perf tools: Set the maximum allowed stack from /proc/sys/kernel/perf_event_max_stack

[cascardo/linux.git] / tools / perf / Documentation / perf-top.txt

diff --git a/tools/perf/Documentation/perf-top.txt b/tools/perf/Documentation/perf-top.txt
index 19f046f..91d638d 100644 (file)
--- a/tools/perf/Documentation/perf-top.txt
+++ b/tools/perf/Documentation/perf-top.txt
@@ -177,7 +177,7 @@ Default is to monitor all CPUS.
        between information loss and faster processing especially for
        workloads that can have a very long callchain stack.
 
-       Default: 127
+       Default: /proc/sys/kernel/perf_event_max_stack when present, 127 otherwise.
 
 --ignore-callees=<regex>::
         Ignore callees of the function(s) matching the given regex.