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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] Manual merge.
# HG changeset patch
# User smh22@xxxxxxxxxxxxxxxxxxxx
# Node ID 0db6a59abb955be772d94ba32fe1a34a26db86da
# Parent 6a83d157a391d246dfb8bae6a936f6f8266a5818
# Parent 90f2b122fc43c72d1e4005e9278b26ba18bf1df0
Manual merge.
diff -r 6a83d157a391 -r 0db6a59abb95 linux-2.4-xen-sparse/arch/xen/kernel/time.c
--- a/linux-2.4-xen-sparse/arch/xen/kernel/time.c Mon Aug 1 10:45:07 2005
+++ b/linux-2.4-xen-sparse/arch/xen/kernel/time.c Mon Aug 1 10:48:24 2005
@@ -225,21 +225,30 @@
*/
static void __get_time_values_from_xen(void)
{
- do {
- shadow_time_version = HYPERVISOR_shared_info->time_version2;
- rmb();
- shadow_tv.tv_sec = HYPERVISOR_shared_info->wc_sec;
- shadow_tv.tv_usec = HYPERVISOR_shared_info->wc_usec;
- shadow_tsc_stamp =
- (u32)(HYPERVISOR_shared_info->tsc_timestamp >> rdtsc_bitshift);
- shadow_system_time = HYPERVISOR_shared_info->system_time;
- rmb();
- }
- while ( shadow_time_version != HYPERVISOR_shared_info->time_version1 );
-}
-
-#define TIME_VALUES_UP_TO_DATE \
- ({ rmb(); (shadow_time_version == HYPERVISOR_shared_info->time_version2); })
+ shared_info_t *s = HYPERVISOR_shared_info;
+ struct vcpu_time_info *src;
+ struct shadow_time_info *dst;
+
+ src = &s->vcpu_time[smp_processor_id()];
+ dst = &per_cpu(shadow_time, smp_processor_id());
+
+ do {
+ dst->version = src->time_version2;
+ rmb();
+ dst->tsc_timestamp = src->tsc_timestamp;
+ dst->system_timestamp = src->system_time;
+ dst->tsc_to_nsec_mul = src->tsc_to_system_mul;
+ dst->tsc_shift = src->tsc_shift;
+ rmb();
+ }
+ while (dst->version != src->time_version1);
+
+ dst->tsc_to_usec_mul = dst->tsc_to_nsec_mul / 1000;
+
+ if ((shadow_tv.tv_sec != s->wc_sec) ||
+ (shadow_tv.tv_usec != s->wc_usec))
+ update_wallclock();
+}
/*
@@ -263,6 +272,17 @@
return (unsigned long)delta;
}
+static inline int time_values_up_to_date()
+{
+ struct vcpu_time_info *src;
+ struct shadow_time_info *dst;
+
+ src = &HYPERVISOR_shared_info->vcpu_time[smp_processor_id()];
+ dst = &per_cpu(shadow_time, smp_processor_id());
+
+ return (dst->version == src->time_version2);
+}
+
/*
* Returns the current time-of-day in UTC timeval format.
@@ -286,7 +306,7 @@
__normalize_time(&_tv.tv_sec, &nsec);
_tv.tv_usec += (long)nsec / 1000L;
- if ( unlikely(!TIME_VALUES_UP_TO_DATE) )
+ if ( unlikely(!time_values_up_to_date()) )
{
/*
* We may have blocked for a long time, rendering our calculations
diff -r 6a83d157a391 -r 0db6a59abb95
linux-2.6-xen-sparse/arch/xen/configs/xen0_defconfig_x86_32
--- a/linux-2.6-xen-sparse/arch/xen/configs/xen0_defconfig_x86_32 Mon Aug
1 10:45:07 2005
+++ b/linux-2.6-xen-sparse/arch/xen/configs/xen0_defconfig_x86_32 Mon Aug
1 10:48:24 2005
@@ -18,8 +18,8 @@
CONFIG_XEN_NETDEV_BACKEND=y
CONFIG_XEN_BLKDEV_FRONTEND=y
CONFIG_XEN_NETDEV_FRONTEND=y
-# CONFIG_XEN_NETDEV_GRANT_TX is not set
-# CONFIG_XEN_NETDEV_GRANT_RX is not set
+CONFIG_XEN_NETDEV_GRANT_TX=y
+ CONFIG_XEN_NETDEV_GRANT_RX=y
# CONFIG_XEN_NETDEV_FRONTEND_PIPELINED_TRANSMITTER is not set
# CONFIG_XEN_BLKDEV_TAP is not set
# CONFIG_XEN_SHADOW_MODE is not set
diff -r 6a83d157a391 -r 0db6a59abb95
linux-2.6-xen-sparse/arch/xen/configs/xenU_defconfig_x86_32
--- a/linux-2.6-xen-sparse/arch/xen/configs/xenU_defconfig_x86_32 Mon Aug
1 10:45:07 2005
+++ b/linux-2.6-xen-sparse/arch/xen/configs/xenU_defconfig_x86_32 Mon Aug
1 10:48:24 2005
@@ -15,8 +15,8 @@
CONFIG_XEN_BLKDEV_GRANT=y
CONFIG_XEN_BLKDEV_FRONTEND=y
CONFIG_XEN_NETDEV_FRONTEND=y
-# CONFIG_XEN_NETDEV_GRANT_TX is not set
-# CONFIG_XEN_NETDEV_GRANT_RX is not set
+CONFIG_XEN_NETDEV_GRANT_TX=y
+CONFIG_XEN_NETDEV_GRANT_RX=y
# CONFIG_XEN_NETDEV_FRONTEND_PIPELINED_TRANSMITTER is not set
# CONFIG_XEN_BLKDEV_TAP is not set
# CONFIG_XEN_SHADOW_MODE is not set
diff -r 6a83d157a391 -r 0db6a59abb95
linux-2.6-xen-sparse/arch/xen/i386/kernel/traps.c
--- a/linux-2.6-xen-sparse/arch/xen/i386/kernel/traps.c Mon Aug 1 10:45:07 2005
+++ b/linux-2.6-xen-sparse/arch/xen/i386/kernel/traps.c Mon Aug 1 10:48:24 2005
@@ -90,9 +90,7 @@
static int kstack_depth_to_print = 24;
struct notifier_block *i386die_chain;
-DEFINE_SPINLOCK(die_notifier_lock);
-EXPORT_SYMBOL(die_notifier_lock);
-EXPORT_SYMBOL(i386die_chain);
+static DEFINE_SPINLOCK(die_notifier_lock);
int register_die_notifier(struct notifier_block *nb)
{
diff -r 6a83d157a391 -r 0db6a59abb95 tools/debugger/pdb/Makefile
--- a/tools/debugger/pdb/Makefile Mon Aug 1 10:45:07 2005
+++ b/tools/debugger/pdb/Makefile Mon Aug 1 10:48:24 2005
@@ -33,7 +33,7 @@
LIBS += unix str
# bc = byte-code, dc = debug byte-code
-all : dc
+all : patches dc
SOURCES += pdb_caml_xc.c
SOURCES += pdb_caml_domain.c pdb_caml_process.c
@@ -50,3 +50,6 @@
include $(OCAMLMAKEFILE)
+PATCHDIR = ./linux-2.6-patches
+patches :
+ make -C $(PATCHDIR) patches
diff -r 6a83d157a391 -r 0db6a59abb95
tools/debugger/pdb/linux-2.6-module/module.c
--- a/tools/debugger/pdb/linux-2.6-module/module.c Mon Aug 1 10:45:07 2005
+++ b/tools/debugger/pdb/linux-2.6-module/module.c Mon Aug 1 10:48:24 2005
@@ -278,14 +278,10 @@
return err;
}
-extern struct notifier_block *i386die_chain;
-extern spinlock_t die_notifier_lock;
-
static void __exit
pdb_terminate(void)
{
int err = 0;
- unsigned long flags;
printk("pdb cleanup\n");
@@ -305,9 +301,8 @@
pdb_send_connection_status(PDB_CONNECTION_STATUS_DOWN, 0);
- spin_lock_irqsave(&die_notifier_lock, flags);
- err = notifier_chain_unregister(&i386die_chain, &pdb_exceptions_nb);
- spin_unlock_irqrestore(&die_notifier_lock, flags);
+ /* handler for int1 & int3 */
+ err = unregister_die_notifier(&pdb_exceptions_nb);
return;
}
diff -r 6a83d157a391 -r 0db6a59abb95
tools/debugger/pdb/linux-2.6-patches/Makefile
--- /dev/null Mon Aug 1 10:45:07 2005
+++ b/tools/debugger/pdb/linux-2.6-patches/Makefile Mon Aug 1 10:48:24 2005
@@ -0,0 +1,10 @@
+XEN_ROOT = ../../../..
+LINUX_DIR = linux-2.6.12-xenU
+KDIR = $(XEN_ROOT)/$(LINUX_DIR)
+PATCH_DIR = $(CURDIR)
+
+patches : patches-done
+
+patches-done :
+ ( for i in *.patch ; do ( cd $(KDIR) ; patch -p1 < $(PATCH_DIR)/$$i ||
exit 1 ) ; done )
+ touch $@
diff -r 6a83d157a391 -r 0db6a59abb95
tools/debugger/pdb/linux-2.6-patches/i386_ksyms.patch
--- /dev/null Mon Aug 1 10:45:07 2005
+++ b/tools/debugger/pdb/linux-2.6-patches/i386_ksyms.patch Mon Aug 1
10:48:24 2005
@@ -0,0 +1,11 @@
+diff -u linux-2.6.12/arch/xen/i386/kernel/i386_ksyms.c
linux-2.6.12-pdb/arch/xen/i386/kernel/i386_ksyms.c
+--- linux-2.6.12/arch/xen/i386/kernel/i386_ksyms.c 2005-07-31
22:36:50.000000000 +0100
++++ linux-2.6.12-pdb/arch/xen/i386/kernel/i386_ksyms.c 2005-08-01
10:57:31.000000000 +0100
+@@ -172,6 +172,7 @@
+ EXPORT_SYMBOL_GPL(unset_nmi_callback);
+
+ EXPORT_SYMBOL(register_die_notifier);
++EXPORT_SYMBOL(unregister_die_notifier);
+ #ifdef CONFIG_HAVE_DEC_LOCK
+ EXPORT_SYMBOL(_atomic_dec_and_lock);
+ #endif
diff -r 6a83d157a391 -r 0db6a59abb95
tools/debugger/pdb/linux-2.6-patches/kdebug.patch
--- /dev/null Mon Aug 1 10:45:07 2005
+++ b/tools/debugger/pdb/linux-2.6-patches/kdebug.patch Mon Aug 1 10:48:24 2005
@@ -0,0 +1,11 @@
+diff -u linux-2.6.12/include/asm-i386/kdebug.h
linux-2.6.12-pdb/include/asm-i386/kdebug.h
+--- linux-2.6.12/include/asm-i386/kdebug.h 2005-06-17 20:48:29.000000000
+0100
++++ linux-2.6.12-pdb/include/asm-i386/kdebug.h 2005-08-01 11:11:53.000000000
+0100
+@@ -21,6 +21,7 @@
+ If you really want to do it first unregister - then synchronize_kernel -
then free.
+ */
+ int register_die_notifier(struct notifier_block *nb);
++int unregister_die_notifier(struct notifier_block *nb);
+ extern struct notifier_block *i386die_chain;
+
+
diff -r 6a83d157a391 -r 0db6a59abb95
tools/debugger/pdb/linux-2.6-patches/makefile.patch
--- /dev/null Mon Aug 1 10:45:07 2005
+++ b/tools/debugger/pdb/linux-2.6-patches/makefile.patch Mon Aug 1
10:48:24 2005
@@ -0,0 +1,12 @@
+diff -Naur linux-2.6.12/Makefile linux-2.6.12-pdb/Makefile
+--- linux-2.6.12/Makefile 2005-08-01 01:21:21.000000000 +0100
++++ linux-2.6.12-pdb/Makefile 2005-08-01 10:28:10.000000000 +0100
+@@ -508,7 +508,7 @@
+ ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
+ CFLAGS += -Os
+ else
+-CFLAGS += -O2
++CFLAGS += -O
+ endif
+
+ #Add align options if CONFIG_CC_* is not equal to 0
diff -r 6a83d157a391 -r 0db6a59abb95
tools/debugger/pdb/linux-2.6-patches/ptrace.patch
--- /dev/null Mon Aug 1 10:45:07 2005
+++ b/tools/debugger/pdb/linux-2.6-patches/ptrace.patch Mon Aug 1 10:48:24 2005
@@ -0,0 +1,11 @@
+diff -u linux-2.6.12/kernel/ptrace.c linux-2.6.12-pdb/kernel/ptrace.c
+--- linux-2.6.12/kernel/ptrace.c 2005-06-17 20:48:29.000000000 +0100
++++ linux-2.6.12-pdb/kernel/ptrace.c 2005-07-22 13:23:16.000000000 +0100
+@@ -239,6 +239,7 @@
+
+ return buf - old_buf;
+ }
++EXPORT_SYMBOL(access_process_vm);
+
+ int ptrace_readdata(struct task_struct *tsk, unsigned long src, char __user
*dst, int len)
+ {
diff -r 6a83d157a391 -r 0db6a59abb95
tools/debugger/pdb/linux-2.6-patches/traps.patch
--- /dev/null Mon Aug 1 10:45:07 2005
+++ b/tools/debugger/pdb/linux-2.6-patches/traps.patch Mon Aug 1 10:48:24 2005
@@ -0,0 +1,20 @@
+diff -u linux-2.6.12/arch/xen/i386/kernel/traps.c
linux-2.6.12-pdb/arch/xen/i386/kernel/traps.c
+--- linux-2.6.12/arch/xen/i386/kernel/traps.c 2005-07-31 22:47:00.000000000
+0100
++++ linux-2.6.12-pdb/arch/xen/i386/kernel/traps.c 2005-07-31
22:47:32.000000000 +0100
+@@ -102,6 +102,16 @@
+ return err;
+ }
+
++int unregister_die_notifier(struct notifier_block *nb)
++{
++ int err = 0;
++ unsigned long flags;
++ spin_lock_irqsave(&die_notifier_lock, flags);
++ err = notifier_chain_unregister(&i386die_chain, nb);
++ spin_unlock_irqrestore(&die_notifier_lock, flags);
++ return err;
++}
++
+ static inline int valid_stack_ptr(struct thread_info *tinfo, void *p)
+ {
+ return p > (void *)tinfo &&
diff -r 6a83d157a391 -r 0db6a59abb95 linux-2.6-xen-sparse/kernel/ptrace.c
--- a/linux-2.6-xen-sparse/kernel/ptrace.c Mon Aug 1 10:45:07 2005
+++ /dev/null Mon Aug 1 10:48:24 2005
@@ -1,391 +0,0 @@
-/*
- * linux/kernel/ptrace.c
- *
- * (C) Copyright 1999 Linus Torvalds
- *
- * Common interfaces for "ptrace()" which we do not want
- * to continually duplicate across every architecture.
- */
-
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/errno.h>
-#include <linux/mm.h>
-#include <linux/highmem.h>
-#include <linux/pagemap.h>
-#include <linux/smp_lock.h>
-#include <linux/ptrace.h>
-#include <linux/security.h>
-#include <linux/signal.h>
-
-#include <asm/pgtable.h>
-#include <asm/uaccess.h>
-
-/*
- * ptrace a task: make the debugger its new parent and
- * move it to the ptrace list.
- *
- * Must be called with the tasklist lock write-held.
- */
-void __ptrace_link(task_t *child, task_t *new_parent)
-{
- if (!list_empty(&child->ptrace_list))
- BUG();
- if (child->parent == new_parent)
- return;
- list_add(&child->ptrace_list, &child->parent->ptrace_children);
- REMOVE_LINKS(child);
- child->parent = new_parent;
- SET_LINKS(child);
-}
-
-/*
- * Turn a tracing stop into a normal stop now, since with no tracer there
- * would be no way to wake it up with SIGCONT or SIGKILL. If there was a
- * signal sent that would resume the child, but didn't because it was in
- * TASK_TRACED, resume it now.
- * Requires that irqs be disabled.
- */
-void ptrace_untrace(task_t *child)
-{
- spin_lock(&child->sighand->siglock);
- if (child->state == TASK_TRACED) {
- if (child->signal->flags & SIGNAL_STOP_STOPPED) {
- child->state = TASK_STOPPED;
- } else {
- signal_wake_up(child, 1);
- }
- }
- spin_unlock(&child->sighand->siglock);
-}
-
-/*
- * unptrace a task: move it back to its original parent and
- * remove it from the ptrace list.
- *
- * Must be called with the tasklist lock write-held.
- */
-void __ptrace_unlink(task_t *child)
-{
- if (!child->ptrace)
- BUG();
- child->ptrace = 0;
- if (!list_empty(&child->ptrace_list)) {
- list_del_init(&child->ptrace_list);
- REMOVE_LINKS(child);
- child->parent = child->real_parent;
- SET_LINKS(child);
- }
-
- if (child->state == TASK_TRACED)
- ptrace_untrace(child);
-}
-
-/*
- * Check that we have indeed attached to the thing..
- */
-int ptrace_check_attach(struct task_struct *child, int kill)
-{
- int ret = -ESRCH;
-
- /*
- * We take the read lock around doing both checks to close a
- * possible race where someone else was tracing our child and
- * detached between these two checks. After this locked check,
- * we are sure that this is our traced child and that can only
- * be changed by us so it's not changing right after this.
- */
- read_lock(&tasklist_lock);
- if ((child->ptrace & PT_PTRACED) && child->parent == current &&
- (!(child->ptrace & PT_ATTACHED) || child->real_parent != current)
- && child->signal != NULL) {
- ret = 0;
- spin_lock_irq(&child->sighand->siglock);
- if (child->state == TASK_STOPPED) {
- child->state = TASK_TRACED;
- } else if (child->state != TASK_TRACED && !kill) {
- ret = -ESRCH;
- }
- spin_unlock_irq(&child->sighand->siglock);
- }
- read_unlock(&tasklist_lock);
-
- if (!ret && !kill) {
- wait_task_inactive(child);
- }
-
- /* All systems go.. */
- return ret;
-}
-
-int ptrace_attach(struct task_struct *task)
-{
- int retval;
- task_lock(task);
- retval = -EPERM;
- if (task->pid <= 1)
- goto bad;
- if (task == current)
- goto bad;
- if (!task->mm)
- goto bad;
- if(((current->uid != task->euid) ||
- (current->uid != task->suid) ||
- (current->uid != task->uid) ||
- (current->gid != task->egid) ||
- (current->gid != task->sgid) ||
- (current->gid != task->gid)) && !capable(CAP_SYS_PTRACE))
- goto bad;
- smp_rmb();
- if (!task->mm->dumpable && !capable(CAP_SYS_PTRACE))
- goto bad;
- /* the same process cannot be attached many times */
- if (task->ptrace & PT_PTRACED)
- goto bad;
- retval = security_ptrace(current, task);
- if (retval)
- goto bad;
-
- /* Go */
- task->ptrace |= PT_PTRACED | ((task->real_parent != current)
- ? PT_ATTACHED : 0);
- if (capable(CAP_SYS_PTRACE))
- task->ptrace |= PT_PTRACE_CAP;
- task_unlock(task);
-
- write_lock_irq(&tasklist_lock);
- __ptrace_link(task, current);
- write_unlock_irq(&tasklist_lock);
-
- force_sig_specific(SIGSTOP, task);
- return 0;
-
-bad:
- task_unlock(task);
- return retval;
-}
-
-int ptrace_detach(struct task_struct *child, unsigned int data)
-{
- if (!valid_signal(data))
- return -EIO;
-
- /* Architecture-specific hardware disable .. */
- ptrace_disable(child);
-
- /* .. re-parent .. */
- child->exit_code = data;
-
- write_lock_irq(&tasklist_lock);
- __ptrace_unlink(child);
- /* .. and wake it up. */
- if (child->exit_state != EXIT_ZOMBIE)
- wake_up_process(child);
- write_unlock_irq(&tasklist_lock);
-
- return 0;
-}
-
-/*
- * Access another process' address space.
- * Source/target buffer must be kernel space,
- * Do not walk the page table directly, use get_user_pages
- */
-
-int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf,
int len, int write)
-{
- struct mm_struct *mm;
- struct vm_area_struct *vma;
- struct page *page;
- void *old_buf = buf;
-
- mm = get_task_mm(tsk);
- if (!mm)
- return 0;
-
- down_read(&mm->mmap_sem);
- /* ignore errors, just check how much was sucessfully transfered */
- while (len) {
- int bytes, ret, offset;
- void *maddr;
-
- ret = get_user_pages(tsk, mm, addr, 1,
- write, 1, &page, &vma);
- if (ret <= 0)
- break;
-
- bytes = len;
- offset = addr & (PAGE_SIZE-1);
- if (bytes > PAGE_SIZE-offset)
- bytes = PAGE_SIZE-offset;
-
- maddr = kmap(page);
- if (write) {
- copy_to_user_page(vma, page, addr,
- maddr + offset, buf, bytes);
- set_page_dirty_lock(page);
- } else {
- copy_from_user_page(vma, page, addr,
- buf, maddr + offset, bytes);
- }
- kunmap(page);
- page_cache_release(page);
- len -= bytes;
- buf += bytes;
- addr += bytes;
- }
- up_read(&mm->mmap_sem);
- mmput(mm);
-
- return buf - old_buf;
-}
-EXPORT_SYMBOL(access_process_vm);
-
-int ptrace_readdata(struct task_struct *tsk, unsigned long src, char __user
*dst, int len)
-{
- int copied = 0;
-
- while (len > 0) {
- char buf[128];
- int this_len, retval;
-
- this_len = (len > sizeof(buf)) ? sizeof(buf) : len;
- retval = access_process_vm(tsk, src, buf, this_len, 0);
- if (!retval) {
- if (copied)
- break;
- return -EIO;
- }
- if (copy_to_user(dst, buf, retval))
- return -EFAULT;
- copied += retval;
- src += retval;
- dst += retval;
- len -= retval;
- }
- return copied;
-}
-
-int ptrace_writedata(struct task_struct *tsk, char __user *src, unsigned long
dst, int len)
-{
- int copied = 0;
-
- while (len > 0) {
- char buf[128];
- int this_len, retval;
-
- this_len = (len > sizeof(buf)) ? sizeof(buf) : len;
- if (copy_from_user(buf, src, this_len))
- return -EFAULT;
- retval = access_process_vm(tsk, dst, buf, this_len, 1);
- if (!retval) {
- if (copied)
- break;
- return -EIO;
- }
- copied += retval;
- src += retval;
- dst += retval;
- len -= retval;
- }
- return copied;
-}
-
-static int ptrace_setoptions(struct task_struct *child, long data)
-{
- child->ptrace &= ~PT_TRACE_MASK;
-
- if (data & PTRACE_O_TRACESYSGOOD)
- child->ptrace |= PT_TRACESYSGOOD;
-
- if (data & PTRACE_O_TRACEFORK)
- child->ptrace |= PT_TRACE_FORK;
-
- if (data & PTRACE_O_TRACEVFORK)
- child->ptrace |= PT_TRACE_VFORK;
-
- if (data & PTRACE_O_TRACECLONE)
- child->ptrace |= PT_TRACE_CLONE;
-
- if (data & PTRACE_O_TRACEEXEC)
- child->ptrace |= PT_TRACE_EXEC;
-
- if (data & PTRACE_O_TRACEVFORKDONE)
- child->ptrace |= PT_TRACE_VFORK_DONE;
-
- if (data & PTRACE_O_TRACEEXIT)
- child->ptrace |= PT_TRACE_EXIT;
-
- return (data & ~PTRACE_O_MASK) ? -EINVAL : 0;
-}
-
-static int ptrace_getsiginfo(struct task_struct *child, siginfo_t __user *
data)
-{
- siginfo_t lastinfo;
- int error = -ESRCH;
-
- read_lock(&tasklist_lock);
- if (likely(child->sighand != NULL)) {
- error = -EINVAL;
- spin_lock_irq(&child->sighand->siglock);
- if (likely(child->last_siginfo != NULL)) {
- lastinfo = *child->last_siginfo;
- error = 0;
- }
- spin_unlock_irq(&child->sighand->siglock);
- }
- read_unlock(&tasklist_lock);
- if (!error)
- return copy_siginfo_to_user(data, &lastinfo);
- return error;
-}
-
-static int ptrace_setsiginfo(struct task_struct *child, siginfo_t __user *
data)
-{
- siginfo_t newinfo;
- int error = -ESRCH;
-
- if (copy_from_user(&newinfo, data, sizeof (siginfo_t)))
- return -EFAULT;
-
- read_lock(&tasklist_lock);
- if (likely(child->sighand != NULL)) {
- error = -EINVAL;
- spin_lock_irq(&child->sighand->siglock);
- if (likely(child->last_siginfo != NULL)) {
- *child->last_siginfo = newinfo;
- error = 0;
- }
- spin_unlock_irq(&child->sighand->siglock);
- }
- read_unlock(&tasklist_lock);
- return error;
-}
-
-int ptrace_request(struct task_struct *child, long request,
- long addr, long data)
-{
- int ret = -EIO;
-
- switch (request) {
-#ifdef PTRACE_OLDSETOPTIONS
- case PTRACE_OLDSETOPTIONS:
-#endif
- case PTRACE_SETOPTIONS:
- ret = ptrace_setoptions(child, data);
- break;
- case PTRACE_GETEVENTMSG:
- ret = put_user(child->ptrace_message, (unsigned long __user *)
data);
- break;
- case PTRACE_GETSIGINFO:
- ret = ptrace_getsiginfo(child, (siginfo_t __user *) data);
- break;
- case PTRACE_SETSIGINFO:
- ret = ptrace_setsiginfo(child, (siginfo_t __user *) data);
- break;
- default:
- break;
- }
-
- return ret;
-}
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