diff --git a/sysdeps/unix/sysv/linux/alpha/sys/procfs.h b/sysdeps/unix/sysv/linux/alpha/sys/procfs.h
index f47adeebfe..87f8e4cd17 100644
--- a/sysdeps/unix/sysv/linux/alpha/sys/procfs.h
+++ b/sysdeps/unix/sysv/linux/alpha/sys/procfs.h
@@ -111,17 +111,6 @@ typedef fpregset_t prfpregset_t;
    therefore habe only ine PID type.  */
 typedef __pid_t lwpid_t;
 
-/* Addresses.  */
-typedef void *psaddr_t;
-
-/* Register sets.  Linux has different names.  */
-typedef gregset_t prgregset_t;
-typedef fpregset_t prfpregset_t;
-
-/* We don't have any differences between processes and threads,
-   therefore habe only ine PID type.  */
-typedef __pid_t lwpid_t;
-
 
 typedef struct elf_prstatus prstatus_t;
 typedef struct elf_prpsinfo prpsinfo_t;
diff --git a/sysdeps/unix/sysv/linux/arm/sys/procfs.h b/sysdeps/unix/sysv/linux/arm/sys/procfs.h
index a228179796..5198033ba0 100644
--- a/sysdeps/unix/sysv/linux/arm/sys/procfs.h
+++ b/sysdeps/unix/sysv/linux/arm/sys/procfs.h
@@ -101,17 +101,6 @@ typedef fpregset_t prfpregset_t;
    therefore habe only ine PID type.  */
 typedef __pid_t lwpid_t;
 
-/* Addresses.  */
-typedef void *psaddr_t;
-
-/* Register sets.  Linux has different names.  */
-typedef gregset_t prgregset_t;
-typedef fpregset_t prfpregset_t;
-
-/* We don't have any differences between processes and threads,
-   therefore habe only ine PID type.  */
-typedef __pid_t lwpid_t;
-
 
 typedef struct elf_prstatus prstatus_t;
 typedef struct elf_prpsinfo prpsinfo_t;
diff --git a/sysdeps/unix/sysv/linux/mips/sys/procfs.h b/sysdeps/unix/sysv/linux/mips/sys/procfs.h
index 9c6bac9dc6..7e17bc0c40 100644
--- a/sysdeps/unix/sysv/linux/mips/sys/procfs.h
+++ b/sysdeps/unix/sysv/linux/mips/sys/procfs.h
@@ -100,17 +100,6 @@ struct elf_prpsinfo
     char pr_psargs[ELF_PRARGSZ];	/* Initial part of arg list.  */
   };
 
-/* Addresses.  */
-typedef void *psaddr_t;
-
-/* Register sets.  Linux has different names.  */
-typedef gregset_t prgregset_t;
-typedef fpregset_t prfpregset_t;
-
-/* We don't have any differences between processes and threads,
-   therefore habe only ine PID type.  */
-typedef __pid_t lwpid_t;
-
 
 /* Addresses.  */
 typedef void *psaddr_t;