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author | Kalle Valo <kvalo@kernel.org> | 2023-01-17 13:36:25 +0200 |
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committer | Kalle Valo <kvalo@kernel.org> | 2023-01-17 13:36:25 +0200 |
commit | d0e99511834b6828c960e978d9a8cb6e5731250d (patch) | |
tree | e7b062c1f9d28a55083477a1462286a7923a57fd /tools/perf/examples/bpf/hello.c | |
parent | de7d0ff301fccc75281d7d8eb98c4a47faacf32d (diff) | |
parent | 80f8a66dede0a4b4e9e846765a97809c6fe49ce5 (diff) | |
download | linux-d0e99511834b6828c960e978d9a8cb6e5731250d.tar.gz linux-d0e99511834b6828c960e978d9a8cb6e5731250d.tar.bz2 linux-d0e99511834b6828c960e978d9a8cb6e5731250d.zip |
Merge wireless into wireless-next
Due to the two cherry picked commits from wireless to wireless-next we have
several conflicts in mt76. To avoid any bugs with conflicts merge wireless into
wireless-next.
96f134dc1964 wifi: mt76: handle possible mt76_rx_token_consume failures
fe13dad8992b wifi: mt76: dma: do not increment queue head if mt76_dma_add_buf fails
Diffstat (limited to 'tools/perf/examples/bpf/hello.c')
-rw-r--r-- | tools/perf/examples/bpf/hello.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/tools/perf/examples/bpf/hello.c b/tools/perf/examples/bpf/hello.c index cf3c2fdc7f79..e9080b0df158 100644 --- a/tools/perf/examples/bpf/hello.c +++ b/tools/perf/examples/bpf/hello.c @@ -1,9 +1,27 @@ -#include <stdio.h> +// SPDX-License-Identifier: GPL-2.0 +#include <linux/bpf.h> +#include <bpf/bpf_helpers.h> -int syscall_enter(openat)(void *args) +struct __bpf_stdout__ { + __uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY); + __type(key, int); + __type(value, __u32); + __uint(max_entries, __NR_CPUS__); +} __bpf_stdout__ SEC(".maps"); + +#define puts(from) \ + ({ const int __len = sizeof(from); \ + char __from[sizeof(from)] = from; \ + bpf_perf_event_output(args, &__bpf_stdout__, BPF_F_CURRENT_CPU, \ + &__from, __len & (sizeof(from) - 1)); }) + +struct syscall_enter_args; + +SEC("raw_syscalls:sys_enter") +int sys_enter(struct syscall_enter_args *args) { puts("Hello, world\n"); return 0; } -license(GPL); +char _license[] SEC("license") = "GPL"; |