Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

[mv-sheeva.git] / arch / sparc / kernel / pcr.c

diff --git a/arch/sparc/kernel/pcr.c b/arch/sparc/kernel/pcr.c
index c4f24703b1652e03a5e7765badaca43330552db4..1ae8cdd7e70324fab9ee621993f2761a502a221b 100644 (file)
--- a/arch/sparc/kernel/pcr.c
+++ b/arch/sparc/kernel/pcr.c
@@ -9,12 +9,22 @@
 
 #include <asm/pil.h>
 #include <asm/pcr.h>
+#include <asm/nmi.h>
 
 /* This code is shared between various users of the performance
  * counters.  Users will be oprofile, pseudo-NMI watchdog, and the
  * perf_counter support layer.
  */
 
+#define PCR_SUN4U_ENABLE       (PCR_PIC_PRIV | PCR_STRACE | PCR_UTRACE)
+#define PCR_N2_ENABLE          (PCR_PIC_PRIV | PCR_STRACE | PCR_UTRACE | \
+                                PCR_N2_TOE_OV1 | \
+                                (2 << PCR_N2_SL1_SHIFT) | \
+                                (0xff << PCR_N2_MASK1_SHIFT))
+
+u64 pcr_enable;
+unsigned int picl_shift;
+
 /* Performance counter interrupts run unmasked at PIL level 15.
  * Therefore we can't do things like wakeups and other work
  * that expects IRQ disabling to be adhered to in locking etc.
@@ -117,20 +127,28 @@ int __init pcr_arch_init(void)
        switch (tlb_type) {
        case hypervisor:
                pcr_ops = &n2_pcr_ops;
+               pcr_enable = PCR_N2_ENABLE;
+               picl_shift = 2;
                break;
 
-       case spitfire:
        case cheetah:
        case cheetah_plus:
                pcr_ops = &direct_pcr_ops;
+               pcr_enable = PCR_SUN4U_ENABLE;
                break;
 
+       case spitfire:
+               /* UltraSPARC-I/II and derivatives lack a profile
+                * counter overflow interrupt so we can't make use of
+                * their hardware currently.
+                */
+               /* fallthrough */
        default:
                err = -ENODEV;
                goto out_unregister;
        }
 
-       return 0;
+       return nmi_init();
 
 out_unregister:
        unregister_perf_hsvc();