Hi all,
This patch series adds support to run tests via kunit_tool on the
SuperH-based virtualized r2d platform. As r2d uses the second serial
port as the console, this needs a small modification of the core
infrastructure.
Thanks for your comments!
Geert Uytterhoeven (2):
kunit: tool: Add support for overriding the QEMU serial port
kunit: tool: Add support for SH under QEMU
tools/testing/kunit/kunit_kernel.py | 3 ++-
tools/testing/kunit/qemu_config.py | 1 +
tools/testing/kunit/qemu_configs/sh.py | 17 +++++++++++++++++
3 files changed, 20 insertions(+), 1 deletion(-)
create mode 100644 tools/testing/kunit/qemu_configs/sh.py
--
2.34.1
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert(a)linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
The default timeout for kselftests is 45 seconds, but that isn't enough
time to run pcm-test when there are many PCMs on the device, nor for
mixer-test when slower control buses and fancier CODECs are present.
As data points, running pcm-test on mt8192-asurada-spherion takes about
1m15s, and mixer-test on rk3399-gru-kevin takes about 2m.
Set the timeout to 4 minutes to allow both pcm-test and mixer-test to
run to completion with some slack.
Reviewed-by: Mark Brown <broonie(a)kernel.org>
Signed-off-by: Nícolas F. R. A. Prado <nfraprado(a)collabora.com>
---
Changes in v2:
- Reduced timeout from 10 to 4 minutes
- Tweaked commit message to also mention mixer-test and run time for
mixer-test on rk3399-gru-kevin
tools/testing/selftests/alsa/settings | 1 +
1 file changed, 1 insertion(+)
create mode 100644 tools/testing/selftests/alsa/settings
diff --git a/tools/testing/selftests/alsa/settings b/tools/testing/selftests/alsa/settings
new file mode 100644
index 000000000000..b478e684846a
--- /dev/null
+++ b/tools/testing/selftests/alsa/settings
@@ -0,0 +1 @@
+timeout=240
--
2.39.0
Add unaligned descriptor test for frame size of 4001. Using an odd frame
size ensures that the end of the UMEM is not near a page boundary. This
allows testing descriptors that staddle the end of the UMEM but not a
page.
This test used to fail without the previous commit ("xsk: Add check for
unaligned descriptors that overrun UMEM").
Signed-off-by: Kal Conley <kal.conley(a)dectris.com>
---
tools/testing/selftests/bpf/xskxceiver.c | 25 ++++++++++++++++++++++++
tools/testing/selftests/bpf/xskxceiver.h | 1 +
2 files changed, 26 insertions(+)
diff --git a/tools/testing/selftests/bpf/xskxceiver.c b/tools/testing/selftests/bpf/xskxceiver.c
index 1a4bdd5aa78c..9b9efd0e0a4c 100644
--- a/tools/testing/selftests/bpf/xskxceiver.c
+++ b/tools/testing/selftests/bpf/xskxceiver.c
@@ -69,6 +69,7 @@
*/
#define _GNU_SOURCE
+#include <assert.h>
#include <fcntl.h>
#include <errno.h>
#include <getopt.h>
@@ -1876,6 +1877,30 @@ static void run_pkt_test(struct test_spec *test, enum test_mode mode, enum test_
test->ifobj_rx->umem->unaligned_mode = true;
testapp_invalid_desc(test);
break;
+ case TEST_TYPE_UNALIGNED_INV_DESC_4K1_FRAME:
+ if (!hugepages_present(test->ifobj_tx)) {
+ ksft_test_result_skip("No 2M huge pages present.\n");
+ return;
+ }
+ test_spec_set_name(test, "UNALIGNED_INV_DESC_4K1_FRAME_SIZE");
+ /* Odd frame size so the UMEM doesn't end near a page boundary. */
+ test->ifobj_tx->umem->frame_size = 4001;
+ test->ifobj_rx->umem->frame_size = 4001;
+ test->ifobj_tx->umem->unaligned_mode = true;
+ test->ifobj_rx->umem->unaligned_mode = true;
+ /* This test exists to test descriptors that staddle the end of
+ * the UMEM but not a page.
+ */
+ {
+ u64 umem_size = test->ifobj_tx->umem->num_frames *
+ test->ifobj_tx->umem->frame_size;
+ u64 page_size = sysconf(_SC_PAGESIZE);
+
+ assert(umem_size % page_size > PKT_SIZE);
+ assert(umem_size % page_size < page_size - PKT_SIZE);
+ }
+ testapp_invalid_desc(test);
+ break;
case TEST_TYPE_UNALIGNED:
if (!testapp_unaligned(test))
return;
diff --git a/tools/testing/selftests/bpf/xskxceiver.h b/tools/testing/selftests/bpf/xskxceiver.h
index cc24ab72f3ff..919327807a4e 100644
--- a/tools/testing/selftests/bpf/xskxceiver.h
+++ b/tools/testing/selftests/bpf/xskxceiver.h
@@ -78,6 +78,7 @@ enum test_type {
TEST_TYPE_ALIGNED_INV_DESC,
TEST_TYPE_ALIGNED_INV_DESC_2K_FRAME,
TEST_TYPE_UNALIGNED_INV_DESC,
+ TEST_TYPE_UNALIGNED_INV_DESC_4K1_FRAME,
TEST_TYPE_HEADROOM,
TEST_TYPE_TEARDOWN,
TEST_TYPE_BIDI,
--
2.39.2
Fix flaky STATS_RX_DROPPED test. The receiver calls getsockopt after
receiving the last (valid) packet which is not the final packet sent in
the test (valid and invalid packets are sent in alternating fashion with
the final packet being invalid). Since the last packet may or may not
have been dropped already, both outcomes must be allowed.
This issue could also be fixed by making sure the last packet sent is
valid. This alternative is left as an exercise to the reader (or the
benevolent maintainers of this file).
This problem was quite visible on certain setups. On one machine this
failure was observed 50% of the time.
Also, remove a redundant assignment of pkt_stream->nb_pkts. This field
is already initialized by __pkt_stream_alloc.
Fixes: 27e934bec35b ("selftests: xsk: make stat tests not spin on getsockopt")
Signed-off-by: Kal Conley <kal.conley(a)dectris.com>
---
tools/testing/selftests/bpf/xskxceiver.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/bpf/xskxceiver.c b/tools/testing/selftests/bpf/xskxceiver.c
index 34a1f32fe752..1a4bdd5aa78c 100644
--- a/tools/testing/selftests/bpf/xskxceiver.c
+++ b/tools/testing/selftests/bpf/xskxceiver.c
@@ -633,7 +633,6 @@ static struct pkt_stream *pkt_stream_generate(struct xsk_umem_info *umem, u32 nb
if (!pkt_stream)
exit_with_error(ENOMEM);
- pkt_stream->nb_pkts = nb_pkts;
for (i = 0; i < nb_pkts; i++) {
pkt_set(umem, &pkt_stream->pkts[i], (i % umem->num_frames) * umem->frame_size,
pkt_len);
@@ -1141,7 +1140,14 @@ static int validate_rx_dropped(struct ifobject *ifobject)
if (err)
return TEST_FAILURE;
- if (stats.rx_dropped == ifobject->pkt_stream->nb_pkts / 2)
+ /* The receiver calls getsockopt after receiving the last (valid)
+ * packet which is not the final packet sent in this test (valid and
+ * invalid packets are sent in alternating fashion with the final
+ * packet being invalid). Since the last packet may or may not have
+ * been dropped already, both outcomes must be allowed.
+ */
+ if (stats.rx_dropped == ifobject->pkt_stream->nb_pkts / 2 ||
+ stats.rx_dropped == ifobject->pkt_stream->nb_pkts / 2 - 1)
return TEST_PASS;
return TEST_FAILURE;
--
2.39.2
We're testing usage of vsock as a way to redirect guest-local UDS
requests to the host and this patch series greatly improves the
performance of such a setup.
Compared to copying packets via userspace, this improves throughput by
121% in basic testing.
Tested as follows.
Setup: guest unix dgram sender -> guest vsock redirector -> host vsock
server
Threads: 1
Payload: 64k
No sockmap:
- 76.3 MB/s
- The guest vsock redirector was
"socat VSOCK-CONNECT:2:1234 UNIX-RECV:/path/to/sock"
Using sockmap (this patch):
- 168.8 MB/s (+121%)
- The guest redirector was a simple sockmap echo server,
redirecting unix ingress to vsock 2:1234 egress.
- Same sender and server programs
*Note: these numbers are from RFC v1
Only the virtio transport has been tested. The loopback transport was
used in writing bpf/selftests, but not thoroughly tested otherwise.
This series requires the skb patch.
Changes in v4:
- af_vsock: fix parameter alignment in vsock_dgram_recvmsg()
- af_vsock: add TCP_ESTABLISHED comment in vsock_dgram_connect()
- vsock/bpf: change ret type to bool
Changes in v3:
- vsock/bpf: Refactor wait logic in vsock_bpf_recvmsg() to avoid
backwards goto
- vsock/bpf: Check psock before acquiring slock
- vsock/bpf: Return bool instead of int of 0 or 1
- vsock/bpf: Wrap macro args __sk/__psock in parens
- vsock/bpf: Place comment trailer */ on separate line
Changes in v2:
- vsock/bpf: rename vsock_dgram_* -> vsock_*
- vsock/bpf: change sk_psock_{get,put} and {lock,release}_sock() order
to minimize slock hold time
- vsock/bpf: use "new style" wait
- vsock/bpf: fix bug in wait log
- vsock/bpf: add check that recvmsg sk_type is one dgram, seqpacket, or
stream. Return error if not one of the three.
- virtio/vsock: comment __skb_recv_datagram() usage
- virtio/vsock: do not init copied in read_skb()
- vsock/bpf: add ifdef guard around struct proto in dgram_recvmsg()
- selftests/bpf: add vsock loopback config for aarch64
- selftests/bpf: add vsock loopback config for s390x
- selftests/bpf: remove vsock device from vmtest.sh qemu machine
- selftests/bpf: remove CONFIG_VIRTIO_VSOCKETS=y from config.x86_64
- vsock/bpf: move transport-related (e.g., if (!vsk->transport)) checks
out of fast path
Signed-off-by: Bobby Eshleman <bobby.eshleman(a)bytedance.com>
---
Bobby Eshleman (3):
vsock: support sockmap
selftests/bpf: add vsock to vmtest.sh
selftests/bpf: add a test case for vsock sockmap
drivers/vhost/vsock.c | 1 +
include/linux/virtio_vsock.h | 1 +
include/net/af_vsock.h | 17 ++
net/vmw_vsock/Makefile | 1 +
net/vmw_vsock/af_vsock.c | 64 +++++++-
net/vmw_vsock/virtio_transport.c | 2 +
net/vmw_vsock/virtio_transport_common.c | 25 +++
net/vmw_vsock/vsock_bpf.c | 174 +++++++++++++++++++++
net/vmw_vsock/vsock_loopback.c | 2 +
tools/testing/selftests/bpf/config.aarch64 | 2 +
tools/testing/selftests/bpf/config.s390x | 3 +
tools/testing/selftests/bpf/config.x86_64 | 3 +
.../selftests/bpf/prog_tests/sockmap_listen.c | 163 +++++++++++++++++++
13 files changed, 452 insertions(+), 6 deletions(-)
---
base-commit: e5b42483ccce50d5b957f474fd332afd4ef0c27b
change-id: 20230327-vsock-sockmap-30b090c70cd1
Best regards,
--
Bobby Eshleman <bobby.eshleman(a)bytedance.com>
Hi all,
This is a cleanup series to consolidate a common signal setup code.
Right now quite a bit of duplicated code is there in an unorganized
way. Here is a rework of that signal-related code:
(1) Consolidate the signal handler helpers
They have been exactly copied everywhere. Place them in the shared
code. Then, remove those duplicates.
(2) Simplify altstack code
Most cases require just a usable alternate stack. So, there is a
chance to simplify them all. Abstract the entire setup code to one
setup call. Then, it can reduce the amount of code there.
For testing sigaltstack() specifically, another helper is provided
that excludes the syscall part.
The series also includes some preparatory changes for them:
* Along with the rework, some existing problem was uncovered. A couple
of tests look to free the altstack memory even before the signal
delivery. Adjust the memory cleanup to resolve this issue.
* Also resolve a define conflict separately before including the
refactored header.
Then, there is another selftest fix that I posted:
https://lore.kernel.org/lkml/20230330233520.21937-1-chang.seok.bae@intel.co…
which has a conflict with this. As the fix should go first, this
cleanup series is based on it.
FWIW, at the moment, the new x86 selftest cases -- lam and
test_shadow_stack do not conflict with this.
Here is the repository where this series can be found:
git://github.com/intel/amx-linux.git selftest-signal
Thanks,
Chang
Chang S. Bae (4):
selftests/x86: Fix the altstack free
selftests/x86/mov_ss_trap: Include processor-flags.h
selftests/x86: Consolidate signal handler helpers
selftests/x86: Refactor altstack setup code
tools/testing/selftests/x86/Makefile | 16 ++-
tools/testing/selftests/x86/amx.c | 67 +++--------
.../selftests/x86/corrupt_xstate_header.c | 15 +--
tools/testing/selftests/x86/entry_from_vm86.c | 25 +---
tools/testing/selftests/x86/fsgsbase.c | 25 +---
tools/testing/selftests/x86/helpers.c | 110 ++++++++++++++++++
tools/testing/selftests/x86/helpers.h | 10 ++
tools/testing/selftests/x86/ioperm.c | 26 +----
tools/testing/selftests/x86/iopl.c | 26 +----
tools/testing/selftests/x86/ldt_gdt.c | 19 +--
tools/testing/selftests/x86/mov_ss_trap.c | 26 +----
tools/testing/selftests/x86/ptrace_syscall.c | 24 +---
tools/testing/selftests/x86/sigaltstack.c | 67 +++--------
tools/testing/selftests/x86/sigreturn.c | 35 +-----
.../selftests/x86/single_step_syscall.c | 36 +-----
.../testing/selftests/x86/syscall_arg_fault.c | 24 +---
tools/testing/selftests/x86/syscall_nt.c | 13 ---
tools/testing/selftests/x86/sysret_rip.c | 24 +---
tools/testing/selftests/x86/test_vsyscall.c | 13 ---
tools/testing/selftests/x86/unwind_vdso.c | 13 ---
20 files changed, 205 insertions(+), 409 deletions(-)
create mode 100644 tools/testing/selftests/x86/helpers.c
--
2.17.1
vfprintf() is complex and so far did not have proper tests.
This series is based on the "dev" branch of the RCU tree.
Signed-off-by: Thomas Weißschuh <linux(a)weissschuh.net>
---
Changes in v2:
- Include <sys/mman.h> for tests.
- Implement FILE* in terms of integer pointers.
- Provide fdopen() and fileno().
- Link to v1: https://lore.kernel.org/lkml/20230328-nolibc-printf-test-v1-0-d7290ec893dd@…
---
Thomas Weißschuh (3):
tools/nolibc: add wrapper for memfd_create
tools/nolibc: implement fd-based FILE streams
tools/nolibc: add testcases for vfprintf
tools/include/nolibc/stdio.h | 60 +++++++++++----------
tools/include/nolibc/sys.h | 23 ++++++++
tools/testing/selftests/nolibc/nolibc-test.c | 78 ++++++++++++++++++++++++++++
3 files changed, 134 insertions(+), 27 deletions(-)
---
base-commit: a63baab5f60110f3631c98b55d59066f1c68c4f7
change-id: 20230328-nolibc-printf-test-052d5abc2118
Best regards,
--
Thomas Weißschuh <linux(a)weissschuh.net>
vfprintf() is complex and so far did not have proper tests.
This series is based on the "dev" branch of the RCU tree.
Signed-off-by: Thomas Weißschuh <linux(a)weissschuh.net>
---
Thomas Weißschuh (3):
tools/nolibc: add wrapper for memfd_create
tools/nolibc: let FILE streams contain an fd
tools/nolibc: add testcases for vfprintf
tools/include/nolibc/stdio.h | 36 +++----------
tools/include/nolibc/sys.h | 23 +++++++++
tools/testing/selftests/nolibc/nolibc-test.c | 77 ++++++++++++++++++++++++++++
3 files changed, 107 insertions(+), 29 deletions(-)
---
base-commit: a5333c037de823912dd20e933785c63de7679e64
change-id: 20230328-nolibc-printf-test-052d5abc2118
Best regards,
--
Thomas Weißschuh <linux(a)weissschuh.net>
Hi,
This series adds initial KVM selftests support for powerpc
(64-bit, BookS). It spans 3 maintainers but it does not really
affect arch/powerpc, and it is well contained in selftests
code, just touches some makefiles and a tiny bit headers so
conflicts should be unlikely and trivial.
I guess Paolo is the best point to merge these, if no comments
or objections?
Thanks,
Nick
Nicholas Piggin (2):
KVM: PPC: Add kvm selftests support for powerpc
KVM: PPC: Add basic framework tests for kvm selftests
tools/testing/selftests/kvm/Makefile | 14 +
.../selftests/kvm/include/kvm_util_base.h | 13 +
.../selftests/kvm/include/powerpc/hcall.h | 22 ++
.../selftests/kvm/include/powerpc/processor.h | 13 +
tools/testing/selftests/kvm/lib/kvm_util.c | 10 +
.../testing/selftests/kvm/lib/powerpc/hcall.c | 45 +++
.../selftests/kvm/lib/powerpc/processor.c | 355 ++++++++++++++++++
.../testing/selftests/kvm/lib/powerpc/ucall.c | 30 ++
.../testing/selftests/kvm/powerpc/null_test.c | 186 +++++++++
.../selftests/kvm/powerpc/rtas_hcall.c | 146 +++++++
10 files changed, 834 insertions(+)
create mode 100644 tools/testing/selftests/kvm/include/powerpc/hcall.h
create mode 100644 tools/testing/selftests/kvm/include/powerpc/processor.h
create mode 100644 tools/testing/selftests/kvm/lib/powerpc/hcall.c
create mode 100644 tools/testing/selftests/kvm/lib/powerpc/processor.c
create mode 100644 tools/testing/selftests/kvm/lib/powerpc/ucall.c
create mode 100644 tools/testing/selftests/kvm/powerpc/null_test.c
create mode 100644 tools/testing/selftests/kvm/powerpc/rtas_hcall.c
--
2.37.2
This patch set adds support for using FOU or GUE encapsulation with
an ipip device operating in collect-metadata mode and a set of kfuncs
for controlling encap parameters exposed to a BPF tc-hook.
BPF tc-hooks allow us to read tunnel metadata (like remote IP addresses)
in the ingress path of an externally controlled tunnel interface via
the bpf_skb_get_tunnel_{key,opt} bpf-helpers. Packets can then be
redirected to the same or a different externally controlled tunnel
interface by overwriting metadata via the bpf_skb_set_tunnel_{key,opt}
helpers and a call to bpf_redirect. This enables us to redirect packets
between tunnel interfaces - and potentially change the encapsulation
type - using only a single BPF program.
Today this approach works fine for a couple of tunnel combinations.
For example: redirecting packets between Geneve and GRE interfaces or
GRE and plain ipip interfaces. However, redirecting using FOU or GUE is
not supported today. The ip_tunnel module does not allow us to egress
packets using additional UDP encapsulation from an ipip device in
collect-metadata mode.
Patch 1 lifts this restriction by adding a struct ip_tunnel_encap to
the tunnel metadata. It can be filled by a new BPF kfunc introduced
in Patch 2 and evaluated by the ip_tunnel egress path. This will allow
us to use FOU and GUE encap with externally controlled ipip devices.
Patch 2 introduces two new BPF kfuncs: bpf_skb_{set,get}_fou_encap.
These helpers can be used to set and get UDP encap parameters from the
BPF tc-hook doing the packet redirect.
Patch 3 adds BPF tunnel selftests using the two kfuncs.
Christian Ehrig (3):
ipip,ip_tunnel,sit: Add FOU support for externally controlled ipip
devices
bpf,fou: Add bpf_skb_{set,get}_fou_encap kfuncs
selftests/bpf: Test FOU kfuncs for externally controlled ipip devices
include/net/fou.h | 2 +
include/net/ip_tunnels.h | 27 ++--
net/ipv4/Makefile | 2 +-
net/ipv4/fou_bpf.c | 118 ++++++++++++++++++
net/ipv4/fou_core.c | 5 +
net/ipv4/ip_tunnel.c | 22 +++-
net/ipv4/ipip.c | 1 +
net/ipv6/sit.c | 2 +-
.../selftests/bpf/progs/test_tunnel_kern.c | 117 +++++++++++++++++
tools/testing/selftests/bpf/test_tunnel.sh | 81 ++++++++++++
10 files changed, 360 insertions(+), 17 deletions(-)
create mode 100644 net/ipv4/fou_bpf.c
--
2.39.2
Support ROHM BU27034 ALS sensor
This series adds support for ROHM BU27034 Ambient Light Sensor.
The BU27034 has configurable gain and measurement (integration) time
settings. Both of these have inversely proportional relation to the
sensor's intensity channel scale.
Many users only set the scale, which means that many drivers attempt to
'guess' the best gain+time combination to meet the scale. Usually this
is the biggest integration time which allows setting the requested
scale. Typically, increasing the integration time has better accuracy
than increasing the gain, which often amplifies the noise as well as the
real signal.
However, there may be cases where more responsive sensors are needed.
So, in some cases the longest integration times may not be what the user
prefers. The driver has no way of knowing this.
Hence, the approach taken by this series is to allow user to set both
the scale and the integration time with following logic:
1. When scale is set, the existing integration time is tried to be
maintained as a first priority.
1a) If the requested scale can't be met by current time, then also
other time + gain combinations are searched. If scale can be met
by some other integration time, then the new time may be applied.
If the time setting is common for all channels, then also other
channels must be able to maintain their scale with this new time
(by changing their gain). The new times are scanned in the order
of preference (typically the longest times first).
1b) If the requested scale can be met using current time, then only
the gain for the channel is changed.
2. When the integration time change - scale is tried to be maintained.
When integration time change is requested also gain for all impacted
channels is adjusted so that the scale is not changed, or is chaned
as little as possible. This is different from the RFCv1 where the
request was rejected if suitable gain couldn't be found for some
channel(s).
This logic is simple. When total gain (either caused by time or hw-gain)
is doubled, the scale gets halved. Also, the supported times are given a
'multiplier' value which tells how much they increase the total gain.
However, when I wrote this logic in bu27034 driver, I made quite a few
errors on the way - and driver got pretty big. As I am writing drivers
for two other sensors (RGB C/IR + flicker BU27010 and RGB C/IR BU27008)
with similar gain-time-scale logic I thought that adding common helpers
for these computations might be wise. I hope this way all the bugs will
be concentrated in one place and not in every individual driver ;)
Hence, this series also intriduces IIO gain-time-scale helpers
(abbreviated as gts-helpers) + a couple of KUnit tests for the most
hairy parts.
Speaking of which - testing the devm interfaces requires a 'dummy
device'. There were neat helpers in DRM tests for creating and freeing
such a device. This series moves those helpers to more generic location.
What is worth noting is that there is something similar ongoing in the
CCF territory:
https://lore.kernel.org/all/20230302013822.1808711-1-sboyd@kernel.org/
These efforts should be somehow coordinated in order to avoid any avoid
conflicts.
Finally, these added helpers do provide some value also for drivers
which only:
a) allow gain change
or
b) allow changing both the time and gain while trying to maintain the
scale.
For a) we provide the gain - selector (register value) table format +
selector to gain look-ups, gain <-> scale conversions and the available
scales helpers.
For latter case we also provide the time-tables, and actually all the
APIs should be usable by setting the time multiplier to 1. (not testeted
thoroughly though).
The patch 1/8 introduces the helpers for creating/dropping a test device
for devm-tests. It can be applied alone.
The patches 2/8 (convert DRM tests to use new helper) depends on patch
1/8 but is othervice not part of this series. It can be applied to DRM
tree after the dependency to 1/8 is handled.
The patch 5/8 (IIO GTS tests) also depends on the patch 1/8 (and also
other patches in the series).
Rest of the series should be Ok to be applied with/without the patches
1/8, 2/8, 5/8 - although the 5/8 would be "nice to have" together with
the rest of the series for the testability reasons.
Revision history:
v4 => v5: Mostly fixes to review comments from Andy and Jonathan.
- more accurate change-log in individual patches
- copy code from DRM test helper instead of moving it to simplify
merging
- document all exported GTS helpers.
- inline a few GTS helpers
- use again Milli lux for the bu27034 with RAW IIO_LIGHT channel and scale
- Fix bug from added in v4 bu27034 time setting.
v3 => v4: (Still mostly fixes to review comments from Andy and Jonathan)
- more accurate change-log in individual patches
- dt-binding and maintainer patches unchanged.
- dropped unused helpers and converted ones currently used only internally
to static.
- extracted "dummy device" creation helpers from DRM tests.
- added tests for devm APIs
- dropped scale for PROCESSED channel in BU27034 and converted mLux
values to luxes
- dropped channel 2 GAIN setting which can't be done due to HW
limitations.
v2 => v3: (Mostly fixes to review comments from Andy and Jonathan)
- dt-binding and maintainer patches unchanged.
- iio-gts-helper tests: Use namespaces
- iio-gts-helpers + bu27034 plenty of changes. See more comprehensive
changelog in individual patches.
RFCv1 => v2:
dt-bindings:
- Fix binding file name and id by using comma instead of a hyphen to
separate the vendor and part names.
gts-helpers:
- fix include guardian
- Improve kernel doc for iio_init_iio_gts.
- Add iio_gts_scale_to_total_gain
- Add iio_gts_total_gain_to_scale
- Fix review comments from Jonathan
- add documentation to few functions
- replace 0xffffffffffffffffLLU by U64_MAX
- some styling fixes
- drop unnecessary NULL checks
- order function arguments by in / out purpose
- drop GAIN_SCALE_ITIME_MS()
- Add helpers for available scales and times
- Rename to iio-gts-helpers
gts-tests:
- add tests for available scales/times helpers
- adapt to renamed iio-gts-helpers.h header
bu27034-driver:
- (really) protect read-only registers
- fix get and set gain
- buffered mode
- Protect the whole sequences including meas_en/meas_dis to avoid messing
up the enable / disable order
- typofixes / doc improvements
- change dropped GAIN_SCALE_ITIME_MS() to GAIN_SCALE_ITIME_US()
- use more accurate scale for lux channel (milli lux)
- provide available scales / integration times (using helpers).
- adapt to renamed iio-gts-helpers.h file
- bu27034 - longer lines in Kconfig
- Drop bu27034_meas_en and bu27034_meas_dis wrappers.
- Change device-name from bu27034-als to bu27034
MAINTAINERS:
- Add iio-list
---
Matti Vaittinen (8):
drivers: kunit: Generic helpers for test device creation
drm/tests: helpers: Use generic helpers
dt-bindings: iio: light: Support ROHM BU27034
iio: light: Add gain-time-scale helpers
iio: test: test gain-time-scale helpers
MAINTAINERS: Add IIO gain-time-scale helpers
iio: light: ROHM BU27034 Ambient Light Sensor
MAINTAINERS: Add ROHM BU27034
.../bindings/iio/light/rohm,bu27034.yaml | 46 +
MAINTAINERS | 14 +
drivers/base/test/Kconfig | 5 +
drivers/base/test/Makefile | 2 +
drivers/base/test/test_kunit_device.c | 83 +
drivers/gpu/drm/Kconfig | 2 +
.../gpu/drm/tests/drm_client_modeset_test.c | 5 +-
drivers/gpu/drm/tests/drm_kunit_helpers.c | 69 -
drivers/gpu/drm/tests/drm_managed_test.c | 5 +-
drivers/gpu/drm/tests/drm_modes_test.c | 5 +-
drivers/gpu/drm/tests/drm_probe_helper_test.c | 5 +-
drivers/gpu/drm/vc4/Kconfig | 1 +
drivers/gpu/drm/vc4/tests/vc4_mock.c | 3 +-
.../gpu/drm/vc4/tests/vc4_test_pv_muxing.c | 9 +-
drivers/iio/Kconfig | 3 +
drivers/iio/Makefile | 1 +
drivers/iio/industrialio-gts-helper.c | 1064 ++++++++++++
drivers/iio/light/Kconfig | 14 +
drivers/iio/light/Makefile | 1 +
drivers/iio/light/rohm-bu27034.c | 1482 +++++++++++++++++
drivers/iio/test/Kconfig | 14 +
drivers/iio/test/Makefile | 1 +
drivers/iio/test/iio-test-gts.c | 542 ++++++
include/drm/drm_kunit_helpers.h | 7 +-
include/kunit/platform_device.h | 13 +
include/linux/iio/iio-gts-helper.h | 206 +++
26 files changed, 3515 insertions(+), 87 deletions(-)
create mode 100644 Documentation/devicetree/bindings/iio/light/rohm,bu27034.yaml
create mode 100644 drivers/base/test/test_kunit_device.c
create mode 100644 drivers/iio/industrialio-gts-helper.c
create mode 100644 drivers/iio/light/rohm-bu27034.c
create mode 100644 drivers/iio/test/iio-test-gts.c
create mode 100644 include/kunit/platform_device.h
create mode 100644 include/linux/iio/iio-gts-helper.h
base-commit: eeac8ede17557680855031c6f305ece2378af326
--
2.39.2
--
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND
~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =]
Change the KTAP v2 spec to allow variable prefixes to KTAP lines,
instead of fixed indentation of two spaces. However, the prefix must be
constant on the same level of testing (besides unknown lines).
This was proposed by Tim Bird in 2021 and then supported by Frank Rowand
in 2022 (see link below).
Link: https://lore.kernel.org/all/bc6e9ed7-d98b-c4da-2a59-ee0915c18f10@gmail.com/
As cited in the original proposal, it is useful in some Fuego tests to
include an identifier in the prefix. This is an example:
KTAP version 1
1..2
[batch_id 4] KTAP version 1
[batch_id 4] 1..2
[batch_id 4] ok 1 cyclictest with 1000 cycles
[batch_id 4] # problem setting CLOCK_REALTIME
[batch_id 4] not ok 2 cyclictest with CLOCK_REALTIME
not ok 1 check realtime
[batch_id 4] KTAP version 1
[batch_id 4] 1..1
[batch_id 4] ok 1 IOZone read/write 4k blocks
ok 2 check I/O performance
Here is a link to a version of the KUnit parser that is able to parse
variable length prefixes for KTAP version 2. Note that the prefix must
be constant at the same level of testing.
Link: https://kunit-review.googlesource.com/c/linux/+/5710
Signed-off-by: Rae Moar <rmoar(a)google.com>
---
This idea has already been proposed but I wanted to potentially
restart the discussion by demonstrating this change can by
implemented in the KUnit parser. Let me know what you think.
Note: this patch is based on Frank's ktap_spec_version_2 branch.
Documentation/dev-tools/ktap.rst | 21 ++++++++++++++++++---
1 file changed, 18 insertions(+), 3 deletions(-)
diff --git a/Documentation/dev-tools/ktap.rst b/Documentation/dev-tools/ktap.rst
index ff77f4aaa6ef..ac61fdd97096 100644
--- a/Documentation/dev-tools/ktap.rst
+++ b/Documentation/dev-tools/ktap.rst
@@ -192,9 +192,11 @@ starting with another KTAP version line and test plan, and end with the overall
result. If one of the subtests fail, for example, the parent test should also
fail.
-Additionally, all lines in a subtest should be indented. One level of
-indentation is two spaces: " ". The indentation should begin at the version
-line and should end before the parent test's result line.
+Additionally, all lines in a subtest should be indented. The standard for one
+level of indentation is two spaces: " ". However, any prefix for indentation
+is allowed as long as the prefix is consistent throughout that level of
+testing. The indentation should begin at the version line and should end
+before the parent test's result line.
"Unknown lines" are not considered to be lines in a subtest and thus are
allowed to be either indented or not indented.
@@ -229,6 +231,19 @@ An example format with multiple levels of nested testing:
not ok 1 example_test_1
ok 2 example_test_2
+An example of a test with two nested subtests using prefixes:
+
+::
+
+ KTAP version 2
+ 1..1
+ [prefix_1] KTAP version 2
+ [prefix_1] 1..2
+ [prefix_1] ok 1 test_1
+ [prefix_1] ok 2 test_2
+ # example passed
+ ok 1 example
+
Major differences between TAP and KTAP
--------------------------------------
base-commit: 906f02e42adfbd5ae70d328ee71656ecb602aaf5
--
2.40.0.rc1.284.g88254d51c5-goog
Add recognition of the test name line ("# Subtest: <name>") to the KTAP v2
spec.
The purpose of this line is to declare the name of a test before its
results. This functionality is especially useful when trying to parse test
results incrementally and when interpretting results after a crash.
This line is already compliant with KTAP v1 as it is interpretted as a
diagnostic line by parsers. Additionally, the line is currently used by
KUnit tests and was derived from the TAP 14 spec:
https://testanything.org/tap-version-14-specification.html.
Recognition of this line would create an accepted way for different test
frameworks to declare the name of a test before its results.
The proposed location for this line is between the version line and the
test plan line. This location ensures that the line would not be
accidentally parsed as a subtest's diagnostic lines. Note this proposed
location would be a slight differentiation from KTAP v1.
Example of test name line:
KTAP version 2
# Subtest: main_test
1..1
KTAP version 2
# Subtest: sub_test
1..2
ok 1 test_1
ok 2 test_2
ok 1 sub_test
Here is a link to a version of the KUnit parser that is able to parse the
test name line for KTAP version 2. Note this includes a test name line for
the main level of KTAP.
Link: https://kunit-review.googlesource.com/c/linux/+/5709
Signed-off-by: Rae Moar <rmoar(a)google.com>
---
This is a RFC. I would like to know what people think and use this as a
platform for discussion on KTAP v2.
Note: this patch is based on Frank's ktap_spec_version_2 branch.
Documentation/dev-tools/ktap.rst | 19 ++++++++++++++-----
1 file changed, 14 insertions(+), 5 deletions(-)
diff --git a/Documentation/dev-tools/ktap.rst b/Documentation/dev-tools/ktap.rst
index ff77f4aaa6ef..9c7ed66d9f77 100644
--- a/Documentation/dev-tools/ktap.rst
+++ b/Documentation/dev-tools/ktap.rst
@@ -28,8 +28,7 @@ KTAP output is built from four different types of lines:
In general, valid KTAP output should also form valid TAP output, but some
information, in particular nested test results, may be lost. Also note that
there is a stagnant draft specification for TAP14, KTAP diverges from this in
-a couple of places (notably the "Subtest" header), which are described where
-relevant later in this document.
+a couple of places, which are described where relevant later in this document.
Version lines
-------------
@@ -44,8 +43,8 @@ For example:
- "TAP version 14"
Note that, in KTAP, subtests also begin with a version line, which denotes the
-start of the nested test results. This differs from TAP14, which uses a
-separate "Subtest" line.
+start of the nested test results. This differs from TAP14, which uses only a
+"Subtest" line.
While, going forward, "KTAP version 2" should be used by compliant tests, it
is expected that most parsers and other tooling will accept the other versions
@@ -166,6 +165,12 @@ even if they do not start with a "#": this is to capture any other useful
kernel output which may help debug the test. It is nevertheless recommended
that tests always prefix any diagnostic output they have with a "#" character.
+One recognized diagnostic line is the "# Subtest: <name>" line. This line
+is used to declare the name of a test before subtest results are printed. This
+is helpful for parsing and for providing context during crashes. As a rule,
+this line is placed after the version line and before the plan line. Note
+this line can be used for the main test, as well as subtests.
+
Unknown lines
-------------
@@ -206,6 +211,7 @@ An example of a test with two nested subtests:
KTAP version 2
1..1
KTAP version 2
+ # Subtest: example
1..2
ok 1 test_1
not ok 2 test_2
@@ -219,6 +225,7 @@ An example format with multiple levels of nested testing:
KTAP version 2
1..2
KTAP version 2
+ # Subtest: example_test_1
1..2
KTAP version 2
1..2
@@ -245,7 +252,7 @@ allows an arbitrary number of tests to be nested no yes
The TAP14 specification does permit nested tests, but instead of using another
nested version line, uses a line of the form
-"Subtest: <name>" where <name> is the name of the parent test.
+"Subtest: <name>" where <name> is the name of the parent test as discussed above.
Example KTAP output
--------------------
@@ -254,6 +261,7 @@ Example KTAP output
KTAP version 2
1..1
KTAP version 2
+ # Subtest: main_test
1..3
KTAP version 2
1..1
@@ -266,6 +274,7 @@ Example KTAP output
ok 2 test_2
ok 2 example_test_2
KTAP version 2
+ # Subtest: example_test_3
1..3
ok 1 test_1
# test_2: FAIL
base-commit: 906f02e42adfbd5ae70d328ee71656ecb602aaf5
--
2.40.0.rc1.284.g88254d51c5-goog
On Fri, Mar 31, 2023 at 8:05 AM kernel test robot <yujie.liu(a)intel.com> wrote:
>
> Hello,
>
> kernel test robot noticed kernel-selftests.memfd.run_fuse_test.sh.fail due to commit (built with gcc-11):
>
> commit: 11f75a01448f1b7a739e75dbd8f17b844fcfc510 ("selftests/memfd: add tests for MFD_NOEXEC_SEAL MFD_EXEC")
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
>
> in testcase: kernel-selftests
> version: kernel-selftests-x86_64-d4cf28ee-1_20230110
> with following parameters:
>
> group: group-02
>
> test-description: The kernel contains a set of "self tests" under the tools/testing/selftests/ directory. These are intended to be small unit tests to exercise individual code paths in the kernel.
> test-url: https://www.kernel.org/doc/Documentation/kselftest.txt
>
> on test machine: 4 threads Intel(R) Xeon(R) CPU E3-1225 v5 @ 3.30GHz (Skylake) with 16G memory
>
> caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
>
>
> # selftests: memfd: run_fuse_test.sh
> # Aborted
> not ok 2 selftests: memfd: run_fuse_test.sh # exit=134
>
> $ ./run_fuse_test.sh
> opening: ./mnt/memfd
> 8 != 40 = GET_SEALS(4)
> Aborted
Hi Jeff,
I think this is caused by test_sysctl() in memfd_test, which sets
/proc/sys/vm/memfd_noexec to a non-zero value and does not restore it
at the end of the test. If fuse_test runs after that, it will
unexpectedly get F_SEAL_EXEC in its memfd seals in addition to the
F_SEAL_WRITE that it intended to add.
I'm not sure how kernel selftests normally perform cleanup (e.g. an
atexit() hook to make sure it cleans up if a test fails?), but at
least we should probably set /proc/sys/vm/memfd_noexec back to its
original value after test_sysctl().
Thanks,
-- Daniel
The fork function in gcc is considered a built in function due to
being used by libgcov when building with gnu extensions.
Rename fork to sched_process_fork to prevent this conflict.
See details:
https://github.com/gcc-mirror/gcc/commit/d1c38823924506d389ca58d02926ace21b…https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82457
Fixes the following error:
In file included from progs/bench_local_storage_create.c:6:
progs/bench_local_storage_create.c:43:14: error: conflicting types for
built-in function 'fork'; expected 'int(void)'
[-Werror=builtin-declaration-mismatch]
43 | int BPF_PROG(fork, struct task_struct *parent, struct
task_struct *child)
| ^~~~
Fixes: cbe9d93d58b1 ("selftests/bpf: Add bench for task storage creation")
Signed-off-by: James Hilliard <james.hilliard1(a)gmail.com>
Cc: Martin KaFai Lau <martin.lau(a)kernel.org>
---
tools/testing/selftests/bpf/benchs/bench_local_storage_create.c | 2 +-
tools/testing/selftests/bpf/progs/bench_local_storage_create.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/bpf/benchs/bench_local_storage_create.c b/tools/testing/selftests/bpf/benchs/bench_local_storage_create.c
index abb0321d4f34..cff703f90e95 100644
--- a/tools/testing/selftests/bpf/benchs/bench_local_storage_create.c
+++ b/tools/testing/selftests/bpf/benchs/bench_local_storage_create.c
@@ -95,7 +95,7 @@ static void setup(void)
exit(1);
}
} else {
- if (!bpf_program__attach(skel->progs.fork)) {
+ if (!bpf_program__attach(skel->progs.sched_process_fork)) {
fprintf(stderr, "Error attaching bpf program\n");
exit(1);
}
diff --git a/tools/testing/selftests/bpf/progs/bench_local_storage_create.c b/tools/testing/selftests/bpf/progs/bench_local_storage_create.c
index 7c851c9d5e47..e4bfbba6c193 100644
--- a/tools/testing/selftests/bpf/progs/bench_local_storage_create.c
+++ b/tools/testing/selftests/bpf/progs/bench_local_storage_create.c
@@ -40,7 +40,7 @@ int BPF_PROG(kmalloc, unsigned long call_site, const void *ptr,
}
SEC("tp_btf/sched_process_fork")
-int BPF_PROG(fork, struct task_struct *parent, struct task_struct *child)
+int BPF_PROG(sched_process_fork, struct task_struct *parent, struct task_struct *child)
{
struct storage *stg;
--
2.34.1
Commit 65b32f801bfb ("uapi: move IPPROTO_L2TP to in.h") moved the
definition of IPPROTO_L2TP from a define to an enum, but since
__stringify doesn't work properly with enums, we ended up breaking the
modalias strings for the l2tp modules:
$ modinfo l2tp_ip l2tp_ip6 | grep alias
alias: net-pf-2-proto-IPPROTO_L2TP
alias: net-pf-2-proto-2-type-IPPROTO_L2TP
alias: net-pf-10-proto-IPPROTO_L2TP
alias: net-pf-10-proto-2-type-IPPROTO_L2TP
Use the resolved number directly in MODULE_ALIAS_*() macros (as we
already do with SOCK_DGRAM) to fix the alias strings:
$ modinfo l2tp_ip l2tp_ip6 | grep alias
alias: net-pf-2-proto-115
alias: net-pf-2-proto-115-type-2
alias: net-pf-10-proto-115
alias: net-pf-10-proto-115-type-2
Moreover, fix the ordering of the parameters passed to
MODULE_ALIAS_NET_PF_PROTO_TYPE() by switching proto and type.
Fixes: 65b32f801bfb ("uapi: move IPPROTO_L2TP to in.h")
Link: https://lore.kernel.org/lkml/ZCQt7hmodtUaBlCP@righiandr-XPS-13-7390
Signed-off-by: Guillaume Nault <gnault(a)redhat.com>
Signed-off-by: Andrea Righi <andrea.righi(a)canonical.com>
---
net/l2tp/l2tp_ip.c | 8 ++++----
net/l2tp/l2tp_ip6.c | 8 ++++----
2 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c
index 4db5a554bdbd..41a74fc84ca1 100644
--- a/net/l2tp/l2tp_ip.c
+++ b/net/l2tp/l2tp_ip.c
@@ -677,8 +677,8 @@ MODULE_AUTHOR("James Chapman <jchapman(a)katalix.com>");
MODULE_DESCRIPTION("L2TP over IP");
MODULE_VERSION("1.0");
-/* Use the value of SOCK_DGRAM (2) directory, because __stringify doesn't like
- * enums
+/* Use the values of SOCK_DGRAM (2) as type and IPPROTO_L2TP (115) as protocol,
+ * because __stringify doesn't like enums
*/
-MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_INET, 2, IPPROTO_L2TP);
-MODULE_ALIAS_NET_PF_PROTO(PF_INET, IPPROTO_L2TP);
+MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_INET, 115, 2);
+MODULE_ALIAS_NET_PF_PROTO(PF_INET, 115);
diff --git a/net/l2tp/l2tp_ip6.c b/net/l2tp/l2tp_ip6.c
index 2478aa60145f..5137ea1861ce 100644
--- a/net/l2tp/l2tp_ip6.c
+++ b/net/l2tp/l2tp_ip6.c
@@ -806,8 +806,8 @@ MODULE_AUTHOR("Chris Elston <celston(a)katalix.com>");
MODULE_DESCRIPTION("L2TP IP encapsulation for IPv6");
MODULE_VERSION("1.0");
-/* Use the value of SOCK_DGRAM (2) directory, because __stringify doesn't like
- * enums
+/* Use the values of SOCK_DGRAM (2) as type and IPPROTO_L2TP (115) as protocol,
+ * because __stringify doesn't like enums
*/
-MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_INET6, 2, IPPROTO_L2TP);
-MODULE_ALIAS_NET_PF_PROTO(PF_INET6, IPPROTO_L2TP);
+MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_INET6, 115, 2);
+MODULE_ALIAS_NET_PF_PROTO(PF_INET6, 115);
--
2.39.2
Sorry for the delay in this update.
Changes from v1:
* Improve the skip message along with the changelog massage (Suah Khan).
* Simplify the feature support check (Suah Khan).
=== Cover Letter ===
A couple of test updates are included:
* With the STRICT_SIGALTSTACK_SIZE option [1,2], the kernel's altstack
check becomes stringent. The x86 sigaltstack test is ignorant about this.
Adjust the test now. This check was established [3] to ensure every AMX
task's altstack is sufficient (regardless of that option) [4].
* The AMX test wrongly fails on non-AMX machines. Fix the code to skip the
test instead.
The series is available in this repository:
git://github.com/intel/amx-linux.git selftest
[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arc…
[2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Doc…
[3] 3aac3ebea08f ("x86/signal: Implement sigaltstack size validation")
[4] 4b7ca609a33d ("x86/signal: Use fpu::__state_user_size for sigalt stack validation")
Chang S. Bae (2):
selftests/x86/signal: Adjust the test to the kernel's altstack check
selftests/x86/amx: Fix the test to avoid failure when AMX is
unavailable
tools/testing/selftests/x86/amx.c | 31 ++++++++---------------
tools/testing/selftests/x86/sigaltstack.c | 14 +++++++++-
2 files changed, 23 insertions(+), 22 deletions(-)
base-commit: 32346491ddf24599decca06190ebca03ff9de7f8
--
2.17.1
Hi Oliver,
Here is a respin of the KVM selftests fixes, with your nits addressed; I've
fixed the footer whitespace issue and I'm now using FIELD_GET() in the place
where you suggested and a couple of other places too. I've also included the 3rd
patch in this series (the ttbr0_el1 fix), which I originally sent separately -
this is now using FIELD_GET() too.
So this series superceeds [1] and [2].
Thanks,
Ryan
[1] https://lore.kernel.org/kvmarm/e8ed178a-0c67-3e00-a085-1d88fb3cb41f@arm.com/
[2] https://lore.kernel.org/kvmarm/20230302152033.242073-1-ryan.roberts@arm.com/
Ryan Roberts (3):
KVM: selftests: Fixup config fragment for access_tracking_perf_test
KVM: selftests: arm64: Fix pte encode/decode for PA bits > 48
KVM: selftests: arm64: Fix ttbr0_el1 encoding for PA bits > 48
tools/testing/selftests/kvm/config | 1 +
.../selftests/kvm/lib/aarch64/processor.c | 39 ++++++++++++++-----
2 files changed, 30 insertions(+), 10 deletions(-)
--
2.25.1
There's a rule to ignore all the dot-files (.*) but we want to exclude the
config files used by KUnit (.kunitconfig) since those are usually added to
allow executing test suites without having to enable custom config symbols.
Signed-off-by: Javier Martinez Canillas <javierm(a)redhat.com>
---
.gitignore | 1 +
1 file changed, 1 insertion(+)
diff --git a/.gitignore b/.gitignore
index 70ec6037fa7a..7f86e0837909 100644
--- a/.gitignore
+++ b/.gitignore
@@ -103,6 +103,7 @@ modules.order
!.get_maintainer.ignore
!.gitattributes
!.gitignore
+!.kunitconfig
!.mailmap
!.rustfmt.toml
base-commit: ffe78bbd512166e0ef1cc4858010b128c510ed7d
--
2.40.0
Support ROHM BU27034 ALS sensor
This series adds support for ROHM BU27034 Ambient Light Sensor.
The BU27034 has configurable gain and measurement (integration) time
settings. Both of these have inversely proportional relation to the
sensor's intensity channel scale.
Many users only set the scale, which means that many drivers attempt to
'guess' the best gain+time combination to meet the scale. Usually this
is the biggest integration time which allows setting the requested
scale. Typically, increasing the integration time has better accuracy
than increasing the gain, which often amplifies the noise as well as the
real signal.
However, there may be cases where more responsive sensors are needed.
So, in some cases the longest integration times may not be what the user
prefers. The driver has no way of knowing this.
Hence, the approach taken by this series is to allow user to set both
the scale and the integration time with following logic:
1. When scale is set, the existing integration time is tried to be
maintained as a first priority.
1a) If the requested scale can't be met by current time, then also
other time + gain combinations are searched. If scale can be met
by some other integration time, then the new time may be applied.
If the time setting is common for all channels, then also other
channels must be able to maintain their scale with this new time
(by changing their gain). The new times are scanned in the order
of preference (typically the longest times first).
1b) If the requested scale can be met using current time, then only
the gain for the channel is changed.
2. When the integration time change - scale is tried to be maintained.
When integration time change is requested also gain for all impacted
channels is adjusted so that the scale is not changed, or is chaned
as little as possible. This is different from the RFCv1 where the
request was rejected if suitable gain couldn't be found for some
channel(s).
This logic is simple. When total gain (either caused by time or hw-gain)
is doubled, the scale gets halved. Also, the supported times are given a
'multiplier' value which tells how much they increase the total gain.
However, when I wrote this logic in bu27034 driver, I made quite a few
errors on the way - and driver got pretty big. As I am writing drivers
for two other sensors (RGB C/IR + flicker BU27010 and RGB C/IR BU27008)
with similar gain-time-scale logic I thought that adding common helpers
for these computations might be wise. I hope this way all the bugs will
be concentrated in one place and not in every individual driver ;)
Hence, this series also intriduces IIO gain-time-scale helpers
(abbreviated as gts-helpers) + a couple of KUnit tests for the most
hairy parts.
Speaking of which - testing the devm interfaces requires a 'dummy
device'. I've learned that there has been at least two ways of handling
this kind of a dependecy.
1) Using a root_device_[un]register() functions (with or without a
wrapper)
2) Using dummy platform_device.
Way 2) is seen as abusing platform_devices to something they should not
be used.
Way 1) is also seen sub-optimal - and after a discussion a 'kunit dummy
device' is being worked on by David Gow:
https://lore.kernel.org/linux-kselftest/20230325043104.3761770-1-davidgow@g…
David's work relies on not yet in-tree kunit deferring API. Schedule for
this work is - as always in case of upstream development - unkonwn. In
order to be self-contained while still easily 'fixable when David's work
is completed' this series introduces warappers named similar to what was
suggested by david - and which are intended to have similar behaviour
(automatic clean-up upon test completion). These wrappers do still use
root-device APIs underneath but this should be fixed by David's work.
Finally, these added helpers do provide some value also for drivers
which only:
a) allow gain change
or
b) allow changing both the time and gain while trying to maintain the
scale.
For a) we provide the gain - selector (register value) table format +
selector to gain look-ups, gain <-> scale conversions and the available
scales helpers.
For latter case we also provide the time-tables, and actually all the
APIs should be usable by setting the time multiplier to 1. (not testeted
thoroughly though).
The patch 1/7 introduces the helpers for creating/dropping a test device
for devm-tests. It can be applied alone.
The patch 4/7 (IIO GTS tests) also depends on the patch 1/7 (and also
other patches in the series).
Rest of the series should be Ok to be applied with/without the patches
1/7 and 4/7 - although the 4/7 (which depends on 1/7) would be "nice to
have" together with the rest of the series for the testability reasons.
Revision history:
v5 => v6:
- Just a minor fixes in iio-gts-helpers and bu27034 driver.
- Kunit device helper for a test device creation.
- IIO GTS tests use kunit device helper.
v4 => v5: Mostly fixes to review comments from Andy and Jonathan.
- more accurate change-log in individual patches
- copy code from DRM test helper instead of moving it to simplify
merging
- document all exported GTS helpers.
- inline a few GTS helpers
- use again Milli lux for the bu27034 with RAW IIO_LIGHT channel and scale
- Fix bug from added in v4 bu27034 time setting.
v3 => v4: (Still mostly fixes to review comments from Andy and Jonathan)
- more accurate change-log in individual patches
- dt-binding and maintainer patches unchanged.
- dropped unused helpers and converted ones currently used only internally
to static.
- extracted "dummy device" creation helpers from DRM tests.
- added tests for devm APIs
- dropped scale for PROCESSED channel in BU27034 and converted mLux
values to luxes
- dropped channel 2 GAIN setting which can't be done due to HW
limitations.
v2 => v3: (Mostly fixes to review comments from Andy and Jonathan)
- dt-binding and maintainer patches unchanged.
- iio-gts-helper tests: Use namespaces
- iio-gts-helpers + bu27034 plenty of changes. See more comprehensive
changelog in individual patches.
RFCv1 => v2:
dt-bindings:
- Fix binding file name and id by using comma instead of a hyphen to
separate the vendor and part names.
gts-helpers:
- fix include guardian
- Improve kernel doc for iio_init_iio_gts.
- Add iio_gts_scale_to_total_gain
- Add iio_gts_total_gain_to_scale
- Fix review comments from Jonathan
- add documentation to few functions
- replace 0xffffffffffffffffLLU by U64_MAX
- some styling fixes
- drop unnecessary NULL checks
- order function arguments by in / out purpose
- drop GAIN_SCALE_ITIME_MS()
- Add helpers for available scales and times
- Rename to iio-gts-helpers
gts-tests:
- add tests for available scales/times helpers
- adapt to renamed iio-gts-helpers.h header
bu27034-driver:
- (really) protect read-only registers
- fix get and set gain
- buffered mode
- Protect the whole sequences including meas_en/meas_dis to avoid messing
up the enable / disable order
- typofixes / doc improvements
- change dropped GAIN_SCALE_ITIME_MS() to GAIN_SCALE_ITIME_US()
- use more accurate scale for lux channel (milli lux)
- provide available scales / integration times (using helpers).
- adapt to renamed iio-gts-helpers.h file
- bu27034 - longer lines in Kconfig
- Drop bu27034_meas_en and bu27034_meas_dis wrappers.
- Change device-name from bu27034-als to bu27034
MAINTAINERS:
- Add iio-list
---
Matti Vaittinen (7):
dt-bindings: iio: light: Support ROHM BU27034
iio: light: Add gain-time-scale helpers
kunit: Add kunit wrappers for (root) device creation
iio: test: test gain-time-scale helpers
MAINTAINERS: Add IIO gain-time-scale helpers
iio: light: ROHM BU27034 Ambient Light Sensor
MAINTAINERS: Add ROHM BU27034
.../bindings/iio/light/rohm,bu27034.yaml | 46 +
MAINTAINERS | 14 +
drivers/iio/Kconfig | 3 +
drivers/iio/Makefile | 1 +
drivers/iio/industrialio-gts-helper.c | 1057 ++++++++++++
drivers/iio/light/Kconfig | 14 +
drivers/iio/light/Makefile | 1 +
drivers/iio/light/rohm-bu27034.c | 1496 +++++++++++++++++
drivers/iio/test/Kconfig | 14 +
drivers/iio/test/Makefile | 1 +
drivers/iio/test/iio-test-gts.c | 517 ++++++
include/kunit/device.h | 18 +
include/linux/iio/iio-gts-helper.h | 206 +++
lib/kunit/Makefile | 3 +-
lib/kunit/device.c | 36 +
15 files changed, 3426 insertions(+), 1 deletion(-)
create mode 100644 Documentation/devicetree/bindings/iio/light/rohm,bu27034.yaml
create mode 100644 drivers/iio/industrialio-gts-helper.c
create mode 100644 drivers/iio/light/rohm-bu27034.c
create mode 100644 drivers/iio/test/iio-test-gts.c
create mode 100644 include/kunit/device.h
create mode 100644 include/linux/iio/iio-gts-helper.h
create mode 100644 lib/kunit/device.c
base-commit: eeac8ede17557680855031c6f305ece2378af326
--
2.39.2
--
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND
~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =]
This series provides some initial KUnit coverage for regmap,
covering most of the interfaces that operate at the register
level using an instrumented RAM backed bus type.
Without the current regmap tree the paging tests will fail as the
RAM backed regmap doesn't support the required operations.
Changes in v2:
- Add a test for regcache_drop_region().
- Add a stress test for inserting registers into a sparse cache.
- Link to v1: https://lore.kernel.org/r/20230324-regmap-kunit-v1-0-62ef9cfa9b89@kernel.org
Signed-off-by: Mark Brown <broonie(a)kernel.org>
---
Mark Brown (2):
regmap: Add RAM backed register map
regmap: Add some basic kunit tests
drivers/base/regmap/Kconfig | 10 +
drivers/base/regmap/Makefile | 2 +
drivers/base/regmap/internal.h | 19 +
drivers/base/regmap/regmap-kunit.c | 736 +++++++++++++++++++++++++++++++++++++
drivers/base/regmap/regmap-ram.c | 85 +++++
5 files changed, 852 insertions(+)
---
base-commit: e8d018dd0257f744ca50a729e3d042cf2ec9da65
change-id: 20230324-regmap-kunit-bb3c3e81e35c
Best regards,
--
Mark Brown <broonie(a)kernel.org>
This series provides some initial KUnit coverage for regmap,
covering most of the interfaces that operate at the register
level using an instrumented RAM backed bus type.
Signed-off-by: Mark Brown <broonie(a)kernel.org>
---
Mark Brown (2):
regmap: Add RAM backed register map
regmap: Add some basic kunit tests
drivers/base/regmap/Kconfig | 10 +
drivers/base/regmap/Makefile | 2 +
drivers/base/regmap/internal.h | 19 ++
drivers/base/regmap/regmap-kunit.c | 631 +++++++++++++++++++++++++++++++++++++
drivers/base/regmap/regmap-ram.c | 85 +++++
5 files changed, 747 insertions(+)
---
base-commit: e8d018dd0257f744ca50a729e3d042cf2ec9da65
change-id: 20230324-regmap-kunit-bb3c3e81e35c
Best regards,
--
Mark Brown <broonie(a)kernel.org>
I noticed that l2tp.sh net selftest is failing in recent kernels with
the following error:
RTNETLINK answers: Protocol not supported
See also: https://bugs.launchpad.net/bugs/2013014
Apprently the module lt2p_ipv6 is not automatically loaded when the test
is trying to create an l2tp ipv6 tunnel.
I did a bisect and found that the offending commit is this one:
65b32f801bfb ("uapi: move IPPROTO_L2TP to in.h")
I've temporarily reverted this commit for now, any suggestion on how to
fix this properly?
Thanks,
-Andrea
Hi all,
This is a follow-up to the conversation[1] about adding helpers to create a
struct device for use in KUnit tests. At the moment, most tests are
using root_device_register(), which doesn't quite fit, and a few are
using platform_devices instead.
This adds a KUnit-specific equivalent: kunit_device_register(), which
creates a device which will be automatically cleaned up on test exit
(such as, for example, if an assertion fails).
It's also possible to unregister it earlier with
kunit_device_unregister().
This can replace the root_device_register() users pretty comfortably,
though doesn't resolve the issue with devm_ resources not being released
properly as laid out in [2]. Updating the implementation here to use a
'kunit' bus should, I think, be reasonably straightforward.
The first patch in the series is an in-progress implementation of a
separate new 'kunit_defer()' API, upon which this device implementation
is built.
If the overall idea seems good, I'll make sure to add better
tests/documentation, and patches converting existing tests to this API.
Cheers,
-- David
[1]: https://lore.kernel.org/linux-kselftest/bad670ee135391eb902bd34b8bcbe777afa…
[2]: https://lore.kernel.org/linux-kselftest/20230324123157.bbwvfq4gsxnlnfwb@hou…
---
David Gow (2):
kunit: resource: Add kunit_defer() functionality
kunit: Add APIs for managing devices
include/kunit/device.h | 25 +++++++++
include/kunit/resource.h | 87 +++++++++++++++++++++++++++++++
lib/kunit/Makefile | 1 +
lib/kunit/device.c | 68 ++++++++++++++++++++++++
lib/kunit/resource.c | 110 +++++++++++++++++++++++++++++++++++++++
5 files changed, 291 insertions(+)
create mode 100644 include/kunit/device.h
create mode 100644 lib/kunit/device.c
--
2.40.0.348.gf938b09366-goog
This is the basic functionality for iommufd to support
iommufd_device_replace() and IOMMU_HWPT_ALLOC for physical devices.
iommufd_device_replace() allows changing the HWPT associated with the
device to a new IOAS or HWPT. Replace does this in way that failure leaves
things unchanged, and utilizes the iommu iommu_group_replace_domain() API
to allow the iommu driver to perform an optional non-disruptive change.
IOMMU_HWPT_ALLOC allows HWPTs to be explicitly allocated by the user and
used by attach or replace. At this point it isn't very useful since the
HWPT is the same as the automatically managed HWPT from the IOAS. However
a following series will allow userspace to customize the created HWPT.
The implementation is complicated because we have to introduce some
per-iommu_group memory in iommufd and redo how we think about multi-device
groups to be more explicit. This solves all the locking problems in the
prior attempts.
This series is infrastructure work for the following series which:
- Add replace for attach
- Expose replace through VFIO APIs
- Implement driver parameters for HWPT creation (nesting)
Once review of this is complete I will keep it on a side branch and
accumulate the following series when they are ready so we can have a
stable base and make more incremental progress. When we have all the parts
together to get a full implementation it can go to Linus.
This is on github: https://github.com/jgunthorpe/linux/commits/iommufd_hwpt
v4:
- Refine comments and commit messages
- Move the group lock into iommufd_hw_pagetable_attach()
- Fix error unwind in iommufd_device_do_replace()
v3: https://lore.kernel.org/r/0-v3-61d41fd9e13e+1f5-iommufd_alloc_jgg@nvidia.com
- Refine comments and commit messages
- Adjust the flow in iommufd_device_auto_get_domain() so pt_id is only
set on success
- Reject replace on non-attached devices
- Add missing __reserved check for IOMMU_HWPT_ALLOC
v2: https://lore.kernel.org/r/0-v2-51b9896e7862+8a8c-iommufd_alloc_jgg@nvidia.c…
- Use WARN_ON for the igroup->group test and move that logic to a
function iommufd_group_try_get()
- Change igroup->devices to igroup->device list
Replace will need to iterate over all attached idevs
- Rename to iommufd_group_setup_msi()
- New patch to export iommu_get_resv_regions()
- New patch to use per-device reserved regions instead of per-group
regions
- Split out the reorganizing of iommufd_device_change_pt() from the
replace patch
- Replace uses the per-dev reserved regions
- Use stdev_id in a few more places in the selftest
- Fix error handling in IOMMU_HWPT_ALLOC
- Clarify comments
- Rebase on v6.3-rc1
v1: https://lore.kernel.org/all/0-v1-7612f88c19f5+2f21-iommufd_alloc_jgg@nvidia…
Jason Gunthorpe (15):
iommufd: Move isolated msi enforcement to iommufd_device_bind()
iommufd: Add iommufd_group
iommufd: Replace the hwpt->devices list with iommufd_group
iommu: Export iommu_get_resv_regions()
iommufd: Keep track of each device's reserved regions instead of
groups
iommufd: Use the iommufd_group to avoid duplicate MSI setup
iommufd: Make sw_msi_start a group global
iommufd: Move putting a hwpt to a helper function
iommufd: Add enforced_cache_coherency to iommufd_hw_pagetable_alloc()
iommufd: Reorganize iommufd_device_attach into
iommufd_device_change_pt
iommufd: Add iommufd_device_replace()
iommufd: Make destroy_rwsem use a lock class per object type
iommufd: Add IOMMU_HWPT_ALLOC
iommufd/selftest: Return the real idev id from selftest mock_domain
iommufd/selftest: Add a selftest for IOMMU_HWPT_ALLOC
Nicolin Chen (2):
iommu: Introduce a new iommu_group_replace_domain() API
iommufd/selftest: Test iommufd_device_replace()
drivers/iommu/iommu-priv.h | 10 +
drivers/iommu/iommu.c | 41 +-
drivers/iommu/iommufd/device.c | 523 +++++++++++++-----
drivers/iommu/iommufd/hw_pagetable.c | 96 +++-
drivers/iommu/iommufd/io_pagetable.c | 27 +-
drivers/iommu/iommufd/iommufd_private.h | 51 +-
drivers/iommu/iommufd/iommufd_test.h | 6 +
drivers/iommu/iommufd/main.c | 17 +-
drivers/iommu/iommufd/selftest.c | 40 ++
include/linux/iommufd.h | 1 +
include/uapi/linux/iommufd.h | 26 +
tools/testing/selftests/iommu/iommufd.c | 64 ++-
.../selftests/iommu/iommufd_fail_nth.c | 52 +-
tools/testing/selftests/iommu/iommufd_utils.h | 61 +-
14 files changed, 810 insertions(+), 205 deletions(-)
create mode 100644 drivers/iommu/iommu-priv.h
base-commit: fd8c1a4aee973e87d890a5861e106625a33b2c4e
--
2.40.0
v2:
- Add a new patch 1 that fixes a bug introduced by recent v6.2 commit
7a2127e66a00 ("cpuset: Call set_cpus_allowed_ptr() with appropriate
mask for task").
- Make a small twist and additional comment to patch 2 ("cgroup/cpuset:
Skip task update if hotplug doesn't affect current cpuset") as
suggested by Michal.
- Remove v1 patches 3/4 for now for further discussion.
This patch series includes miscellaneous update to the cpuset and its
testing code.
Patch 1 fixes a bug caused by commit 7a2127e66a00 ("cpuset: Call
set_cpus_allowed_ptr() with appropriate mask for task") in the partition
handling code. This fix was verified by running the test_cpuset_prs.sh
test.
Patch 2 is for a hotplug optimization.
Patch 3 is actually a follow-up of commit 3fb906e7fabb ("cgroup/cpuset:
Don't filter offline CPUs in cpuset_cpus_allowed() for top cpuset tasks").
Patch 4 reduces verbosity when running test_cpuset_prs.sh test script
unless explicitly enabled with the -v option.
Waiman Long (4):
cgroup/cpuset: Fix partition root's cpuset.cpus update bug
cgroup/cpuset: Skip task update if hotplug doesn't affect current
cpuset
cgroup/cpuset: Include offline CPUs when tasks' cpumasks in top_cpuset
are updated
cgroup/cpuset: Minor updates to test_cpuset_prs.sh
kernel/cgroup/cpuset.c | 38 +++++++++++++------
.../selftests/cgroup/test_cpuset_prs.sh | 25 ++++++------
2 files changed, 41 insertions(+), 22 deletions(-)
--
2.31.1