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-rw-r--r--arch/i386/kernel/cpu/perfctr-watchdog.c35
1 files changed, 33 insertions, 2 deletions
diff --git a/arch/i386/kernel/cpu/perfctr-watchdog.c b/arch/i386/kernel/cpu/perfctr-watchdog.c
index f0b67630b90..4d26d514c56 100644
--- a/arch/i386/kernel/cpu/perfctr-watchdog.c
+++ b/arch/i386/kernel/cpu/perfctr-watchdog.c
@@ -55,14 +55,45 @@ static DEFINE_PER_CPU(struct nmi_watchdog_ctlblk, nmi_watchdog_ctlblk);
/* converts an msr to an appropriate reservation bit */
static inline unsigned int nmi_perfctr_msr_to_bit(unsigned int msr)
{
- return wd_ops ? msr - wd_ops->perfctr : 0;
+ /* returns the bit offset of the performance counter register */
+ switch (boot_cpu_data.x86_vendor) {
+ case X86_VENDOR_AMD:
+ return (msr - MSR_K7_PERFCTR0);
+ case X86_VENDOR_INTEL:
+ if (cpu_has(&boot_cpu_data, X86_FEATURE_ARCH_PERFMON))
+ return (msr - MSR_ARCH_PERFMON_PERFCTR0);
+
+ switch (boot_cpu_data.x86) {
+ case 6:
+ return (msr - MSR_P6_PERFCTR0);
+ case 15:
+ return (msr - MSR_P4_BPU_PERFCTR0);
+ }
+ }
+ return 0;
}
/* converts an msr to an appropriate reservation bit */
/* returns the bit offset of the event selection register */
static inline unsigned int nmi_evntsel_msr_to_bit(unsigned int msr)
{
- return wd_ops ? msr - wd_ops->evntsel : 0;
+ /* returns the bit offset of the event selection register */
+ switch (boot_cpu_data.x86_vendor) {
+ case X86_VENDOR_AMD:
+ return (msr - MSR_K7_EVNTSEL0);
+ case X86_VENDOR_INTEL:
+ if (cpu_has(&boot_cpu_data, X86_FEATURE_ARCH_PERFMON))
+ return (msr - MSR_ARCH_PERFMON_EVENTSEL0);
+
+ switch (boot_cpu_data.x86) {
+ case 6:
+ return (msr - MSR_P6_EVNTSEL0);
+ case 15:
+ return (msr - MSR_P4_BSU_ESCR0);
+ }
+ }
+ return 0;
+
}
/* checks for a bit availability (hack for oprofile) */