Commit a9e1e53b authored by Linus Torvalds's avatar Linus Torvalds

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc

Pull sparc fixes from David Miller:

1) Build fix for LEON, from Sam Ravnborg.

2) Make the sparc side changes that go along with the infrastructure to
   retry faults when blocking on a disk transfer.  From Kautuk Consul.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc32,leon: fix leon build
  sparc/mm/fault_32.c: Port OOM changes to do_sparc_fault
  sparc/mm/fault_64.c: Port OOM changes to do_sparc64_fault
parents 53cb4307 d657784b
...@@ -45,7 +45,6 @@ void leon_pci_init(struct platform_device *ofdev, struct leon_pci_info *info) ...@@ -45,7 +45,6 @@ void leon_pci_init(struct platform_device *ofdev, struct leon_pci_info *info)
void __devinit pcibios_fixup_bus(struct pci_bus *pbus) void __devinit pcibios_fixup_bus(struct pci_bus *pbus)
{ {
struct leon_pci_info *info = pbus->sysdata;
struct pci_dev *dev; struct pci_dev *dev;
int i, has_io, has_mem; int i, has_io, has_mem;
u16 cmd; u16 cmd;
...@@ -111,18 +110,6 @@ int pcibios_enable_device(struct pci_dev *dev, int mask) ...@@ -111,18 +110,6 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
return pci_enable_resources(dev, mask); return pci_enable_resources(dev, mask);
} }
struct device_node *pci_device_to_OF_node(struct pci_dev *pdev)
{
/*
* Currently the OpenBoot nodes are not connected with the PCI device,
* this is because the LEON PROM does not create PCI nodes. Eventually
* this will change and the same approach as pcic.c can be used to
* match PROM nodes with pci devices.
*/
return NULL;
}
EXPORT_SYMBOL(pci_device_to_OF_node);
void __devinit pcibios_update_irq(struct pci_dev *dev, int irq) void __devinit pcibios_update_irq(struct pci_dev *dev, int irq)
{ {
#ifdef CONFIG_PCI_DEBUG #ifdef CONFIG_PCI_DEBUG
......
...@@ -225,6 +225,8 @@ asmlinkage void do_sparc_fault(struct pt_regs *regs, int text_fault, int write, ...@@ -225,6 +225,8 @@ asmlinkage void do_sparc_fault(struct pt_regs *regs, int text_fault, int write,
unsigned long g2; unsigned long g2;
int from_user = !(regs->psr & PSR_PS); int from_user = !(regs->psr & PSR_PS);
int fault, code; int fault, code;
unsigned int flags = (FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE |
(write ? FAULT_FLAG_WRITE : 0));
if(text_fault) if(text_fault)
address = regs->pc; address = regs->pc;
...@@ -251,6 +253,7 @@ asmlinkage void do_sparc_fault(struct pt_regs *regs, int text_fault, int write, ...@@ -251,6 +253,7 @@ asmlinkage void do_sparc_fault(struct pt_regs *regs, int text_fault, int write,
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address); perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address);
retry:
down_read(&mm->mmap_sem); down_read(&mm->mmap_sem);
/* /*
...@@ -289,7 +292,11 @@ asmlinkage void do_sparc_fault(struct pt_regs *regs, int text_fault, int write, ...@@ -289,7 +292,11 @@ asmlinkage void do_sparc_fault(struct pt_regs *regs, int text_fault, int write,
* make sure we exit gracefully rather than endlessly redo * make sure we exit gracefully rather than endlessly redo
* the fault. * the fault.
*/ */
fault = handle_mm_fault(mm, vma, address, write ? FAULT_FLAG_WRITE : 0); fault = handle_mm_fault(mm, vma, address, flags);
if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
return;
if (unlikely(fault & VM_FAULT_ERROR)) { if (unlikely(fault & VM_FAULT_ERROR)) {
if (fault & VM_FAULT_OOM) if (fault & VM_FAULT_OOM)
goto out_of_memory; goto out_of_memory;
...@@ -297,13 +304,29 @@ asmlinkage void do_sparc_fault(struct pt_regs *regs, int text_fault, int write, ...@@ -297,13 +304,29 @@ asmlinkage void do_sparc_fault(struct pt_regs *regs, int text_fault, int write,
goto do_sigbus; goto do_sigbus;
BUG(); BUG();
} }
if (fault & VM_FAULT_MAJOR) {
current->maj_flt++; if (flags & FAULT_FLAG_ALLOW_RETRY) {
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, regs, address); if (fault & VM_FAULT_MAJOR) {
} else { current->maj_flt++;
current->min_flt++; perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ,
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, regs, address); 1, regs, address);
} else {
current->min_flt++;
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN,
1, regs, address);
}
if (fault & VM_FAULT_RETRY) {
flags &= ~FAULT_FLAG_ALLOW_RETRY;
/* No need to up_read(&mm->mmap_sem) as we would
* have already released it in __lock_page_or_retry
* in mm/filemap.c.
*/
goto retry;
}
} }
up_read(&mm->mmap_sem); up_read(&mm->mmap_sem);
return; return;
......
...@@ -279,6 +279,7 @@ asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs) ...@@ -279,6 +279,7 @@ asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs)
unsigned int insn = 0; unsigned int insn = 0;
int si_code, fault_code, fault; int si_code, fault_code, fault;
unsigned long address, mm_rss; unsigned long address, mm_rss;
unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
fault_code = get_thread_fault_code(); fault_code = get_thread_fault_code();
...@@ -333,6 +334,8 @@ asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs) ...@@ -333,6 +334,8 @@ asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs)
insn = get_fault_insn(regs, insn); insn = get_fault_insn(regs, insn);
goto handle_kernel_fault; goto handle_kernel_fault;
} }
retry:
down_read(&mm->mmap_sem); down_read(&mm->mmap_sem);
} }
...@@ -423,7 +426,12 @@ asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs) ...@@ -423,7 +426,12 @@ asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs)
goto bad_area; goto bad_area;
} }
fault = handle_mm_fault(mm, vma, address, (fault_code & FAULT_CODE_WRITE) ? FAULT_FLAG_WRITE : 0); flags |= ((fault_code & FAULT_CODE_WRITE) ? FAULT_FLAG_WRITE : 0);
fault = handle_mm_fault(mm, vma, address, flags);
if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
return;
if (unlikely(fault & VM_FAULT_ERROR)) { if (unlikely(fault & VM_FAULT_ERROR)) {
if (fault & VM_FAULT_OOM) if (fault & VM_FAULT_OOM)
goto out_of_memory; goto out_of_memory;
...@@ -431,12 +439,27 @@ asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs) ...@@ -431,12 +439,27 @@ asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs)
goto do_sigbus; goto do_sigbus;
BUG(); BUG();
} }
if (fault & VM_FAULT_MAJOR) {
current->maj_flt++; if (flags & FAULT_FLAG_ALLOW_RETRY) {
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, regs, address); if (fault & VM_FAULT_MAJOR) {
} else { current->maj_flt++;
current->min_flt++; perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ,
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, regs, address); 1, regs, address);
} else {
current->min_flt++;
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN,
1, regs, address);
}
if (fault & VM_FAULT_RETRY) {
flags &= ~FAULT_FLAG_ALLOW_RETRY;
/* No need to up_read(&mm->mmap_sem) as we would
* have already released it in __lock_page_or_retry
* in mm/filemap.c.
*/
goto retry;
}
} }
up_read(&mm->mmap_sem); up_read(&mm->mmap_sem);
......
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