---

yaml
---
r: 136955
b: refs/heads/master
c: fbf59bc
h: refs/heads/master
i:
  136953: ca3e7d8
  136951: 450ff34
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 8fc48985006da4ceba24508db64ec77fc0dfe3bb
+refs/heads/master: fbf59bc9d74d1fb30b8e0630743aff2806eafcea

trunk/include/linux/percpu.h

@@ -76,23 +76,37 @@
 
 #ifdef CONFIG_SMP
 
-struct percpu_data {
-	void *ptrs[1];
-};
+#ifdef CONFIG_HAVE_DYNAMIC_PER_CPU_AREA
 
-#define __percpu_disguise(pdata) (struct percpu_data *)~(unsigned long)(pdata)
+extern void *pcpu_base_addr;
 
+typedef void (*pcpu_populate_pte_fn_t)(unsigned long addr);
+
+extern size_t __init pcpu_setup_static(pcpu_populate_pte_fn_t populate_pte_fn,
+				       struct page **pages, size_t cpu_size);
 /*
  * Use this to get to a cpu's version of the per-cpu object
  * dynamically allocated. Non-atomic access to the current CPU's
  * version should probably be combined with get_cpu()/put_cpu().
  */
+#define per_cpu_ptr(ptr, cpu)	SHIFT_PERCPU_PTR((ptr), per_cpu_offset((cpu)))
+
+#else /* CONFIG_HAVE_DYNAMIC_PER_CPU_AREA */
+
+struct percpu_data {
+	void *ptrs[1];
+};
+
+#define __percpu_disguise(pdata) (struct percpu_data *)~(unsigned long)(pdata)
+
 #define per_cpu_ptr(ptr, cpu)						\
 ({									\
         struct percpu_data *__p = __percpu_disguise(ptr);		\
         (__typeof__(ptr))__p->ptrs[(cpu)];				\
 })
 
+#endif /* CONFIG_HAVE_DYNAMIC_PER_CPU_AREA */
+
 extern void *__alloc_percpu(size_t size, size_t align);
 extern void free_percpu(void *__pdata);
 

trunk/kernel/module.c

@@ -51,6 +51,7 @@
 #include <linux/tracepoint.h>
 #include <linux/ftrace.h>
 #include <linux/async.h>
+#include <linux/percpu.h>
 
 #if 0
 #define DEBUGP printk
@@ -366,6 +367,34 @@ static struct module *find_module(const char *name)
 }
 
 #ifdef CONFIG_SMP
+
+#ifdef CONFIG_HAVE_DYNAMIC_PER_CPU_AREA
+
+static void *percpu_modalloc(unsigned long size, unsigned long align,
+			     const char *name)
+{
+	void *ptr;
+
+	if (align > PAGE_SIZE) {
+		printk(KERN_WARNING "%s: per-cpu alignment %li > %li\n",
+		       name, align, PAGE_SIZE);
+		align = PAGE_SIZE;
+	}
+
+	ptr = __alloc_percpu(size, align);
+	if (!ptr)
+		printk(KERN_WARNING
+		       "Could not allocate %lu bytes percpu data\n", size);
+	return ptr;
+}
+
+static void percpu_modfree(void *freeme)
+{
+	free_percpu(freeme);
+}
+
+#else /* ... !CONFIG_HAVE_DYNAMIC_PER_CPU_AREA */
+
 /* Number of blocks used and allocated. */
 static unsigned int pcpu_num_used, pcpu_num_allocated;
 /* Size of each block.  -ve means used. */
@@ -499,6 +528,8 @@ static int percpu_modinit(void)
 }
 __initcall(percpu_modinit);
 
+#endif /* CONFIG_HAVE_DYNAMIC_PER_CPU_AREA */
+
 static unsigned int find_pcpusec(Elf_Ehdr *hdr,
 				 Elf_Shdr *sechdrs,
 				 const char *secstrings)

trunk/mm/Makefile

@@ -30,6 +30,10 @@ obj-$(CONFIG_FAILSLAB) += failslab.o
 obj-$(CONFIG_MEMORY_HOTPLUG) += memory_hotplug.o
 obj-$(CONFIG_FS_XIP) += filemap_xip.o
 obj-$(CONFIG_MIGRATION) += migrate.o
+ifdef CONFIG_HAVE_DYNAMIC_PER_CPU_AREA
+obj-$(CONFIG_SMP) += percpu.o
+else
 obj-$(CONFIG_SMP) += allocpercpu.o
+endif
 obj-$(CONFIG_QUICKLIST) += quicklist.o
 obj-$(CONFIG_CGROUP_MEM_RES_CTLR) += memcontrol.o page_cgroup.o