diff options
| author | David S. Miller <davem@davemloft.net> | 2009-01-29 21:22:47 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-01-30 00:03:53 -0800 |
| commit | e5553a6d04421eec326a629571d696e8e745a0e4 (patch) | |
| tree | b6fe49a18135dbe27a464fb78828b2150c679689 /arch/sparc/include/asm/pcr.h | |
| parent | c3cf5e8cc56d272f828a66610bb78bbb727b2ce1 (diff) | |
sparc64: Implement NMI watchdog on capable cpus.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/include/asm/pcr.h')
| -rw-r--r-- | arch/sparc/include/asm/pcr.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/pcr.h b/arch/sparc/include/asm/pcr.h index 4249bb523ef..a2f5c61f924 100644 --- a/arch/sparc/include/asm/pcr.h +++ b/arch/sparc/include/asm/pcr.h @@ -27,4 +27,20 @@ extern void schedule_deferred_pcr_work(void); #define PCR_N2_SL1_SHIFT 27 #define PCR_N2_OV1 0x80000000 +extern unsigned int picl_shift; + +/* In order to commonize as much of the implementation as + * possible, we use PICH as our counter. Mostly this is + * to accomodate Niagara-1 which can only count insn cycles + * in PICH. + */ +static inline u64 picl_value(unsigned int nmi_hz) +{ + u32 delta = local_cpu_data().clock_tick / (nmi_hz << picl_shift); + + return ((u64)((0 - delta) & 0xffffffff)) << 32; +} + +extern u64 pcr_enable; + #endif /* __PCR_H */ |