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authorTakashi Iwai <tiwai@suse.de>2024-10-02 21:29:16 +0200
committerTakashi Iwai <tiwai@suse.de>2024-10-02 21:29:16 +0200
commit0c436dfe5c25d0931b164b944165259f95e5281f (patch)
tree7b1d3d8d7bc600f218af0ca6ed9a4f7527f88e5f /tools/testing/selftests/sched_ext/select_cpu_dispatch.bpf.c
parent3f7f36a4559ef78a6418c5f0447fbfbdcf671956 (diff)
parenteb1df4bbf53c29babf68fcb36e80d9c62a345257 (diff)
downloadlinux-next-0c436dfe5c25d0931b164b944165259f95e5281f.tar.gz
linux-next-0c436dfe5c25d0931b164b944165259f95e5281f.zip
Merge tag 'asoc-fix-v6.12-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v6.12 A bunch of fixes here that came in during the merge window and the first week of release, plus some new quirks and device IDs. There's nothing major here, it's a bit bigger than it might've been due to there being no fixes sent during the merge window due to your vacation.
Diffstat (limited to 'tools/testing/selftests/sched_ext/select_cpu_dispatch.bpf.c')
-rw-r--r--tools/testing/selftests/sched_ext/select_cpu_dispatch.bpf.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/tools/testing/selftests/sched_ext/select_cpu_dispatch.bpf.c b/tools/testing/selftests/sched_ext/select_cpu_dispatch.bpf.c
new file mode 100644
index 000000000000..f0b96a4a04b2
--- /dev/null
+++ b/tools/testing/selftests/sched_ext/select_cpu_dispatch.bpf.c
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * A scheduler that validates the behavior of direct dispatching with a default
+ * select_cpu implementation.
+ *
+ * Copyright (c) 2023 Meta Platforms, Inc. and affiliates.
+ * Copyright (c) 2023 David Vernet <dvernet@meta.com>
+ * Copyright (c) 2023 Tejun Heo <tj@kernel.org>
+ */
+
+#include <scx/common.bpf.h>
+
+char _license[] SEC("license") = "GPL";
+
+s32 BPF_STRUCT_OPS(select_cpu_dispatch_select_cpu, struct task_struct *p,
+ s32 prev_cpu, u64 wake_flags)
+{
+ u64 dsq_id = SCX_DSQ_LOCAL;
+ s32 cpu = prev_cpu;
+
+ if (scx_bpf_test_and_clear_cpu_idle(cpu))
+ goto dispatch;
+
+ cpu = scx_bpf_pick_idle_cpu(p->cpus_ptr, 0);
+ if (cpu >= 0)
+ goto dispatch;
+
+ dsq_id = SCX_DSQ_GLOBAL;
+ cpu = prev_cpu;
+
+dispatch:
+ scx_bpf_dispatch(p, dsq_id, SCX_SLICE_DFL, 0);
+ return cpu;
+}
+
+SEC(".struct_ops.link")
+struct sched_ext_ops select_cpu_dispatch_ops = {
+ .select_cpu = select_cpu_dispatch_select_cpu,
+ .name = "select_cpu_dispatch",
+ .timeout_ms = 1000U,
+};