|
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH] [Mini-OS] make stack size configurable
make stack size configurable
Signed-off-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxxx>
Signed-off-by: Grzegorz Milos <gm281@xxxxxxxxx>
# HG changeset patch
# User Samuel Thibault <samuel.thibault@xxxxxxxxxxxxx>
# Date 1200578738 0
# Node ID 92de8fa028b8e6696fa386b7430537d1cf99e429
# Parent 4d261c3c7c20430433da2d59f3037f34f3598046
make stack size configurable
diff -r 4d261c3c7c20 -r 92de8fa028b8 extras/mini-os/arch/ia64/sched.c
--- a/extras/mini-os/arch/ia64/sched.c Thu Jan 17 13:44:56 2008 +0000
+++ b/extras/mini-os/arch/ia64/sched.c Thu Jan 17 14:05:38 2008 +0000
@@ -40,11 +40,11 @@ arch_create_thread(char *name, void (*fu
struct thread* _thread;
_thread = (struct thread*)_xmalloc(sizeof(struct thread), 16);
- /* Allocate 2 pages for stack, stack will be 2pages aligned */
- _thread->stack = (char *)alloc_pages(1);
+ /* Allocate pages for stack, stack will be aligned */
+ _thread->stack = (char *)alloc_pages(STACK_SIZE_PAGE_ORDER);
_thread->name = name;
memset((void*)&(_thread->regs), 0, sizeof(_thread->regs));
- _thread->regs.sp = ((uint64_t)_thread->stack) + 2 * PAGE_SIZE - 16;
+ _thread->regs.sp = ((uint64_t)_thread->stack) + STACK_SIZE - 16;
_thread->regs.bsp = ((uint64_t)_thread->stack) + 0x10;
_thread->regs.rp = FDESC_FUNC(thread_starter);
_thread->regs.pfs = 0x82;
diff -r 4d261c3c7c20 -r 92de8fa028b8 extras/mini-os/arch/x86/sched.c
--- a/extras/mini-os/arch/x86/sched.c Thu Jan 17 13:44:56 2008 +0000
+++ b/extras/mini-os/arch/x86/sched.c Thu Jan 17 14:05:38 2008 +0000
@@ -57,7 +57,7 @@
void dump_stack(struct thread *thread)
{
- unsigned long *bottom = (unsigned long *)(thread->stack + 2*4*1024);
+ unsigned long *bottom = (unsigned long *)(thread->stack + STACK_SIZE);
unsigned long *pointer = (unsigned long *)thread->sp;
int count;
if(thread == current)
@@ -98,13 +98,13 @@ struct thread* arch_create_thread(char *
struct thread *thread;
thread = xmalloc(struct thread);
- /* Allocate 2 pages for stack, stack will be 2pages aligned */
- thread->stack = (char *)alloc_pages(1);
+ /* We can't use lazy allocation here since the trap handler runs on the
stack */
+ thread->stack = (char *)alloc_pages(STACK_SIZE_PAGE_ORDER);
thread->name = name;
printk("Thread \"%s\": pointer: 0x%lx, stack: 0x%lx\n", name, thread,
thread->stack);
- thread->sp = (unsigned long)thread->stack + 4096 * 2;
+ thread->sp = (unsigned long)thread->stack + STACK_SIZE;
/* Save pointer to the thread on the stack, used by current macro */
*((unsigned long *)thread->stack) = (unsigned long)thread;
diff -r 4d261c3c7c20 -r 92de8fa028b8 extras/mini-os/arch/x86/setup.c
--- a/extras/mini-os/arch/x86/setup.c Thu Jan 17 13:44:56 2008 +0000
+++ b/extras/mini-os/arch/x86/setup.c Thu Jan 17 14:05:38 2008 +0000
@@ -45,7 +45,7 @@ union start_info_union start_info_union;
* Just allocate the kernel stack here. SS:ESP is set up to point here
* in head.S.
*/
-char stack[2*8192];
+char stack[2*STACK_SIZE];
extern char shared_info[PAGE_SIZE];
@@ -102,7 +102,7 @@ void
void
arch_print_info(void)
{
- printk(" stack: %p-%p\n", stack, stack + 2*8192);
+ printk(" stack: %p-%p\n", stack, stack + sizeof(stack));
}
diff -r 4d261c3c7c20 -r 92de8fa028b8 extras/mini-os/arch/x86/x86_32.S
--- a/extras/mini-os/arch/x86/x86_32.S Thu Jan 17 13:44:56 2008 +0000
+++ b/extras/mini-os/arch/x86/x86_32.S Thu Jan 17 14:05:38 2008 +0000
@@ -1,4 +1,5 @@
#include <os.h>
+#include <arch_mm.h>
#include <xen/arch-x86_32.h>
.section __xen_guest
@@ -21,12 +22,12 @@ _start:
_start:
cld
lss stack_start,%esp
- andl $(~(8192-1)), %esp
+ andl $(~(STACK_SIZE-1)), %esp
push %esi
call start_kernel
stack_start:
- .long stack+(2*8192), __KERNEL_SS
+ .long stack+(2*STACK_SIZE), __KERNEL_SS
/* Unpleasant -- the PTE that maps this page is actually overwritten */
/* to map the real shared-info page! :-) */
diff -r 4d261c3c7c20 -r 92de8fa028b8 extras/mini-os/arch/x86/x86_64.S
--- a/extras/mini-os/arch/x86/x86_64.S Thu Jan 17 13:44:56 2008 +0000
+++ b/extras/mini-os/arch/x86/x86_64.S Thu Jan 17 14:05:38 2008 +0000
@@ -1,4 +1,5 @@
#include <os.h>
+#include <arch_mm.h>
#include <xen/features.h>
.section __xen_guest
@@ -18,12 +19,12 @@ _start:
_start:
cld
movq stack_start(%rip),%rsp
- andq $(~(8192-1)), %rsp
+ andq $(~(STACK_SIZE-1)), %rsp
movq %rsi,%rdi
call start_kernel
stack_start:
- .quad stack+(2*8192)
+ .quad stack+(2*STACK_SIZE)
/* Unpleasant -- the PTE that maps this page is actually overwritten */
/* to map the real shared-info page! :-) */
diff -r 4d261c3c7c20 -r 92de8fa028b8 extras/mini-os/include/ia64/arch_mm.h
--- a/extras/mini-os/include/ia64/arch_mm.h Thu Jan 17 13:44:56 2008 +0000
+++ b/extras/mini-os/include/ia64/arch_mm.h Thu Jan 17 14:05:38 2008 +0000
@@ -33,4 +33,7 @@
#define virt_to_mfn(x) virt_to_pfn(x)
+#define STACK_SIZE_PAGE_ORDER 1
+#define STACK_SIZE (PAGE_SIZE * (1 << STACK_SIZE_PAGE_ORDER))
+
#endif /* __ARCH_MM_H__ */
diff -r 4d261c3c7c20 -r 92de8fa028b8 extras/mini-os/include/x86/arch_mm.h
--- a/extras/mini-os/include/x86/arch_mm.h Thu Jan 17 13:44:56 2008 +0000
+++ b/extras/mini-os/include/x86/arch_mm.h Thu Jan 17 14:05:38 2008 +0000
@@ -25,12 +25,15 @@
#ifndef _ARCH_MM_H_
#define _ARCH_MM_H_
+#ifndef __ASSEMBLY__
+#include <xen/xen.h>
#if defined(__i386__)
#include <xen/arch-x86_32.h>
#elif defined(__x86_64__)
#include <xen/arch-x86_64.h>
#else
#error "Unsupported architecture"
+#endif
#endif
#define L1_FRAME 1
@@ -53,7 +56,9 @@
#define NOT_L1_FRAMES 1
#define PRIpte "08lx"
+#ifndef __ASSEMBLY__
typedef unsigned long pgentry_t;
+#endif
#else /* defined(CONFIG_X86_PAE) */
@@ -76,7 +81,9 @@ typedef unsigned long pgentry_t;
*/
#define NOT_L1_FRAMES 3
#define PRIpte "016llx"
+#ifndef __ASSEMBLY__
typedef uint64_t pgentry_t;
+#endif
#endif /* !defined(CONFIG_X86_PAE) */
@@ -102,7 +109,9 @@ typedef uint64_t pgentry_t;
#define NOT_L1_FRAMES 3
#define PRIpte "016lx"
+#ifndef __ASSEMBLY__
typedef unsigned long pgentry_t;
+#endif
#endif
@@ -146,10 +155,14 @@ typedef unsigned long pgentry_t;
#define L4_PROT (_PAGE_PRESENT|_PAGE_RW|_PAGE_ACCESSED|_PAGE_DIRTY|_PAGE_USER)
#endif /* __i386__ || __x86_64__ */
+#ifdef __ASSEMBLY__
+#define PAGE_SIZE (1 << L1_PAGETABLE_SHIFT)
+#else
#ifndef CONFIG_X86_PAE
#define PAGE_SIZE (1UL << L1_PAGETABLE_SHIFT)
#else
#define PAGE_SIZE (1ULL << L1_PAGETABLE_SHIFT)
+#endif
#endif
#define PAGE_SHIFT L1_PAGETABLE_SHIFT
#define PAGE_MASK (~(PAGE_SIZE-1))
@@ -162,6 +175,10 @@ typedef unsigned long pgentry_t;
/* to align the pointer to the (next) page boundary */
#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
+#define STACK_SIZE_PAGE_ORDER 1
+#define STACK_SIZE (PAGE_SIZE * (1 << STACK_SIZE_PAGE_ORDER))
+
+#ifndef __ASSEMBLY__
/* Definitions for machine and pseudophysical addresses. */
#ifdef CONFIG_X86_PAE
typedef unsigned long long paddr_t;
@@ -188,6 +205,7 @@ static __inline__ paddr_t machine_to_phy
phys = (phys << PAGE_SHIFT) | (machine & ~PAGE_MASK);
return phys;
}
+#endif
#define VIRT_START ((unsigned long)&_text)
diff -r 4d261c3c7c20 -r 92de8fa028b8 extras/mini-os/include/x86/arch_sched.h
--- a/extras/mini-os/include/x86/arch_sched.h Thu Jan 17 13:44:56 2008 +0000
+++ b/extras/mini-os/include/x86/arch_sched.h Thu Jan 17 14:05:38 2008 +0000
@@ -2,6 +2,7 @@
#ifndef __ARCH_SCHED_H__
#define __ARCH_SCHED_H__
+#include <arch_mm.h>
static inline struct thread* get_current(void)
{
@@ -11,7 +12,7 @@ static inline struct thread* get_current
#else
register unsigned long sp asm("rsp");
#endif
- current = (void *)(sp & ~8191UL);
+ current = (void *)(sp & ~(STACK_SIZE-1));
return *current;
}
diff -r 4d261c3c7c20 -r 92de8fa028b8 extras/mini-os/sched.c
--- a/extras/mini-os/sched.c Thu Jan 17 13:44:56 2008 +0000
+++ b/extras/mini-os/sched.c Thu Jan 17 14:05:38 2008 +0000
@@ -139,7 +139,7 @@ void schedule(void)
if(thread != prev)
{
list_del(&thread->thread_list);
- free_pages(thread->stack, 1);
+ free_pages(thread->stack, STACK_SIZE_PAGE_ORDER);
xfree(thread);
}
}
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
 |
Lists.xenproject.org is hosted with RackSpace, monitoring our |