[XTENSA] clean-up header files

The header files in the asm-xtensa directory are not clean and
'make headers_check' fails. This is a first patch to fix most of
the header files. It removes unnecessary include statements and
adds some that are required for building the kernel. The linker
script required some updates or the linking stage would fail.

Signed-off-by: Chris Zankel <chris@zankel.net>

10 files changed, 50 insertions, 63 deletions

diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c
index 1ecf6716c327..2e8d398cf196 100644
--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -41,6 +41,7 @@
 #include <asm/platform.h>
 #include <asm/page.h>
 #include <asm/setup.h>
+#include <asm/param.h>
 
 #if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE)
 struct screen_info screen_info = { 0, 24, 0, 0, 0, 80, 0, 0, 0, 24, 1, 16};
diff --git a/arch/xtensa/kernel/vmlinux.lds.S b/arch/xtensa/kernel/vmlinux.lds.S
index 4b7b4ff79973..b0582c3c5f8d 100644
--- a/arch/xtensa/kernel/vmlinux.lds.S
+++ b/arch/xtensa/kernel/vmlinux.lds.S
@@ -84,9 +84,7 @@ SECTIONS
   {
     /* The .head.text section must be the first section! */
     *(.head.text)
-    *(.literal)
-    TEXT_TEXT
-    *(.srom.text)
+    *(.literal .text)
     VMLINUX_SYMBOL(__sched_text_start) = .;
     *(.sched.literal .sched.text)
     VMLINUX_SYMBOL(__sched_text_end) = .;
@@ -96,6 +94,7 @@ SECTIONS
 
   }
   _etext = .;
+  PROVIDE (etext = .);
 
   . = ALIGN(16);
 
@@ -103,32 +102,6 @@ SECTIONS
 
   /*  Relocation table */
 
-  . = ALIGN(16);
-  __boot_reloc_table_start = ABSOLUTE(.);
-
-  __relocate : {
-
-    RELOCATE_ENTRY(_WindowVectors_text,
-                   .WindowVectors.text);
-#if 0
-    RELOCATE_ENTRY(_KernelExceptionVector_literal,
-                   .KernelExceptionVector.literal);
-#endif
-    RELOCATE_ENTRY(_KernelExceptionVector_text,
-                   .KernelExceptionVector.text);
-#if 0
-    RELOCATE_ENTRY(_UserExceptionVector_literal,
-                   .UserExceptionVector.literal);
-#endif
-    RELOCATE_ENTRY(_UserExceptionVector_text,
-                   .UserExceptionVector.text);
-    RELOCATE_ENTRY(_DoubleExceptionVector_literal,
-                   .DoubleExceptionVector.literal);
-    RELOCATE_ENTRY(_DoubleExceptionVector_text,
-                   .DoubleExceptionVector.text);
-  }
-  __boot_reloc_table_end = ABSOLUTE(.) ;
-
   .fixup   : { *(.fixup) }
 
   . = ALIGN(16);
@@ -145,8 +118,7 @@ SECTIONS
   _fdata = .;
   .data :
   {
-    DATA_DATA
-    CONSTRUCTORS
+    *(.data) CONSTRUCTORS
     . = ALIGN(XCHAL_ICACHE_LINESIZE);
     *(.data.cacheline_aligned)
   }
@@ -174,6 +146,22 @@ SECTIONS
     __tagtable_begin = .;
     *(.taglist)
     __tagtable_end = .;
+
+    . = ALIGN(16);
+    __boot_reloc_table_start = ABSOLUTE(.);
+
+    RELOCATE_ENTRY(_WindowVectors_text,
+                   .WindowVectors.text);
+    RELOCATE_ENTRY(_KernelExceptionVector_text,
+                   .KernelExceptionVector.text);
+    RELOCATE_ENTRY(_UserExceptionVector_text,
+                   .UserExceptionVector.text);
+    RELOCATE_ENTRY(_DoubleExceptionVector_literal,
+                   .DoubleExceptionVector.literal);
+    RELOCATE_ENTRY(_DoubleExceptionVector_text,
+                   .DoubleExceptionVector.text);
+  
+    __boot_reloc_table_end = ABSOLUTE(.) ;
   }
 
   . = ALIGN(XCHAL_ICACHE_LINESIZE);
@@ -194,16 +182,6 @@ SECTIONS
 
   SECURITY_INIT
 
-  . = ALIGN(4);
-
-  __start___ftr_fixup = .;
-  __ftr_fixup : { *(__ftr_fixup) }
-  __stop___ftr_fixup = .;
-
-  . = ALIGN(4096);
-  __per_cpu_start = .;
-  .data.percpu  : { *(.data.percpu) }
-  __per_cpu_end = .;
 
 #ifdef CONFIG_BLK_DEV_INITRD
   . = ALIGN(4096);
@@ -212,6 +190,12 @@ SECTIONS
   __initramfs_end = .;
 #endif
 
+  . = ALIGN(4096);
+  __per_cpu_start = .;
+  .data.percpu  : { *(.data.percpu) }
+  __per_cpu_end = .;
+
+
   /* We need this dummy segment here */
 
   . = ALIGN(4);
@@ -273,9 +257,9 @@ SECTIONS
 
   /* BSS section */
   _bss_start = .;
-  .sbss : { *(.sbss) *(.scommon) }
-  .bss : { *(COMMON) *(.bss) }
+  .bss : { *(.bss.page_aligned) *(.bss) }
   _bss_end = .;
+
   _end = .;
 
   /* only used by the boot loader  */
@@ -293,16 +277,16 @@ SECTIONS
     *(.ResetVector.text)
   }
 
-
   /* Sections to be discarded */
   /DISCARD/ :
   {
-        *(.text.exit)
-        *(.text.exit.literal)
-        *(.data.exit)
+        *(.exit.literal .exit.text)
+        *(.exit.data)
         *(.exitcall.exit)
   }
 
+  .xt.lit : { *(.xt.lit) }
+  .xt.prop : { *(.xt.prop) }
 
   .debug  0 :  { *(.debug) }
   .line  0 :  { *(.line) }
diff --git a/include/asm-xtensa/bitops.h b/include/asm-xtensa/bitops.h
index 96303dff3ee4..1c1e0d933eea 100644
--- a/include/asm-xtensa/bitops.h
+++ b/include/asm-xtensa/bitops.h
@@ -57,9 +57,6 @@ static inline int __ffs(unsigned long x)
         return 31 - __cntlz(x & -x);
 }
 
-
-#ifdef __KERNEL__
-
 /*
  * ffs: Find first bit set in word. This is defined the same way as
  * the libc and compiler builtin ffs routines, therefore
@@ -97,11 +94,15 @@ static inline int fls (unsigned int x)
 #include <asm-generic/bitops/ext2-non-atomic.h>
 
 #ifdef __XTENSA_EL__
-# define ext2_set_bit_atomic(lock,nr,addr) test_and_set_bit((nr),(addr))
-# define ext2_clear_bit_atomic(lock,nr,addr) test_and_clear_bit((nr),(addr))
+# define ext2_set_bit_atomic(lock,nr,addr)                              \
+        test_and_set_bit((nr), (unsigned long*)(addr))
+# define ext2_clear_bit_atomic(lock,nr,addr)                            \
+        test_and_clear_bit((nr), (unsigned long*)(addr))
 #elif defined(__XTENSA_EB__)
-# define ext2_set_bit_atomic(lock,nr,addr) test_and_set_bit((nr) ^ 0x18, (addr))
-# define ext2_clear_bit_atomic(lock,nr,addr) test_and_clear_bit((nr)^0x18,(addr))
+# define ext2_set_bit_atomic(lock,nr,addr)                              \
+        test_and_set_bit((nr) ^ 0x18, (unsigned long*)(addr))
+# define ext2_clear_bit_atomic(lock,nr,addr)                            \
+        test_and_clear_bit((nr) ^ 0x18, (unsigned long*)(addr))
 #else
 # error processor byte order undefined!
 #endif
diff --git a/include/asm-xtensa/byteorder.h b/include/asm-xtensa/byteorder.h
index 0f540a5f4c01..765edf17a9a4 100644
--- a/include/asm-xtensa/byteorder.h
+++ b/include/asm-xtensa/byteorder.h
@@ -12,6 +12,7 @@
 #define _XTENSA_BYTEORDER_H
 
 #include <asm/types.h>
+#include <linux/compiler.h>
 
 static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)
 {
@@ -78,4 +79,4 @@ static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x)
 # error processor byte order undefined!
 #endif
 
-#endif /* __ASM_XTENSA_BYTEORDER_H */
+#endif /* _XTENSA_BYTEORDER_H */
diff --git a/include/asm-xtensa/mmu_context.h b/include/asm-xtensa/mmu_context.h
index 92f948392ebc..c0fd8e5b4513 100644
--- a/include/asm-xtensa/mmu_context.h
+++ b/include/asm-xtensa/mmu_context.h
@@ -14,6 +14,7 @@
 #define _XTENSA_MMU_CONTEXT_H
 
 #include <linux/stringify.h>
+#include <linux/sched.h>
 
 #include <asm/pgtable.h>
 #include <asm/cacheflush.h>
diff --git a/include/asm-xtensa/page.h b/include/asm-xtensa/page.h
index c631d006194b..1213cde75438 100644
--- a/include/asm-xtensa/page.h
+++ b/include/asm-xtensa/page.h
@@ -131,6 +131,6 @@ void copy_user_page(void *to,void* from,unsigned long vaddr,struct page* page);
 #define VM_DATA_DEFAULT_FLAGS   (VM_READ | VM_WRITE | VM_EXEC | \
                                  VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
-#endif /* __KERNEL__ */
 #include <asm-generic/memory_model.h>
+#endif /* __KERNEL__ */
 #endif /* _XTENSA_PAGE_H */
diff --git a/include/asm-xtensa/param.h b/include/asm-xtensa/param.h
index 6f281392e3f8..ce3a336cad07 100644
--- a/include/asm-xtensa/param.h
+++ b/include/asm-xtensa/param.h
@@ -11,15 +11,13 @@
 #ifndef _XTENSA_PARAM_H
 #define _XTENSA_PARAM_H
 
-#include <asm/variant/core.h>
-
 #ifdef __KERNEL__
 # define HZ             100             /* internal timer frequency */
 # define USER_HZ        100             /* for user interfaces in "ticks" */
 # define CLOCKS_PER_SEC (USER_HZ)       /* frequnzy at which times() counts */
 #endif
 
-#define EXEC_PAGESIZE   (1 << XCHAL_MMU_MIN_PTE_PAGE_SIZE)
+#define EXEC_PAGESIZE   4096
 
 #ifndef NGROUPS
 #define NGROUPS         32
diff --git a/include/asm-xtensa/ptrace.h b/include/asm-xtensa/ptrace.h
index 1b7fe363fad1..cad83e814d69 100644
--- a/include/asm-xtensa/ptrace.h
+++ b/include/asm-xtensa/ptrace.h
@@ -11,8 +11,6 @@
 #ifndef _XTENSA_PTRACE_H
 #define _XTENSA_PTRACE_H
 
-#include <asm/variant/core.h>
-
 /*
  * Kernel stack
  *
@@ -113,6 +111,9 @@ struct pt_regs {
 };
 
 #ifdef __KERNEL__
+
+#include <asm/variant/core.h>
+
 # define task_pt_regs(tsk) ((struct pt_regs*) \
   (task_stack_page(tsk) + KERNEL_STACK_SIZE - (XCHAL_NUM_AREGS-16)*4) - 1)
 # define user_mode(regs) (((regs)->ps & 0x00000020)!=0)
diff --git a/include/asm-xtensa/shmparam.h b/include/asm-xtensa/shmparam.h
index d3b65bfa71c3..c8cc16c3da9e 100644
--- a/include/asm-xtensa/shmparam.h
+++ b/include/asm-xtensa/shmparam.h
@@ -9,8 +9,6 @@
 #ifndef _XTENSA_SHMPARAM_H
 #define _XTENSA_SHMPARAM_H
 
-#include <asm/processor.h>
-
 /*
  * Xtensa can have variable size caches, and if
  * the size of single way is larger than the page size,
diff --git a/include/asm-xtensa/thread_info.h b/include/asm-xtensa/thread_info.h
index 5ae34ab71597..3fa29799b435 100644
--- a/include/asm-xtensa/thread_info.h
+++ b/include/asm-xtensa/thread_info.h
@@ -116,6 +116,7 @@ static inline struct thread_info *current_thread_info(void)
 #define TIF_SINGLESTEP          4       /* restore singlestep on return to user mode */
 #define TIF_IRET                5       /* return with iret */
 #define TIF_MEMDIE              6
+#define TIF_RESTORE_SIGMASK     7       /* restore signal mask in do_signal() */
 #define TIF_POLLING_NRFLAG      16      /* true if poll_idle() is polling TIF_NEED_RESCHED */
 
 #define _TIF_SYSCALL_TRACE      (1<<TIF_SYSCALL_TRACE)
@@ -125,6 +126,7 @@ static inline struct thread_info *current_thread_info(void)
 #define _TIF_SINGLESTEP         (1<<TIF_SINGLESTEP)
 #define _TIF_IRET               (1<<TIF_IRET)
 #define _TIF_POLLING_NRFLAG     (1<<TIF_POLLING_NRFLAG)
+#define _TIF_RESTORE_SIGMASK    (1<<TIF_RESTORE_SIGMASK)
 
 #define _TIF_WORK_MASK          0x0000FFFE      /* work to do on interrupt/exception return */
 #define _TIF_ALLWORK_MASK       0x0000FFFF      /* work to do on any return to u-space */