KNF.
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mrg
parent
5e55ce6648
commit
4ef57d4d22
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@ -1,4 +1,4 @@
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/* $NetBSD: uvm_meter.c,v 1.3 1998/02/07 11:09:08 mrg Exp $ */
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/* $NetBSD: uvm_meter.c,v 1.4 1998/02/07 12:45:53 mrg Exp $ */
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/*
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* XXXCDC: "ROUGH DRAFT" QUALITY UVM PRE-RELEASE FILE!
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@ -79,179 +79,177 @@ static void uvm_total __P((struct vmtotal *));
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/*
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* uvm_meter: calculate load average and wake up the swapper (if needed)
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*/
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void uvm_meter()
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void
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uvm_meter()
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{
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if ((time.tv_sec % 5) == 0)
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uvm_loadav(&averunnable);
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if (proc0.p_slptime > (maxslp / 2))
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wakeup((caddr_t)&proc0);
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if ((time.tv_sec % 5) == 0)
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uvm_loadav(&averunnable);
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if (proc0.p_slptime > (maxslp / 2))
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wakeup((caddr_t)&proc0);
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}
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/*
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* uvm_loadav: compute a tenex style load average of a quantity on
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* 1, 5, and 15 minute internvals.
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*/
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static void uvm_loadav(avg)
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struct loadavg *avg;
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static void
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uvm_loadav(avg)
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struct loadavg *avg;
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{
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int i, nrun;
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struct proc *p;
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int i, nrun;
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struct proc *p;
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for (nrun = 0, p = allproc.lh_first; p != 0; p = p->p_list.le_next) {
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switch (p->p_stat) {
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case SSLEEP:
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if (p->p_priority > PZERO || p->p_slptime > 1)
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continue;
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/* fall through */
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case SRUN:
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case SIDL:
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nrun++;
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}
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}
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for (i = 0; i < 3; i++)
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avg->ldavg[i] = (cexp[i] * avg->ldavg[i] +
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nrun * FSCALE * (FSCALE - cexp[i])) >> FSHIFT;
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for (nrun = 0, p = allproc.lh_first; p != 0; p = p->p_list.le_next) {
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switch (p->p_stat) {
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case SSLEEP:
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if (p->p_priority > PZERO || p->p_slptime > 1)
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continue;
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/* fall through */
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case SRUN:
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case SIDL:
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nrun++;
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}
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}
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for (i = 0; i < 3; i++)
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avg->ldavg[i] = (cexp[i] * avg->ldavg[i] +
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nrun * FSCALE * (FSCALE - cexp[i])) >> FSHIFT;
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}
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/*
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* uvm_sysctl: sysctl hook into UVM system.
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*/
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int uvm_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
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int *name;
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u_int namelen;
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void *oldp;
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size_t *oldlenp;
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void *newp;
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size_t newlen;
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struct proc *p;
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int
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uvm_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
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int *name;
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u_int namelen;
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void *oldp;
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size_t *oldlenp;
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void *newp;
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size_t newlen;
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struct proc *p;
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{
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struct vmtotal vmtotals;
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struct vmtotal vmtotals;
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/* all sysctl names at this level are terminal */
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if (namelen != 1)
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return (ENOTDIR); /* overloaded */
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/* all sysctl names at this level are terminal */
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if (namelen != 1)
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return (ENOTDIR); /* overloaded */
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switch (name[0]) {
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case VM_LOADAVG:
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return (sysctl_rdstruct(oldp, oldlenp, newp, &averunnable,
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sizeof(averunnable)));
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case VM_METER:
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uvm_total(&vmtotals);
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return (sysctl_rdstruct(oldp, oldlenp, newp, &vmtotals,
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sizeof(vmtotals)));
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case VM_UVMEXP:
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return (sysctl_rdstruct(oldp, oldlenp, newp, &uvmexp, sizeof(uvmexp)));
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switch (name[0]) {
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case VM_LOADAVG:
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return (sysctl_rdstruct(oldp, oldlenp, newp, &averunnable,
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sizeof(averunnable)));
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default:
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return (EOPNOTSUPP);
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}
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/* NOTREACHED */
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case VM_METER:
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uvm_total(&vmtotals);
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return (sysctl_rdstruct(oldp, oldlenp, newp, &vmtotals,
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sizeof(vmtotals)));
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case VM_UVMEXP:
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return (sysctl_rdstruct(oldp, oldlenp, newp, &uvmexp,
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sizeof(uvmexp)));
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default:
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return (EOPNOTSUPP);
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}
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/* NOTREACHED */
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}
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/*
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* uvm_total: calculate the current state of the system.
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*/
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static void uvm_total(totalp)
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struct vmtotal *totalp;
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static void
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uvm_total(totalp)
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struct vmtotal *totalp;
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{
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struct proc *p;
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struct proc *p;
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#if 0
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vm_map_entry_t entry;
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vm_map_t map;
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int paging;
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vm_map_entry_t entry;
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vm_map_t map;
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int paging;
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#endif
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bzero(totalp, sizeof *totalp);
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bzero(totalp, sizeof *totalp);
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/*
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* calculate process statistics
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*/
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/*
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* calculate process statistics
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*/
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for (p = allproc.lh_first; p != 0; p = p->p_list.le_next) {
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if (p->p_flag & P_SYSTEM)
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continue;
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switch (p->p_stat) {
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case 0:
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continue;
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for (p = allproc.lh_first; p != 0; p = p->p_list.le_next) {
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if (p->p_flag & P_SYSTEM)
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continue;
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switch (p->p_stat) {
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case 0:
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continue;
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case SSLEEP:
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case SSTOP:
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if (p->p_flag & P_INMEM) {
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if (p->p_priority <= PZERO)
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totalp->t_dw++;
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else if (p->p_slptime < maxslp)
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totalp->t_sl++;
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} else if (p->p_slptime < maxslp)
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totalp->t_sw++;
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if (p->p_slptime >= maxslp)
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continue;
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break;
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case SSLEEP:
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case SSTOP:
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if (p->p_flag & P_INMEM) {
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if (p->p_priority <= PZERO)
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totalp->t_dw++;
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else if (p->p_slptime < maxslp)
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totalp->t_sl++;
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} else if (p->p_slptime < maxslp)
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totalp->t_sw++;
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if (p->p_slptime >= maxslp)
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continue;
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break;
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case SRUN:
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case SIDL:
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if (p->p_flag & P_INMEM)
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totalp->t_rq++;
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else
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totalp->t_sw++;
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if (p->p_stat == SIDL)
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continue;
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break;
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}
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/*
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* note active objects
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*/
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case SRUN:
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case SIDL:
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if (p->p_flag & P_INMEM)
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totalp->t_rq++;
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else
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totalp->t_sw++;
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if (p->p_stat == SIDL)
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continue;
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break;
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}
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/*
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* note active objects
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*/
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#if 0
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/*
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* XXXCDC: BOGUS! you can't walk a map entry chain without
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* first locking the map. rethink this. in the mean time
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* just don't do it.
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*/
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paging = 0;
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for (map = &p->p_vmspace->vm_map, entry = map->header.next;
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entry != &map->header; entry = entry->next) {
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if (entry->is_a_map || entry->is_sub_map ||
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entry->object.vm_object == NULL)
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continue;
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entry->object.vm_object->flags |= OBJ_ACTIVE;
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paging |= vm_object_paging(entry->object.vm_object);
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}
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if (paging)
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totalp->t_pw++;
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/*
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* XXXCDC: BOGUS! you can't walk a map entry chain without
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* first locking the map. rethink this. in the mean time
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* just don't do it.
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*/
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paging = 0;
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for (map = &p->p_vmspace->vm_map, entry = map->header.next;
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entry != &map->header; entry = entry->next) {
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if (entry->is_a_map || entry->is_sub_map ||
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entry->object.vm_object == NULL)
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continue;
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entry->object.vm_object->flags |= OBJ_ACTIVE;
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paging |= vm_object_paging(entry->object.vm_object);
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}
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if (paging)
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totalp->t_pw++;
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#endif
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}
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/*
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* Calculate object memory usage statistics.
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*/
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}
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/*
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* Calculate object memory usage statistics.
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*/
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#if 0 /* XXXCDC: rethink! rethink! */
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simple_lock(&vm_object_list_lock);
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for (object = vm_object_list.tqh_first;
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object != NULL;
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object = object->object_list.tqe_next) {
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totalp->t_vm += num_pages(object->size);
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totalp->t_rm += object->resident_page_count;
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if (object->flags & OBJ_ACTIVE) {
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totalp->t_avm += num_pages(object->size);
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totalp->t_arm += object->resident_page_count;
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}
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if (object->ref_count > 1) {
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/* shared object */
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totalp->t_vmshr += num_pages(object->size);
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totalp->t_rmshr += object->resident_page_count;
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if (object->flags & OBJ_ACTIVE) {
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totalp->t_avmshr += num_pages(object->size);
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totalp->t_armshr += object->resident_page_count;
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}
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}
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}
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totalp->t_free = cnt.v_free_count;
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simple_lock(&vm_object_list_lock);
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for (object = vm_object_list.tqh_first;
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object != NULL;
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object = object->object_list.tqe_next) {
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totalp->t_vm += num_pages(object->size);
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totalp->t_rm += object->resident_page_count;
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if (object->flags & OBJ_ACTIVE) {
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totalp->t_avm += num_pages(object->size);
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totalp->t_arm += object->resident_page_count;
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}
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if (object->ref_count > 1) {
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/* shared object */
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totalp->t_vmshr += num_pages(object->size);
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totalp->t_rmshr += object->resident_page_count;
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if (object->flags & OBJ_ACTIVE) {
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totalp->t_avmshr += num_pages(object->size);
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totalp->t_armshr += object->resident_page_count;
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}
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}
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}
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totalp->t_free = cnt.v_free_count;
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#endif
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}
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