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-rw-r--r--arch/powerpc/kernel/entry_32.S5
-rw-r--r--arch/powerpc/kernel/entry_64.S8
-rw-r--r--arch/powerpc/kernel/pci-common.c4
-rw-r--r--arch/powerpc/kernel/pci_64.c4
-rw-r--r--arch/powerpc/kernel/process.c64
-rw-r--r--arch/powerpc/kernel/signal.c4
-rw-r--r--arch/powerpc/kernel/sysfs.c4
-rw-r--r--arch/powerpc/kernel/time.c20
-rw-r--r--arch/powerpc/kernel/uprobes.c6
9 files changed, 27 insertions, 92 deletions
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index 9499385676e..d22e73e4618 100644
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -444,11 +444,6 @@ ret_from_kernel_thread:
PPC440EP_ERR42
blrl
li r3,0
- b do_exit # no return
-
- .globl __ret_from_kernel_execve
-__ret_from_kernel_execve:
- addi r1,r3,-STACK_FRAME_OVERHEAD
b ret_from_syscall
/* Traced system call support */
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index 56e0ff0878b..e9a906c2723 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -373,17 +373,11 @@ _GLOBAL(ret_from_fork)
_GLOBAL(ret_from_kernel_thread)
bl .schedule_tail
REST_NVGPRS(r1)
- REST_GPR(2,r1)
+ ld r14, 0(r14)
mtlr r14
mr r3,r15
blrl
li r3,0
- b .do_exit # no return
-
-_GLOBAL(__ret_from_kernel_execve)
- addi r1,r3,-STACK_FRAME_OVERHEAD
- li r10,1
- std r10,SOFTE(r1)
b syscall_exit
.section ".toc","aw"
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 7f94f760dd0..abc0d085699 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -1428,8 +1428,6 @@ void __init pcibios_resource_survey(void)
ppc_md.pcibios_fixup();
}
-#ifdef CONFIG_HOTPLUG
-
/* This is used by the PCI hotplug driver to allocate resource
* of newly plugged busses. We can try to consolidate with the
* rest of the code later, for now, keep it as-is as our main
@@ -1488,8 +1486,6 @@ void pcibios_finish_adding_to_bus(struct pci_bus *bus)
}
EXPORT_SYMBOL_GPL(pcibios_finish_adding_to_bus);
-#endif /* CONFIG_HOTPLUG */
-
int pcibios_enable_device(struct pci_dev *dev, int mask)
{
if (ppc_md.pcibios_enable_device_hook)
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index 4ff190ff24a..2cbe6768fdd 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -74,8 +74,6 @@ static int __init pcibios_init(void)
subsys_initcall(pcibios_init);
-#ifdef CONFIG_HOTPLUG
-
int pcibios_unmap_io_space(struct pci_bus *bus)
{
struct pci_controller *hose;
@@ -124,8 +122,6 @@ int pcibios_unmap_io_space(struct pci_bus *bus)
}
EXPORT_SYMBOL_GPL(pcibios_unmap_io_space);
-#endif /* CONFIG_HOTPLUG */
-
static int __devinit pcibios_map_phb_io_space(struct pci_controller *hose)
{
struct vm_struct *area;
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index ba48233500f..81430674e71 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -733,8 +733,7 @@ int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src)
extern unsigned long dscr_default; /* defined in arch/powerpc/kernel/sysfs.c */
int copy_thread(unsigned long clone_flags, unsigned long usp,
- unsigned long arg, struct task_struct *p,
- struct pt_regs *regs)
+ unsigned long arg, struct task_struct *p)
{
struct pt_regs *childregs, *kregs;
extern void ret_from_fork(void);
@@ -745,25 +744,25 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
/* Copy registers */
sp -= sizeof(struct pt_regs);
childregs = (struct pt_regs *) sp;
- if (!regs) {
- /* for kernel thread, set `current' and stackptr in new task */
+ if (unlikely(p->flags & PF_KTHREAD)) {
+ struct thread_info *ti = (void *)task_stack_page(p);
memset(childregs, 0, sizeof(struct pt_regs));
childregs->gpr[1] = sp + sizeof(struct pt_regs);
+ childregs->gpr[14] = usp; /* function */
#ifdef CONFIG_PPC64
- childregs->gpr[14] = *(unsigned long *)usp;
- childregs->gpr[2] = ((unsigned long *)usp)[1],
clear_tsk_thread_flag(p, TIF_32BIT);
-#else
- childregs->gpr[14] = usp; /* function */
- childregs->gpr[2] = (unsigned long) p;
+ childregs->softe = 1;
#endif
childregs->gpr[15] = arg;
p->thread.regs = NULL; /* no user register state */
+ ti->flags |= _TIF_RESTOREALL;
f = ret_from_kernel_thread;
} else {
+ struct pt_regs *regs = current_pt_regs();
CHECK_FULL_REGS(regs);
*childregs = *regs;
- childregs->gpr[1] = usp;
+ if (usp)
+ childregs->gpr[1] = usp;
p->thread.regs = childregs;
childregs->gpr[3] = 0; /* Result from fork() */
if (clone_flags & CLONE_SETTLS) {
@@ -1027,51 +1026,6 @@ int get_unalign_ctl(struct task_struct *tsk, unsigned long adr)
return put_user(tsk->thread.align_ctl, (unsigned int __user *)adr);
}
-#define TRUNC_PTR(x) ((typeof(x))(((unsigned long)(x)) & 0xffffffff))
-
-int sys_clone(unsigned long clone_flags, unsigned long usp,
- int __user *parent_tidp, void __user *child_threadptr,
- int __user *child_tidp, int p6,
- struct pt_regs *regs)
-{
- CHECK_FULL_REGS(regs);
- if (usp == 0)
- usp = regs->gpr[1]; /* stack pointer for child */
-#ifdef CONFIG_PPC64
- if (is_32bit_task()) {
- parent_tidp = TRUNC_PTR(parent_tidp);
- child_tidp = TRUNC_PTR(child_tidp);
- }
-#endif
- return do_fork(clone_flags, usp, regs, 0, parent_tidp, child_tidp);
-}
-
-int sys_fork(unsigned long p1, unsigned long p2, unsigned long p3,
- unsigned long p4, unsigned long p5, unsigned long p6,
- struct pt_regs *regs)
-{
- CHECK_FULL_REGS(regs);
- return do_fork(SIGCHLD, regs->gpr[1], regs, 0, NULL, NULL);
-}
-
-int sys_vfork(unsigned long p1, unsigned long p2, unsigned long p3,
- unsigned long p4, unsigned long p5, unsigned long p6,
- struct pt_regs *regs)
-{
- CHECK_FULL_REGS(regs);
- return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, regs->gpr[1],
- regs, 0, NULL, NULL);
-}
-
-void __ret_from_kernel_execve(struct pt_regs *normal)
-__noreturn;
-
-void ret_from_kernel_execve(struct pt_regs *normal)
-{
- set_thread_flag(TIF_RESTOREALL);
- __ret_from_kernel_execve(normal);
-}
-
static inline int valid_irq_stack(unsigned long sp, struct task_struct *p,
unsigned long nbytes)
{
diff --git a/arch/powerpc/kernel/signal.c b/arch/powerpc/kernel/signal.c
index a2dc75793bd..3b997118df5 100644
--- a/arch/powerpc/kernel/signal.c
+++ b/arch/powerpc/kernel/signal.c
@@ -158,10 +158,8 @@ static int do_signal(struct pt_regs *regs)
void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags)
{
- if (thread_info_flags & _TIF_UPROBE) {
- clear_thread_flag(TIF_UPROBE);
+ if (thread_info_flags & _TIF_UPROBE)
uprobe_notify_resume(regs);
- }
if (thread_info_flags & _TIF_SIGPENDING)
do_signal(regs);
diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index cf357a059dd..3ce1f864c2d 100644
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c
@@ -607,7 +607,7 @@ static void register_nodes(void)
int sysfs_add_device_to_node(struct device *dev, int nid)
{
- struct node *node = &node_devices[nid];
+ struct node *node = node_devices[nid];
return sysfs_create_link(&node->dev.kobj, &dev->kobj,
kobject_name(&dev->kobj));
}
@@ -615,7 +615,7 @@ EXPORT_SYMBOL_GPL(sysfs_add_device_to_node);
void sysfs_remove_device_from_node(struct device *dev, int nid)
{
- struct node *node = &node_devices[nid];
+ struct node *node = node_devices[nid];
sysfs_remove_link(&node->dev.kobj, kobject_name(&dev->kobj));
}
EXPORT_SYMBOL_GPL(sysfs_remove_device_from_node);
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index ce4cb772dc7..b3b14352b05 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -297,6 +297,8 @@ static u64 vtime_delta(struct task_struct *tsk,
u64 now, nowscaled, deltascaled;
u64 udelta, delta, user_scaled;
+ WARN_ON_ONCE(!irqs_disabled());
+
now = mftb();
nowscaled = read_spurr(now);
get_paca()->system_time += now - get_paca()->starttime;
@@ -355,15 +357,15 @@ void vtime_account_idle(struct task_struct *tsk)
}
/*
- * Transfer the user and system times accumulated in the paca
- * by the exception entry and exit code to the generic process
- * user and system time records.
+ * Transfer the user time accumulated in the paca
+ * by the exception entry and exit code to the generic
+ * process user time records.
* Must be called with interrupts disabled.
- * Assumes that vtime_account() has been called recently
- * (i.e. since the last entry from usermode) so that
+ * Assumes that vtime_account_system/idle() has been called
+ * recently (i.e. since the last entry from usermode) so that
* get_paca()->user_time_scaled is up to date.
*/
-void account_process_tick(struct task_struct *tsk, int user_tick)
+void vtime_account_user(struct task_struct *tsk)
{
cputime_t utime, utimescaled;
@@ -375,12 +377,6 @@ void account_process_tick(struct task_struct *tsk, int user_tick)
account_user_time(tsk, utime, utimescaled);
}
-void vtime_task_switch(struct task_struct *prev)
-{
- vtime_account(prev);
- account_process_tick(prev, 0);
-}
-
#else /* ! CONFIG_VIRT_CPU_ACCOUNTING */
#define calc_cputime_factors()
#endif
diff --git a/arch/powerpc/kernel/uprobes.c b/arch/powerpc/kernel/uprobes.c
index d2d46d1014f..bc77834dbf4 100644
--- a/arch/powerpc/kernel/uprobes.c
+++ b/arch/powerpc/kernel/uprobes.c
@@ -64,6 +64,8 @@ int arch_uprobe_pre_xol(struct arch_uprobe *auprobe, struct pt_regs *regs)
autask->saved_trap_nr = current->thread.trap_nr;
current->thread.trap_nr = UPROBE_TRAP_NR;
regs->nip = current->utask->xol_vaddr;
+
+ user_enable_single_step(current);
return 0;
}
@@ -119,6 +121,8 @@ int arch_uprobe_post_xol(struct arch_uprobe *auprobe, struct pt_regs *regs)
* to be executed.
*/
regs->nip = utask->vaddr + MAX_UINSN_BYTES;
+
+ user_disable_single_step(current);
return 0;
}
@@ -162,6 +166,8 @@ void arch_uprobe_abort_xol(struct arch_uprobe *auprobe, struct pt_regs *regs)
current->thread.trap_nr = utask->autask.saved_trap_nr;
instruction_pointer_set(regs, utask->vaddr);
+
+ user_disable_single_step(current);
}
/*
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-01-13 14:40:27 +0000