uint64_t fasttrap_mod_gen;
|
||||
static uint32_t fasttrap_max;
|
||||
static uint32_t fasttrap_total;
|
||||
|
||||
/*
|
||||
* Copyright (c) 2011, Joyent, Inc. All rights reserved.
|
||||
*/
|
||||
|
||||
#define FASTTRAP_TPOINTS_DEFAULT_SIZE 0x4000
|
||||
#define FASTTRAP_PROVIDERS_DEFAULT_SIZE 0x100
|
||||
@ -317,7 +320,7 @@ fasttrap_pid_cleanup_cb(void *data)
|
||||
fasttrap_provider_t **fpp, *fp;
|
||||
fasttrap_bucket_t *bucket;
|
||||
dtrace_provider_id_t provid;
|
||||
int i, later = 0;
|
||||
int i, later = 0, rval;
|
||||
|
||||
static volatile int in = 0;
|
||||
ASSERT(in == 0);
|
||||
@ -378,9 +381,13 @@ fasttrap_pid_cleanup_cb(void *data)
|
||||
* clean out the unenabled probes.
|
||||
*/
|
||||
provid = fp->ftp_provid;
|
||||
if (dtrace_unregister(provid) != 0) {
|
||||
if ((rval = dtrace_unregister(provid)) != 0) {
|
||||
if (fasttrap_total > fasttrap_max / 2)
|
||||
(void) dtrace_condense(provid);
|
||||
|
||||
if (rval == EAGAIN)
|
||||
fp->ftp_marked = 1;
|
||||
|
||||
later += fp->ftp_marked;
|
||||
fpp = &fp->ftp_next;
|
||||
} else {
|
||||
@ -408,12 +415,15 @@ fasttrap_pid_cleanup_cb(void *data)
|
||||
* get a chance to do that work if and when the timeout is reenabled
|
||||
* (if detach fails).
|
||||
*/
|
||||
if (later > 0 && callout_active(&fasttrap_timeout))
|
||||
callout_reset(&fasttrap_timeout, hz, &fasttrap_pid_cleanup_cb,
|
||||
NULL);
|
||||
if (later > 0) {
|
||||
if (callout_active(&fasttrap_timeout)) {
|
||||
callout_reset(&fasttrap_timeout, hz,
|
||||
&fasttrap_pid_cleanup_cb, NULL);
|
||||
}
|
||||
|
||||
else if (later > 0)
|
||||
fasttrap_cleanup_work = 1;
|
||||
else {
|
||||
} else {
|
||||
#if !defined(sun)
|
||||
/* Nothing to be done for FreeBSD */
|
||||
#endif
|
||||
|
||||
@ -26,11 +26,13 @@
|
||||
* Use is subject to license terms.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Copyright (c) 2011, Joyent, Inc. All rights reserved.
|
||||
*/
|
||||
|
||||
#ifndef _SYS_DTRACE_IMPL_H
|
||||
#define _SYS_DTRACE_IMPL_H
|
||||
|
||||
#pragma ident "%Z%%M% %I% %E% SMI"
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
@ -429,8 +431,11 @@ typedef struct dtrace_buffer {
|
||||
uint32_t dtb_errors; /* number of errors */
|
||||
uint32_t dtb_xamot_errors; /* errors in inactive buffer */
|
||||
#ifndef _LP64
|
||||
uint64_t dtb_pad1;
|
||||
uint64_t dtb_pad1; /* pad out to 64 bytes */
|
||||
#endif
|
||||
uint64_t dtb_switched; /* time of last switch */
|
||||
uint64_t dtb_interval; /* observed switch interval */
|
||||
uint64_t dtb_pad2[6]; /* pad to avoid false sharing */
|
||||
} dtrace_buffer_t;
|
||||
|
||||
/*
|
||||
@ -1162,7 +1167,7 @@ struct dtrace_provider {
|
||||
dtrace_pops_t dtpv_pops; /* provider operations */
|
||||
char *dtpv_name; /* provider name */
|
||||
void *dtpv_arg; /* provider argument */
|
||||
uint_t dtpv_defunct; /* boolean: defunct provider */
|
||||
hrtime_t dtpv_defunct; /* when made defunct */
|
||||
struct dtrace_provider *dtpv_next; /* next provider */
|
||||
};
|
||||
|
||||
|
||||
@ -3,6 +3,7 @@
|
||||
ARCHDIR= ${MACHINE_CPUARCH}
|
||||
|
||||
.PATH: ${.CURDIR}/../../../cddl/contrib/opensolaris/uts/common/dtrace
|
||||
.PATH: ${.CURDIR}/../../../cddl/compat/opensolaris/kern
|
||||
.PATH: ${.CURDIR}/../../../cddl/kern
|
||||
.PATH: ${.CURDIR}/../../../cddl/dev/dtrace
|
||||
.PATH: ${.CURDIR}/../../../cddl/dev/dtrace/${ARCHDIR}
|
||||
@ -26,6 +27,9 @@ SRCS+= assym.s
|
||||
# These are needed for assym.s
|
||||
SRCS+= opt_compat.h opt_kstack_pages.h opt_nfs.h opt_hwpmc_hooks.h
|
||||
|
||||
#This is needed for dtrace.c
|
||||
SRCS += opensolaris_taskq.c
|
||||
|
||||
.if ${MACHINE_CPUARCH} == "i386"
|
||||
SRCS+= opt_apic.h
|
||||
.endif
|
||||
|
||||
Loading…
Reference in New Issue
Block a user