On Tue, Mar 12, 2024 at 12:20:29AM +0800, Zorro Lang wrote: > If kernel supports io_uring, userspace still can/might disable that > supporting by set /proc/sys/kernel/io_uring_disabled=2. Let's notrun > if io_uring is disabled by that way. > > Signed-off-by: Zorro Lang <zlang@xxxxxxxxxx> Looks fine to me, Reviewed-by: Darrick J. Wong <djwong@xxxxxxxxxx> --D > --- > README | 6 ++++++ > common/rc | 10 ++++++++++ > src/feature.c | 19 ++++++++++++------- > 3 files changed, 28 insertions(+), 7 deletions(-) > > diff --git a/README b/README > index c46690c4..477136de 100644 > --- a/README > +++ b/README > @@ -142,6 +142,12 @@ Setup Environment > https://www.lscdweb.com/registered/udf_verifier.html, then copy the udf_test > binary to xfstests/src/. > > +8. (optional) To do io_uring related testing, please make sure below 3 things: > + 1) kernel is built with CONFIG_IO_URING=y > + 2) sysctl -w kernel.io_uring_disabled=0 (or set it to 2 to disable io_uring > + testing dynamically if kernel supports) > + 3) install liburing development package contains liburing.h before building > + fstests > > For example, to run the tests with loopback partitions: > > diff --git a/common/rc b/common/rc > index 50dde313..1406d8d9 100644 > --- a/common/rc > +++ b/common/rc > @@ -2317,6 +2317,8 @@ _require_aiodio() > # this test requires that the kernel supports IO_URING > _require_io_uring() > { > + local n > + > $here/src/feature -R > case $? in > 0) > @@ -2324,6 +2326,14 @@ _require_io_uring() > 1) > _notrun "kernel does not support IO_URING" > ;; > + 2) > + n=$(sysctl -n kernel.io_uring_disabled 2>/dev/null) > + if [ "$n" != "0" ];then > + _notrun "io_uring isn't enabled totally by admin" > + else > + _fail "unexpected EPERM error, please check selinux or something else" > + fi > + ;; > *) > _fail "unexpected error testing for IO_URING support" > ;; > diff --git a/src/feature.c b/src/feature.c > index 941f96fb..7e474ce5 100644 > --- a/src/feature.c > +++ b/src/feature.c > @@ -232,15 +232,20 @@ check_uring_support(void) > int err; > > err = io_uring_queue_init(1, &ring, 0); > - if (err == 0) > + switch (err) { > + case 0: > return 0; > - > - if (err == -ENOSYS) /* CONFIG_IO_URING=n */ > + case -ENOSYS: > + /* CONFIG_IO_URING=n */ > return 1; > - > - fprintf(stderr, "unexpected error from io_uring_queue_init(): %s\n", > - strerror(-err)); > - return 2; > + case -EPERM: > + /* Might be due to sysctl io_uring_disabled isn't 0 */ > + return 2; > + default: > + fprintf(stderr, "unexpected error from io_uring_queue_init(): %s\n", > + strerror(-err)); > + return 100; > + } > #else > /* liburing is unavailable, assume IO_URING is unsupported */ > return 1; > -- > 2.43.0 > >
