These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

5 files changed, 12 insertions, 26 deletions

diff --git a/kernel/arch/tile/mm/elf.c b/kernel/arch/tile/mm/elf.c
index f7ddae372..6225cc998 100644
--- a/kernel/arch/tile/mm/elf.c
+++ b/kernel/arch/tile/mm/elf.c
@@ -56,7 +56,7 @@ static int notify_exec(struct mm_struct *mm)
 	if (exe_file == NULL)
 		goto done_free;
 
-	path = d_path(&exe_file->f_path, buf, PAGE_SIZE);
+	path = file_path(exe_file, buf, PAGE_SIZE);
 	if (IS_ERR(path))
 		goto done_put;
 
diff --git a/kernel/arch/tile/mm/fault.c b/kernel/arch/tile/mm/fault.c
index 3f4f58d34..13eac59bf 100644
--- a/kernel/arch/tile/mm/fault.c
+++ b/kernel/arch/tile/mm/fault.c
@@ -699,11 +699,10 @@ struct intvec_state do_page_fault_ics(struct pt_regs *regs, int fault_num,
  * interrupt away appropriately and return immediately.  We can't do
  * page faults for user code while in kernel mode.
  */
-void do_page_fault(struct pt_regs *regs, int fault_num,
-		   unsigned long address, unsigned long write)
+static inline void __do_page_fault(struct pt_regs *regs, int fault_num,
+				   unsigned long address, unsigned long write)
 {
 	int is_page_fault;
-	enum ctx_state prev_state = exception_enter();
 
 #ifdef CONFIG_KPROBES
 	/*
@@ -713,7 +712,7 @@ void do_page_fault(struct pt_regs *regs, int fault_num,
 	 */
 	if (notify_die(DIE_PAGE_FAULT, "page fault", regs, -1,
 		       regs->faultnum, SIGSEGV) == NOTIFY_STOP)
-		goto done;
+		return;
 #endif
 
 #ifdef __tilegx__
@@ -835,18 +834,22 @@ void do_page_fault(struct pt_regs *regs, int fault_num,
 			async->is_fault = is_page_fault;
 			async->is_write = write;
 			async->address = address;
-			goto done;
+			return;
 		}
 	}
 #endif
 
 	handle_page_fault(regs, fault_num, is_page_fault, address, write);
+}
 
-done:
+void do_page_fault(struct pt_regs *regs, int fault_num,
+		   unsigned long address, unsigned long write)
+{
+	enum ctx_state prev_state = exception_enter();
+	__do_page_fault(regs, fault_num, address, write);
 	exception_exit(prev_state);
 }
 
-
 #if CHIP_HAS_TILE_DMA()
 /*
  * This routine effectively re-issues asynchronous page faults
diff --git a/kernel/arch/tile/mm/highmem.c b/kernel/arch/tile/mm/highmem.c
index fcd545014..eca28551b 100644
--- a/kernel/arch/tile/mm/highmem.c
+++ b/kernel/arch/tile/mm/highmem.c
@@ -275,15 +275,3 @@ void *kmap_atomic_prot_pfn(unsigned long pfn, pgprot_t prot)
 {
 	return kmap_atomic_prot(pfn_to_page(pfn), prot);
 }
-
-struct page *kmap_atomic_to_page(void *ptr)
-{
-	pte_t *pte;
-	unsigned long vaddr = (unsigned long)ptr;
-
-	if (vaddr < FIXADDR_START)
-		return virt_to_page(ptr);
-
-	pte = kmap_get_pte(vaddr);
-	return pte_page(*pte);
-}
diff --git a/kernel/arch/tile/mm/hugetlbpage.c b/kernel/arch/tile/mm/hugetlbpage.c
index 8416240c3..c034dc3fe 100644
--- a/kernel/arch/tile/mm/hugetlbpage.c
+++ b/kernel/arch/tile/mm/hugetlbpage.c
@@ -160,11 +160,6 @@ int pud_huge(pud_t pud)
 	return !!(pud_val(pud) & _PAGE_HUGE_PAGE);
 }
 
-int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep)
-{
-	return 0;
-}
-
 #ifdef HAVE_ARCH_HUGETLB_UNMAPPED_AREA
 static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *file,
 		unsigned long addr, unsigned long len,
diff --git a/kernel/arch/tile/mm/init.c b/kernel/arch/tile/mm/init.c
index 5bd252e3f..d4e1fc41d 100644
--- a/kernel/arch/tile/mm/init.c
+++ b/kernel/arch/tile/mm/init.c
@@ -863,7 +863,7 @@ void __init mem_init(void)
  * memory to the highmem for now.
  */
 #ifndef CONFIG_NEED_MULTIPLE_NODES
-int arch_add_memory(u64 start, u64 size)
+int arch_add_memory(u64 start, u64 size, bool for_device)
 {
 	struct pglist_data *pgdata = &contig_page_data;
 	struct zone *zone = pgdata->node_zones + MAX_NR_ZONES-1;