1 files changed, 3 insertions, 4 deletions

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index ed9b5b6905fa..397290a0a76e 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -71,7 +71,7 @@ static int			thread_num			=      0;
 static bool                     inherit                         =  false;
 static int                      profile_cpu                     =     -1;
 static int                      nr_cpus                         =      0;
-static unsigned int             realtime_prio                   =      0;
+static int                      realtime_prio                   =      0;
 static bool                     group                           =  false;
 static unsigned int             page_size;
 static unsigned int             mmap_pages                      =     16;
@@ -96,7 +96,7 @@ struct source_line {
         struct source_line      *next;
 };
 
-static char                     *sym_filter                     =   NULL;
+static const char               *sym_filter                     =   NULL;
 struct sym_entry                *sym_filter_entry               =   NULL;
 struct sym_entry                *sym_filter_entry_sched         =   NULL;
 static int                      sym_pcnt_filter                 =      5;
@@ -1357,8 +1357,7 @@ static const struct option options[] = {
                    "file", "vmlinux pathname"),
         OPT_BOOLEAN('K', "hide_kernel_symbols", &hide_kernel_symbols,
                     "hide kernel symbols"),
-        OPT_INTEGER('m', "mmap-pages", &mmap_pages,
-                    "number of mmap data pages"),
+        OPT_UINTEGER('m', "mmap-pages", &mmap_pages, "number of mmap data pages"),
         OPT_INTEGER('r', "realtime", &realtime_prio,
                     "collect data with this RT SCHED_FIFO priority"),
         OPT_INTEGER('d', "delay", &delay_secs,