diff --git a/tools/perf/arch/arm/util/dwarf-regs.c b/tools/perf/arch/arm/util/dwarf-regs.c
index e8d5c551c69c..33ec5b339da8 100644
--- a/tools/perf/arch/arm/util/dwarf-regs.c
+++ b/tools/perf/arch/arm/util/dwarf-regs.c
@@ -8,10 +8,7 @@
  * published by the Free Software Foundation.
  */
 
-#include <stdlib.h>
-#ifndef __UCLIBC__
-#include <libio.h>
-#endif
+#include <stddef.h>
 #include <dwarf-regs.h>
 
 struct pt_regs_dwarfnum {
diff --git a/tools/perf/arch/powerpc/util/dwarf-regs.c b/tools/perf/arch/powerpc/util/dwarf-regs.c
index 7cdd61d0e27c..733151cdf46e 100644
--- a/tools/perf/arch/powerpc/util/dwarf-regs.c
+++ b/tools/perf/arch/powerpc/util/dwarf-regs.c
@@ -9,10 +9,7 @@
  * 2 of the License, or (at your option) any later version.
  */
 
-#include <stdlib.h>
-#ifndef __UCLIBC__
-#include <libio.h>
-#endif
+#include <stddef.h>
 #include <dwarf-regs.h>
 
 
diff --git a/tools/perf/arch/s390/util/dwarf-regs.c b/tools/perf/arch/s390/util/dwarf-regs.c
index e19653e025fa..0469df02ee62 100644
--- a/tools/perf/arch/s390/util/dwarf-regs.c
+++ b/tools/perf/arch/s390/util/dwarf-regs.c
@@ -6,7 +6,7 @@
  *
  */
 
-#include <libio.h>
+#include <stddef.h>
 #include <dwarf-regs.h>
 
 #define NUM_GPRS 16
diff --git a/tools/perf/arch/sh/util/dwarf-regs.c b/tools/perf/arch/sh/util/dwarf-regs.c
index a11edb007a6c..0d0897f57a10 100644
--- a/tools/perf/arch/sh/util/dwarf-regs.c
+++ b/tools/perf/arch/sh/util/dwarf-regs.c
@@ -19,7 +19,7 @@
  *
  */
 
-#include <libio.h>
+#include <stddef.h>
 #include <dwarf-regs.h>
 
 /*
diff --git a/tools/perf/arch/sparc/util/dwarf-regs.c b/tools/perf/arch/sparc/util/dwarf-regs.c
index 0ab88483720c..92eda412fed3 100644
--- a/tools/perf/arch/sparc/util/dwarf-regs.c
+++ b/tools/perf/arch/sparc/util/dwarf-regs.c
@@ -9,7 +9,7 @@
  * 2 of the License, or (at your option) any later version.
  */
 
-#include <libio.h>
+#include <stddef.h>
 #include <dwarf-regs.h>
 
 #define SPARC_MAX_REGS	96
diff --git a/tools/perf/arch/x86/util/dwarf-regs.c b/tools/perf/arch/x86/util/dwarf-regs.c
index a794d3081928..be22dd463232 100644
--- a/tools/perf/arch/x86/util/dwarf-regs.c
+++ b/tools/perf/arch/x86/util/dwarf-regs.c
@@ -20,7 +20,7 @@
  *
  */
 
-#include <libio.h>
+#include <stddef.h>
 #include <dwarf-regs.h>
 
 /*