1 files changed, 0 insertions, 106 deletions
diff --git a/tools/bpf/runqslower/runqslower.bpf.c b/tools/bpf/runqslower/runqslower.bpf.c
deleted file mode 100644
index fced54a3adf6..000000000000
--- a/tools/bpf/runqslower/runqslower.bpf.c
+++ /dev/null
@@ -1,106 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-// Copyright (c) 2019 Facebook
-#include "vmlinux.h"
-#include <bpf/bpf_helpers.h>
-#include "runqslower.h"
-
-#define TASK_RUNNING 0
-#define BPF_F_CURRENT_CPU 0xffffffffULL
-
-const volatile __u64 min_us = 0;
-const volatile pid_t targ_pid = 0;
-
-struct {
-	__uint(type, BPF_MAP_TYPE_TASK_STORAGE);
-	__uint(map_flags, BPF_F_NO_PREALLOC);
-	__type(key, int);
-	__type(value, u64);
-} start SEC(".maps");
-
-struct {
-	__uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
-	__uint(key_size, sizeof(u32));
-	__uint(value_size, sizeof(u32));
-} events SEC(".maps");
-
-/* record enqueue timestamp */
-__always_inline
-static int trace_enqueue(struct task_struct *t)
-{
-	u32 pid = t->pid;
-	u64 *ptr;
-
-	if (!pid || (targ_pid && targ_pid != pid))
-		return 0;
-
-	ptr = bpf_task_storage_get(&start, t, 0,
-				   BPF_LOCAL_STORAGE_GET_F_CREATE);
-	if (!ptr)
-		return 0;
-
-	*ptr = bpf_ktime_get_ns();
-	return 0;
-}
-
-SEC("tp_btf/sched_wakeup")
-int handle__sched_wakeup(u64 *ctx)
-{
-	/* TP_PROTO(struct task_struct *p) */
-	struct task_struct *p = (void *)ctx[0];
-
-	return trace_enqueue(p);
-}
-
-SEC("tp_btf/sched_wakeup_new")
-int handle__sched_wakeup_new(u64 *ctx)
-{
-	/* TP_PROTO(struct task_struct *p) */
-	struct task_struct *p = (void *)ctx[0];
-
-	return trace_enqueue(p);
-}
-
-SEC("tp_btf/sched_switch")
-int handle__sched_switch(u64 *ctx)
-{
-	/* TP_PROTO(bool preempt, struct task_struct *prev,
-	 *	    struct task_struct *next)
-	 */
-	struct task_struct *prev = (struct task_struct *)ctx[1];
-	struct task_struct *next = (struct task_struct *)ctx[2];
-	struct runq_event event = {};
-	u64 *tsp, delta_us;
-	u32 pid;
-
-	/* ivcsw: treat like an enqueue event and store timestamp */
-	if (prev->__state == TASK_RUNNING)
-		trace_enqueue(prev);
-
-	pid = next->pid;
-
-	/* For pid mismatch, save a bpf_task_storage_get */
-	if (!pid || (targ_pid && targ_pid != pid))
-		return 0;
-
-	/* fetch timestamp and calculate delta */
-	tsp = bpf_task_storage_get(&start, next, 0, 0);
-	if (!tsp)
-		return 0;   /* missed enqueue */
-
-	delta_us = (bpf_ktime_get_ns() - *tsp) / 1000;
-	if (min_us && delta_us <= min_us)
-		return 0;
-
-	event.pid = pid;
-	event.delta_us = delta_us;
-	bpf_get_current_comm(&event.task, sizeof(event.task));
-
-	/* output */
-	bpf_perf_event_output(ctx, &events, BPF_F_CURRENT_CPU,
-			      &event, sizeof(event));
-
-	bpf_task_storage_delete(&start, next);
-	return 0;
-}
-
-char LICENSE[] SEC("license") = "GPL";