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Add statistic gathering for various tsb operations.

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Submitted by:	tmm
This commit is contained in:
Jake Burkholder 2002-02-23 20:11:11 +00:00
parent d250bf3668
commit 7cc66bde35
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=91167
1 changed files with 34 additions and 0 deletions
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34
sys/sparc64/sparc64/tsb.c
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@ -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));