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-rw-r--r--arch/x86/oprofile/nmi_int.c16
-rw-r--r--drivers/oprofile/event_buffer.c3
2 files changed, 16 insertions, 3 deletions
diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c
index b28d2f1253bb..1ba67dc8006a 100644
--- a/arch/x86/oprofile/nmi_int.c
+++ b/arch/x86/oprofile/nmi_int.c
@@ -634,6 +634,18 @@ static int __init ppro_init(char **cpu_type)
if (force_arch_perfmon && cpu_has_arch_perfmon)
return 0;
+ /*
+ * Documentation on identifying Intel processors by CPU family
+ * and model can be found in the Intel Software Developer's
+ * Manuals (SDM):
+ *
+ * http://www.intel.com/products/processor/manuals/
+ *
+ * As of May 2010 the documentation for this was in the:
+ * "Intel 64 and IA-32 Architectures Software Developer's
+ * Manual Volume 3B: System Programming Guide", "Table B-1
+ * CPUID Signature Values of DisplayFamily_DisplayModel".
+ */
switch (cpu_model) {
case 0 ... 2:
*cpu_type = "i386/ppro";
@@ -655,12 +667,12 @@ static int __init ppro_init(char **cpu_type)
case 15: case 23:
*cpu_type = "i386/core_2";
break;
+ case 0x1a:
case 0x2e:
- case 26:
spec = &op_arch_perfmon_spec;
*cpu_type = "i386/core_i7";
break;
- case 28:
+ case 0x1c:
*cpu_type = "i386/atom";
break;
default:
diff --git a/drivers/oprofile/event_buffer.c b/drivers/oprofile/event_buffer.c
index 5df60a6b6776..dd87e86048be 100644
--- a/drivers/oprofile/event_buffer.c
+++ b/drivers/oprofile/event_buffer.c
@@ -135,7 +135,7 @@ static int event_buffer_open(struct inode *inode, struct file *file)
* echo 1 >/dev/oprofile/enable
*/
- return 0;
+ return nonseekable_open(inode, file);
fail:
dcookie_unregister(file->private_data);
@@ -205,4 +205,5 @@ const struct file_operations event_buffer_fops = {
.open = event_buffer_open,
.release = event_buffer_release,
.read = event_buffer_read,
+ .llseek = no_llseek,
};