Merge branch 'for-2.6.23' of master.kernel.org:/pub/scm/linux/kernel/git/arnd/cell-2.6

* 'for-2.6.23' of master.kernel.org:/pub/scm/linux/kernel/git/arnd/cell-2.6: (37 commits)
  [CELL] spufs: rework list management and associated locking
  [CELL] oprofile: add support to OProfile for profiling CELL BE SPUs
  [CELL] oprofile: enable SPU switch notification to detect currently active SPU tasks
  [CELL] spu_base: locking cleanup
  [CELL] cell: indexing of SPUs based on firmware vicinity properties
  [CELL] spufs: integration of SPE affinity with the scheduller
  [CELL] cell: add placement computation for scheduling of affinity contexts
  [CELL] spufs: extension of spu_create to support affinity definition
  [CELL] cell: add hardcoded spu vicinity information for QS20
  [CELL] cell: add vicinity information on spus
  [CELL] cell: add per BE structure with info about its SPUs
  [CELL] spufs: use find_first_bit() instead of sched_find_first_bit()
  [CELL] spufs: remove unused file argument from spufs_run_spu()
  [CELL] spufs: change decrementer restore timing
  [CELL] spufs: dont halt decrementer at restore step 47
  [CELL] spufs: limit saving MFC_CNTL bits
  [CELL] spufs: fix read and write for decr_status file
  [CELL] spufs: fix decr_status meanings
  [CELL] spufs: remove needless context save/restore code
  [CELL] spufs: fix array size of channel index
  ...

8 files changed, 106 insertions, 23 deletions

diff --git a/include/asm-powerpc/oprofile_impl.h b/include/asm-powerpc/oprofile_impl.h
index 8d6b47f7b30..938fefb4c4b 100644
--- a/include/asm-powerpc/oprofile_impl.h
+++ b/include/asm-powerpc/oprofile_impl.h
@@ -39,14 +39,16 @@ struct op_system_config {
 
 /* Per-arch configuration */
 struct op_powerpc_model {
-	void (*reg_setup) (struct op_counter_config *,
+	int (*reg_setup) (struct op_counter_config *,
 			   struct op_system_config *,
 			   int num_counters);
-	void (*cpu_setup) (struct op_counter_config *);
-	void (*start) (struct op_counter_config *);
-        void (*global_start) (struct op_counter_config *);
+	int  (*cpu_setup) (struct op_counter_config *);
+	int  (*start) (struct op_counter_config *);
+	int  (*global_start) (struct op_counter_config *);
 	void (*stop) (void);
 	void (*global_stop) (void);
+	int (*sync_start)(void);
+	int (*sync_stop)(void);
 	void (*handle_interrupt) (struct pt_regs *,
 				  struct op_counter_config *);
 	int num_counters;
diff --git a/include/asm-powerpc/pmi.h b/include/asm-powerpc/pmi.h
index cb0f8aa4308..2259d4ce384 100644
--- a/include/asm-powerpc/pmi.h
+++ b/include/asm-powerpc/pmi.h
@@ -55,13 +55,13 @@ typedef struct {
 struct pmi_handler {
 	struct list_head node;
 	u8 type;
-	void (*handle_pmi_message) (struct of_device *, pmi_message_t);
+	void (*handle_pmi_message) (pmi_message_t);
 };
 
-void pmi_register_handler(struct of_device *, struct pmi_handler *);
-void pmi_unregister_handler(struct of_device *, struct pmi_handler *);
+int pmi_register_handler(struct pmi_handler *);
+void pmi_unregister_handler(struct pmi_handler *);
 
-void pmi_send_message(struct of_device *, pmi_message_t);
+int pmi_send_message(pmi_message_t);
 
 #endif /* __KERNEL__ */
 #endif /* _POWERPC_PMI_H */
diff --git a/include/asm-powerpc/spu.h b/include/asm-powerpc/spu.h
index eedc828cef2..8836c0f1f2f 100644
--- a/include/asm-powerpc/spu.h
+++ b/include/asm-powerpc/spu.h
@@ -107,10 +107,10 @@ struct spu_runqueue;
 struct device_node;
 
 enum spu_utilization_state {
-	SPU_UTIL_SYSTEM,
 	SPU_UTIL_USER,
+	SPU_UTIL_SYSTEM,
 	SPU_UTIL_IOWAIT,
-	SPU_UTIL_IDLE,
+	SPU_UTIL_IDLE_LOADED,
 	SPU_UTIL_MAX
 };
 
@@ -121,9 +121,9 @@ struct spu {
 	unsigned long problem_phys;
 	struct spu_problem __iomem *problem;
 	struct spu_priv2 __iomem *priv2;
-	struct list_head list;
-	struct list_head sched_list;
+	struct list_head cbe_list;
 	struct list_head full_list;
+	enum { SPU_FREE, SPU_USED } alloc_state;
 	int number;
 	unsigned int irqs[3];
 	u32 node;
@@ -137,6 +137,7 @@ struct spu {
 	struct spu_runqueue *rq;
 	unsigned long long timestamp;
 	pid_t pid;
+	pid_t tgid;
 	int class_0_pending;
 	spinlock_t register_lock;
 
@@ -165,11 +166,14 @@ struct spu {
 
 	struct sys_device sysdev;
 
+	int has_mem_affinity;
+	struct list_head aff_list;
+
 	struct {
 		/* protected by interrupt reentrancy */
-		enum spu_utilization_state utilization_state;
-		unsigned long tstamp;		/* time of last ctx switch */
-		unsigned long times[SPU_UTIL_MAX];
+		enum spu_utilization_state util_state;
+		unsigned long long tstamp;
+		unsigned long long times[SPU_UTIL_MAX];
 		unsigned long long vol_ctx_switch;
 		unsigned long long invol_ctx_switch;
 		unsigned long long min_flt;
@@ -181,13 +185,29 @@ struct spu {
 	} stats;
 };
 
-struct spu *spu_alloc(void);
-struct spu *spu_alloc_node(int node);
-void spu_free(struct spu *spu);
+struct cbe_spu_info {
+	struct mutex list_mutex;
+	struct list_head spus;
+	int n_spus;
+	int nr_active;
+	atomic_t reserved_spus;
+};
+
+extern struct cbe_spu_info cbe_spu_info[];
+
+void spu_init_channels(struct spu *spu);
 int spu_irq_class_0_bottom(struct spu *spu);
 int spu_irq_class_1_bottom(struct spu *spu);
 void spu_irq_setaffinity(struct spu *spu, int cpu);
 
+#ifdef CONFIG_KEXEC
+void crash_register_spus(struct list_head *list);
+#else
+static inline void crash_register_spus(struct list_head *list)
+{
+}
+#endif
+
 extern void spu_invalidate_slbs(struct spu *spu);
 extern void spu_associate_mm(struct spu *spu, struct mm_struct *mm);
 
@@ -195,6 +215,20 @@ extern void spu_associate_mm(struct spu *spu, struct mm_struct *mm);
 struct mm_struct;
 extern void spu_flush_all_slbs(struct mm_struct *mm);
 
+/* This interface allows a profiler (e.g., OProfile) to store a ref
+ * to spu context information that it creates.	This caching technique
+ * avoids the need to recreate this information after a save/restore operation.
+ *
+ * Assumes the caller has already incremented the ref count to
+ * profile_info; then spu_context_destroy must call kref_put
+ * on prof_info_kref.
+ */
+void spu_set_profile_private_kref(struct spu_context *ctx,
+				  struct kref *prof_info_kref,
+				  void ( * prof_info_release) (struct kref *kref));
+
+void *spu_get_profile_private_kref(struct spu_context *ctx);
+
 /* system callbacks from the SPU */
 struct spu_syscall_block {
 	u64 nr_ret;
@@ -206,7 +240,8 @@ extern long spu_sys_callback(struct spu_syscall_block *s);
 struct file;
 extern struct spufs_calls {
 	asmlinkage long (*create_thread)(const char __user *name,
-					unsigned int flags, mode_t mode);
+					unsigned int flags, mode_t mode,
+					struct file *neighbor);
 	asmlinkage long (*spu_run)(struct file *filp, __u32 __user *unpc,
 						__u32 __user *ustatus);
 	struct module *owner;
@@ -233,8 +268,10 @@ struct spu_coredump_calls {
 #define SPU_CREATE_GANG			0x0002
 #define SPU_CREATE_NOSCHED		0x0004
 #define SPU_CREATE_ISOLATE		0x0008
+#define SPU_CREATE_AFFINITY_SPU		0x0010
+#define SPU_CREATE_AFFINITY_MEM		0x0020
 
-#define SPU_CREATE_FLAG_ALL		0x000f /* mask of all valid flags */
+#define SPU_CREATE_FLAG_ALL		0x003f /* mask of all valid flags */
 
 
 #ifdef CONFIG_SPU_FS_MODULE
@@ -403,6 +440,7 @@ struct spu_priv2 {
 #define MFC_CNTL_RESUME_DMA_QUEUE		(0ull << 0)
 #define MFC_CNTL_SUSPEND_DMA_QUEUE		(1ull << 0)
 #define MFC_CNTL_SUSPEND_DMA_QUEUE_MASK		(1ull << 0)
+#define MFC_CNTL_SUSPEND_MASK			(1ull << 4)
 #define MFC_CNTL_NORMAL_DMA_QUEUE_OPERATION	(0ull << 8)
 #define MFC_CNTL_SUSPEND_IN_PROGRESS		(1ull << 8)
 #define MFC_CNTL_SUSPEND_COMPLETE		(3ull << 8)
diff --git a/include/asm-powerpc/spu_csa.h b/include/asm-powerpc/spu_csa.h
index c48ae185c87..e87794d5d4e 100644
--- a/include/asm-powerpc/spu_csa.h
+++ b/include/asm-powerpc/spu_csa.h
@@ -50,6 +50,12 @@
 #define SPU_STOPPED_STATUS_P_I  8
 #define SPU_STOPPED_STATUS_R    9
 
+/*
+ * Definitions for software decrementer status flag.
+ */
+#define SPU_DECR_STATUS_RUNNING 0x1
+#define SPU_DECR_STATUS_WRAPPED 0x2
+
 #ifndef  __ASSEMBLY__
 /**
  * spu_reg128 - generic 128-bit register definition.
@@ -63,7 +69,7 @@ struct spu_reg128 {
  * @gprs: Array of saved registers.
  * @fpcr: Saved floating point status control register.
  * @decr: Saved decrementer value.
- * @decr_status: Indicates decrementer run status.
+ * @decr_status: Indicates software decrementer status flags.
  * @ppu_mb: Saved PPU mailbox data.
  * @ppuint_mb: Saved PPU interrupting mailbox data.
  * @tag_mask: Saved tag group mask.
diff --git a/include/linux/dcookies.h b/include/linux/dcookies.h
index 0fe7cdf326f..98c69ab80c8 100644
--- a/include/linux/dcookies.h
+++ b/include/linux/dcookies.h
@@ -12,6 +12,7 @@
 
 #ifdef CONFIG_PROFILING
  
+#include <linux/dcache.h>
 #include <linux/types.h>
  
 struct dcookie_user;
diff --git a/include/linux/elf-em.h b/include/linux/elf-em.h
index 0311bad838b..5834e843a94 100644
--- a/include/linux/elf-em.h
+++ b/include/linux/elf-em.h
@@ -20,7 +20,8 @@
 #define EM_PARISC	15	/* HPPA */
 #define EM_SPARC32PLUS	18	/* Sun's "v8plus" */
 #define EM_PPC		20	/* PowerPC */
-#define EM_PPC64	21       /* PowerPC64 */
+#define EM_PPC64	21	 /* PowerPC64 */
+#define EM_SPU		23	/* Cell BE SPU */
 #define EM_SH		42	/* SuperH */
 #define EM_SPARCV9	43	/* SPARC v9 64-bit */
 #define EM_IA_64	50	/* HP/Intel IA-64 */
diff --git a/include/linux/oprofile.h b/include/linux/oprofile.h
index 0d514b25245..041bb31100f 100644
--- a/include/linux/oprofile.h
+++ b/include/linux/oprofile.h
@@ -17,6 +17,26 @@
 #include <linux/spinlock.h>
 #include <asm/atomic.h>
  
+/* Each escaped entry is prefixed by ESCAPE_CODE
+ * then one of the following codes, then the
+ * relevant data.
+ * These #defines live in this file so that arch-specific
+ * buffer sync'ing code can access them.
+ */
+#define ESCAPE_CODE			~0UL
+#define CTX_SWITCH_CODE			1
+#define CPU_SWITCH_CODE			2
+#define COOKIE_SWITCH_CODE		3
+#define KERNEL_ENTER_SWITCH_CODE	4
+#define KERNEL_EXIT_SWITCH_CODE		5
+#define MODULE_LOADED_CODE		6
+#define CTX_TGID_CODE			7
+#define TRACE_BEGIN_CODE		8
+#define TRACE_END_CODE			9
+#define XEN_ENTER_SWITCH_CODE		10
+#define SPU_PROFILING_CODE		11
+#define SPU_CTX_SWITCH_CODE		12
+
 struct super_block;
 struct dentry;
 struct file_operations;
@@ -35,6 +55,14 @@ struct oprofile_operations {
 	int (*start)(void);
 	/* Stop delivering interrupts. */
 	void (*stop)(void);
+	/* Arch-specific buffer sync functions.
+	 * Return value = 0:  Success
+	 * Return value = -1: Failure
+	 * Return value = 1:  Run generic sync function
+	 */
+	int (*sync_start)(void);
+	int (*sync_stop)(void);
+
 	/* Initiate a stack backtrace. Optional. */
 	void (*backtrace)(struct pt_regs * const regs, unsigned int depth);
 	/* CPU identification string. */
@@ -56,6 +84,13 @@ int oprofile_arch_init(struct oprofile_operations * ops);
 void oprofile_arch_exit(void);
 
 /**
+ * Add data to the event buffer.
+ * The data passed is free-form, but typically consists of
+ * file offsets, dcookies, context information, and ESCAPE codes.
+ */
+void add_event_entry(unsigned long data);
+
+/**
  * Add a sample. This may be called from any context. Pass
  * smp_processor_id() as cpu.
  */
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 7a8b1e3322e..61def7c8fbb 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -549,7 +549,7 @@ asmlinkage long sys_inotify_rm_watch(int fd, u32 wd);
 asmlinkage long sys_spu_run(int fd, __u32 __user *unpc,
 				 __u32 __user *ustatus);
 asmlinkage long sys_spu_create(const char __user *name,
-		unsigned int flags, mode_t mode);
+		unsigned int flags, mode_t mode, int fd);
 
 asmlinkage long sys_mknodat(int dfd, const char __user * filename, int mode,
 			    unsigned dev);