diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-08-23 15:38:08 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-08-26 11:58:29 -0300 |
| commit | 01128065ca5112123e6992dc0522484349c6ced7 (patch) | |
| tree | dd49d6058e7f11ce6eb9f81f12c0fd93f4ed867d | |
| parent | 2ad926db78777148b07fced1e4bc88e20ad00268 (diff) | |
perf augmented_raw_syscalls: Postpone tmp map lookup to after pid_filter
No sense in doing that lookup before figuring out if it will be used,
i.e. if the pid is being filtered that tmp space lookup will be useless.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-o74yggieorucfg4j74tb6rta@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/examples/bpf/augmented_raw_syscalls.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/tools/perf/examples/bpf/augmented_raw_syscalls.c b/tools/perf/examples/bpf/augmented_raw_syscalls.c index b85b177c6726..0a8d217d65c7 100644 --- a/tools/perf/examples/bpf/augmented_raw_syscalls.c +++ b/tools/perf/examples/bpf/augmented_raw_syscalls.c @@ -250,13 +250,13 @@ int sys_enter(struct syscall_enter_args *args) struct syscall *syscall; int key = 0; + if (pid_filter__has(&pids_filtered, getpid())) + return 0; + augmented_args = bpf_map_lookup_elem(&augmented_args_tmp, &key); if (augmented_args == NULL) return 1; - if (pid_filter__has(&pids_filtered, getpid())) - return 0; - probe_read(&augmented_args->args, sizeof(augmented_args->args), args); /* |