From d3b136308178f2a1a743f50077098db5010e1e34 Mon Sep 17 00:00:00 2001 From: Miod Vallat Date: Sun, 3 Apr 2005 10:36:13 +0000 Subject: Simple performance improvements: - inline empty pmap_deactivate() and pmap_collect(). - inline pmap_phys_address(). - provide a real pmap_kremove() implementation, rather than invoking pmap_remove() on behalf of pmap_kernel(). - do not check for the MMU hole in pmap_prefer() for SUN4M-only kernels. --- sys/arch/sparc/include/pmap.h | 23 +++----- sys/arch/sparc/sparc/pmap.c | 126 ++++++++++++++---------------------------- 2 files changed, 50 insertions(+), 99 deletions(-) (limited to 'sys/arch') diff --git a/sys/arch/sparc/include/pmap.h b/sys/arch/sparc/include/pmap.h index 0fbd8b76ef8..85e1c3ba643 100644 --- a/sys/arch/sparc/include/pmap.h +++ b/sys/arch/sparc/include/pmap.h @@ -1,4 +1,4 @@ -/* $OpenBSD: pmap.h,v 1.37 2004/05/20 09:20:41 kettenis Exp $ */ +/* $OpenBSD: pmap.h,v 1.38 2005/04/03 10:36:10 miod Exp $ */ /* $NetBSD: pmap.h,v 1.30 1997/08/04 20:00:47 pk Exp $ */ /* @@ -269,21 +269,18 @@ int pmap_dumpmmu(int (*)(dev_t, daddr_t, caddr_t, size_t), daddr_t); struct proc; void pmap_activate(struct proc *); -void pmap_deactivate(struct proc *); void pmap_bootstrap(int nmmu, int nctx, int nregion); int pmap_count_ptes(struct pmap *); void pmap_prefer(vaddr_t, vaddr_t *); int pmap_pa_exists(paddr_t); void *pmap_bootstrap_alloc(int); void pmap_unwire(pmap_t, vaddr_t); -void pmap_collect(pmap_t); void pmap_copy(pmap_t, pmap_t, vaddr_t, vsize_t, vaddr_t); pmap_t pmap_create(void); void pmap_destroy(pmap_t); void pmap_init(void); +void pmap_kremove(vaddr_t, vsize_t); vaddr_t pmap_map(vaddr_t, paddr_t, paddr_t, int); -vaddr_t pmap_phys_address(int); -void pmap_pinit(pmap_t); void pmap_reference(pmap_t); void pmap_release(pmap_t); void pmap_remove(pmap_t, vaddr_t, vaddr_t); @@ -300,10 +297,12 @@ void switchexit(struct proc *); int mmu_pagein(struct pmap *pm, vaddr_t, int); void pmap_writetext(unsigned char *, int); -#define pmap_update(pm) /* nothing */ -#define pmap_copy(DP,SP,D,L,S) /* nothing */ - -#define pmap_proc_iflush(p,va,len) /* nothing */ +#define pmap_collect(pm) do { /* nothing */ } while (0) +#define pmap_copy(DP,SP,D,L,S) do { /* nothing */ } while (0) +#define pmap_deactivate(p) do { /* nothing */ } while (0) +#define pmap_phys_address(frame) (frame) +#define pmap_proc_iflush(p,va,len) do { /* nothing */ } while (0) +#define pmap_update(pm) do { /* nothing */ } while (0) /* SUN4/SUN4C SPECIFIC DECLARATIONS */ @@ -315,7 +314,6 @@ boolean_t pmap_extract4_4c(pmap_t, vaddr_t, paddr_t *); boolean_t pmap_is_modified4_4c(struct vm_page *); boolean_t pmap_is_referenced4_4c(struct vm_page *); void pmap_kenter_pa4_4c(vaddr_t, paddr_t, vm_prot_t); -void pmap_kremove4_4c(vaddr_t, vsize_t); void pmap_page_protect4_4c(struct vm_page *, vm_prot_t); void pmap_protect4_4c(pmap_t, vaddr_t, vaddr_t, vm_prot_t); void pmap_copy_page4_4c(struct vm_page *, struct vm_page *); @@ -333,7 +331,6 @@ boolean_t pmap_extract4m(pmap_t, vaddr_t, paddr_t *); boolean_t pmap_is_modified4m(struct vm_page *); boolean_t pmap_is_referenced4m(struct vm_page *); void pmap_kenter_pa4m(vaddr_t, paddr_t, vm_prot_t); -void pmap_kremove4m(vaddr_t, vsize_t); void pmap_page_protect4m(struct vm_page *, vm_prot_t); void pmap_protect4m(pmap_t, vaddr_t, vaddr_t, vm_prot_t); void pmap_copy_page4m(struct vm_page *, struct vm_page *); @@ -351,7 +348,6 @@ void pmap_changeprot4m(pmap_t, vaddr_t, vm_prot_t, int); #define pmap_is_modified pmap_is_modified4_4c #define pmap_is_referenced pmap_is_referenced4_4c #define pmap_kenter_pa pmap_kenter_pa4_4c -#define pmap_kremove pmap_kremove4_4c #define pmap_page_protect pmap_page_protect4_4c #define pmap_protect pmap_protect4_4c #define pmap_zero_page pmap_zero_page4_4c @@ -367,7 +363,6 @@ void pmap_changeprot4m(pmap_t, vaddr_t, vm_prot_t, int); #define pmap_is_modified pmap_is_modified4m #define pmap_is_referenced pmap_is_referenced4m #define pmap_kenter_pa pmap_kenter_pa4m -#define pmap_kremove pmap_kremove4m #define pmap_page_protect pmap_page_protect4m #define pmap_protect pmap_protect4m #define pmap_zero_page pmap_zero_page4m @@ -383,7 +378,6 @@ extern boolean_t (*pmap_extract_p)(pmap_t, vaddr_t, paddr_t *); extern boolean_t (*pmap_is_modified_p)(struct vm_page *); extern boolean_t (*pmap_is_referenced_p)(struct vm_page *); extern void (*pmap_kenter_pa_p)(vaddr_t, paddr_t, vm_prot_t); -extern void (*pmap_kremove_p)(vaddr_t, vsize_t); extern void (*pmap_page_protect_p)(struct vm_page *, vm_prot_t); extern void (*pmap_protect_p)(pmap_t, vaddr_t, vaddr_t, @@ -401,7 +395,6 @@ extern void (*pmap_changeprot_p)(pmap_t, vaddr_t, #define pmap_is_modified (*pmap_is_modified_p) #define pmap_is_referenced (*pmap_is_referenced_p) #define pmap_kenter_pa (*pmap_kenter_pa_p) -#define pmap_kremove (*pmap_kremove_p) #define pmap_page_protect (*pmap_page_protect_p) #define pmap_protect (*pmap_protect_p) #define pmap_zero_page (*pmap_zero_page_p) diff --git a/sys/arch/sparc/sparc/pmap.c b/sys/arch/sparc/sparc/pmap.c index 21b895a69ec..89f10c414a9 100644 --- a/sys/arch/sparc/sparc/pmap.c +++ b/sys/arch/sparc/sparc/pmap.c @@ -1,4 +1,4 @@ -/* $OpenBSD: pmap.c,v 1.141 2005/03/29 11:33:18 miod Exp $ */ +/* $OpenBSD: pmap.c,v 1.142 2005/04/03 10:36:12 miod Exp $ */ /* $NetBSD: pmap.c,v 1.118 1998/05/19 19:00:18 thorpej Exp $ */ /* @@ -379,7 +379,9 @@ static void pmap_page_upload(paddr_t); void pmap_pinit(pmap_t); void pmap_release(pmap_t); +#if defined(SUN4) || defined(SUN4C) int mmu_has_hole; +#endif vaddr_t prom_vstart; /* For /dev/kmem */ vaddr_t prom_vend; @@ -509,7 +511,6 @@ boolean_t (*pmap_extract_p)(pmap_t, vaddr_t, paddr_t *); boolean_t (*pmap_is_modified_p)(struct vm_page *); boolean_t (*pmap_is_referenced_p)(struct vm_page *); void (*pmap_kenter_pa_p)(vaddr_t, paddr_t, vm_prot_t); -void (*pmap_kremove_p)(vaddr_t, vsize_t); void (*pmap_page_protect_p)(struct vm_page *, vm_prot_t); void (*pmap_protect_p)(pmap_t, vaddr_t, vaddr_t, vm_prot_t); void (*pmap_copy_page_p)(struct vm_page *, struct vm_page *); @@ -865,13 +866,6 @@ mmu_reservemon4_4c(nrp, nsp) #endif struct regmap *rp; -#if defined(SUN4M) - if (CPU_ISSUN4M) { - panic("mmu_reservemon4_4c called on Sun4M machine"); - return; - } -#endif - #if defined(SUN4) if (CPU_ISSUN4) { prom_vstart = va = OLDMON_STARTVADDR; @@ -2680,7 +2674,6 @@ pmap_bootstrap4_4c(nctx, nregion, nsegment) pmap_is_modified_p = pmap_is_modified4_4c; pmap_is_referenced_p = pmap_is_referenced4_4c; pmap_kenter_pa_p = pmap_kenter_pa4_4c; - pmap_kremove_p = pmap_kremove4_4c; pmap_page_protect_p = pmap_page_protect4_4c; pmap_protect_p = pmap_protect4_4c; pmap_zero_page_p = pmap_zero_page4_4c; @@ -2993,7 +2986,6 @@ pmap_bootstrap4m(void) pmap_is_modified_p = pmap_is_modified4m; pmap_is_referenced_p = pmap_is_referenced4m; pmap_kenter_pa_p = pmap_kenter_pa4m; - pmap_kremove_p = pmap_kremove4m; pmap_page_protect_p = pmap_page_protect4m; pmap_protect_p = pmap_protect4m; pmap_zero_page_p = pmap_zero_page4m; @@ -3436,6 +3428,8 @@ struct pmap * pmap_create() { struct pmap *pm; + int size; + void *urp; pm = (struct pmap *)malloc(sizeof *pm, M_VMPMAP, M_WAITOK); #ifdef DEBUG @@ -3443,25 +3437,6 @@ pmap_create() printf("pmap_create: created %p\n", pm); #endif bzero((caddr_t)pm, sizeof *pm); - pmap_pinit(pm); - return (pm); -} - -/* - * Initialize a preallocated and zeroed pmap structure, - * such as one in a vmspace structure. - */ -void -pmap_pinit(pm) - struct pmap *pm; -{ - int size; - void *urp; - -#ifdef DEBUG - if (pmapdebug & PDB_CREATE) - printf("pmap_pinit(%p)\n", pm); -#endif size = NUREG * sizeof(struct regmap); @@ -3515,7 +3490,7 @@ pmap_pinit(pm) pm->pm_gap_end = VA_VREG(VM_MAXUSER_ADDRESS); - return; + return (pm); } /* @@ -3687,6 +3662,40 @@ pmap_remove(pm, va, endva) setcontext(ctx); } +void +pmap_kremove(va, len) + vaddr_t va; + vsize_t len; +{ + struct pmap *pm = pmap_kernel(); + vaddr_t nva, endva = va + len; + int vr, vs, s, ctx; + +#ifdef DEBUG + if (pmapdebug & PDB_REMOVE) + printf("pmap_kremove(0x%lx, 0x%lx)\n", va, len); +#endif + + ctx = getcontext(); + s = splvm(); /* XXX conservative */ + simple_lock(pm->pm_lock); + + for (; va < endva; va = nva) { + /* do one virtual segment at a time */ + vr = VA_VREG(va); + vs = VA_VSEG(va); + nva = VSTOVA(vr, vs + 1); + if (nva == 0 || nva > endva) + nva = endva; + if (pm->pm_regmap[vr].rg_nsegmap != 0) + pmap_rmk(pm, va, nva, vr, vs); + } + + simple_unlock(pm->pm_lock); + splx(s); + setcontext(ctx); +} + /* * The following magic number was chosen because: * 1. It is the same amount of work to cache_flush_page 4 pages @@ -5229,14 +5238,6 @@ pmap_kenter_pa4_4c(va, pa, prot) setcontext4(ctx); } -void -pmap_kremove4_4c(va, len) - vaddr_t va; - vsize_t len; -{ - pmap_remove(pmap_kernel(), va, va + len); -} - #endif /*sun4,4c*/ #if defined(SUN4M) /* Sun4M versions of enter routines */ @@ -5563,14 +5564,6 @@ pmap_kenter_pa4m(va, pa, prot) setcontext4m(ctx); } -void -pmap_kremove4m(va, len) - vaddr_t va; - vsize_t len; -{ - pmap_remove(pmap_kernel(), va, va + len); -} - #endif /* sun4m */ /* @@ -5728,21 +5721,6 @@ pmap_extract4m(pm, va, pa) } #endif /* sun4m */ -/* - * Garbage collects the physical map system for - * pages which are no longer used. - * Success need not be guaranteed -- that is, there - * may well be pages which are not referenced, but - * others may be collected. - * Called by the pageout daemon when pages are scarce. - */ -/* ARGSUSED */ -void -pmap_collect(pm) - struct pmap *pm; -{ -} - #if defined(SUN4) || defined(SUN4C) /* @@ -6043,19 +6021,6 @@ pmap_copy_page4m(struct vm_page *srcpg, struct vm_page *dstpg) } #endif /* Sun4M */ -/* - * Turn a cdevsw d_mmap value into a byte address for pmap_enter. - * XXX this should almost certainly be done differently, and - * elsewhere, or even not at all - */ -paddr_t -pmap_phys_address(x) - int x; -{ - - return (x); -} - /* * Turn on/off cache for a given (va, number of pages). * @@ -6171,8 +6136,10 @@ pmap_prefer(foff, vap) vaddr_t va = *vap; long d, m; +#if defined(SUN4) || defined(SUN4C) if (VA_INHOLE(va)) va = MMU_HOLE_END; +#endif m = CACHE_ALIAS_DIST; if (m == 0) /* m=0 => no cache aliasing */ @@ -6232,15 +6199,6 @@ pmap_activate(p) splx(s); } -/* - * Deactivate the address space of the specified process. - */ -void -pmap_deactivate(p) - struct proc *p; -{ -} - #ifdef DEBUG /* * Check consistency of a pmap (time consuming!). -- cgit v1.2.3