Commit 2e1ce39f authored by Changwoo Min's avatar Changwoo Min Committed by Tejun Heo
Browse files

sched_ext: Add scx_bpf_now() for BPF scheduler 



scx_bpf_now() is added to the header files so the BPF scheduler
can use it.

Signed-off-by: default avatarChangwoo Min <changwoo@igalia.com>
Acked-by: default avatarAndrea Righi <arighi@nvidia.com>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent 3a9910b5

tools/sched_ext/include/scx/common.bpf.h

+1 −0
Original line number Diff line number Diff line
@@ -76,6 +76,7 @@ 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 __weak;

u64 scx_bpf_now(void) __ksym __weak;



/*

 * Use the following as @it__iter when calling scx_bpf_dsq_move[_vtime]() from

tools/sched_ext/include/scx/compat.bpf.h

+5 −0
Original line number Diff line number Diff line
@@ -125,6 +125,11 @@ bool scx_bpf_dispatch_vtime_from_dsq___compat(struct bpf_iter_scx_dsq *it__iter, 
	false;									\

})



#define scx_bpf_now()								\

	(bpf_ksym_exists(scx_bpf_now) ?						\

	 scx_bpf_now() :							\

	 bpf_ktime_get_ns())



/*

 * Define sched_ext_ops. This may be expanded to define multiple variants for

 * backward compatibility. See compat.h::SCX_OPS_LOAD/ATTACH().