aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/tools/perf/tests/bpf-script-example.c
diff options
context:
space:
mode:
Diffstat (limited to 'tools/perf/tests/bpf-script-example.c')
-rw-r--r--tools/perf/tests/bpf-script-example.c49
1 files changed, 0 insertions, 49 deletions
diff --git a/tools/perf/tests/bpf-script-example.c b/tools/perf/tests/bpf-script-example.c
deleted file mode 100644
index ab4b98b3165d..000000000000
--- a/tools/perf/tests/bpf-script-example.c
+++ /dev/null
@@ -1,49 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * bpf-script-example.c
- * Test basic LLVM building
- */
-#ifndef LINUX_VERSION_CODE
-# error Need LINUX_VERSION_CODE
-# error Example: for 4.2 kernel, put 'clang-opt="-DLINUX_VERSION_CODE=0x40200" into llvm section of ~/.perfconfig'
-#endif
-#define BPF_ANY 0
-#define BPF_MAP_TYPE_ARRAY 2
-#define BPF_FUNC_map_lookup_elem 1
-#define BPF_FUNC_map_update_elem 2
-
-static void *(*bpf_map_lookup_elem)(void *map, void *key) =
- (void *) BPF_FUNC_map_lookup_elem;
-static void *(*bpf_map_update_elem)(void *map, void *key, void *value, int flags) =
- (void *) BPF_FUNC_map_update_elem;
-
-struct bpf_map_def {
- unsigned int type;
- unsigned int key_size;
- unsigned int value_size;
- unsigned int max_entries;
-};
-
-#define SEC(NAME) __attribute__((section(NAME), used))
-struct bpf_map_def SEC("maps") flip_table = {
- .type = BPF_MAP_TYPE_ARRAY,
- .key_size = sizeof(int),
- .value_size = sizeof(int),
- .max_entries = 1,
-};
-
-SEC("func=do_epoll_wait")
-int bpf_func__SyS_epoll_pwait(void *ctx)
-{
- int ind =0;
- int *flag = bpf_map_lookup_elem(&flip_table, &ind);
- int new_flag;
- if (!flag)
- return 0;
- /* flip flag and store back */
- new_flag = !*flag;
- bpf_map_update_elem(&flip_table, &ind, &new_flag, BPF_ANY);
- return new_flag;
-}
-char _license[] SEC("license") = "GPL";
-int _version SEC("version") = LINUX_VERSION_CODE;