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| author | Thomas Hellström <thomas.hellstrom@linux.intel.com> | 2025-12-04 22:54:56 +0100 |
|---|---|---|
| committer | Thomas Hellström <thomas.hellstrom@linux.intel.com> | 2025-12-04 22:54:56 +0100 |
| commit | 3f1c07fc21c68bd3bd2df9d2c9441f6485e934d9 (patch) | |
| tree | 2bbe746323ca53170b1c6f18f67178021d5854f5 /tools/testing/selftests/bpf/progs/stacktrace_ips.c | |
| parent | d72312d730450aab225a80bc84436757b85b08b5 (diff) | |
| parent | 0692602defb0c273f80dec9c564ca50726404aca (diff) | |
Merge drm/drm-next into drm-xe-next-fixes
Backmerging to be able do to a clean PR.
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Diffstat (limited to 'tools/testing/selftests/bpf/progs/stacktrace_ips.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/stacktrace_ips.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/stacktrace_ips.c b/tools/testing/selftests/bpf/progs/stacktrace_ips.c new file mode 100644 index 000000000000..a96c8150d7f5 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/stacktrace_ips.c @@ -0,0 +1,49 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2018 Facebook + +#include <vmlinux.h> +#include <bpf/bpf_helpers.h> +#include <bpf/bpf_tracing.h> + +#ifndef PERF_MAX_STACK_DEPTH +#define PERF_MAX_STACK_DEPTH 127 +#endif + +typedef __u64 stack_trace_t[PERF_MAX_STACK_DEPTH]; + +struct { + __uint(type, BPF_MAP_TYPE_STACK_TRACE); + __uint(max_entries, 16384); + __type(key, __u32); + __type(value, stack_trace_t); +} stackmap SEC(".maps"); + +extern bool CONFIG_UNWINDER_ORC __kconfig __weak; + +/* + * This function is here to have CONFIG_UNWINDER_ORC + * used and added to object BTF. + */ +int unused(void) +{ + return CONFIG_UNWINDER_ORC ? 0 : 1; +} + +__u32 stack_key; + +SEC("kprobe.multi") +int kprobe_multi_test(struct pt_regs *ctx) +{ + stack_key = bpf_get_stackid(ctx, &stackmap, 0); + return 0; +} + +SEC("raw_tp/bpf_testmod_test_read") +int rawtp_test(void *ctx) +{ + /* Skip ebpf program entry in the stack. */ + stack_key = bpf_get_stackid(ctx, &stackmap, 0); + return 0; +} + +char _license[] SEC("license") = "GPL"; |