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4f7f417042
Fix incompatible function pointer type warnings in sched_ext BPF selftests by explicitly casting the function pointers when initializing struct_ops. This addresses multiple -Wincompatible-function-pointer-types warnings from the clang compiler where function signatures didn't match exactly. The void * cast ensures the compiler accepts the function pointer assignment despite minor type differences in the parameters. Signed-off-by: Vishal Chourasia <vishalc@linux.ibm.com> Signed-off-by: Tejun Heo <tj@kernel.org>
44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2023 Meta Platforms, Inc. and affiliates.
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* Copyright (c) 2023 David Vernet <dvernet@meta.com>
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* Copyright (c) 2023 Tejun Heo <tj@kernel.org>
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*/
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#include <scx/common.bpf.h>
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char _license[] SEC("license") = "GPL";
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/* Manually specify the signature until the kfunc is added to the scx repo. */
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s32 scx_bpf_select_cpu_dfl(struct task_struct *p, s32 prev_cpu, u64 wake_flags,
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bool *found) __ksym;
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s32 BPF_STRUCT_OPS(enq_select_cpu_fails_select_cpu, struct task_struct *p,
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s32 prev_cpu, u64 wake_flags)
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{
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return prev_cpu;
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}
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void BPF_STRUCT_OPS(enq_select_cpu_fails_enqueue, struct task_struct *p,
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u64 enq_flags)
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{
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/*
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* Need to initialize the variable or the verifier will fail to load.
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* Improving these semantics is actively being worked on.
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*/
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bool found = false;
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/* Can only call from ops.select_cpu() */
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scx_bpf_select_cpu_dfl(p, 0, 0, &found);
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scx_bpf_dispatch(p, SCX_DSQ_GLOBAL, SCX_SLICE_DFL, enq_flags);
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}
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SEC(".struct_ops.link")
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struct sched_ext_ops enq_select_cpu_fails_ops = {
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.select_cpu = (void *) enq_select_cpu_fails_select_cpu,
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.enqueue = (void *) enq_select_cpu_fails_enqueue,
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.name = "enq_select_cpu_fails",
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.timeout_ms = 1000U,
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};
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