[PATCH 7/21] [PATCH] unify common parts of processor.h

From: Glauber de Oliveira Costa
Date: Mon Dec 17 2007 - 20:39:31 EST

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This patch moves the pieces of processor_32.h and processor_64 that are
equal to processor.h. Only what's exactly the same is moved around, the rest
not being touched.

Signed-off-by: Glauber de Oliveira Costa <gcosta@xxxxxxxxxx>
---
include/asm-x86/processor.h | 116 ++++++++++++++++++++++++++++++++++++++++
include/asm-x86/processor_32.h | 111 --------------------------------------
include/asm-x86/processor_64.h | 116 ----------------------------------------
3 files changed, 116 insertions(+), 227 deletions(-)

Index: linux-2.6-x86/include/asm-x86/processor.h
===================================================================
--- linux-2.6-x86.orig/include/asm-x86/processor.h
+++ linux-2.6-x86/include/asm-x86/processor.h
@@ -29,6 +29,11 @@ static inline void load_cr3(pgd_t *pgdir
# include "processor_64.h"
#endif

+extern void print_cpu_info(struct cpuinfo_x86 *);
+extern void init_scattered_cpuid_features(struct cpuinfo_x86 *c);
+extern unsigned int init_intel_cacheinfo(struct cpuinfo_x86 *c);
+extern unsigned short num_cache_leaves;
+
static inline unsigned long native_get_debugreg(int regno)
{
unsigned long val = 0; /* Damn you, gcc! */
@@ -138,7 +143,53 @@ static inline void clear_in_cr4(unsigned
write_cr4(cr4);
}

+struct microcode_header {
+ unsigned int hdrver;
+ unsigned int rev;
+ unsigned int date;
+ unsigned int sig;
+ unsigned int cksum;
+ unsigned int ldrver;
+ unsigned int pf;
+ unsigned int datasize;
+ unsigned int totalsize;
+ unsigned int reserved[3];
+};
+
+struct microcode {
+ struct microcode_header hdr;
+ unsigned int bits[0];
+};
+
+typedef struct microcode microcode_t;
+typedef struct microcode_header microcode_header_t;
+
+/* microcode format is extended from prescott processors */
+struct extended_signature {
+ unsigned int sig;
+ unsigned int pf;
+ unsigned int cksum;
+};
+
+struct extended_sigtable {
+ unsigned int count;
+ unsigned int cksum;
+ unsigned int reserved[3];
+ struct extended_signature sigs[0];
+};
+
+/*
+ * create a kernel thread without removing it from tasklists
+ */
+extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
+
+/* Free all resources held by a thread. */
+extern void release_thread(struct task_struct *);
+
+/* Prepare to copy thread state - unlazy all lazy status */
+extern void prepare_to_copy(struct task_struct *tsk);

+unsigned long get_wchan(struct task_struct *p);

/*
* Generic CPUID function
@@ -196,4 +247,69 @@ static inline unsigned int cpuid_edx(uns
return edx;
}

+/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
+static inline void rep_nop(void)
+{
+ __asm__ __volatile__("rep;nop": : :"memory");
+}
+
+/* Stop speculative execution */
+static inline void sync_core(void)
+{
+ int tmp;
+ asm volatile("cpuid" : "=a" (tmp) : "0" (1)
+ : "ebx", "ecx", "edx", "memory");
+}
+
+#define cpu_relax() rep_nop()
+
+static inline void __monitor(const void *eax, unsigned long ecx,
+ unsigned long edx)
+{
+ /* "monitor %eax,%ecx,%edx;" */
+ asm volatile(
+ ".byte 0x0f,0x01,0xc8;"
+ : :"a" (eax), "c" (ecx), "d"(edx));
+}
+
+static inline void __mwait(unsigned long eax, unsigned long ecx)
+{
+ /* "mwait %eax,%ecx;" */
+ asm volatile(
+ ".byte 0x0f,0x01,0xc9;"
+ : :"a" (eax), "c" (ecx));
+}
+
+static inline void __sti_mwait(unsigned long eax, unsigned long ecx)
+{
+ /* "mwait %eax,%ecx;" */
+ asm volatile(
+ "sti; .byte 0x0f,0x01,0xc9;"
+ : :"a" (eax), "c" (ecx));
+}
+
+extern void mwait_idle_with_hints(unsigned long eax, unsigned long ecx);
+
+extern int force_mwait;
+
+extern void select_idle_routine(const struct cpuinfo_x86 *c);
+
+extern unsigned long boot_option_idle_override;
+
+/* Boot loader type from the setup header */
+extern int bootloader_type;
+#define cache_line_size() (boot_cpu_data.x86_cache_alignment)
+
+#define HAVE_ARCH_PICK_MMAP_LAYOUT 1
+#define ARCH_HAS_PREFETCHW
+#define ARCH_HAS_SPINLOCK_PREFETCH
+
+#define spin_lock_prefetch(x) prefetchw(x)
+/* This decides where the kernel will search for a free chunk of vm
+ * space during mmap's.
+ */
+#define TASK_UNMAPPED_BASE (PAGE_ALIGN(TASK_SIZE / 3))
+
+#define KSTK_EIP(task) (task_pt_regs(task)->ip)
+
#endif
Index: linux-2.6-x86/include/asm-x86/processor_32.h
===================================================================
--- linux-2.6-x86.orig/include/asm-x86/processor_32.h
+++ linux-2.6-x86/include/asm-x86/processor_32.h
@@ -109,10 +109,6 @@ void __init cpu_detect(struct cpuinfo_x8

extern void identify_boot_cpu(void);
extern void identify_secondary_cpu(struct cpuinfo_x86 *);
-extern void print_cpu_info(struct cpuinfo_x86 *);
-extern void init_scattered_cpuid_features(struct cpuinfo_x86 *c);
-extern unsigned int init_intel_cacheinfo(struct cpuinfo_x86 *c);
-extern unsigned short num_cache_leaves;

#ifdef CONFIG_X86_HT
extern void detect_ht(struct cpuinfo_x86 *c);
@@ -120,32 +116,6 @@ extern void detect_ht(struct cpuinfo_x86
static inline void detect_ht(struct cpuinfo_x86 *c) {}
#endif

-/* Stop speculative execution */
-static inline void sync_core(void)
-{
- int tmp;
- asm volatile("cpuid" : "=a" (tmp) : "0" (1) : "ebx","ecx","edx","memory");
-}
-
-static inline void __monitor(const void *eax, unsigned long ecx,
- unsigned long edx)
-{
- /* "monitor %eax,%ecx,%edx;" */
- asm volatile(
- ".byte 0x0f,0x01,0xc8;"
- : :"a" (eax), "c" (ecx), "d"(edx));
-}
-
-static inline void __mwait(unsigned long eax, unsigned long ecx)
-{
- /* "mwait %eax,%ecx;" */
- asm volatile(
- ".byte 0x0f,0x01,0xc9;"
- : :"a" (eax), "c" (ecx));
-}
-
-extern void mwait_idle_with_hints(unsigned long eax, unsigned long ecx);
-
/* from system description table in BIOS. Mostly for MCA use, but
others may find it useful. */
extern unsigned int machine_id;
@@ -153,20 +123,11 @@ extern unsigned int machine_submodel_id;
extern unsigned int BIOS_revision;
extern unsigned int mca_pentium_flag;

-/* Boot loader type from the setup header */
-extern int bootloader_type;
-
/*
* User space process size: 3GB (default).
*/
#define TASK_SIZE (PAGE_OFFSET)

-/* This decides where the kernel will search for a free chunk of vm
- * space during mmap's.
- */
-#define TASK_UNMAPPED_BASE (PAGE_ALIGN(TASK_SIZE / 3))
-
-#define HAVE_ARCH_PICK_MMAP_LAYOUT

/*
* Size of io_bitmap.
@@ -356,25 +317,9 @@ struct thread_struct {
regs->sp = new_esp; \
} while (0)

-/* Forward declaration, a strange C thing */
-struct task_struct;
-struct mm_struct;
-
-/* Free all resources held by a thread. */
-extern void release_thread(struct task_struct *);
-
-/* Prepare to copy thread state - unlazy all lazy status */
-extern void prepare_to_copy(struct task_struct *tsk);
-
-/*
- * create a kernel thread without removing it from tasklists
- */
-extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);

extern unsigned long thread_saved_pc(struct task_struct *tsk);

-unsigned long get_wchan(struct task_struct *p);
-
#define THREAD_SIZE_LONGS (THREAD_SIZE/sizeof(unsigned long))
#define KSTK_TOP(info) \
({ \
@@ -399,53 +344,8 @@ unsigned long get_wchan(struct task_stru
__regs__ - 1; \
})

-#define KSTK_EIP(task) (task_pt_regs(task)->ip)
#define KSTK_ESP(task) (task_pt_regs(task)->sp)

-
-struct microcode_header {
- unsigned int hdrver;
- unsigned int rev;
- unsigned int date;
- unsigned int sig;
- unsigned int cksum;
- unsigned int ldrver;
- unsigned int pf;
- unsigned int datasize;
- unsigned int totalsize;
- unsigned int reserved[3];
-};
-
-struct microcode {
- struct microcode_header hdr;
- unsigned int bits[0];
-};
-
-typedef struct microcode microcode_t;
-typedef struct microcode_header microcode_header_t;
-
-/* microcode format is extended from prescott processors */
-struct extended_signature {
- unsigned int sig;
- unsigned int pf;
- unsigned int cksum;
-};
-
-struct extended_sigtable {
- unsigned int count;
- unsigned int cksum;
- unsigned int reserved[3];
- struct extended_signature sigs[0];
-};
-
-/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
-static inline void rep_nop(void)
-{
- __asm__ __volatile__("rep;nop": : :"memory");
-}
-
-#define cpu_relax() rep_nop()
-
static inline void native_load_sp0(struct tss_struct *tss, struct thread_struct *thread)
{
tss->x86_tss.sp0 = thread->sp0;
@@ -555,7 +455,6 @@ static inline void load_sp0(struct tss_s
because they are microcoded there and very slow.
However we don't do prefetches for pre XP Athlons currently
That should be fixed. */
-#define ARCH_HAS_PREFETCH
static inline void prefetch(const void *x)
{
alternative_input(ASM_NOP4,
@@ -565,8 +464,6 @@ static inline void prefetch(const void *
}

#define ARCH_HAS_PREFETCH
-#define ARCH_HAS_PREFETCHW
-#define ARCH_HAS_SPINLOCK_PREFETCH

/* 3dnow! prefetch to get an exclusive cache line. Useful for
spinlocks to avoid one state transition in the cache coherency protocol. */
@@ -577,13 +474,7 @@ static inline void prefetchw(const void
X86_FEATURE_3DNOW,
"r" (x));
}
-#define spin_lock_prefetch(x) prefetchw(x)
-
-extern void select_idle_routine(const struct cpuinfo_x86 *c);

-#define cache_line_size() (boot_cpu_data.x86_cache_alignment)
-
-extern unsigned long boot_option_idle_override;
extern void enable_sep_cpu(void);
extern int sysenter_setup(void);

@@ -595,6 +486,4 @@ extern void switch_to_new_gdt(void);
extern void cpu_init(void);
extern void init_gdt(int cpu);

-extern int force_mwait;
-
#endif /* __ASM_I386_PROCESSOR_H */
Index: linux-2.6-x86/include/asm-x86/processor_64.h
===================================================================
--- linux-2.6-x86.orig/include/asm-x86/processor_64.h
+++ linux-2.6-x86/include/asm-x86/processor_64.h
@@ -83,11 +83,6 @@ DECLARE_PER_CPU(struct cpuinfo_x86, cpu_
extern char ignore_irq13;

extern void identify_cpu(struct cpuinfo_x86 *);
-extern void print_cpu_info(struct cpuinfo_x86 *);
-extern void init_scattered_cpuid_features(struct cpuinfo_x86 *c);
-extern unsigned int init_intel_cacheinfo(struct cpuinfo_x86 *c);
-extern unsigned short num_cache_leaves;
-

/*
* User space process size. 47bits minus one guard page.
@@ -102,8 +97,6 @@ extern unsigned short num_cache_leaves;
#define TASK_SIZE (test_thread_flag(TIF_IA32) ? IA32_PAGE_OFFSET : TASK_SIZE64)
#define TASK_SIZE_OF(child) ((test_tsk_thread_flag(child, TIF_IA32)) ? IA32_PAGE_OFFSET : TASK_SIZE64)

-#define TASK_UNMAPPED_BASE PAGE_ALIGN(TASK_SIZE/3)
-
/*
* Size of io_bitmap.
*/
@@ -226,68 +219,16 @@ struct thread_struct {
set_fs(USER_DS); \
} while(0)

-struct task_struct;
-struct mm_struct;
-
-/* Free all resources held by a thread. */
-extern void release_thread(struct task_struct *);
-
-/* Prepare to copy thread state - unlazy all lazy status */
-extern void prepare_to_copy(struct task_struct *tsk);
-
-/*
- * create a kernel thread without removing it from tasklists
- */
-extern long kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
-
/*
* Return saved PC of a blocked thread.
* What is this good for? it will be always the scheduler or ret_from_fork.
*/
#define thread_saved_pc(t) (*(unsigned long *)((t)->thread.sp - 8))

-extern unsigned long get_wchan(struct task_struct *p);
#define task_pt_regs(tsk) ((struct pt_regs *)(tsk)->thread.sp0 - 1)
-#define KSTK_EIP(tsk) (task_pt_regs(tsk)->ip)
#define KSTK_ESP(tsk) -1 /* sorry. doesn't work for syscall. */

-struct microcode_header {
- unsigned int hdrver;
- unsigned int rev;
- unsigned int date;
- unsigned int sig;
- unsigned int cksum;
- unsigned int ldrver;
- unsigned int pf;
- unsigned int datasize;
- unsigned int totalsize;
- unsigned int reserved[3];
-};
-
-struct microcode {
- struct microcode_header hdr;
- unsigned int bits[0];
-};
-
-typedef struct microcode microcode_t;
-typedef struct microcode_header microcode_header_t;
-
-/* microcode format is extended from prescott processors */
-struct extended_signature {
- unsigned int sig;
- unsigned int pf;
- unsigned int cksum;
-};
-
-struct extended_sigtable {
- unsigned int count;
- unsigned int cksum;
- unsigned int reserved[3];
- struct extended_signature sigs[0];
-};
-
-
#if defined(CONFIG_MPSC) || defined(CONFIG_MCORE2)
#define ASM_NOP1 P6_NOP1
#define ASM_NOP2 P6_NOP2
@@ -331,20 +272,6 @@ struct extended_sigtable {

#define ASM_NOP_MAX 8

-/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
-static inline void rep_nop(void)
-{
- __asm__ __volatile__("rep;nop": : :"memory");
-}
-
-/* Stop speculative execution */
-static inline void sync_core(void)
-{
- int tmp;
- asm volatile("cpuid" : "=a" (tmp) : "0" (1) : "ebx","ecx","edx","memory");
-}
-
-#define ARCH_HAS_PREFETCHW 1
static inline void prefetchw(void *x)
{
alternative_input("prefetcht0 (%1)",
@@ -353,42 +280,6 @@ static inline void prefetchw(void *x)
"r" (x));
}

-#define ARCH_HAS_SPINLOCK_PREFETCH 1
-
-#define spin_lock_prefetch(x) prefetchw(x)
-
-#define cpu_relax() rep_nop()
-
-static inline void __monitor(const void *eax, unsigned long ecx,
- unsigned long edx)
-{
- /* "monitor %eax,%ecx,%edx;" */
- asm volatile(
- ".byte 0x0f,0x01,0xc8;"
- : :"a" (eax), "c" (ecx), "d"(edx));
-}
-
-static inline void __mwait(unsigned long eax, unsigned long ecx)
-{
- /* "mwait %eax,%ecx;" */
- asm volatile(
- ".byte 0x0f,0x01,0xc9;"
- : :"a" (eax), "c" (ecx));
-}
-
-static inline void __sti_mwait(unsigned long eax, unsigned long ecx)
-{
- /* "mwait %eax,%ecx;" */
- asm volatile(
- "sti; .byte 0x0f,0x01,0xc9;"
- : :"a" (eax), "c" (ecx));
-}
-
-extern void mwait_idle_with_hints(unsigned long eax, unsigned long ecx);
-
-extern int force_mwait;
-
-extern void select_idle_routine(const struct cpuinfo_x86 *c);

#define stack_current() \
({ \
@@ -397,12 +288,5 @@ extern void select_idle_routine(const st
ti->task; \
})

-#define cache_line_size() (boot_cpu_data.x86_cache_alignment)
-
-extern unsigned long boot_option_idle_override;
-/* Boot loader type from the setup header */
-extern int bootloader_type;
-
-#define HAVE_ARCH_PICK_MMAP_LAYOUT 1

#endif /* __ASM_X86_64_PROCESSOR_H */
--
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