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sched_ext: Replace bpf_ktime_get_ns() to scx_bpf_now()

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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: Changwoo Min <changwoo@igalia.com>
Acked-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Changwoo Min 2025-01-09 22:14:55 +09:00 committed by Tejun Heo
parent d07be814fc
commit 0f130bc341
2 changed files with 3 additions and 3 deletions
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4
tools/sched_ext/scx_central.bpf.c
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@ -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;

2
tools/sched_ext/scx_flatcg.bpf.c
View File

@ -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();