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authorBob Nelson <rrnelson@linux.vnet.ibm.com>2007-07-20 21:39:53 +0200
committerArnd Bergmann <arnd@klappe.arndb.de>2007-07-20 21:42:24 +0200
commit1474855d0878cced6f39f51f3c2bd7428b44cb1e (patch)
treecbad42404bfc0f7222d0a88e4ed9b0e9e0d0cb50 /include/linux
parent36aaccc1e96481e8310b1d13600096da0f24ff43 (diff)
[CELL] oprofile: add support to OProfile for profiling CELL BE SPUs
From: Maynard Johnson <mpjohn@us.ibm.com> This patch updates the existing arch/powerpc/oprofile/op_model_cell.c to add in the SPU profiling capabilities. In addition, a 'cell' subdirectory was added to arch/powerpc/oprofile to hold Cell-specific SPU profiling code. Exports spu_set_profile_private_kref and spu_get_profile_private_kref which are used by OProfile to store private profile information in spufs data structures. Also incorporated several fixes from other patches (rrn). Check pointer returned from kzalloc. Eliminated unnecessary cast. Better error handling and cleanup in the related area. 64-bit unsigned long parameter was being demoted to 32-bit unsigned int and eventually promoted back to unsigned long. Signed-off-by: Carl Love <carll@us.ibm.com> Signed-off-by: Maynard Johnson <mpjohn@us.ibm.com> Signed-off-by: Bob Nelson <rrnelson@us.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Acked-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/dcookies.h1
-rw-r--r--include/linux/elf-em.h3
-rw-r--r--include/linux/oprofile.h35
3 files changed, 38 insertions, 1 deletions
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.
*/