Add new HEAD_TEXT_SECTION macro.

[safe/jmp/linux-2.6] / include / asm-generic / vmlinux.lds.h

diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index f3180a8..eaa06ef 100644 (file)
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -1,3 +1,5 @@
+#include <linux/section-names.h>
+
 #ifndef LOAD_OFFSET
 #define LOAD_OFFSET 0
 #endif
@@ -61,6 +63,30 @@
 #define BRANCH_PROFILE()
 #endif
 
+#ifdef CONFIG_EVENT_TRACER
+#define FTRACE_EVENTS()        VMLINUX_SYMBOL(__start_ftrace_events) = .;      \
+                       *(_ftrace_events)                               \
+                       VMLINUX_SYMBOL(__stop_ftrace_events) = .;
+#else
+#define FTRACE_EVENTS()
+#endif
+
+#ifdef CONFIG_TRACING
+#define TRACE_PRINTKS() VMLINUX_SYMBOL(__start___trace_bprintk_fmt) = .;      \
+                        *(__trace_printk_fmt) /* Trace_printk fmt' pointer */ \
+                        VMLINUX_SYMBOL(__stop___trace_bprintk_fmt) = .;
+#else
+#define TRACE_PRINTKS()
+#endif
+
+#ifdef CONFIG_FTRACE_SYSCALLS
+#define TRACE_SYSCALLS() VMLINUX_SYMBOL(__start_syscalls_metadata) = .;        \
+                        *(__syscalls_metadata)                         \
+                        VMLINUX_SYMBOL(__stop_syscalls_metadata) = .;
+#else
+#define TRACE_SYSCALLS()
+#endif
+
 /* .data section */
 #define DATA_DATA                                                      \
        *(.data)                                                        \
@@ -80,8 +106,16 @@
        VMLINUX_SYMBOL(__start___tracepoints) = .;                      \
        *(__tracepoints)                                                \
        VMLINUX_SYMBOL(__stop___tracepoints) = .;                       \
+       /* implement dynamic printk debug */                            \
+       . = ALIGN(8);                                                   \
+       VMLINUX_SYMBOL(__start___verbose) = .;                          \
+       *(__verbose)                                                    \
+       VMLINUX_SYMBOL(__stop___verbose) = .;                           \
        LIKELY_PROFILE()                                                \
-       BRANCH_PROFILE()
+       BRANCH_PROFILE()                                                \
+       TRACE_PRINTKS()                                                 \
+       FTRACE_EVENTS()                                                 \
+       TRACE_SYSCALLS()
 
 #define RO_DATA(align)                                                 \
        . = ALIGN((align));                                             \
@@ -299,7 +333,7 @@
 #endif
 
 /* Section used for early init (in .S files) */
-#define HEAD_TEXT  *(.head.text)
+#define HEAD_TEXT  *(HEAD_TEXT_SECTION)
 
 /* init and exit section handling */
 #define INIT_DATA                                                      \
@@ -309,15 +343,7 @@
        CPU_DISCARD(init.data)                                          \
        CPU_DISCARD(init.rodata)                                        \
        MEM_DISCARD(init.data)                                          \
-       MEM_DISCARD(init.rodata)                                        \
-       /* implement dynamic printk debug */                            \
-       VMLINUX_SYMBOL(__start___verbose_strings) = .;                  \
-       *(__verbose_strings)                                            \
-       VMLINUX_SYMBOL(__stop___verbose_strings) = .;                   \
-       . = ALIGN(8);                                                   \
-       VMLINUX_SYMBOL(__start___verbose) = .;                          \
-       *(__verbose)                                                    \
-       VMLINUX_SYMBOL(__stop___verbose) = .;
+       MEM_DISCARD(init.rodata)
 
 #define INIT_TEXT                                                      \
        *(.init.text)                                                   \
@@ -445,24 +471,22 @@
  * section in the linker script will go there too.  @phdr should have
  * a leading colon.
  *
- * This macro defines three symbols, __per_cpu_load, __per_cpu_start
- * and __per_cpu_end.  The first one is the vaddr of loaded percpu
- * init data.  __per_cpu_start equals @vaddr and __per_cpu_end is the
- * end offset.
+ * Note that this macros defines __per_cpu_load as an absolute symbol.
+ * If there is no need to put the percpu section at a predetermined
+ * address, use PERCPU().
  */
 #define PERCPU_VADDR(vaddr, phdr)                                      \
-       VMLINUX_SYMBOL(__per_cpu_load_abs) = .;                         \
-       .data.percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load_abs)      \
+       VMLINUX_SYMBOL(__per_cpu_load) = .;                             \
+       .data.percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load)          \
                                - LOAD_OFFSET) {                        \
                VMLINUX_SYMBOL(__per_cpu_start) = .;                    \
-               VMLINUX_SYMBOL(__per_cpu_load) = LOADADDR(.data.percpu) + LOAD_OFFSET;\
                *(.data.percpu.first)                                   \
                *(.data.percpu.page_aligned)                            \
                *(.data.percpu)                                         \
                *(.data.percpu.shared_aligned)                          \
                VMLINUX_SYMBOL(__per_cpu_end) = .;                      \
        } phdr                                                          \
-       . = VMLINUX_SYMBOL(__per_cpu_load_abs) + SIZEOF(.data.percpu);
+       . = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data.percpu);
 
 /**
  * PERCPU - define output section for percpu area, simple version
@@ -471,7 +495,20 @@
  * Align to @align and outputs output section for percpu area.  This
  * macro doesn't maniuplate @vaddr or @phdr and __per_cpu_load and
  * __per_cpu_start will be identical.
+ *
+ * This macro is equivalent to ALIGN(align); PERCPU_VADDR( , ) except
+ * that __per_cpu_load is defined as a relative symbol against
+ * .data.percpu which is required for relocatable x86_32
+ * configuration.
  */
 #define PERCPU(align)                                                  \
        . = ALIGN(align);                                               \
-       PERCPU_VADDR( , )
+       .data.percpu    : AT(ADDR(.data.percpu) - LOAD_OFFSET) {        \
+               VMLINUX_SYMBOL(__per_cpu_load) = .;                     \
+               VMLINUX_SYMBOL(__per_cpu_start) = .;                    \
+               *(.data.percpu.first)                                   \
+               *(.data.percpu.page_aligned)                            \
+               *(.data.percpu)                                         \
+               *(.data.percpu.shared_aligned)                          \
+               VMLINUX_SYMBOL(__per_cpu_end) = .;                      \
+       }