1 files changed, 0 insertions, 89 deletions
diff --git a/samples/bpf/tracex3_kern.c b/samples/bpf/tracex3_kern.c
deleted file mode 100644
index 9974c3d7c18b..000000000000
--- a/samples/bpf/tracex3_kern.c
+++ /dev/null
@@ -1,89 +0,0 @@
-/* Copyright (c) 2013-2015 PLUMgrid, http://plumgrid.com
- *
- * 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 <linux/skbuff.h>
-#include <linux/netdevice.h>
-#include <linux/version.h>
-#include <uapi/linux/bpf.h>
-#include "bpf_helpers.h"
-
-struct bpf_map_def SEC("maps") my_map = {
-	.type = BPF_MAP_TYPE_HASH,
-	.key_size = sizeof(long),
-	.value_size = sizeof(u64),
-	.max_entries = 4096,
-};
-
-/* kprobe is NOT a stable ABI. If kernel internals change this bpf+kprobe
- * example will no longer be meaningful
- */
-SEC("kprobe/blk_start_request")
-int bpf_prog1(struct pt_regs *ctx)
-{
-	long rq = PT_REGS_PARM1(ctx);
-	u64 val = bpf_ktime_get_ns();
-
-	bpf_map_update_elem(&my_map, &rq, &val, BPF_ANY);
-	return 0;
-}
-
-static unsigned int log2l(unsigned long long n)
-{
-#define S(k) if (n >= (1ull << k)) { i += k; n >>= k; }
-	int i = -(n == 0);
-	S(32); S(16); S(8); S(4); S(2); S(1);
-	return i;
-#undef S
-}
-
-#define SLOTS 100
-
-struct bpf_map_def SEC("maps") lat_map = {
-	.type = BPF_MAP_TYPE_PERCPU_ARRAY,
-	.key_size = sizeof(u32),
-	.value_size = sizeof(u64),
-	.max_entries = SLOTS,
-};
-
-SEC("kprobe/blk_account_io_completion")
-int bpf_prog2(struct pt_regs *ctx)
-{
-	long rq = PT_REGS_PARM1(ctx);
-	u64 *value, l, base;
-	u32 index;
-
-	value = bpf_map_lookup_elem(&my_map, &rq);
-	if (!value)
-		return 0;
-
-	u64 cur_time = bpf_ktime_get_ns();
-	u64 delta = cur_time - *value;
-
-	bpf_map_delete_elem(&my_map, &rq);
-
-	/* the lines below are computing index = log10(delta)*10
-	 * using integer arithmetic
-	 * index = 29 ~ 1 usec
-	 * index = 59 ~ 1 msec
-	 * index = 89 ~ 1 sec
-	 * index = 99 ~ 10sec or more
-	 * log10(x)*10 = log2(x)*10/log2(10) = log2(x)*3
-	 */
-	l = log2l(delta);
-	base = 1ll << l;
-	index = (l * 64 + (delta - base) * 64 / base) * 3 / 64;
-
-	if (index >= SLOTS)
-		index = SLOTS - 1;
-
-	value = bpf_map_lookup_elem(&lat_map, &index);
-	if (value)
-		*value += 1;
-
-	return 0;
-}
-char _license[] SEC("license") = "GPL";
-u32 _version SEC("version") = LINUX_VERSION_CODE;