OProfile: enable IBS for AMD CPUs
Signed-off-by: Robert Richter <robert.richter@amd.com>
Cc: oprofile-list <oprofile-list@lists.sourceforge.net>
Cc: Barry Kasindorf <barry.kasindorf@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c
index b298193..287513a 100644
--- a/arch/x86/oprofile/nmi_int.c
+++ b/arch/x86/oprofile/nmi_int.c
@@ -468,6 +468,14 @@
return -ENODEV;
}
+ /* default values, can be overwritten by model */
+ ops->create_files = nmi_create_files;
+ ops->setup = nmi_setup;
+ ops->shutdown = nmi_shutdown;
+ ops->start = nmi_start;
+ ops->stop = nmi_stop;
+ ops->cpu_type = cpu_type;
+
if (model->init)
ret = model->init(ops);
if (ret)
@@ -475,12 +483,6 @@
init_sysfs();
using_nmi = 1;
- ops->create_files = nmi_create_files;
- ops->setup = nmi_setup;
- ops->shutdown = nmi_shutdown;
- ops->start = nmi_start;
- ops->stop = nmi_stop;
- ops->cpu_type = cpu_type;
printk(KERN_INFO "oprofile: using NMI interrupt.\n");
return 0;
}
diff --git a/arch/x86/oprofile/op_model_athlon.c b/arch/x86/oprofile/op_model_athlon.c
index 2650b12..0d83903 100644
--- a/arch/x86/oprofile/op_model_athlon.c
+++ b/arch/x86/oprofile/op_model_athlon.c
@@ -446,13 +446,25 @@
on_each_cpu(apic_clear_ibs_nmi_per_cpu, NULL, 1);
}
+static int (*create_arch_files)(struct super_block * sb, struct dentry * root);
+
static int setup_ibs_files(struct super_block * sb, struct dentry * root)
{
char buf[12];
struct dentry *dir;
+ int ret = 0;
+
+ /* architecture specific files */
+ if (create_arch_files)
+ ret = create_arch_files(sb, root);
+
+ if (ret)
+ return ret;
if (!ibs_allowed)
- return 0;
+ return ret;
+
+ /* model specific files */
/* setup some reasonable defaults */
ibs_config.max_cnt_fetch = 250000;
@@ -482,11 +494,15 @@
static int op_amd_init(struct oprofile_operations *ops)
{
+ setup_ibs();
+ create_arch_files = ops->create_files;
+ ops->create_files = setup_ibs_files;
return 0;
}
static void op_amd_exit(void)
{
+ clear_ibs_nmi();
}
struct op_x86_model_spec const op_amd_spec = {