Commit 0f130bc3 authored by Changwoo Min's avatar Changwoo Min Committed by Tejun Heo
Browse files

sched_ext: Replace bpf_ktime_get_ns() to scx_bpf_now() 



In the BPF schedulers that use bpf_ktime_get_ns() -- scx_central and
scx_flatcg, replace bpf_ktime_get_ns() calls to scx_bpf_now().

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 d07be814

tools/sched_ext/scx_central.bpf.c

+2 −2
Original line number Diff line number Diff line
@@ -245,7 +245,7 @@ void BPF_STRUCT_OPS(central_running, struct task_struct *p) 
	s32 cpu = scx_bpf_task_cpu(p);

	u64 *started_at = ARRAY_ELEM_PTR(cpu_started_at, cpu, nr_cpu_ids);

	if (started_at)

		*started_at = bpf_ktime_get_ns() ?: 1;	/* 0 indicates idle */

		*started_at = scx_bpf_now() ?: 1;	/* 0 indicates idle */

}



void BPF_STRUCT_OPS(central_stopping, struct task_struct *p, bool runnable)
@@ -258,7 +258,7 @@ void BPF_STRUCT_OPS(central_stopping, struct task_struct *p, bool runnable) 


static int central_timerfn(void *map, int *key, struct bpf_timer *timer)

{

	u64 now = bpf_ktime_get_ns();

	u64 now = scx_bpf_now();

	u64 nr_to_kick = nr_queued;

	s32 i, curr_cpu;

tools/sched_ext/scx_flatcg.bpf.c

+1 −1
Original line number Diff line number Diff line
@@ -734,7 +734,7 @@ void BPF_STRUCT_OPS(fcg_dispatch, s32 cpu, struct task_struct *prev) 
	struct fcg_cpu_ctx *cpuc;

	struct fcg_cgrp_ctx *cgc;

	struct cgroup *cgrp;

	u64 now = bpf_ktime_get_ns();

	u64 now = scx_bpf_now();

	bool picked_next = false;



	cpuc = find_cpu_ctx();