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authorArnaldo Carvalho de Melo <acme@redhat.com>2019-08-23 15:38:08 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2019-08-26 11:58:29 -0300
commit01128065ca5112123e6992dc0522484349c6ced7 (patch)
treedd49d6058e7f11ce6eb9f81f12c0fd93f4ed867d /tools
parent2ad926db78777148b07fced1e4bc88e20ad00268 (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>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/examples/bpf/augmented_raw_syscalls.c6
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);
/*