x86/oprofile/nmi_int: add Nehalem to list of ppro cores

..otherwise oprofile will fall back on that poor timer interrupt.

Also replace the unreadable chain of if-statements with a "switch()"
statement instead. It generates better code, and is a lot clearer.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 25 insertions, 11 deletions

diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c
index 7f3329b55d2..3f90289410e 100644
--- a/arch/x86/oprofile/nmi_int.c
+++ b/arch/x86/oprofile/nmi_int.c
@@ -369,20 +369,34 @@ static int __init ppro_init(char **cpu_type)
 {
         __u8 cpu_model = boot_cpu_data.x86_model;
 
-        if (cpu_model == 14)
+        switch (cpu_model) {
+        case 0 ... 2:
+                *cpu_type = "i386/ppro";
+                break;
+        case 3 ... 5:
+                *cpu_type = "i386/pii";
+                break;
+        case 6 ... 8:
+                *cpu_type = "i386/piii";
+                break;
+        case 9:
+                *cpu_type = "i386/p6_mobile";
+                break;
+        case 10 ... 13:
+                *cpu_type = "i386/p6";
+                break;
+        case 14:
                 *cpu_type = "i386/core";
-        else if (cpu_model == 15 || cpu_model == 23)
+                break;
+        case 15: case 23:
+                *cpu_type = "i386/core_2";
+                break;
+        case 26:
                 *cpu_type = "i386/core_2";
-        else if (cpu_model > 0xd)
+                break;
+        default:
+                /* Unknown */
                 return 0;
-        else if (cpu_model == 9) {
-                *cpu_type = "i386/p6_mobile";
-        } else if (cpu_model > 5) {
-                *cpu_type = "i386/piii";
-        } else if (cpu_model > 2) {
-                *cpu_type = "i386/pii";
-        } else {
-                *cpu_type = "i386/ppro";
         }
 
         model = &op_ppro_spec;