diff options
| -rw-r--r-- | sys/sparc64/sparc64/tsb.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/sys/sparc64/sparc64/tsb.c b/sys/sparc64/sparc64/tsb.c index 73656438aace..88cef4f26e9c 100644 --- a/sys/sparc64/sparc64/tsb.c +++ b/sys/sparc64/sparc64/tsb.c @@ -30,6 +30,7 @@ */ #include "opt_ddb.h" +#include "opt_pmap.h" #include <sys/param.h> #include <sys/queue.h> @@ -38,6 +39,7 @@ #include <sys/lock.h> #include <sys/mutex.h> #include <sys/proc.h> +#include <sys/sysctl.h> #include <sys/systm.h> #include <vm/vm.h> @@ -64,6 +66,33 @@ CTASSERT((1 << TTE_SHIFT) == sizeof(struct tte)); +#ifdef PMAP_STATS +static long tsb_nrepl; +static long tsb_nlookup_k; +static long tsb_nlookup_u; +static long tsb_nenter_k; +static long tsb_nenter_u; +static long tsb_nforeach; + +SYSCTL_DECL(_debug_pmap_stats); +SYSCTL_LONG(_debug_pmap_stats, OID_AUTO, tsb_nrepl, CTLFLAG_RD, &tsb_nrepl, 0, + "Number of TSB replacements"); +SYSCTL_LONG(_debug_pmap_stats, OID_AUTO, tsb_nlookup_k, CTLFLAG_RD, + &tsb_nlookup_k, 0, "Number of calls to tsb_tte_lookup(), kernel pmap"); +SYSCTL_LONG(_debug_pmap_stats, OID_AUTO, tsb_nlookup_u, CTLFLAG_RD, + &tsb_nlookup_u, 0, "Number of calls to tsb_tte_lookup(), user pmap"); +SYSCTL_LONG(_debug_pmap_stats, OID_AUTO, tsb_nenter_k, CTLFLAG_RD, + &tsb_nenter_k, 0, "Number of calls to tsb_tte_enter()"); +SYSCTL_LONG(_debug_pmap_stats, OID_AUTO, tsb_nenter_u, CTLFLAG_RD, + &tsb_nenter_u, 0, "Number of calls to tsb_tte_enter()"); +SYSCTL_LONG(_debug_pmap_stats, OID_AUTO, tsb_nforeach, CTLFLAG_RD, + &tsb_nforeach, 0, "Number of calls to tsb_foreach()"); + +#define TSB_STATS_INC(var) atomic_add_long(&var, 1) +#else +#define TSB_STATS_INC(var) +#endif + struct tte *tsb_kernel; vm_offset_t tsb_kernel_phys; @@ -75,6 +104,7 @@ tsb_tte_lookup(pmap_t pm, vm_offset_t va) u_int i; if (pm == kernel_pmap) { + TSB_STATS_INC(tsb_nlookup_k); tp = tsb_kvtotte(va); CTR3(KTR_TSB, "tsb_tte_lookup: kernel va=%#lx tp=%#lx data=%#lx", @@ -84,6 +114,7 @@ tsb_tte_lookup(pmap_t pm, vm_offset_t va) return (tp); } } else { + TSB_STATS_INC(tsb_nlookup_u); va = trunc_page(va); bucket = tsb_vtobucket(pm, va); CTR3(KTR_TSB, "tsb_tte_lookup: ctx=%#lx va=%#lx bucket=%p", @@ -115,11 +146,13 @@ tsb_tte_enter(pmap_t pm, vm_page_t m, vm_offset_t va, struct tte tte) int i; if (pm == kernel_pmap) { + TSB_STATS_INC(tsb_nenter_k); tp = tsb_kvtotte(va); *tp = tte; return (tp); } + TSB_STATS_INC(tsb_nenter_u); bucket = tsb_vtobucket(pm, va); CTR4(KTR_TSB, "tsb_tte_enter: ctx=%#lx va=%#lx data=%#lx bucket=%p", pm->pm_context, va, tte.tte_data, bucket); @@ -144,6 +177,7 @@ tsb_tte_enter(pmap_t pm, vm_page_t m, vm_offset_t va, struct tte tte) if (tp == NULL) tp = rtp; if ((tp->tte_data & TD_V) != 0) { + TSB_STATS_INC(tsb_nrepl); ova = tte_get_va(*tp); if ((tp->tte_data & TD_PV) != 0) { om = PHYS_TO_VM_PAGE(TD_GET_PA(tp->tte_data)); |