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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>
This commit is contained in:
Arnaldo Carvalho de Melo 2019-08-23 15:38:08 -03:00
parent 2ad926db78
commit 01128065ca
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
tools/perf/examples/bpf/augmented_raw_syscalls.c
View File

@ -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);
/*