diff options
Diffstat (limited to 'arch/sparc/kernel/pcr.c')
| -rw-r--r-- | arch/sparc/kernel/pcr.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/arch/sparc/kernel/pcr.c b/arch/sparc/kernel/pcr.c index 8ac23e66008..a24072a4927 100644 --- a/arch/sparc/kernel/pcr.c +++ b/arch/sparc/kernel/pcr.c @@ -3,7 +3,7 @@ * Copyright (C) 2009 David S. Miller (davem@davemloft.net) */ #include <linux/kernel.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/init.h> #include <linux/irq.h> @@ -13,6 +13,7 @@ #include <asm/pil.h> #include <asm/pcr.h> #include <asm/nmi.h> +#include <asm/spitfire.h> /* This code is shared between various users of the performance * counters. Users will be oprofile, pseudo-NMI watchdog, and the @@ -80,8 +81,11 @@ static void n2_pcr_write(u64 val) { unsigned long ret; - ret = sun4v_niagara2_setperf(HV_N2_PERF_SPARC_CTL, val); - if (ret != HV_EOK) + if (val & PCR_N2_HTRACE) { + ret = sun4v_niagara2_setperf(HV_N2_PERF_SPARC_CTL, val); + if (ret != HV_EOK) + write_pcr(val); + } else write_pcr(val); } @@ -106,6 +110,10 @@ static int __init register_perf_hsvc(void) perf_hsvc_group = HV_GRP_N2_CPU; break; + case SUN4V_CHIP_NIAGARA3: + perf_hsvc_group = HV_GRP_KT_CPU; + break; + default: return -ENODEV; } |