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geli: enable direct dispatch

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geli does all of its crypto operations in a separate thread pool, so
g_eli_start, g_eli_read_done, and g_eli_write_done don't actually do very
much work. Enabling direct dispatch eliminates the g_up/g_down bottlenecks,
doubling IOPs on my system. This change does not affect the thread pool.

Reviewed by:	markj
MFC after:	2 weeks
Sponsored by:	Axcient
Differential Revision:	https://reviews.freebsd.org/D25587
This commit is contained in:
Alan Somers 2020-07-08 17:12:12 +00:00
parent f13e619347
commit 6f818c1fb0
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=363014
3 changed files with 73 additions and 0 deletions
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3
sys/geom/eli/g_eli.c
View File

@ -734,6 +734,7 @@ g_eli_read_metadata_offset(struct g_class *mp, struct g_provider *pp,
gp->orphan = g_eli_orphan_spoil_assert;
gp->spoiled = g_eli_orphan_spoil_assert;
cp = g_new_consumer(gp);
cp->flags |= G_CF_DIRECT_SEND | G_CF_DIRECT_RECEIVE;
error = g_attach(cp, pp);
if (error != 0)
goto end;
@ -882,6 +883,7 @@ g_eli_create(struct gctl_req *req, struct g_class *mp, struct g_provider *bpp,
pp = NULL;
cp = g_new_consumer(gp);
cp->flags |= G_CF_DIRECT_SEND | G_CF_DIRECT_RECEIVE;
error = g_attach(cp, bpp);
if (error != 0) {
if (req != NULL) {
@ -969,6 +971,7 @@ g_eli_create(struct gctl_req *req, struct g_class *mp, struct g_provider *bpp,
* Create decrypted provider.
*/
pp = g_new_providerf(gp, "%s%s", bpp->name, G_ELI_SUFFIX);
pp->flags |= G_PF_DIRECT_SEND | G_PF_DIRECT_RECEIVE;
pp->mediasize = sc->sc_mediasize;
pp->sectorsize = sc->sc_sectorsize;
LIST_FOREACH(gap, &bpp->aliases, ga_next)

1
tests/sys/geom/class/eli/Makefile
View File

@ -17,6 +17,7 @@ ATF_TESTS_SH+= kill_test
ATF_TESTS_SH+= misc_test
ATF_TESTS_SH+= onetime_test
ATF_TESTS_SH+= online_resize_test
ATF_TESTS_SH+= reentrancy_test
ATF_TESTS_SH+= resize_test
ATF_TESTS_SH+= setkey_test

69
tests/sys/geom/class/eli/reentrancy_test.sh Executable file
View File

@ -0,0 +1,69 @@
# $FreeBSD$
# Test various operations for geli-on-geli providers, to ensure that geli is
# reentrant.
. $(atf_get_srcdir)/conf.sh
init_test()
{
cipher=$1
aalgo=$2
secsize=$3
ealgo=${cipher%%:*}
keylen=${cipher##*:}
atf_check dd if=/dev/random of=testdata bs=$secsize count=1 status=none
atf_check dd if=/dev/random of=keyfile bs=$secsize count=16 status=none
# Create the lower geli device
atf_check -s exit:0 -e ignore \
geli init -B none -a $aalgo -e $ealgo -l $keylen -P -K keyfile \
-s $secsize ${md}
atf_check geli attach -p -k keyfile ${md}
# Create the upper geli device
atf_check -s exit:0 -e ignore \
geli init -B none -a $aalgo -e $ealgo -l $keylen -P -K keyfile \
-s $secsize ${md}.eli
atf_check geli attach -p -k keyfile ${md}.eli
echo ${md} > layered_md_device
# Ensure we can read and write.
atf_check dd if=testdata of=/dev/${md}.eli.eli bs=$secsize count=1 \
status=none
atf_check dd if=/dev/${md}.eli.eli of=cmpdata bs=$secsize count=1 \
status=none
atf_check cmp -s testdata cmpdata
geli detach ${md}.eli 2>/dev/null
}
atf_test_case init cleanup
init_head()
{
atf_set "descr" "Initialize a geli provider on top of another"
atf_set "require.user" "root"
atf_set "timeout" 600
}
init_body()
{
sectors=2
geli_test_setup
for_each_geli_config init_test
}
init_cleanup()
{
if [ -f layered_md_device ]; then
while read provider; do
[ -c /dev/${md}.eli.eli ] && \
geli detach $md.eli.eli 2>/dev/null
done < layered_md_device
fi
geli_test_cleanup
}
atf_init_test_cases()
{
atf_add_test_case init
}