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keep some processes mapped in always; direct message copying

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where possible (no buffering); no more explicit vm checkranges
in kernel; new allocator for vm using avl tree without needing
remapping
This commit is contained in:
Ben Gras
2009-06-08 04:02:22 +00:00
parent e2a7535c55
commit ac86f5bb49
35 changed files with 1770 additions and 755 deletions
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44
kernel/system.c
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@@ -38,6 +38,7 @@
#include <sys/sigcontext.h>
#include <minix/endpoint.h>
#include <minix/safecopies.h>
#include <minix/portio.h>
#include <minix/u64.h>
#include <sys/vm_i386.h>
@@ -58,9 +59,6 @@ char *callnames[NR_SYS_CALLS];
FORWARD _PROTOTYPE( void initialize, (void));
FORWARD _PROTOTYPE( struct proc *vmrestart_check, (message *));
u32_t cr3_test, cr3_reload, newpde, overwritepde,
linlincopies, physzero, invlpgs, npagefaults, vmreqs, straightpdes;
/*===========================================================================*
* sys_task *
*===========================================================================*/
@@ -90,46 +88,6 @@ PUBLIC void sys_task()
minix_panic("receive() failed", r);
}
#if 1
{
struct proc *stp;
static int prevu;
int u, dt;
u = get_uptime();
dt = u - prevu;
if(dt >= 5*system_hz) {
#define PERSEC(n) ((n)*system_hz/dt)
printf("%6d cr3 tests: %5lu cr3: %5lu straightpdes: %5lu newpde: %5lu overwritepde %5lu linlincopies: %5lu physzero: %5lu invlpgs: %5lu pagefaults: %5lu vmreq: %5lu\n",
u/system_hz,
PERSEC(cr3_test), PERSEC(cr3_reload),
PERSEC(straightpdes), PERSEC(newpde),
PERSEC(overwritepde),
PERSEC(linlincopies), PERSEC(physzero),
PERSEC(invlpgs), PERSEC(npagefaults),
PERSEC(vmreqs));
cr3_reload = 0;
cr3_test = 0;
newpde = overwritepde = linlincopies =
physzero = invlpgs = straightpdes = 0;
npagefaults = 0;
vmreqs = 0;
prevu = u;
#if DEBUG_TRACE
for (stp = BEG_PROC_ADDR; stp < END_PROC_ADDR; stp++) {
int ps = PERSEC(stp->p_schedules);
if(isemptyp(stp))
continue;
if(ps > 10) {
printf("%s %d ", stp->p_name, ps);
stp->p_schedules = 0;
}
}
printf("\n");
#endif
}
}
#endif
sys_call_code = (unsigned) m.m_type;
call_nr = sys_call_code - KERNEL_CALL;
who_e = m.m_source;