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authorChangwoo Min <changwoo@igalia.com>2025-01-09 22:14:55 +0900
committerTejun Heo <tj@kernel.org>2025-01-10 08:04:40 -1000
commit0f130bc341d09a82ad23e7fc59d4306528c4c4ce (patch)
tree76d5f20b93a36f3ea1a10f4fbde28b12f32744a2
parentd07be814fc7165cb804317c99228243382e81188 (diff)
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: Changwoo Min <changwoo@igalia.com> Acked-by: Andrea Righi <arighi@nvidia.com> Signed-off-by: Tejun Heo <tj@kernel.org>
-rw-r--r--tools/sched_ext/scx_central.bpf.c4
-rw-r--r--tools/sched_ext/scx_flatcg.bpf.c2
2 files changed, 3 insertions, 3 deletions
diff --git a/tools/sched_ext/scx_central.bpf.c b/tools/sched_ext/scx_central.bpf.c
index 2907df78241e..4239034ad593 100644
--- a/tools/sched_ext/scx_central.bpf.c
+++ b/tools/sched_ext/scx_central.bpf.c
@@ -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;
diff --git a/tools/sched_ext/scx_flatcg.bpf.c b/tools/sched_ext/scx_flatcg.bpf.c
index 3dbfa82883be..5f588963fb2f 100644
--- a/tools/sched_ext/scx_flatcg.bpf.c
+++ b/tools/sched_ext/scx_flatcg.bpf.c
@@ -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();