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authorJiri Kosina <jkosina@suse.cz>2023-11-01 02:07:35 +0300
committerJiri Kosina <jkosina@suse.cz>2023-11-01 02:07:35 +0300
commit20cd569d7ee8fce24e8753f0f43af6c420557b1f (patch)
treef559cfda594846795aa51c99d96f92d8c912851a /tools/perf/tests/bpf-script-example.c
parent62cc9c3cb3ec1bf31cc116146185ed97b450836a (diff)
parenteeebfe6259ba2d5b0980eb7b0df384eb77e9e4f5 (diff)
downloadlinux-20cd569d7ee8fce24e8753f0f43af6c420557b1f.tar.xz
Merge branch 'for-6.7/config_pm' into for-linus
- #ifdef CONFIG_PM removal from HID code (Thomas Weißschuh)
Diffstat (limited to 'tools/perf/tests/bpf-script-example.c')
-rw-r--r--tools/perf/tests/bpf-script-example.c60
1 files changed, 0 insertions, 60 deletions
diff --git a/tools/perf/tests/bpf-script-example.c b/tools/perf/tests/bpf-script-example.c
deleted file mode 100644
index b638cc99d5ae..000000000000
--- a/tools/perf/tests/bpf-script-example.c
+++ /dev/null
@@ -1,60 +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;
-
-/*
- * Following macros are taken from tools/lib/bpf/bpf_helpers.h,
- * and are used to create BTF defined maps. It is easier to take
- * 2 simple macros, than being able to include above header in
- * runtime.
- *
- * __uint - defines integer attribute of BTF map definition,
- * Such attributes are represented using a pointer to an array,
- * in which dimensionality of array encodes specified integer
- * value.
- *
- * __type - defines pointer variable with typeof(val) type for
- * attributes like key or value, which will be defined by the
- * size of the type.
- */
-#define __uint(name, val) int (*name)[val]
-#define __type(name, val) typeof(val) *name
-
-#define SEC(NAME) __attribute__((section(NAME), used))
-struct {
- __uint(type, BPF_MAP_TYPE_ARRAY);
- __uint(max_entries, 1);
- __type(key, int);
- __type(value, int);
-} flip_table SEC(".maps");
-
-SEC("syscalls:sys_enter_epoll_pwait")
-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;