1 files changed, 5 insertions, 1 deletions

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index db6adecf46f1..17d1dcb3c667 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -41,7 +41,7 @@ static u64			user_interval			= ULLONG_MAX;
 static u64                      default_interval                =      0;
 
 static unsigned int             page_size;
-static unsigned int             mmap_pages                      =    128;
+static unsigned int             mmap_pages                      = UINT_MAX;
 static unsigned int             user_freq                       = UINT_MAX;
 static int                      freq                            =   1000;
 static int                      output;
@@ -513,6 +513,10 @@ static int __cmd_record(int argc, const char **argv)
         if (have_tracepoints(&evsel_list->entries))
                 perf_header__set_feat(&session->header, HEADER_TRACE_INFO);
 
+        /* 512 kiB: default amount of unprivileged mlocked memory */
+        if (mmap_pages == UINT_MAX)
+                mmap_pages = (512 * 1024) / page_size;
+
         if (forks) {
                 child_pid = fork();
                 if (child_pid < 0) {