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sched_ext: Add __weak markers to BPF helper function decalarations

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Fix build errors by adding __weak markers to BPF helper function
declarations in header files. This resolves static assertion failures
in scx_qmap.bpf.c and scx_flatcg.bpf.c where functions like
scx_bpf_dispatch_from_dsq_set_slice, scx_bpf_dispatch_from_dsq_set_vtime,
and scx_bpf_task_cgroup were missing the __weak attribute.

[1] https://lore.kernel.org/all/ZvvfUqRNM4-jYQzH@linux.ibm.com

Signed-off-by: Vishal Chourasia <vishalc@linux.ibm.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Vishal Chourasia 2024-10-02 12:38:06 +05:30 committed by Tejun Heo
parent 95b873693a
commit fcbc423577
1 changed files with 3 additions and 3 deletions
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6
tools/sched_ext/include/scx/common.bpf.h
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@ -41,8 +41,8 @@ void scx_bpf_dispatch_vtime(struct task_struct *p, u64 dsq_id, u64 slice, u64 vt
u32 scx_bpf_dispatch_nr_slots(void) __ksym;
void scx_bpf_dispatch_cancel(void) __ksym;
bool scx_bpf_consume(u64 dsq_id) __ksym;
void scx_bpf_dispatch_from_dsq_set_slice(struct bpf_iter_scx_dsq *it__iter, u64 slice) __ksym;
void scx_bpf_dispatch_from_dsq_set_vtime(struct bpf_iter_scx_dsq *it__iter, u64 vtime) __ksym;
void scx_bpf_dispatch_from_dsq_set_slice(struct bpf_iter_scx_dsq *it__iter, u64 slice) __ksym __weak;
void scx_bpf_dispatch_from_dsq_set_vtime(struct bpf_iter_scx_dsq *it__iter, u64 vtime) __ksym __weak;
bool scx_bpf_dispatch_from_dsq(struct bpf_iter_scx_dsq *it__iter, struct task_struct *p, u64 dsq_id, u64 enq_flags) __ksym __weak;
bool scx_bpf_dispatch_vtime_from_dsq(struct bpf_iter_scx_dsq *it__iter, struct task_struct *p, u64 dsq_id, u64 enq_flags) __ksym __weak;
u32 scx_bpf_reenqueue_local(void) __ksym;
@ -71,7 +71,7 @@ s32 scx_bpf_pick_any_cpu(const cpumask_t *cpus_allowed, u64 flags) __ksym;
bool scx_bpf_task_running(const struct task_struct *p) __ksym;
s32 scx_bpf_task_cpu(const struct task_struct *p) __ksym;
struct rq *scx_bpf_cpu_rq(s32 cpu) __ksym;
struct cgroup *scx_bpf_task_cgroup(struct task_struct *p) __ksym;
struct cgroup *scx_bpf_task_cgroup(struct task_struct *p) __ksym __weak;
/*
* Use the following as @it__iter when calling