1 files changed, 0 insertions, 157 deletions
diff --git a/samples/bpf/offwaketime_kern.c b/samples/bpf/offwaketime_kern.c
deleted file mode 100644
index e74ee1cd4b9c..000000000000
--- a/samples/bpf/offwaketime_kern.c
+++ /dev/null
@@ -1,157 +0,0 @@
-/* Copyright (c) 2016 Facebook
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- */
-#include <uapi/linux/bpf.h>
-#include <uapi/linux/ptrace.h>
-#include <uapi/linux/perf_event.h>
-#include <linux/version.h>
-#include <linux/sched.h>
-#include <bpf/bpf_helpers.h>
-#include <bpf/bpf_tracing.h>
-
-#define _(P)                                                                   \
-	({                                                                     \
-		typeof(P) val;                                                 \
-		bpf_probe_read_kernel(&val, sizeof(val), &(P));                \
-		val;                                                           \
-	})
-
-#define MINBLOCK_US	1
-
-struct key_t {
-	char waker[TASK_COMM_LEN];
-	char target[TASK_COMM_LEN];
-	u32 wret;
-	u32 tret;
-};
-
-struct bpf_map_def SEC("maps") counts = {
-	.type = BPF_MAP_TYPE_HASH,
-	.key_size = sizeof(struct key_t),
-	.value_size = sizeof(u64),
-	.max_entries = 10000,
-};
-
-struct bpf_map_def SEC("maps") start = {
-	.type = BPF_MAP_TYPE_HASH,
-	.key_size = sizeof(u32),
-	.value_size = sizeof(u64),
-	.max_entries = 10000,
-};
-
-struct wokeby_t {
-	char name[TASK_COMM_LEN];
-	u32 ret;
-};
-
-struct bpf_map_def SEC("maps") wokeby = {
-	.type = BPF_MAP_TYPE_HASH,
-	.key_size = sizeof(u32),
-	.value_size = sizeof(struct wokeby_t),
-	.max_entries = 10000,
-};
-
-struct bpf_map_def SEC("maps") stackmap = {
-	.type = BPF_MAP_TYPE_STACK_TRACE,
-	.key_size = sizeof(u32),
-	.value_size = PERF_MAX_STACK_DEPTH * sizeof(u64),
-	.max_entries = 10000,
-};
-
-#define STACKID_FLAGS (0 | BPF_F_FAST_STACK_CMP)
-
-SEC("kprobe/try_to_wake_up")
-int waker(struct pt_regs *ctx)
-{
-	struct task_struct *p = (void *) PT_REGS_PARM1(ctx);
-	struct wokeby_t woke;
-	u32 pid;
-
-	pid = _(p->pid);
-
-	bpf_get_current_comm(&woke.name, sizeof(woke.name));
-	woke.ret = bpf_get_stackid(ctx, &stackmap, STACKID_FLAGS);
-
-	bpf_map_update_elem(&wokeby, &pid, &woke, BPF_ANY);
-	return 0;
-}
-
-static inline int update_counts(void *ctx, u32 pid, u64 delta)
-{
-	struct wokeby_t *woke;
-	u64 zero = 0, *val;
-	struct key_t key;
-
-	__builtin_memset(&key.waker, 0, sizeof(key.waker));
-	bpf_get_current_comm(&key.target, sizeof(key.target));
-	key.tret = bpf_get_stackid(ctx, &stackmap, STACKID_FLAGS);
-	key.wret = 0;
-
-	woke = bpf_map_lookup_elem(&wokeby, &pid);
-	if (woke) {
-		key.wret = woke->ret;
-		__builtin_memcpy(&key.waker, woke->name, sizeof(key.waker));
-		bpf_map_delete_elem(&wokeby, &pid);
-	}
-
-	val = bpf_map_lookup_elem(&counts, &key);
-	if (!val) {
-		bpf_map_update_elem(&counts, &key, &zero, BPF_NOEXIST);
-		val = bpf_map_lookup_elem(&counts, &key);
-		if (!val)
-			return 0;
-	}
-	(*val) += delta;
-	return 0;
-}
-
-#if 1
-/* taken from /sys/kernel/debug/tracing/events/sched/sched_switch/format */
-struct sched_switch_args {
-	unsigned long long pad;
-	char prev_comm[16];
-	int prev_pid;
-	int prev_prio;
-	long long prev_state;
-	char next_comm[16];
-	int next_pid;
-	int next_prio;
-};
-SEC("tracepoint/sched/sched_switch")
-int oncpu(struct sched_switch_args *ctx)
-{
-	/* record previous thread sleep time */
-	u32 pid = ctx->prev_pid;
-#else
-SEC("kprobe/finish_task_switch")
-int oncpu(struct pt_regs *ctx)
-{
-	struct task_struct *p = (void *) PT_REGS_PARM1(ctx);
-	/* record previous thread sleep time */
-	u32 pid = _(p->pid);
-#endif
-	u64 delta, ts, *tsp;
-
-	ts = bpf_ktime_get_ns();
-	bpf_map_update_elem(&start, &pid, &ts, BPF_ANY);
-
-	/* calculate current thread's delta time */
-	pid = bpf_get_current_pid_tgid();
-	tsp = bpf_map_lookup_elem(&start, &pid);
-	if (!tsp)
-		/* missed start or filtered */
-		return 0;
-
-	delta = bpf_ktime_get_ns() - *tsp;
-	bpf_map_delete_elem(&start, &pid);
-	delta = delta / 1000;
-	if (delta < MINBLOCK_US)
-		return 0;
-
-	return update_counts(ctx, pid, delta);
-}
-char _license[] SEC("license") = "GPL";
-u32 _version SEC("version") = LINUX_VERSION_CODE;