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[SPARC64]: Provide mmu statistics via sysfs.

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If the system supports hypervisor based statistics, allow them to
be fetched, enabled, and disabled via sysfs.

Enable and disable via the boolean:

/sys/devices/systems/cpu/cpuN/mmustat_enable

Statistic values are provided under:

/sys/devices/systems/cpu/cpuN/mmu_status/

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Miller
2007-06-03 23:38:09 -07:00
committed by David S. Miller
parent 48b6735640
commit d887ab3a9b
3 changed files with 227 additions and 15 deletions
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5
include/asm-sparc64/hypervisor.h
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@@ -2798,6 +2798,11 @@ struct hv_mmu_statistics {
*/
#define HV_FAST_MMUSTAT_INFO 0x103
#ifndef __ASSEMBLY__
extern unsigned long sun4v_mmustat_conf(unsigned long ra, unsigned long *orig_ra);
extern unsigned long sun4v_mmustat_info(unsigned long *ra);
#endif
/* NCS crypto services */
/* ncs_request() sub-function numbers */