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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] The patch attached removes pda.h and asm_offset.c by deleting unused or
# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID 60a8a5ca4291c75f64090311812ffb9fde7daea7
# Parent d6e64adbff0406b2bec4b7bb9ba950e5e668717e
The patch attached removes pda.h and asm_offset.c by deleting unused or
unnecessary variables (that were used for old codes).
Signed-off-by: Jun Nakajima <jun.nakajima@xxxxxxxxx>
diff -r d6e64adbff04 -r 60a8a5ca4291
linux-2.6-xen-sparse/arch/xen/x86_64/Makefile
--- a/linux-2.6-xen-sparse/arch/xen/x86_64/Makefile Mon Aug 15 07:45:42 2005
+++ b/linux-2.6-xen-sparse/arch/xen/x86_64/Makefile Mon Aug 15 07:51:58 2005
@@ -79,14 +79,15 @@
CFLAGS += $(xenflags-y)
AFLAGS += $(xenflags-y)
-prepare: include/asm-$(XENARCH)/asm_offset.h
-CLEAN_FILES += include/asm-$(XENARCH)/asm_offset.h
+prepare: include/asm-$(XENARCH)/asm_offsets.h
+CLEAN_FILES += include/asm-$(XENARCH)/asm_offsets.h
arch/$(XENARCH)/kernel/asm-offsets.s: include/asm include/.asm-ignore \
include/linux/version.h include/config/MARKER
+include/asm-$(XENARCH)/offset.h: arch/$(XENARCH)/kernel/asm-offsets.s
+ $(call filechk,gen-asm-offsets)
-include/asm-$(XENARCH)/asm_offset.h: arch/xen/x86_64/kernel/asm-offsets.s
- $(call filechk,gen-asm-offsets)
- ln -fsn asm_offset.h include/asm-$(XENARCH)/offset.h
-
+include/asm-$(XENARCH)/asm_offsets.h: include/asm-$(XENARCH)/offset.h
+ ln -fsn offset.h include/asm-$(XENARCH)/asm_offsets.h
+ ln -fsn offset.h include/asm-$(XENARCH)/asm_offset.h
diff -r d6e64adbff04 -r 60a8a5ca4291
linux-2.6-xen-sparse/arch/xen/x86_64/kernel/entry.S
--- a/linux-2.6-xen-sparse/arch/xen/x86_64/kernel/entry.S Mon Aug 15
07:45:42 2005
+++ b/linux-2.6-xen-sparse/arch/xen/x86_64/kernel/entry.S Mon Aug 15
07:51:58 2005
@@ -128,7 +128,6 @@
* #define VGCF_IN_SYSCALL (1<<8)
*/
.macro SWITCH_TO_USER flag
- movl $0,%gs:pda_kernel_mode # change to user mode
subq $8*4,%rsp # reuse rip, cs, rflags, rsp, ss in
the stack
movq %rax,(%rsp)
movq %r11,1*8(%rsp)
@@ -139,7 +138,6 @@
.endm
.macro SWITCH_TO_KERNEL ssoff,adjust=0
- btsq $0,%gs:pda_kernel_mode
jc 1f
orb $1,\ssoff-\adjust+4(%rsp)
1:
diff -r d6e64adbff04 -r 60a8a5ca4291
linux-2.6-xen-sparse/arch/xen/x86_64/kernel/process.c
--- a/linux-2.6-xen-sparse/arch/xen/x86_64/kernel/process.c Mon Aug 15
07:45:42 2005
+++ b/linux-2.6-xen-sparse/arch/xen/x86_64/kernel/process.c Mon Aug 15
07:51:58 2005
@@ -148,7 +148,6 @@
if (cpu_is_offline(cpu))
play_dead();
- __IRQ_STAT(cpu,idle_timestamp) = jiffies;
xen_idle();
}
diff -r d6e64adbff04 -r 60a8a5ca4291
linux-2.6-xen-sparse/arch/xen/x86_64/kernel/asm-offsets.c
--- a/linux-2.6-xen-sparse/arch/xen/x86_64/kernel/asm-offsets.c Mon Aug 15
07:45:42 2005
+++ /dev/null Mon Aug 15 07:51:58 2005
@@ -1,70 +0,0 @@
-/*
- * Generate definitions needed by assembly language modules.
- * This code generates raw asm output which is post-processed to extract
- * and format the required data.
- */
-
-#include <linux/sched.h>
-#include <linux/stddef.h>
-#include <linux/errno.h>
-#include <linux/hardirq.h>
-#include <linux/suspend.h>
-#include <asm/pda.h>
-#include <asm/processor.h>
-#include <asm/segment.h>
-#include <asm/thread_info.h>
-#include <asm/ia32.h>
-
-#define DEFINE(sym, val) \
- asm volatile("\n->" #sym " %0 " #val : : "i" (val))
-
-#define BLANK() asm volatile("\n->" : : )
-
-int main(void)
-{
-#define ENTRY(entry) DEFINE(tsk_ ## entry, offsetof(struct task_struct, entry))
- ENTRY(state);
- ENTRY(flags);
- ENTRY(thread);
- ENTRY(pid);
- BLANK();
-#undef ENTRY
-#define ENTRY(entry) DEFINE(threadinfo_ ## entry, offsetof(struct thread_info,
entry))
- ENTRY(flags);
- ENTRY(addr_limit);
- ENTRY(preempt_count);
- BLANK();
-#undef ENTRY
-#define ENTRY(entry) DEFINE(pda_ ## entry, offsetof(struct x8664_pda, entry))
- ENTRY(kernelstack);
- ENTRY(oldrsp);
- ENTRY(pcurrent);
- ENTRY(irqrsp);
- ENTRY(irqcount);
- ENTRY(cpunumber);
- ENTRY(irqstackptr);
- ENTRY(kernel_mode);
- BLANK();
-#undef ENTRY
-#ifdef CONFIG_IA32_EMULATION
-#define ENTRY(entry) DEFINE(IA32_SIGCONTEXT_ ## entry, offsetof(struct
sigcontext_ia32, entry))
- ENTRY(eax);
- ENTRY(ebx);
- ENTRY(ecx);
- ENTRY(edx);
- ENTRY(esi);
- ENTRY(edi);
- ENTRY(ebp);
- ENTRY(esp);
- ENTRY(eip);
- BLANK();
-#undef ENTRY
- DEFINE(IA32_RT_SIGFRAME_sigcontext,
- offsetof (struct rt_sigframe32, uc.uc_mcontext));
- BLANK();
-#endif
- DEFINE(pbe_address, offsetof(struct pbe, address));
- DEFINE(pbe_orig_address, offsetof(struct pbe, orig_address));
- DEFINE(pbe_next, offsetof(struct pbe, next));
- return 0;
-}
diff -r d6e64adbff04 -r 60a8a5ca4291
linux-2.6-xen-sparse/include/asm-xen/asm-x86_64/pda.h
--- a/linux-2.6-xen-sparse/include/asm-xen/asm-x86_64/pda.h Mon Aug 15
07:45:42 2005
+++ /dev/null Mon Aug 15 07:51:58 2005
@@ -1,85 +0,0 @@
-#ifndef X86_64_PDA_H
-#define X86_64_PDA_H
-
-#ifndef __ASSEMBLY__
-#include <linux/stddef.h>
-#include <linux/types.h>
-#include <linux/cache.h>
-
-/* Per processor datastructure. %gs points to it while the kernel runs */
-struct x8664_pda {
- struct task_struct *pcurrent; /* Current process */
- unsigned long data_offset; /* Per cpu data offset from linker
address */
- struct x8664_pda *me; /* Pointer to itself */
- unsigned long kernelstack; /* top of kernel stack for current */
- unsigned long oldrsp; /* user rsp for system call */
- unsigned long irqrsp; /* Old rsp for interrupts. */
- int irqcount; /* Irq nesting counter. Starts with -1 */
- int cpunumber; /* Logical CPU number */
- char *irqstackptr; /* top of irqstack */
- unsigned int __softirq_pending;
- unsigned int __nmi_count; /* number of NMI on this CPUs */
- unsigned long idle_timestamp;
- struct mm_struct *active_mm;
- int mmu_state;
- unsigned apic_timer_irqs;
- int kernel_mode; /* kernel or user mode */
-} ____cacheline_aligned;
-
-
-#define IRQSTACK_ORDER 2
-#define IRQSTACKSIZE (PAGE_SIZE << IRQSTACK_ORDER)
-
-extern struct x8664_pda cpu_pda[];
-
-/*
- * There is no fast way to get the base address of the PDA, all the accesses
- * have to mention %fs/%gs. So it needs to be done this Torvaldian way.
- */
-#define sizeof_field(type,field) (sizeof(((type *)0)->field))
-#define typeof_field(type,field) typeof(((type *)0)->field)
-
-extern void __bad_pda_field(void);
-
-#define pda_offset(field) offsetof(struct x8664_pda, field)
-
-#define pda_to_op(op,field,val) do { \
- switch (sizeof_field(struct x8664_pda, field)) { \
-case 2: \
-asm volatile(op "w %0,%%gs:%P1"::"r" (val),"i"(pda_offset(field)):"memory");
break; \
-case 4: \
-asm volatile(op "l %0,%%gs:%P1"::"r" (val),"i"(pda_offset(field)):"memory");
break; \
-case 8: \
-asm volatile(op "q %0,%%gs:%P1"::"r" (val),"i"(pda_offset(field)):"memory");
break; \
- default: __bad_pda_field(); \
- } \
- } while (0)
-
-/*
- * AK: PDA read accesses should be neither volatile nor have an memory clobber.
- * Unfortunately removing them causes all hell to break lose currently.
- */
-#define pda_from_op(op,field) ({ \
- typedef typeof_field(struct x8664_pda, field) T__; T__ ret__; \
- switch (sizeof_field(struct x8664_pda, field)) { \
-case 2: \
-asm volatile(op "w %%gs:%P1,%0":"=r" (ret__):"i"(pda_offset(field)):"memory");
break;\
-case 4: \
-asm volatile(op "l %%gs:%P1,%0":"=r" (ret__):"i"(pda_offset(field)):"memory");
break;\
-case 8: \
-asm volatile(op "q %%gs:%P1,%0":"=r" (ret__):"i"(pda_offset(field)):"memory");
break;\
- default: __bad_pda_field(); \
- } \
- ret__; })
-
-
-#define read_pda(field) pda_from_op("mov",field)
-#define write_pda(field,val) pda_to_op("mov",field,val)
-#define add_pda(field,val) pda_to_op("add",field,val)
-#define sub_pda(field,val) pda_to_op("sub",field,val)
-
-#endif
-
-#define PDA_STACKOFFSET (5*8)
-
-#endif
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