diff options
author | Tony Lindgren <tony@atomide.com> | 2018-08-28 09:58:03 -0700 |
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committer | Tony Lindgren <tony@atomide.com> | 2018-08-28 09:58:03 -0700 |
commit | ea4d65f14f6aaa53e379b93c5544245ef081b3e7 (patch) | |
tree | a15485f4f1cf547a52b31fa8e16e14b9579b7200 /tools/perf/include/bpf/stdio.h | |
parent | ce32d59ee2cd036f6e8a6ed17a06a0b0bec5c67c (diff) | |
parent | 496f3347d834aec91c38b45d6249ed00f58ad233 (diff) |
Merge branch 'perm-fix' into omap-for-v4.19/fixes-v2
Diffstat (limited to 'tools/perf/include/bpf/stdio.h')
-rw-r--r-- | tools/perf/include/bpf/stdio.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/tools/perf/include/bpf/stdio.h b/tools/perf/include/bpf/stdio.h new file mode 100644 index 000000000000..2899cb7bfed8 --- /dev/null +++ b/tools/perf/include/bpf/stdio.h @@ -0,0 +1,19 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <bpf.h> + +struct bpf_map SEC("maps") __bpf_stdout__ = { + .type = BPF_MAP_TYPE_PERF_EVENT_ARRAY, + .key_size = sizeof(int), + .value_size = sizeof(u32), + .max_entries = __NR_CPUS__, +}; + +static int (*perf_event_output)(void *, struct bpf_map *, int, void *, unsigned long) = + (void *)BPF_FUNC_perf_event_output; + +#define puts(from) \ + ({ const int __len = sizeof(from); \ + char __from[__len] = from; \ + perf_event_output(args, &__bpf_stdout__, BPF_F_CURRENT_CPU, \ + &__from, __len & (sizeof(from) - 1)); }) |