FreeBSD/Linux Kernel Cross Reference
sys/uvm/uvm_stat.c

     /*      $NetBSD: uvm_stat.c,v 1.46 2020/06/14 21:41:42 ad Exp $  */
     
     /*
      * Copyright (c) 1997 Charles D. Cranor and Washington University.
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     * from: Id: uvm_stat.c,v 1.1.2.3 1997/12/19 15:01:00 mrg Exp
     */
    
    /*
     * uvm_stat.c
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: uvm_stat.c,v 1.46 2020/06/14 21:41:42 ad Exp $");
    
    #include "opt_readahead.h"
    #include "opt_ddb.h"
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/cpu.h>
    
    #include <uvm/uvm.h>
    #include <uvm/uvm_ddb.h>
    
    #ifdef DDB
    
    #include <sys/pool.h>
    
    /*
     * uvmexp_print: ddb hook to print interesting uvm counters
     */
    void
    uvmexp_print(void (*pr)(const char *, ...)
        __attribute__((__format__(__printf__,1,2))))
    {
            int64_t anonpg, execpg, filepg;
            int active, inactive;
            int poolpages, freepg;
    
            uvm_estimatepageable(&active, &inactive);
            poolpages = pool_totalpages_locked();
    
            /* this will sync all counters. */
            freepg = uvm_availmem(false);
    
            anonpg = cpu_count_get(CPU_COUNT_ANONCLEAN) +
                cpu_count_get(CPU_COUNT_ANONDIRTY) +
                cpu_count_get(CPU_COUNT_ANONUNKNOWN);
            execpg = cpu_count_get(CPU_COUNT_EXECPAGES);
            filepg = cpu_count_get(CPU_COUNT_FILECLEAN) +
                cpu_count_get(CPU_COUNT_FILEDIRTY) +
                cpu_count_get(CPU_COUNT_FILEUNKNOWN) -
                execpg;
    
            (*pr)("Current UVM status:\n");
            (*pr)("  pagesize=%d (0x%x), pagemask=0x%x, pageshift=%d, ncolors=%d\n",
                uvmexp.pagesize, uvmexp.pagesize, uvmexp.pagemask,
                uvmexp.pageshift, uvmexp.ncolors);
            (*pr)("  %d VM pages: %d active, %d inactive, %d wired, %d free\n",
                uvmexp.npages, active, inactive, uvmexp.wired, freepg);
            (*pr)("  pages  %" PRId64 " anon, %" PRId64 " file, %" PRId64 " exec\n",
                anonpg, filepg, execpg);
            (*pr)("  freemin=%d, free-target=%d, wired-max=%d\n",
                uvmexp.freemin, uvmexp.freetarg, uvmexp.wiredmax);
            (*pr)("  resv-pg=%d, resv-kernel=%d\n",
                uvmexp.reserve_pagedaemon, uvmexp.reserve_kernel);
            (*pr)("  bootpages=%d, poolpages=%d\n",
                uvmexp.bootpages, poolpages);
    
            (*pr)("  faults=%" PRId64 ", traps=%" PRId64 ", "
                  "intrs=%" PRId64 ", ctxswitch=%" PRId64 "\n",
                cpu_count_get(CPU_COUNT_NFAULT),
                cpu_count_get(CPU_COUNT_NTRAP),
                cpu_count_get(CPU_COUNT_NINTR),
                cpu_count_get(CPU_COUNT_NSWTCH));
            (*pr)("   softint=%" PRId64 ", syscalls=%" PRId64 "\n",
                cpu_count_get(CPU_COUNT_NSOFT),
               cpu_count_get(CPU_COUNT_NSYSCALL));
   
           (*pr)("  fault counts:\n");
           (*pr)("    noram=%" PRId64 ", noanon=%" PRId64 ", pgwait=%" PRId64
               ", pgrele=%" PRId64 "\n",
               cpu_count_get(CPU_COUNT_FLTNORAM),
               cpu_count_get(CPU_COUNT_FLTNOANON),
               cpu_count_get(CPU_COUNT_FLTPGWAIT),
               cpu_count_get(CPU_COUNT_FLTPGRELE));
           (*pr)("    ok relocks(total)=%" PRId64 "(%" PRId64 "), "
               "anget(retrys)=%" PRId64 "(%" PRId64 "), amapcopy=%" PRId64 "\n",
               cpu_count_get(CPU_COUNT_FLTRELCKOK),
               cpu_count_get(CPU_COUNT_FLTRELCK),
               cpu_count_get(CPU_COUNT_FLTANGET),
               cpu_count_get(CPU_COUNT_FLTANRETRY),
               cpu_count_get(CPU_COUNT_FLTAMCOPY));
           (*pr)("    neighbor anon/obj pg=%" PRId64 "/%" PRId64
               ", gets(lock/unlock)=%" PRId64 "/%" PRId64 "\n",
               cpu_count_get(CPU_COUNT_FLTNAMAP),
               cpu_count_get(CPU_COUNT_FLTNOMAP),
               cpu_count_get(CPU_COUNT_FLTLGET),
               cpu_count_get(CPU_COUNT_FLTGET));
           (*pr)("    cases: anon=%" PRId64 ", anoncow=%" PRId64 ", obj=%" PRId64
               ", prcopy=%" PRId64 ", przero=%" PRId64 "\n",
               cpu_count_get(CPU_COUNT_FLT_ANON),
               cpu_count_get(CPU_COUNT_FLT_ACOW),
               cpu_count_get(CPU_COUNT_FLT_OBJ),
               cpu_count_get(CPU_COUNT_FLT_PRCOPY),
               cpu_count_get(CPU_COUNT_FLT_PRZERO));
   
           (*pr)("  daemon and swap counts:\n");
           (*pr)("    woke=%d, revs=%d, scans=%d, obscans=%d, anscans=%d\n",
               uvmexp.pdwoke, uvmexp.pdrevs, uvmexp.pdscans, uvmexp.pdobscan,
               uvmexp.pdanscan);
           (*pr)("    busy=%d, freed=%d, reactivate=%d, deactivate=%d\n",
               uvmexp.pdbusy, uvmexp.pdfreed, uvmexp.pdreact, uvmexp.pddeact);
           (*pr)("    pageouts=%d, pending=%d, nswget=%d\n", uvmexp.pdpageouts,
               uvmexp.pdpending, uvmexp.nswget);
           (*pr)("    nswapdev=%d, swpgavail=%d\n",
               uvmexp.nswapdev, uvmexp.swpgavail);
           (*pr)("    swpages=%d, swpginuse=%d, swpgonly=%d, paging=%d\n",
               uvmexp.swpages, uvmexp.swpginuse, uvmexp.swpgonly, uvmexp.paging);
   }
   #endif
   
   #if defined(READAHEAD_STATS)
   
   #define UVM_RA_EVCNT_DEFINE(name) \
   struct evcnt uvm_ra_##name = \
   EVCNT_INITIALIZER(EVCNT_TYPE_MISC, NULL, "readahead", #name); \
   EVCNT_ATTACH_STATIC(uvm_ra_##name);
   
   UVM_RA_EVCNT_DEFINE(total);
   UVM_RA_EVCNT_DEFINE(hit);
   UVM_RA_EVCNT_DEFINE(miss);
   
   #endif /* defined(READAHEAD_STATS) */

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