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* [PATCH 6/7] x86/ACPI: __init-annotate
@ 2011-03-31 15:57 Jan Beulich
  0 siblings, 0 replies; only message in thread
From: Jan Beulich @ 2011-03-31 15:57 UTC (permalink / raw)
  To: xen-devel@lists.xensource.com

[-- Attachment #1: Type: text/plain, Size: 11369 bytes --]

xen/arch/x86/acpi/boot.c consists of almost only code/data in .init.*,
so move the few bits that aren't into a new file and then use the
recently introduced .init.o mechanism to move all the literal strings
into .init.rodata.

Signed-off-by: Jan Beulich <jbeulich@novell.com>

--- a/xen/arch/x86/acpi/Makefile
+++ b/xen/arch/x86/acpi/Makefile
@@ -1,4 +1,4 @@
 subdir-y += cpufreq
 
-obj-y += boot.o power.o suspend.o cpu_idle.o cpuidle_menu.o
-obj-bin-y += wakeup_prot.o
+obj-y += lib.o power.o suspend.o cpu_idle.o cpuidle_menu.o
+obj-bin-y += boot.init.o wakeup_prot.o
--- a/xen/arch/x86/acpi/boot.c
+++ b/xen/arch/x86/acpi/boot.c
@@ -69,58 +69,10 @@ bool_t acpi_skip_timer_override __initda
 static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
 #endif
 
-u32 __read_mostly acpi_smi_cmd;
-u8 __read_mostly acpi_enable_value;
-u8 __read_mostly acpi_disable_value;
-
-u32 __read_mostly x86_acpiid_to_apicid[MAX_MADT_ENTRIES] =
-    {[0 ... MAX_MADT_ENTRIES - 1] = BAD_APICID };
-
 /* --------------------------------------------------------------------------
                               Boot-time Configuration
    -------------------------------------------------------------------------- */
 
-/*
- * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END,
- * to map the target physical address. The problem is that set_fixmap()
- * provides a single page, and it is possible that the page is not
- * sufficient.
- * By using this area, we can map up to MAX_IO_APICS pages temporarily,
- * i.e. until the next __va_range() call.
- *
- * Important Safety Note:  The fixed I/O APIC page numbers are *subtracted*
- * from the fixed base.  That's why we start at FIX_IO_APIC_BASE_END and
- * count idx down while incrementing the phys address.
- */
-char *__acpi_map_table(unsigned long phys, unsigned long size)
-{
-	unsigned long base, offset, mapped_size;
-	int idx;
-
-	/* XEN: RAM holes above 1MB are not permanently mapped. */
-	if ((phys + size) <= (1 * 1024 * 1024))
-		return __va(phys);
-
-	offset = phys & (PAGE_SIZE - 1);
-	mapped_size = PAGE_SIZE - offset;
-	set_fixmap(FIX_ACPI_END, phys);
-	base = fix_to_virt(FIX_ACPI_END);
-
-	/*
-	 * Most cases can be covered by the below.
-	 */
-	idx = FIX_ACPI_END;
-	while (mapped_size < size) {
-		if (--idx < FIX_ACPI_BEGIN)
-			return NULL;	/* cannot handle this */
-		phys += PAGE_SIZE;
-		set_fixmap(idx, phys);
-		mapped_size += PAGE_SIZE;
-	}
-
-	return ((char *) base + offset);
-}
-
 #ifdef CONFIG_X86_LOCAL_APIC
 static int __init acpi_parse_madt(struct acpi_table_header *table)
 {
@@ -927,17 +879,3 @@ int __init acpi_boot_init(void)
 
 	return 0;
 }
-
-unsigned int acpi_get_processor_id(unsigned int cpu)
-{
-	unsigned int acpiid, apicid;
-
-	if ((apicid = x86_cpu_to_apicid[cpu]) == BAD_APICID)
-		return INVALID_ACPIID;
-
-	for (acpiid = 0; acpiid < ARRAY_SIZE(x86_acpiid_to_apicid); acpiid++)
-		if (x86_acpiid_to_apicid[acpiid] == apicid)
-			return acpiid;
-
-	return INVALID_ACPIID;
-}
--- /dev/null
+++ b/xen/arch/x86/acpi/lib.c
@@ -0,0 +1,83 @@
+/*
+ *  lib.c - Architecture-Specific Low-Level ACPI Support
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <xen/config.h>
+#include <xen/errno.h>
+#include <xen/init.h>
+#include <xen/acpi.h>
+#include <asm/apic.h>
+#include <asm/fixmap.h>
+
+u32 __read_mostly acpi_smi_cmd;
+u8 __read_mostly acpi_enable_value;
+u8 __read_mostly acpi_disable_value;
+
+u32 __read_mostly x86_acpiid_to_apicid[MAX_MADT_ENTRIES] =
+    {[0 ... MAX_MADT_ENTRIES - 1] = BAD_APICID };
+
+/*
+ * Important Safety Note:  The fixed ACPI page numbers are *subtracted*
+ * from the fixed base.  That's why we start at FIX_ACPI_END and
+ * count idx down while incrementing the phys address.
+ */
+char *__acpi_map_table(unsigned long phys, unsigned long size)
+{
+	unsigned long base, offset, mapped_size;
+	int idx;
+
+	/* XEN: RAM holes above 1MB are not permanently mapped. */
+	if ((phys + size) <= (1 * 1024 * 1024))
+		return __va(phys);
+
+	offset = phys & (PAGE_SIZE - 1);
+	mapped_size = PAGE_SIZE - offset;
+	set_fixmap(FIX_ACPI_END, phys);
+	base = fix_to_virt(FIX_ACPI_END);
+
+	/*
+	 * Most cases can be covered by the below.
+	 */
+	idx = FIX_ACPI_END;
+	while (mapped_size < size) {
+		if (--idx < FIX_ACPI_BEGIN)
+			return NULL;	/* cannot handle this */
+		phys += PAGE_SIZE;
+		set_fixmap(idx, phys);
+		mapped_size += PAGE_SIZE;
+	}
+
+	return ((char *) base + offset);
+}
+
+unsigned int acpi_get_processor_id(unsigned int cpu)
+{
+	unsigned int acpiid, apicid;
+
+	if ((apicid = x86_cpu_to_apicid[cpu]) == BAD_APICID)
+		return INVALID_ACPIID;
+
+	for (acpiid = 0; acpiid < ARRAY_SIZE(x86_acpiid_to_apicid); acpiid++)
+		if (x86_acpiid_to_apicid[acpiid] == apicid)
+			return acpiid;
+
+	return INVALID_ACPIID;
+}
--- a/xen/drivers/acpi/tables/Makefile
+++ b/xen/drivers/acpi/tables/Makefile
@@ -1,5 +1,5 @@
-obj-y += tbfadt.o
-obj-y += tbinstal.o
+obj-bin-y += tbfadt.init.o
+obj-bin-y += tbinstal.init.o
 obj-y += tbutils.o
-obj-y += tbxface.o
-obj-y += tbxfroot.o
+obj-bin-y += tbxface.init.o
+obj-bin-y += tbxfroot.init.o
--- a/xen/drivers/acpi/tables/tbxface.c
+++ b/xen/drivers/acpi/tables/tbxface.c
@@ -67,7 +67,8 @@ ACPI_MODULE_NAME("tbxface")
 acpi_status __init acpi_allocate_root_table(u32 initial_table_count)
 {
 
-	acpi_gbl_root_table_list.size = initial_table_count;
+	acpi_gbl_root_table_list.size = initial_table_count -
+					ACPI_ROOT_TABLE_SIZE_INCREMENT;
 	acpi_gbl_root_table_list.flags = ACPI_ROOT_ALLOW_RESIZE;
 
 	return (acpi_tb_resize_root_table_list());
--- a/xen/drivers/acpi/utilities/Makefile
+++ b/xen/drivers/acpi/utilities/Makefile
@@ -1,2 +1,2 @@
 obj-y += utglobal.o
-obj-y += utmisc.o
+obj-bin-y += utmisc.init.o
--- a/xen/drivers/acpi/utilities/utmisc.c
+++ b/xen/drivers/acpi/utilities/utmisc.c
@@ -135,7 +135,7 @@ const char *__init acpi_ut_validate_exce
  ******************************************************************************/
 
 void ACPI_INTERNAL_VAR_XFACE __init
-acpi_ut_error(char *module_name, u32 line_number, char *format, ...)
+acpi_ut_error(const char *module_name, u32 line_number, char *format, ...)
 {
 	va_list args;
 
@@ -148,7 +148,7 @@ acpi_ut_error(char *module_name, u32 lin
 }
 
 void ACPI_INTERNAL_VAR_XFACE __init
-acpi_ut_warning(char *module_name, u32 line_number, char *format, ...)
+acpi_ut_warning(const char *module_name, u32 line_number, char *format, ...)
 {
 	va_list args;
 
@@ -162,7 +162,7 @@ acpi_ut_warning(char *module_name, u32 l
 }
 
 void ACPI_INTERNAL_VAR_XFACE __init
-acpi_ut_info(char *module_name, u32 line_number, char *format, ...)
+acpi_ut_info(const char *module_name, u32 line_number, char *format, ...)
 {
 	va_list args;
 
--- a/xen/include/acpi/acmacros.h
+++ b/xen/include/acpi/acmacros.h
@@ -413,7 +413,7 @@
  * error messages. The __FILE__ macro is not very useful for this, because it
  * often includes the entire pathname to the module
  */
-#define ACPI_MODULE_NAME(name)          static char ACPI_UNUSED_VAR *_acpi_module_name = name;
+#define ACPI_MODULE_NAME(name)          static const char ACPI_UNUSED_VAR _acpi_module_name[] = name;
 #else
 #define ACPI_MODULE_NAME(name)
 #endif
--- a/xen/include/acpi/acutils.h
+++ b/xen/include/acpi/acutils.h
@@ -121,41 +121,41 @@ void acpi_ut_track_stack_ptr(void);
 
 void
 acpi_ut_trace(u32 line_number,
-	      const char *function_name, char *module_name, u32 component_id);
+	      const char *function_name, const char *module_name, u32 component_id);
 
 void
 acpi_ut_trace_ptr(u32 line_number,
 		  const char *function_name,
-		  char *module_name, u32 component_id, void *pointer);
+		  const char *module_name, u32 component_id, void *pointer);
 
 void
 acpi_ut_trace_u32(u32 line_number,
 		  const char *function_name,
-		  char *module_name, u32 component_id, u32 integer);
+		  const char *module_name, u32 component_id, u32 integer);
 
 void
 acpi_ut_trace_str(u32 line_number,
 		  const char *function_name,
-		  char *module_name, u32 component_id, char *string);
+		  const char *module_name, u32 component_id, char *string);
 
 void
 acpi_ut_exit(u32 line_number,
-	     const char *function_name, char *module_name, u32 component_id);
+	     const char *function_name, const char *module_name, u32 component_id);
 
 void
 acpi_ut_status_exit(u32 line_number,
 		    const char *function_name,
-		    char *module_name, u32 component_id, acpi_status status);
+		    const char *module_name, u32 component_id, acpi_status status);
 
 void
 acpi_ut_value_exit(u32 line_number,
 		   const char *function_name,
-		   char *module_name, u32 component_id, acpi_integer value);
+		   const char *module_name, u32 component_id, acpi_integer value);
 
 void
 acpi_ut_ptr_exit(u32 line_number,
 		 const char *function_name,
-		 char *module_name, u32 component_id, u8 * ptr);
+		 const char *module_name, u32 component_id, u8 * ptr);
 
 /* Error and message reporting interfaces */
 
@@ -163,32 +163,32 @@ void ACPI_INTERNAL_VAR_XFACE
 acpi_ut_debug_print(u32 requested_debug_level,
 		    u32 line_number,
 		    const char *function_name,
-		    char *module_name,
+		    const char *module_name,
 		    u32 component_id, char *format, ...) ACPI_PRINTF_LIKE(6);
 
 void ACPI_INTERNAL_VAR_XFACE
 acpi_ut_debug_print_raw(u32 requested_debug_level,
 			u32 line_number,
 			const char *function_name,
-			char *module_name,
+			const char *module_name,
 			u32 component_id,
 			char *format, ...) ACPI_PRINTF_LIKE(6);
 
 void ACPI_INTERNAL_VAR_XFACE
-acpi_ut_error(char *module_name,
+acpi_ut_error(const char *module_name,
 	      u32 line_number, char *format, ...) ACPI_PRINTF_LIKE(3);
 
 void ACPI_INTERNAL_VAR_XFACE
-acpi_ut_exception(char *module_name,
+acpi_ut_exception(const char *module_name,
 		  u32 line_number,
 		  acpi_status status, char *format, ...) ACPI_PRINTF_LIKE(4);
 
 void ACPI_INTERNAL_VAR_XFACE
-acpi_ut_warning(char *module_name,
+acpi_ut_warning(const char *module_name,
 		u32 line_number, char *format, ...) ACPI_PRINTF_LIKE(3);
 
 void ACPI_INTERNAL_VAR_XFACE
-acpi_ut_info(char *module_name,
+acpi_ut_info(const char *module_name,
 	     u32 line_number, char *format, ...) ACPI_PRINTF_LIKE(3);
 
 /*



[-- Attachment #2: acpi-init.patch --]
[-- Type: text/plain, Size: 11365 bytes --]

xen/arch/x86/acpi/boot.c consists of almost only code/data in .init.*,
so move the few bits that aren't into a new file and then use the
recently introduced .init.o mechanism to move all the literal strings
into .init.rodata.

Signed-off-by: Jan Beulich <jbeulich@novell.com>

--- a/xen/arch/x86/acpi/Makefile
+++ b/xen/arch/x86/acpi/Makefile
@@ -1,4 +1,4 @@
 subdir-y += cpufreq
 
-obj-y += boot.o power.o suspend.o cpu_idle.o cpuidle_menu.o
-obj-bin-y += wakeup_prot.o
+obj-y += lib.o power.o suspend.o cpu_idle.o cpuidle_menu.o
+obj-bin-y += boot.init.o wakeup_prot.o
--- a/xen/arch/x86/acpi/boot.c
+++ b/xen/arch/x86/acpi/boot.c
@@ -69,58 +69,10 @@ bool_t acpi_skip_timer_override __initda
 static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
 #endif
 
-u32 __read_mostly acpi_smi_cmd;
-u8 __read_mostly acpi_enable_value;
-u8 __read_mostly acpi_disable_value;
-
-u32 __read_mostly x86_acpiid_to_apicid[MAX_MADT_ENTRIES] =
-    {[0 ... MAX_MADT_ENTRIES - 1] = BAD_APICID };
-
 /* --------------------------------------------------------------------------
                               Boot-time Configuration
    -------------------------------------------------------------------------- */
 
-/*
- * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END,
- * to map the target physical address. The problem is that set_fixmap()
- * provides a single page, and it is possible that the page is not
- * sufficient.
- * By using this area, we can map up to MAX_IO_APICS pages temporarily,
- * i.e. until the next __va_range() call.
- *
- * Important Safety Note:  The fixed I/O APIC page numbers are *subtracted*
- * from the fixed base.  That's why we start at FIX_IO_APIC_BASE_END and
- * count idx down while incrementing the phys address.
- */
-char *__acpi_map_table(unsigned long phys, unsigned long size)
-{
-	unsigned long base, offset, mapped_size;
-	int idx;
-
-	/* XEN: RAM holes above 1MB are not permanently mapped. */
-	if ((phys + size) <= (1 * 1024 * 1024))
-		return __va(phys);
-
-	offset = phys & (PAGE_SIZE - 1);
-	mapped_size = PAGE_SIZE - offset;
-	set_fixmap(FIX_ACPI_END, phys);
-	base = fix_to_virt(FIX_ACPI_END);
-
-	/*
-	 * Most cases can be covered by the below.
-	 */
-	idx = FIX_ACPI_END;
-	while (mapped_size < size) {
-		if (--idx < FIX_ACPI_BEGIN)
-			return NULL;	/* cannot handle this */
-		phys += PAGE_SIZE;
-		set_fixmap(idx, phys);
-		mapped_size += PAGE_SIZE;
-	}
-
-	return ((char *) base + offset);
-}
-
 #ifdef CONFIG_X86_LOCAL_APIC
 static int __init acpi_parse_madt(struct acpi_table_header *table)
 {
@@ -927,17 +879,3 @@ int __init acpi_boot_init(void)
 
 	return 0;
 }
-
-unsigned int acpi_get_processor_id(unsigned int cpu)
-{
-	unsigned int acpiid, apicid;
-
-	if ((apicid = x86_cpu_to_apicid[cpu]) == BAD_APICID)
-		return INVALID_ACPIID;
-
-	for (acpiid = 0; acpiid < ARRAY_SIZE(x86_acpiid_to_apicid); acpiid++)
-		if (x86_acpiid_to_apicid[acpiid] == apicid)
-			return acpiid;
-
-	return INVALID_ACPIID;
-}
--- /dev/null
+++ b/xen/arch/x86/acpi/lib.c
@@ -0,0 +1,83 @@
+/*
+ *  lib.c - Architecture-Specific Low-Level ACPI Support
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <xen/config.h>
+#include <xen/errno.h>
+#include <xen/init.h>
+#include <xen/acpi.h>
+#include <asm/apic.h>
+#include <asm/fixmap.h>
+
+u32 __read_mostly acpi_smi_cmd;
+u8 __read_mostly acpi_enable_value;
+u8 __read_mostly acpi_disable_value;
+
+u32 __read_mostly x86_acpiid_to_apicid[MAX_MADT_ENTRIES] =
+    {[0 ... MAX_MADT_ENTRIES - 1] = BAD_APICID };
+
+/*
+ * Important Safety Note:  The fixed ACPI page numbers are *subtracted*
+ * from the fixed base.  That's why we start at FIX_ACPI_END and
+ * count idx down while incrementing the phys address.
+ */
+char *__acpi_map_table(unsigned long phys, unsigned long size)
+{
+	unsigned long base, offset, mapped_size;
+	int idx;
+
+	/* XEN: RAM holes above 1MB are not permanently mapped. */
+	if ((phys + size) <= (1 * 1024 * 1024))
+		return __va(phys);
+
+	offset = phys & (PAGE_SIZE - 1);
+	mapped_size = PAGE_SIZE - offset;
+	set_fixmap(FIX_ACPI_END, phys);
+	base = fix_to_virt(FIX_ACPI_END);
+
+	/*
+	 * Most cases can be covered by the below.
+	 */
+	idx = FIX_ACPI_END;
+	while (mapped_size < size) {
+		if (--idx < FIX_ACPI_BEGIN)
+			return NULL;	/* cannot handle this */
+		phys += PAGE_SIZE;
+		set_fixmap(idx, phys);
+		mapped_size += PAGE_SIZE;
+	}
+
+	return ((char *) base + offset);
+}
+
+unsigned int acpi_get_processor_id(unsigned int cpu)
+{
+	unsigned int acpiid, apicid;
+
+	if ((apicid = x86_cpu_to_apicid[cpu]) == BAD_APICID)
+		return INVALID_ACPIID;
+
+	for (acpiid = 0; acpiid < ARRAY_SIZE(x86_acpiid_to_apicid); acpiid++)
+		if (x86_acpiid_to_apicid[acpiid] == apicid)
+			return acpiid;
+
+	return INVALID_ACPIID;
+}
--- a/xen/drivers/acpi/tables/Makefile
+++ b/xen/drivers/acpi/tables/Makefile
@@ -1,5 +1,5 @@
-obj-y += tbfadt.o
-obj-y += tbinstal.o
+obj-bin-y += tbfadt.init.o
+obj-bin-y += tbinstal.init.o
 obj-y += tbutils.o
-obj-y += tbxface.o
-obj-y += tbxfroot.o
+obj-bin-y += tbxface.init.o
+obj-bin-y += tbxfroot.init.o
--- a/xen/drivers/acpi/tables/tbxface.c
+++ b/xen/drivers/acpi/tables/tbxface.c
@@ -67,7 +67,8 @@ ACPI_MODULE_NAME("tbxface")
 acpi_status __init acpi_allocate_root_table(u32 initial_table_count)
 {
 
-	acpi_gbl_root_table_list.size = initial_table_count;
+	acpi_gbl_root_table_list.size = initial_table_count -
+					ACPI_ROOT_TABLE_SIZE_INCREMENT;
 	acpi_gbl_root_table_list.flags = ACPI_ROOT_ALLOW_RESIZE;
 
 	return (acpi_tb_resize_root_table_list());
--- a/xen/drivers/acpi/utilities/Makefile
+++ b/xen/drivers/acpi/utilities/Makefile
@@ -1,2 +1,2 @@
 obj-y += utglobal.o
-obj-y += utmisc.o
+obj-bin-y += utmisc.init.o
--- a/xen/drivers/acpi/utilities/utmisc.c
+++ b/xen/drivers/acpi/utilities/utmisc.c
@@ -135,7 +135,7 @@ const char *__init acpi_ut_validate_exce
  ******************************************************************************/
 
 void ACPI_INTERNAL_VAR_XFACE __init
-acpi_ut_error(char *module_name, u32 line_number, char *format, ...)
+acpi_ut_error(const char *module_name, u32 line_number, char *format, ...)
 {
 	va_list args;
 
@@ -148,7 +148,7 @@ acpi_ut_error(char *module_name, u32 lin
 }
 
 void ACPI_INTERNAL_VAR_XFACE __init
-acpi_ut_warning(char *module_name, u32 line_number, char *format, ...)
+acpi_ut_warning(const char *module_name, u32 line_number, char *format, ...)
 {
 	va_list args;
 
@@ -162,7 +162,7 @@ acpi_ut_warning(char *module_name, u32 l
 }
 
 void ACPI_INTERNAL_VAR_XFACE __init
-acpi_ut_info(char *module_name, u32 line_number, char *format, ...)
+acpi_ut_info(const char *module_name, u32 line_number, char *format, ...)
 {
 	va_list args;
 
--- a/xen/include/acpi/acmacros.h
+++ b/xen/include/acpi/acmacros.h
@@ -413,7 +413,7 @@
  * error messages. The __FILE__ macro is not very useful for this, because it
  * often includes the entire pathname to the module
  */
-#define ACPI_MODULE_NAME(name)          static char ACPI_UNUSED_VAR *_acpi_module_name = name;
+#define ACPI_MODULE_NAME(name)          static const char ACPI_UNUSED_VAR _acpi_module_name[] = name;
 #else
 #define ACPI_MODULE_NAME(name)
 #endif
--- a/xen/include/acpi/acutils.h
+++ b/xen/include/acpi/acutils.h
@@ -121,41 +121,41 @@ void acpi_ut_track_stack_ptr(void);
 
 void
 acpi_ut_trace(u32 line_number,
-	      const char *function_name, char *module_name, u32 component_id);
+	      const char *function_name, const char *module_name, u32 component_id);
 
 void
 acpi_ut_trace_ptr(u32 line_number,
 		  const char *function_name,
-		  char *module_name, u32 component_id, void *pointer);
+		  const char *module_name, u32 component_id, void *pointer);
 
 void
 acpi_ut_trace_u32(u32 line_number,
 		  const char *function_name,
-		  char *module_name, u32 component_id, u32 integer);
+		  const char *module_name, u32 component_id, u32 integer);
 
 void
 acpi_ut_trace_str(u32 line_number,
 		  const char *function_name,
-		  char *module_name, u32 component_id, char *string);
+		  const char *module_name, u32 component_id, char *string);
 
 void
 acpi_ut_exit(u32 line_number,
-	     const char *function_name, char *module_name, u32 component_id);
+	     const char *function_name, const char *module_name, u32 component_id);
 
 void
 acpi_ut_status_exit(u32 line_number,
 		    const char *function_name,
-		    char *module_name, u32 component_id, acpi_status status);
+		    const char *module_name, u32 component_id, acpi_status status);
 
 void
 acpi_ut_value_exit(u32 line_number,
 		   const char *function_name,
-		   char *module_name, u32 component_id, acpi_integer value);
+		   const char *module_name, u32 component_id, acpi_integer value);
 
 void
 acpi_ut_ptr_exit(u32 line_number,
 		 const char *function_name,
-		 char *module_name, u32 component_id, u8 * ptr);
+		 const char *module_name, u32 component_id, u8 * ptr);
 
 /* Error and message reporting interfaces */
 
@@ -163,32 +163,32 @@ void ACPI_INTERNAL_VAR_XFACE
 acpi_ut_debug_print(u32 requested_debug_level,
 		    u32 line_number,
 		    const char *function_name,
-		    char *module_name,
+		    const char *module_name,
 		    u32 component_id, char *format, ...) ACPI_PRINTF_LIKE(6);
 
 void ACPI_INTERNAL_VAR_XFACE
 acpi_ut_debug_print_raw(u32 requested_debug_level,
 			u32 line_number,
 			const char *function_name,
-			char *module_name,
+			const char *module_name,
 			u32 component_id,
 			char *format, ...) ACPI_PRINTF_LIKE(6);
 
 void ACPI_INTERNAL_VAR_XFACE
-acpi_ut_error(char *module_name,
+acpi_ut_error(const char *module_name,
 	      u32 line_number, char *format, ...) ACPI_PRINTF_LIKE(3);
 
 void ACPI_INTERNAL_VAR_XFACE
-acpi_ut_exception(char *module_name,
+acpi_ut_exception(const char *module_name,
 		  u32 line_number,
 		  acpi_status status, char *format, ...) ACPI_PRINTF_LIKE(4);
 
 void ACPI_INTERNAL_VAR_XFACE
-acpi_ut_warning(char *module_name,
+acpi_ut_warning(const char *module_name,
 		u32 line_number, char *format, ...) ACPI_PRINTF_LIKE(3);
 
 void ACPI_INTERNAL_VAR_XFACE
-acpi_ut_info(char *module_name,
+acpi_ut_info(const char *module_name,
 	     u32 line_number, char *format, ...) ACPI_PRINTF_LIKE(3);
 
 /*

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