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authorRobert Richter <robert.richter@amd.com>2009-05-25 13:10:32 (GMT)
committerRobert Richter <robert.richter@amd.com>2009-06-11 17:42:14 (GMT)
commit3370d358569755625aba4d9a846a040ce691d9ed (patch)
tree97b712208843a33dd29d1bfd9f90bc8aec30a595 /arch/x86/oprofile/nmi_int.c
parentef8828ddf828174785421af67c281144d4b8e796 (diff)
downloadlinux-fsl-qoriq-3370d358569755625aba4d9a846a040ce691d9ed.tar.xz
x86/oprofile: replace macros to calculate control register
This patch introduces op_x86_get_ctrl() to calculate the value of the performance control register. This is generic code usable for all models. The event and reserved masks are model specific and stored in struct op_x86_model_spec. 64 bit MSR functions are used now. The patch removes many hard to read macros used for ctrl calculation. The function op_x86_get_ctrl() is common code and the first step to further merge performance counter implementations for x86 models. Signed-off-by: Robert Richter <robert.richter@amd.com>
Diffstat (limited to 'arch/x86/oprofile/nmi_int.c')
-rw-r--r--arch/x86/oprofile/nmi_int.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c
index c31f87b..388ee15 100644
--- a/arch/x86/oprofile/nmi_int.c
+++ b/arch/x86/oprofile/nmi_int.c
@@ -31,6 +31,26 @@ static DEFINE_PER_CPU(unsigned long, saved_lvtpc);
/* 0 == registered but off, 1 == registered and on */
static int nmi_enabled = 0;
+/* common functions */
+
+u64 op_x86_get_ctrl(struct op_x86_model_spec const *model,
+ struct op_counter_config *counter_config)
+{
+ u64 val = 0;
+ u16 event = (u16)counter_config->event;
+
+ val |= ARCH_PERFMON_EVENTSEL_INT;
+ val |= counter_config->user ? ARCH_PERFMON_EVENTSEL_USR : 0;
+ val |= counter_config->kernel ? ARCH_PERFMON_EVENTSEL_OS : 0;
+ val |= (counter_config->unit_mask & 0xFF) << 8;
+ event &= model->event_mask ? model->event_mask : 0xFF;
+ val |= event & 0xFF;
+ val |= (event & 0x0F00) << 24;
+
+ return val;
+}
+
+
static int profile_exceptions_notify(struct notifier_block *self,
unsigned long val, void *data)
{