[PATCH] rtla: use the definition for stdout fd when calling isatty()

[Eder Zulian]

Use the STDOUT_FILENO definition when testing whether the standard
output file descriptor refers to a terminal (for better redability).

Signed-off-by: Eder Zulian <ezul...@redhat.com>
---
 tools/tracing/rtla/src/osnoise_top.c  | 2 +-
 tools/tracing/rtla/src/timerlat_top.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/tracing/rtla/src/osnoise_top.c 
b/tools/tracing/rtla/src/osnoise_top.c
index f594a44df840..73106683c281 100644
--- a/tools/tracing/rtla/src/osnoise_top.c
+++ b/tools/tracing/rtla/src/osnoise_top.c
@@ -627,7 +627,7 @@ osnoise_top_apply_config(struct osnoise_tool *tool, struct 
osnoise_top_params *p
                auto_house_keeping(&params->monitored_cpus);
        }
 
-       if (isatty(1) && !params->quiet)
+       if (isatty(STDOUT_FILENO) && !params->quiet)
                params->pretty_output = 1;
 
        return 0;
diff --git a/tools/tracing/rtla/src/timerlat_top.c 
b/tools/tracing/rtla/src/timerlat_top.c
index 8c16419fe22a..94a2f5bbaeb7 100644
--- a/tools/tracing/rtla/src/timerlat_top.c
+++ b/tools/tracing/rtla/src/timerlat_top.c
@@ -850,7 +850,7 @@ timerlat_top_apply_config(struct osnoise_tool *top, struct 
timerlat_top_params *
                }
        }
 
-       if (isatty(1) && !params->quiet)
+       if (isatty(STDOUT_FILENO) && !params->quiet)
                params->pretty_output = 1;
 
        return 0;
-- 
2.46.0