diff options
Diffstat (limited to 'tools/perf/examples/bpf')
| -rw-r--r-- | tools/perf/examples/bpf/augmented_raw_syscalls.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/tools/perf/examples/bpf/augmented_raw_syscalls.c b/tools/perf/examples/bpf/augmented_raw_syscalls.c index bb3dcc4ec256..a91c5874433e 100644 --- a/tools/perf/examples/bpf/augmented_raw_syscalls.c +++ b/tools/perf/examples/bpf/augmented_raw_syscalls.c @@ -26,10 +26,14 @@ struct bpf_map SEC("maps") __augmented_syscalls__ = { .max_entries = __NR_CPUS__, }; +struct syscall { + bool enabled; +}; + struct bpf_map SEC("maps") syscalls = { .type = BPF_MAP_TYPE_ARRAY, .key_size = sizeof(int), - .value_size = sizeof(bool), + .value_size = sizeof(struct syscall), .max_entries = 512, }; @@ -63,7 +67,7 @@ int sys_enter(struct syscall_enter_args *args) struct syscall_enter_args args; struct augmented_filename filename; } augmented_args; - bool *enabled; + struct syscall *syscall; unsigned int len = sizeof(augmented_args); const void *filename_arg = NULL; @@ -72,8 +76,8 @@ int sys_enter(struct syscall_enter_args *args) probe_read(&augmented_args.args, sizeof(augmented_args.args), args); - enabled = bpf_map_lookup_elem(&syscalls, &augmented_args.args.syscall_nr); - if (enabled == NULL || !*enabled) + syscall = bpf_map_lookup_elem(&syscalls, &augmented_args.args.syscall_nr); + if (syscall == NULL || !syscall->enabled) return 0; /* * Yonghong and Edward Cree sayz: @@ -144,15 +148,15 @@ SEC("raw_syscalls:sys_exit") int sys_exit(struct syscall_exit_args *args) { struct syscall_exit_args exit_args; - bool *enabled; + struct syscall *syscall; if (pid_filter__has(&pids_filtered, getpid())) return 0; probe_read(&exit_args, sizeof(exit_args), args); - enabled = bpf_map_lookup_elem(&syscalls, &exit_args.syscall_nr); - if (enabled == NULL || !*enabled) + syscall = bpf_map_lookup_elem(&syscalls, &exit_args.syscall_nr); + if (syscall == NULL || !syscall->enabled) return 0; return 1; |