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Add statistic gathering for various pmap operations.

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Submitted by:	tmm
This commit is contained in:
Jake Burkholder 2002-02-23 20:06:19 +00:00
parent ca0d9d125e
commit b07078429e
1 changed files with 38 additions and 3 deletions
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41
sys/sparc64/sparc64/pmap.c
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@ -64,6 +64,7 @@
*/
#include "opt_msgbuf.h"
#include "opt_pmap.h"
#include <sys/param.h>
#include <sys/kernel.h>
@ -72,6 +73,7 @@
#include <sys/msgbuf.h>
#include <sys/mutex.h>
#include <sys/proc.h>
#include <sys/sysctl.h>
#include <sys/systm.h>
#include <sys/vmmeter.h>
@ -198,8 +200,35 @@ static vm_offset_t pmap_bootstrap_alloc(vm_size_t size);
#define PMAP_TSB_THRESH ((TSB_SIZE / 2) * PAGE_SIZE)
/* Callbacks for tsb_foreach. */
tsb_callback_t pmap_remove_tte;
tsb_callback_t pmap_protect_tte;
static tsb_callback_t pmap_remove_tte;
static tsb_callback_t pmap_protect_tte;
#ifdef PMAP_STATS
static long pmap_enter_nupdate;
static long pmap_enter_nreplace;
static long pmap_enter_nnew;
static long pmap_ncache_enter;
static long pmap_ncache_enter_nc;
static long pmap_niflush;
SYSCTL_NODE(_debug, OID_AUTO, pmap_stats, CTLFLAG_RD, 0, "Statistics");
SYSCTL_LONG(_debug_pmap_stats, OID_AUTO, pmap_enter_nupdate, CTLFLAG_RD,
&pmap_enter_nupdate, 0, "Number of pmap_enter() updates");
SYSCTL_LONG(_debug_pmap_stats, OID_AUTO, pmap_enter_nreplace, CTLFLAG_RD,
&pmap_enter_nreplace, 0, "Number of pmap_enter() replacements");
SYSCTL_LONG(_debug_pmap_stats, OID_AUTO, pmap_enter_nnew, CTLFLAG_RD,
&pmap_enter_nnew, 0, "Number of pmap_enter() additions");
SYSCTL_LONG(_debug_pmap_stats, OID_AUTO, pmap_ncache_enter, CTLFLAG_RD,
&pmap_ncache_enter, 0, "Number of pmap_cache_enter() calls");
SYSCTL_LONG(_debug_pmap_stats, OID_AUTO, pmap_ncache_enter_nc, CTLFLAG_RD,
&pmap_ncache_enter_nc, 0, "Number of pmap_cache_enter() nc");
SYSCTL_LONG(_debug_pmap_stats, OID_AUTO, pmap_niflush, CTLFLAG_RD,
&pmap_niflush, 0, "Number of pmap I$ flushes");
#define PMAP_STATS_INC(var) atomic_add_long(&var, 1)
#else
#define PMAP_STATS_INC(var)
#endif
/*
* Quick sort callout for comparing memory regions.
@ -553,6 +582,7 @@ pmap_cache_enter(vm_page_t m, vm_offset_t va)
int i;
CTR2(KTR_PMAP, "pmap_cache_enter: m=%p va=%#lx", m, va);
PMAP_STATS_INC(pmap_ncache_enter);
for (i = 0, c = 0; i < DCACHE_COLORS; i++) {
if (i != DCACHE_COLOR(va))
c += m->md.colors[i];
@ -562,7 +592,8 @@ pmap_cache_enter(vm_page_t m, vm_offset_t va)
CTR0(KTR_PMAP, "pmap_cache_enter: cacheable");
return (1);
}
else if (c != 1) {
PMAP_STATS_INC(pmap_ncache_enter_nc);
if (c != 1) {
CTR0(KTR_PMAP, "pmap_cache_enter: already uncacheable");
return (0);
}
@ -1312,6 +1343,7 @@ pmap_enter(pmap_t pm, vm_offset_t va, vm_page_t m, vm_prot_t prot,
if (TD_GET_PA(otte.tte_data) == pa) {
CTR0(KTR_PMAP, "pmap_enter: update");
PMAP_STATS_INC(pmap_enter_nupdate);
/*
* Wiring change, just update stats.
@ -1349,6 +1381,7 @@ pmap_enter(pmap_t pm, vm_offset_t va, vm_page_t m, vm_prot_t prot,
}
} else {
CTR0(KTR_PMAP, "pmap_enter: replace");
PMAP_STATS_INC(pmap_enter_nreplace);
/*
* Mapping has changed, invalidate old range.
@ -1380,6 +1413,7 @@ pmap_enter(pmap_t pm, vm_offset_t va, vm_page_t m, vm_prot_t prot,
}
} else {
CTR0(KTR_PMAP, "pmap_enter: new");
PMAP_STATS_INC(pmap_enter_nnew);
/*
* Enter on the pv list if part of our managed memory.
@ -1414,6 +1448,7 @@ pmap_enter(pmap_t pm, vm_offset_t va, vm_page_t m, vm_prot_t prot,
tte.tte_data |= TD_SW;
if (prot & VM_PROT_EXECUTE) {
tte.tte_data |= TD_EXEC;
PMAP_STATS_INC(pmap_niflush);
icache_inval_phys(pa, pa + PAGE_SIZE - 1);
}