July 2024 - Linux-kselftest-mirror

[PATCH v2 0/4] Introduce userspace-driven ALSA timers

by Ivan Orlov

There are multiple possible timer sources which could be useful for the sound stream synchronization: hrtimers, hardware clocks (e.g. PTP), timer wheels (jiffies). Currently, using one of them to synchronize the audio stream of snd-aloop module would require writing a kernel-space driver which exports an ALSA timer through the snd_timer interface. However, it is not really convenient for application developers, who may want to define their custom timer sources for audio synchronization. For instance, we could have a network application which receives frames and sends them to snd-aloop pcm device, and another application listening on the other end of snd-aloop. It makes sense to transfer a new period of data only when certain amount of frames is received through the network, but definitely not when a certain amount of jiffies on a local system elapses. Since all of the devices are purely virtual it won't introduce any glitches and will help the application developers to avoid using sample-rate conversion. This patch series introduces userspace-driven ALSA timers: virtual timers which are created and controlled from userspace. The timer can be created from the userspace using the new ioctl SNDRV_TIMER_IOCTL_CREATE. After creating a timer, it becomes available for use system-wide, so it can be passed to snd-aloop as a timer source (timer_source parameter would be "-1.SNDRV_TIMER_GLOBAL_UDRIVEN.{timer_id}"). When the userspace app decides to trigger a timer, it calls another ioctl SNDRV_TIMER_IOCTL_TRIGGER on the file descriptor of a timer. It initiates a transfer of a new period of data. Userspace-driven timers are associated with file descriptors. If the application wishes to destroy the timer, it can simply release the file descriptor of a virtual timer. I believe introducing new ioctl calls is quite inconvenient (as we have a limited amount of them), but other possible ways of app <-> kernel communication (like virtual FS) seem completely inappropriate for this task (but I'd love to discuss alternative solutions). This patch series also updates the snd-aloop module so the global timers can be used as a timer_source for it (it allows using userspace-driven timers as timer source). V2 of this patch series fixes some problems found by Christophe Jaillet <christophe.jaillet(a)wanadoo.fr>. Please, find the patch-specific changelog in the following patches. Ivan Orlov (4): ALSA: aloop: Allow using global timers Docs/sound: Add documentation for userspace-driven ALSA timers ALSA: timer: Introduce virtual userspace-driven timers selftests: ALSA: Cover userspace-driven timers with test Documentation/sound/index.rst | 1 + Documentation/sound/utimers.rst | 120 +++++++++++ include/uapi/sound/asound.h | 17 ++ sound/core/Kconfig | 10 + sound/core/timer.c | 213 ++++++++++++++++++++ sound/drivers/aloop.c | 2 + tools/testing/selftests/alsa/Makefile | 2 +- tools/testing/selftests/alsa/global-timer.c | 87 ++++++++ tools/testing/selftests/alsa/utimer-test.c | 137 +++++++++++++ 9 files changed, 588 insertions(+), 1 deletion(-) create mode 100644 Documentation/sound/utimers.rst create mode 100644 tools/testing/selftests/alsa/global-timer.c create mode 100644 tools/testing/selftests/alsa/utimer-test.c -- 2.34.1

2 months, 1 week

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kselftest/next build: 7 builds: 2 failed, 5 passed, 1 warning (v6.11-rc1)

by kernelci.org bot

kselftest/next build: 7 builds: 2 failed, 5 passed, 1 warning (v6.11-rc1) Full Build Summary: https://kernelci.org/build/kselftest/branch/next/kernel/v6.11-rc1/ Tree: kselftest Branch: next Git Describe: v6.11-rc1 Git Commit: 8400291e289ee6b2bf9779ff1c83a291501f017b Git URL: https://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git Built: 4 unique architectures Build Failures Detected: arm64: defconfig+kselftest+arm64-chromebook: (clang-16) FAIL defconfig+kselftest+arm64-chromebook: (gcc-12) FAIL Warnings Detected: arm64: arm: i386: x86_64: x86_64_defconfig+kselftest (clang-16): 1 warning Warnings summary: 1 vmlinux.o: warning: objtool: set_ftrace_ops_ro+0x39: relocation to !ENDBR: .text+0x14ef94 ================================================================================ Detailed per-defconfig build reports: -------------------------------------------------------------------------------- defconfig+kselftest (arm64, gcc-12) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- defconfig+kselftest+arm64-chromebook (arm64, gcc-12) — FAIL, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- defconfig+kselftest+arm64-chromebook (arm64, clang-16) — FAIL, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- i386_defconfig+kselftest (i386, gcc-12) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- multi_v7_defconfig+kselftest (arm, gcc-12) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- x86_64_defconfig+kselftest (x86_64, gcc-12) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- x86_64_defconfig+kselftest (x86_64, clang-16) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: vmlinux.o: warning: objtool: set_ftrace_ops_ro+0x39: relocation to !ENDBR: .text+0x14ef94 --- For more info write to <info(a)kernelci.org>

2 months, 1 week

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kselftest/fixes build: 7 builds: 2 failed, 5 passed, 1 warning (v6.11-rc1)

by kernelci.org bot

kselftest/fixes build: 7 builds: 2 failed, 5 passed, 1 warning (v6.11-rc1) Full Build Summary: https://kernelci.org/build/kselftest/branch/fixes/kernel/v6.11-rc1/ Tree: kselftest Branch: fixes Git Describe: v6.11-rc1 Git Commit: 8400291e289ee6b2bf9779ff1c83a291501f017b Git URL: https://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git Built: 4 unique architectures Build Failures Detected: arm64: defconfig+kselftest+arm64-chromebook: (clang-16) FAIL defconfig+kselftest+arm64-chromebook: (gcc-12) FAIL Warnings Detected: arm64: arm: i386: x86_64: x86_64_defconfig+kselftest (clang-16): 1 warning Warnings summary: 1 vmlinux.o: warning: objtool: set_ftrace_ops_ro+0x39: relocation to !ENDBR: .text+0x14ef94 ================================================================================ Detailed per-defconfig build reports: -------------------------------------------------------------------------------- defconfig+kselftest (arm64, gcc-12) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- defconfig+kselftest+arm64-chromebook (arm64, gcc-12) — FAIL, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- defconfig+kselftest+arm64-chromebook (arm64, clang-16) — FAIL, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- i386_defconfig+kselftest (i386, gcc-12) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- multi_v7_defconfig+kselftest (arm, gcc-12) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- x86_64_defconfig+kselftest (x86_64, gcc-12) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- x86_64_defconfig+kselftest (x86_64, clang-16) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: vmlinux.o: warning: objtool: set_ftrace_ops_ro+0x39: relocation to !ENDBR: .text+0x14ef94 --- For more info write to <info(a)kernelci.org>

2 months, 1 week

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[PATCH][next] tools: selftests: riscv: Fix spelling mistake "regesters" -> "registers"

by Colin Ian King

There are a couple of spelling mistakes in ksft_test_result_fail messages. Fix them. Signed-off-by: Colin Ian King <colin.i.king(a)gmail.com> --- tools/testing/selftests/riscv/vector/v_initval_nolibc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/riscv/vector/v_initval_nolibc.c b/tools/testing/selftests/riscv/vector/v_initval_nolibc.c index 1dd94197da30..6838c561e4c9 100644 --- a/tools/testing/selftests/riscv/vector/v_initval_nolibc.c +++ b/tools/testing/selftests/riscv/vector/v_initval_nolibc.c @@ -49,14 +49,14 @@ int main(void) ksft_print_msg("vl = %lu\n", vl); if (datap[0] != 0x00 && datap[0] != 0xff) { - ksft_test_result_fail("v-regesters are not properly initialized\n"); + ksft_test_result_fail("v-registers are not properly initialized\n"); dump(datap, vl * 4); exit(-1); } for (i = 1; i < vl * 4; i++) { if (datap[i] != datap[0]) { - ksft_test_result_fail("detect stale values on v-regesters\n"); + ksft_test_result_fail("detect stale values on v-registers\n"); dump(datap, vl * 4); exit(-2); } -- 2.39.2

2 months, 1 week

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mm, memcg: cg2 memory{.swap,}.peak write handlers

by David Finkel

This is an update of a previous series[1] addressing Johannes' comments, and rebasing on top of linus's master. Unfortunately, linus's master doesn't seem to be bootable at the moment, so I haven't re-run the tests on this change yet. I'll see about re-running everything in the morning. (root= resolution seems to be failing both for x86-64 (in qemu) and usermode linux) Documentation/admin-guide/cgroup-v2.rst | 26 ++-- include/linux/cgroup-defs.h | 5 + include/linux/cgroup.h | 3 + include/linux/memcontrol.h | 5 + include/linux/page_counter.h | 6 +- kernel/cgroup/cgroup-internal.h | 2 + kernel/cgroup/cgroup.c | 7 ++ mm/memcontrol.c | 117 ++++++++++++++++-- mm/page_counter.c | 30 +++-- tools/testing/selftests/cgroup/cgroup_util.c | 22 ++++ tools/testing/selftests/cgroup/cgroup_util.h | 2 + tools/testing/selftests/cgroup/test_memcontrol.c | 226 ++++++++++++++++++++++++++++++++-- 12 files changed, 416 insertions(+), 35 deletions(-) [1]: https://lore.kernel.org/cgroups/20240722235554.2911971-1-davidf@vimeo.com/T/ Thanks for all the constructive comments and discussion! David Finkel Senior Principal Engineer, Core Services Vimeo Inc.

2 months, 1 week

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[PATCH v5 1/2] mm, memcg: cg2 memory{.swap,}.peak write handlers

by David Finkel

This patch revision addresses a few comments from Longman and Johannes here[1], and rebases onto master again. (I still have issues with starting my UML instance to run the tests. I'll see if I an figure out what's going on with that after I get some other work done today) [1]: https://lore.kernel.org/cgroups/20240723233149.3226636-1-davidf@vimeo.com/T/ Thanks again, David Finkel Senior Principal Software Engineer, Core Service Vimeo Inc.

2 months, 1 week

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[PATCH net 0/5] mptcp: fix signal endpoint readd

by Matthieu Baerts (NGI0)

Issue #501 [1] showed that the Netlink PM currently doesn't correctly support removal and re-add of signal endpoints. Patches 1 and 2 address the issue: the first one in the userspace path- manager, introduced in v5.19 ; and the second one in the in-kernel path- manager, introduced in v5.7. Patch 3 introduces a related selftest. There is no 'Fixes' tag, because it might be hard to backport it automatically, as missing helpers in Bash will not be caught when compiling the kernel or the selftests. The last two patches address two small issues in the MPTCP selftests, one introduced in v6.6., and the other one in v5.17. Link: https://github.com/multipath-tcp/mptcp_net-next/issues/501 [1] Signed-off-by: Matthieu Baerts (NGI0) <matttbe(a)kernel.org> --- Liu Jing (1): selftests: mptcp: always close input's FD if opened Paolo Abeni (4): mptcp: fix user-space PM announced address accounting mptcp: fix NL PM announced address accounting selftests: mptcp: add explicit test case for remove/readd selftests: mptcp: fix error path net/mptcp/pm_netlink.c | 27 ++++++++++++++------ tools/testing/selftests/net/mptcp/mptcp_connect.c | 8 +++--- tools/testing/selftests/net/mptcp/mptcp_join.sh | 31 ++++++++++++++++++++++- 3 files changed, 53 insertions(+), 13 deletions(-) --- base-commit: 301927d2d2eb8e541357ba850bc7a1a74dbbd670 change-id: 20240726-upstream-net-20240726-mptcp-fix-signal-readd-f3c72bbcbceb Best regards, -- Matthieu Baerts (NGI0) <matttbe(a)kernel.org>

2 months, 1 week

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[PATCH v2] kselftests: dmabuf-heaps: Ensure the driver name is null-terminated

by Zenghui Yu

Even if a vgem device is configured in, we will skip the import_vgem_fd() test almost every time. TAP version 13 1..11 # Testing heap: system # ======================================= # Testing allocation and importing: ok 1 # SKIP Could not open vgem -1 The problem is that we use the DRM_IOCTL_VERSION ioctl to query the driver version information but leave the name field a non-null-terminated string. Terminate it properly to actually test against the vgem device. While at it, let's check the length of the driver name is exactly 4 bytes and return early otherwise (in case there is a name like "vgemfoo" that gets converted to "vgem\0" unexpectedly). Signed-off-by: Zenghui Yu <yuzenghui(a)huawei.com> --- * From v1 [1]: - Check version.name_len is exactly 4 bytes and return early otherwise [1] https://lore.kernel.org/r/20240708134654.1725-1-yuzenghui@huawei.com P.S., Maybe worth including the kselftests file into "DMA-BUF HEAPS FRAMEWORK" MAINTAINERS entry? tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c index 5f541522364f..5d0a809dc2df 100644 --- a/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c +++ b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c @@ -29,9 +29,11 @@ static int check_vgem(int fd) version.name = name; ret = ioctl(fd, DRM_IOCTL_VERSION, &version); - if (ret) + if (ret || version.name_len != 4) return 0; + name[4] = '\0'; + return !strcmp(name, "vgem"); } -- 2.33.0

2 months, 1 week

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[PATCH v8 4/5] KVM: riscv: selftests: Fix compile error

by Yong-Xuan Wang

Fix compile error introduced by commit d27c34a73514 ("KVM: riscv: selftests: Add some Zc* extensions to get-reg-list test"). These 4 lines should be end with ";". Fixes: d27c34a73514 ("KVM: riscv: selftests: Add some Zc* extensions to get-reg-list test") Signed-off-by: Yong-Xuan Wang <yongxuan.wang(a)sifive.com> --- tools/testing/selftests/kvm/riscv/get-reg-list.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/tools/testing/selftests/kvm/riscv/get-reg-list.c b/tools/testing/selftests/kvm/riscv/get-reg-list.c index f92c2fb23fcd..8e34f7fa44e9 100644 --- a/tools/testing/selftests/kvm/riscv/get-reg-list.c +++ b/tools/testing/selftests/kvm/riscv/get-reg-list.c @@ -961,10 +961,10 @@ KVM_ISA_EXT_SIMPLE_CONFIG(zbkb, ZBKB); KVM_ISA_EXT_SIMPLE_CONFIG(zbkc, ZBKC); KVM_ISA_EXT_SIMPLE_CONFIG(zbkx, ZBKX); KVM_ISA_EXT_SIMPLE_CONFIG(zbs, ZBS); -KVM_ISA_EXT_SIMPLE_CONFIG(zca, ZCA), -KVM_ISA_EXT_SIMPLE_CONFIG(zcb, ZCB), -KVM_ISA_EXT_SIMPLE_CONFIG(zcd, ZCD), -KVM_ISA_EXT_SIMPLE_CONFIG(zcf, ZCF), +KVM_ISA_EXT_SIMPLE_CONFIG(zca, ZCA); +KVM_ISA_EXT_SIMPLE_CONFIG(zcb, ZCB); +KVM_ISA_EXT_SIMPLE_CONFIG(zcd, ZCD); +KVM_ISA_EXT_SIMPLE_CONFIG(zcf, ZCF); KVM_ISA_EXT_SIMPLE_CONFIG(zcmop, ZCMOP); KVM_ISA_EXT_SIMPLE_CONFIG(zfa, ZFA); KVM_ISA_EXT_SIMPLE_CONFIG(zfh, ZFH); -- 2.17.1

2 months, 1 week

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[PATCH 0/1] Add KUnit tests for llist

by Artur Alves

Hi all, This is part of a hackathon organized by LKCAMP[1], focused on writing tests using KUnit. We reached out a while ago asking for advice on what would be a useful contribution[2] and ended up choosing data structures that did not yet have tests. This patch adds tests for the llist data structure, defined in include/linux/llist.h, and is inspired by the KUnit tests for the doubly linked list in lib/list-test.c[3]. [1] https://lkcamp.dev/about/ [2] https://lore.kernel.org/all/Zktnt7rjKryTh9-N@arch/ [3] https://elixir.bootlin.com/linux/latest/source/lib/list-test.c Artur Alves (1): lib/llist_kunit.c: add KUnit tests for llist lib/Kconfig.debug | 11 ++ lib/Makefile | 1 + lib/llist_kunit.c | 360 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 372 insertions(+) create mode 100644 lib/llist_kunit.c -- 2.45.2

2 months, 1 week

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Linux-kselftest-mirror July 2024