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minix/servers/is/dmp_kernel.c
Ben Gras 7967177710 endpoint-aware conversion of servers. 
'who', indicating caller number in pm and fs and some other servers, has
been removed in favour of 'who_e' (endpoint) and 'who_p' (proc nr.).

In both PM and FS, isokendpt() convert endpoints to process slot
numbers, returning OK if it was a valid and consistent endpoint number.
okendpt() does the same but panic()s if it doesn't succeed. (In PM,
this is pm_isok..)

pm and fs keep their own records of process endpoints in their proc tables,
which are needed to make kernel calls about those processes.

message field names have changed.

fs drivers are endpoints.

fs now doesn't try to get out of driver deadlock, as the protocol isn't
supposed to let that happen any more. (A warning is printed if ELOCKED
is detected though.)

fproc[].fp_task (indicating which driver the process is suspended on)
became an int.

PM and FS now get endpoint numbers of initial boot processes from the
kernel. These happen to be the same as the old proc numbers, to let
user processes reach them with the old numbers, but FS and PM don't know
that. All new processes after INIT, even after the generation number
wraps around, get endpoint numbers with generation 1 and higher, so
the first instances of the boot processes are the only processes ever
to have endpoint numbers in the old proc number range.

More return code checks of sys_* functions have been added.

IS has become endpoint-aware. Ditched the 'text' and 'data' fields
in the kernel dump (which show locations, not sizes, so aren't terribly
useful) in favour of the endpoint number. Proc number is still visible.

Some other dumps (e.g. dmap, rs) show endpoint numbers now too which got
the formatting changed.

PM reading segments using rw_seg() has changed - it uses other fields
in the message now instead of encoding the segment and process number and
fd in the fd field. For that it uses _read_pm() and _write_pm() which to
_taskcall()s directly in pm/misc.c.

PM now sys_exit()s itself on panic(), instead of sys_abort().

RS also talks in endpoints instead of process numbers.
2006-03-03 10:20:58 +00:00

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/* Debugging dump procedures for the kernel. */
#include "inc.h"
#include <timers.h>
#include <ibm/interrupt.h>
#include <minix/endpoint.h>
#include "../../kernel/const.h"
#include "../../kernel/config.h"
#include "../../kernel/debug.h"
#include "../../kernel/type.h"
#include "../../kernel/proc.h"
#include "../../kernel/ipc.h"
#define click_to_round_k(n) \
((unsigned) ((((unsigned long) (n) << CLICK_SHIFT) + 512) / 1024))
/* Declare some local dump procedures. */
FORWARD _PROTOTYPE( char *proc_name, (int proc_nr) );
FORWARD _PROTOTYPE( char *s_traps_str, (int flags) );
FORWARD _PROTOTYPE( char *s_flags_str, (int flags) );
FORWARD _PROTOTYPE( char *p_rts_flags_str, (int flags) );
/* Some global data that is shared among several dumping procedures.
* Note that the process table copy has the same name as in the kernel
* so that most macros and definitions from proc.h also apply here.
*/
PUBLIC struct proc proc[NR_TASKS + NR_PROCS];
PUBLIC struct priv priv[NR_SYS_PROCS];
PUBLIC struct boot_image image[NR_BOOT_PROCS];
/*===========================================================================*
* timing_dmp *
*===========================================================================*/
PUBLIC void timing_dmp()
{
#if ! DEBUG_TIME_LOCKS
printf("Enable the DEBUG_TIME_LOCKS definition in src/kernel/config.h\n");
#else
static struct lock_timingdata timingdata[TIMING_CATEGORIES];
int r, c, f, skipped = 0, printed = 0, maxlines = 23, x = 0;
static int offsetlines = 0;
if ((r = sys_getlocktimings(&timingdata[0])) != OK) {
report("IS","warning: couldn't get copy of lock timings", r);
return;
}
for(c = 0; c < TIMING_CATEGORIES; c++) {
int b;
if (!timingdata[c].lock_timings_range[0] || !timingdata[c].binsize)
continue;
x = printf("%-*s: misses %lu, resets %lu, measurements %lu: ",
TIMING_NAME, timingdata[c].names,
timingdata[c].misses,
timingdata[c].resets,
timingdata[c].measurements);
for(b = 0; b < TIMING_POINTS; b++) {
int w;
if (!timingdata[c].lock_timings[b])
continue;
x += (w = printf(" %5d: %5d", timingdata[c].lock_timings_range[0] +
b*timingdata[c].binsize,
timingdata[c].lock_timings[b]));
if (x + w >= 80) { printf("\n"); x = 0; }
}
if (x > 0) printf("\n");
}
#endif
}
/*===========================================================================*
* kmessages_dmp *
*===========================================================================*/
PUBLIC void kmessages_dmp()
{
struct kmessages kmess; /* get copy of kernel messages */
char print_buf[KMESS_BUF_SIZE+1]; /* this one is used to print */
int start; /* calculate start of messages */
int r;
/* Try to get a copy of the kernel messages. */
if ((r = sys_getkmessages(&kmess)) != OK) {
report("IS","warning: couldn't get copy of kmessages", r);
return;
}
/* Try to print the kernel messages. First determine start and copy the
* buffer into a print-buffer. This is done because the messages in the
* copy may wrap (the kernel buffer is circular).
*/
start = ((kmess.km_next + KMESS_BUF_SIZE) - kmess.km_size) % KMESS_BUF_SIZE;
r = 0;
while (kmess.km_size > 0) {
print_buf[r] = kmess.km_buf[(start+r) % KMESS_BUF_SIZE];
r ++;
kmess.km_size --;
}
print_buf[r] = 0; /* make sure it terminates */
printf("Dump of all messages generated by the kernel.\n\n");
printf("%s", print_buf); /* print the messages */
}
/*===========================================================================*
* monparams_dmp *
*===========================================================================*/
PUBLIC void monparams_dmp()
{
char val[1024];
char *e;
int r;
/* Try to get a copy of the boot monitor parameters. */
if ((r = sys_getmonparams(val, sizeof(val))) != OK) {
report("IS","warning: couldn't get copy of monitor params", r);
return;
}
/* Append new lines to the result. */
e = val;
do {
e += strlen(e);
*e++ = '\n';
} while (*e != 0);
/* Finally, print the result. */
printf("Dump of kernel environment strings set by boot monitor.\n");
printf("\n%s\n", val);
}
/*===========================================================================*
* irqtab_dmp *
*===========================================================================*/
PUBLIC void irqtab_dmp()
{
int i,r;
struct irq_hook irq_hooks[NR_IRQ_HOOKS];
int irq_actids[NR_IRQ_VECTORS];
struct irq_hook *e; /* irq tab entry */
char *irq[] = {
"clock", /* 00 */
"keyboard", /* 01 */
"cascade", /* 02 */
"rs232", /* 03 */
"rs232", /* 04 */
"NIC(eth)", /* 05 */
"floppy", /* 06 */
"printer", /* 07 */
"", /* 08 */
"", /* 09 */
"", /* 10 */
"", /* 11 */
"", /* 12 */
"", /* 13 */
"at_wini_0", /* 14 */
"at_wini_1", /* 15 */
};
if ((r = sys_getirqhooks(irq_hooks)) != OK) {
report("IS","warning: couldn't get copy of irq hooks", r);
return;
}
if ((r = sys_getirqactids(irq_actids)) != OK) {
report("IS","warning: couldn't get copy of irq mask", r);
return;
}
#if 0
printf("irq_actids:");
for (i= 0; i<NR_IRQ_VECTORS; i++)
printf(" [%d] = 0x%08x", i, irq_actids[i]);
printf("\n");
#endif
printf("IRQ policies dump shows use of kernel's IRQ hooks.\n");
printf("-h.id- -proc.nr- -IRQ vector (nr.)- -policy- -notify id-\n");
for (i=0; i<NR_IRQ_HOOKS; i++) {
e = &irq_hooks[i];
printf("%3d", i);
if (e->proc_nr_e==NONE) {
printf(" <unused>\n");
continue;
}
printf("%10d ", e->proc_nr_e);
printf(" %9.9s (%02d) ", irq[e->irq], e->irq);
printf(" %s", (e->policy & IRQ_REENABLE) ? "reenable" : " - ");
printf(" %d", e->notify_id);
if (irq_actids[e->irq] & (1 << i))
printf("masked");
printf("\n");
}
printf("\n");
}
/*===========================================================================*
* image_dmp *
*===========================================================================*/
PUBLIC void image_dmp()
{
int m, i,j,r;
struct boot_image *ip;
static char ipc_to[BITCHUNK_BITS*2];
if ((r = sys_getimage(image)) != OK) {
report("IS","warning: couldn't get copy of image table", r);
return;
}
printf("Image table dump showing all processes included in system image.\n");
printf("---name-- -nr- -flags- -traps- -sq- ----pc- -stack- -ipc_to[0]--------\n");
for (m=0; m<NR_BOOT_PROCS; m++) {
ip = &image[m];
for (i=j=0; i < BITCHUNK_BITS; i++, j++) {
ipc_to[j] = (ip->ipc_to & (1<<i)) ? '1' : '0';
if (i % 8 == 7) ipc_to[++j] = ' ';
}
ipc_to[j] = '\0';
printf("%8s %4d %s %s %3d %7lu %7lu %s\n",
ip->proc_name, ip->proc_nr,
s_flags_str(ip->flags), s_traps_str(ip->trap_mask),
ip->priority, (long)ip->initial_pc, ip->stksize, ipc_to);
}
printf("\n");
}
/*===========================================================================*
* sched_dmp *
*===========================================================================*/
PUBLIC void sched_dmp()
{
struct proc *rdy_head[NR_SCHED_QUEUES];
struct kinfo kinfo;
register struct proc *rp;
vir_bytes ptr_diff;
int r;
/* First obtain a scheduling information. */
if ((r = sys_getschedinfo(proc, rdy_head)) != OK) {
report("IS","warning: couldn't get copy of process table", r);
return;
}
/* Then obtain kernel addresses to correct pointer information. */
if ((r = sys_getkinfo(&kinfo)) != OK) {
report("IS","warning: couldn't get kernel addresses", r);
return;
}
/* Update all pointers. Nasty pointer algorithmic ... */
ptr_diff = (vir_bytes) proc - (vir_bytes) kinfo.proc_addr;
for (r=0;r<NR_SCHED_QUEUES; r++)
if (rdy_head[r] != NIL_PROC)
rdy_head[r] =
(struct proc *)((vir_bytes) rdy_head[r] + ptr_diff);
for (rp=BEG_PROC_ADDR; rp < END_PROC_ADDR; rp++)
if (rp->p_nextready != NIL_PROC)
rp->p_nextready =
(struct proc *)((vir_bytes) rp->p_nextready + ptr_diff);
/* Now show scheduling queues. */
printf("Dumping scheduling queues.\n");
for (r=0;r<NR_SCHED_QUEUES; r++) {
rp = rdy_head[r];
if (!rp) continue;
printf("%2d: ", r);
while (rp != NIL_PROC) {
printf("%3d ", rp->p_nr);
rp = rp->p_nextready;
}
printf("\n");
}
printf("\n");
}
/*===========================================================================*
* kenv_dmp *
*===========================================================================*/
PUBLIC void kenv_dmp()
{
struct kinfo kinfo;
struct machine machine;
int r;
if ((r = sys_getkinfo(&kinfo)) != OK) {
report("IS","warning: couldn't get copy of kernel info struct", r);
return;
}
if ((r = sys_getmachine(&machine)) != OK) {
report("IS","warning: couldn't get copy of kernel machine struct", r);
return;
}
printf("Dump of kinfo and machine structures.\n\n");
printf("Machine structure:\n");
printf("- pc_at: %3d\n", machine.pc_at);
printf("- ps_mca: %3d\n", machine.ps_mca);
printf("- processor: %3d\n", machine.processor);
printf("- protected: %3d\n", machine.protected);
printf("- vdu_ega: %3d\n", machine.vdu_ega);
printf("- vdu_vga: %3d\n\n", machine.vdu_vga);
printf("Kernel info structure:\n");
printf("- code_base: %5u\n", kinfo.code_base);
printf("- code_size: %5u\n", kinfo.code_size);
printf("- data_base: %5u\n", kinfo.data_base);
printf("- data_size: %5u\n", kinfo.data_size);
printf("- proc_addr: %5u\n", kinfo.proc_addr);
printf("- kmem_base: %5u\n", kinfo.kmem_base);
printf("- kmem_size: %5u\n", kinfo.kmem_size);
printf("- bootdev_base: %5u\n", kinfo.bootdev_base);
printf("- bootdev_size: %5u\n", kinfo.bootdev_size);
printf("- ramdev_base: %5u\n", kinfo.ramdev_base);
printf("- ramdev_size: %5u\n", kinfo.ramdev_size);
printf("- params_base: %5u\n", kinfo.params_base);
printf("- params_size: %5u\n", kinfo.params_size);
printf("- nr_procs: %3u\n", kinfo.nr_procs);
printf("- nr_tasks: %3u\n", kinfo.nr_tasks);
printf("- release: %.6s\n", kinfo.release);
printf("- version: %.6s\n", kinfo.version);
#if DEBUG_LOCK_CHECK
printf("- relocking: %d\n", kinfo.relocking);
#endif
printf("\n");
}
PRIVATE char *s_flags_str(int flags)
{
static char str[10];
str[0] = (flags & PREEMPTIBLE) ? 'P' : '-';
str[1] = '-';
str[2] = (flags & BILLABLE) ? 'B' : '-';
str[3] = (flags & SYS_PROC) ? 'S' : '-';
str[4] = '-';
str[5] = '\0';
return str;
}
PRIVATE char *s_traps_str(int flags)
{
static char str[10];
str[0] = (flags & (1 << ECHO)) ? 'E' : '-';
str[1] = (flags & (1 << SEND)) ? 'S' : '-';
str[2] = (flags & (1 << RECEIVE)) ? 'R' : '-';
str[3] = (flags & (1 << SENDREC)) ? 'B' : '-';
str[4] = (flags & (1 << NOTIFY)) ? 'N' : '-';
str[5] = '\0';
return str;
}
/*===========================================================================*
* privileges_dmp *
*===========================================================================*/
PUBLIC void privileges_dmp()
{
register struct proc *rp;
static struct proc *oldrp = BEG_PROC_ADDR;
register struct priv *sp;
static char ipc_to[NR_SYS_PROCS + 1 + NR_SYS_PROCS/8];
int r, i,j, n = 0;
/* First obtain a fresh copy of the current process and system table. */
if ((r = sys_getprivtab(priv)) != OK) {
report("IS","warning: couldn't get copy of system privileges table", r);
return;
}
if ((r = sys_getproctab(proc)) != OK) {
report("IS","warning: couldn't get copy of process table", r);
return;
}
printf("\n--nr-id-name---- -flags- -traps- -ipc_to mask------------------------ \n");
for (rp = oldrp; rp < END_PROC_ADDR; rp++) {
if (isemptyp(rp)) continue;
if (++n > 23) break;
if (proc_nr(rp) == IDLE) printf("(%2d) ", proc_nr(rp));
else if (proc_nr(rp) < 0) printf("[%2d] ", proc_nr(rp));
else printf(" %2d ", proc_nr(rp));
r = -1;
for (sp = &priv[0]; sp < &priv[NR_SYS_PROCS]; sp++)
if (sp->s_proc_nr == rp->p_nr) { r ++; break; }
if (r == -1 && ! (rp->p_rts_flags & SLOT_FREE)) {
sp = &priv[USER_PRIV_ID];
}
printf("(%02u) %-7.7s %s %s ",
sp->s_id, rp->p_name,
s_flags_str(sp->s_flags), s_traps_str(sp->s_trap_mask)
);
for (i=j=0; i < NR_SYS_PROCS; i++, j++) {
ipc_to[j] = get_sys_bit(sp->s_ipc_to, i) ? '1' : '0';
if (i % 8 == 7) ipc_to[++j] = ' ';
}
ipc_to[j] = '\0';
printf(" %s \n", ipc_to);
}
if (rp == END_PROC_ADDR) rp = BEG_PROC_ADDR; else printf("--more--\r");
oldrp = rp;
}
/*===========================================================================*
* sendmask_dmp *
*===========================================================================*/
PUBLIC void sendmask_dmp()
{
register struct proc *rp;
static struct proc *oldrp = BEG_PROC_ADDR;
int r, i,j, n = 0;
/* First obtain a fresh copy of the current process table. */
if ((r = sys_getproctab(proc)) != OK) {
report("IS","warning: couldn't get copy of process table", r);
return;
}
printf("\n\n");
printf("Sendmask dump for process table. User processes (*) don't have [].");
printf("\n");
printf("The rows of bits indicate to which processes each process may send.");
printf("\n\n");
#if DEAD_CODE
printf(" ");
for (j=proc_nr(BEG_PROC_ADDR); j< INIT_PROC_NR+1; j++) {
printf("%3d", j);
}
printf(" *\n");
for (rp = oldrp; rp < END_PROC_ADDR; rp++) {
if (isemptyp(rp)) continue;
if (++n > 20) break;
printf("%8s ", rp->p_name);
if (proc_nr(rp) == IDLE) printf("(%2d) ", proc_nr(rp));
else if (proc_nr(rp) < 0) printf("[%2d] ", proc_nr(rp));
else printf(" %2d ", proc_nr(rp));
for (j=proc_nr(BEG_PROC_ADDR); j<INIT_PROC_NR+2; j++) {
if (isallowed(rp->p_sendmask, j)) printf(" 1 ");
else printf(" 0 ");
}
printf("\n");
}
if (rp == END_PROC_ADDR) { printf("\n"); rp = BEG_PROC_ADDR; }
else printf("--more--\r");
oldrp = rp;
#endif
}
PRIVATE char *p_rts_flags_str(int flags)
{
static char str[10];
str[0] = (flags & NO_MAP) ? 'M' : '-';
str[1] = (flags & SENDING) ? 'S' : '-';
str[2] = (flags & RECEIVING) ? 'R' : '-';
str[3] = (flags & SIGNALED) ? 'I' : '-';
str[4] = (flags & SIG_PENDING) ? 'P' : '-';
str[5] = (flags & P_STOP) ? 'T' : '-';
str[6] = '\0';
return str;
}
/*===========================================================================*
* proctab_dmp *
*===========================================================================*/
#if (CHIP == INTEL)
PUBLIC void proctab_dmp()
{
/* Proc table dump */
register struct proc *rp;
static struct proc *oldrp = BEG_PROC_ADDR;
int r, n = 0;
phys_clicks text, data, size;
/* First obtain a fresh copy of the current process table. */
if ((r = sys_getproctab(proc)) != OK) {
report("IS","warning: couldn't get copy of process table", r);
return;
}
printf("\n-nr-----endpoint--name--- -prior-quant- -user---sys----size-rts flags-\n");
for (rp = oldrp; rp < END_PROC_ADDR; rp++) {
if (isemptyp(rp)) continue;
if (++n > 23) break;
text = rp->p_memmap[T].mem_phys;
data = rp->p_memmap[D].mem_phys;
size = rp->p_memmap[T].mem_len
+ ((rp->p_memmap[S].mem_phys + rp->p_memmap[S].mem_len) - data);
if (proc_nr(rp) == IDLE) printf("(%2d) ", proc_nr(rp));
else if (proc_nr(rp) < 0) printf("[%2d] ", proc_nr(rp));
else printf(" %2d ", proc_nr(rp));
printf(" %10d ", rp->p_endpoint);
printf(" %-8.8s %02u/%02u %02d/%02u %6lu%6lu %6uK %s",
rp->p_name,
rp->p_priority, rp->p_max_priority,
rp->p_ticks_left, rp->p_quantum_size,
rp->p_user_time, rp->p_sys_time,
click_to_round_k(size),
p_rts_flags_str(rp->p_rts_flags));
if (rp->p_rts_flags & (SENDING|RECEIVING)) {
printf(" %-7.7s", proc_name(_ENDPOINT_P(rp->p_getfrom_e)));
}
printf("\n");
}
if (rp == END_PROC_ADDR) rp = BEG_PROC_ADDR; else printf("--more--\r");
oldrp = rp;
}
#endif /* (CHIP == INTEL) */
/*===========================================================================*
* memmap_dmp *
*===========================================================================*/
PUBLIC void memmap_dmp()
{
register struct proc *rp;
static struct proc *oldrp = proc;
int r, n = 0;
phys_clicks size;
/* First obtain a fresh copy of the current process table. */
if ((r = sys_getproctab(proc)) != OK) {
report("IS","warning: couldn't get copy of process table", r);
return;
}
printf("\n-nr/name--- --pc-- --sp-- -----text----- -----data----- ----stack----- --size-\n");
for (rp = oldrp; rp < END_PROC_ADDR; rp++) {
if (isemptyp(rp)) continue;
if (++n > 23) break;
size = rp->p_memmap[T].mem_len
+ ((rp->p_memmap[S].mem_phys + rp->p_memmap[S].mem_len)
- rp->p_memmap[D].mem_phys);
printf("%3d %-7.7s%7lx%7lx %4x %4x %4x %4x %4x %4x %4x %4x %4x %5uK\n",
proc_nr(rp),
rp->p_name,
(unsigned long) rp->p_reg.pc,
(unsigned long) rp->p_reg.sp,
rp->p_memmap[T].mem_vir, rp->p_memmap[T].mem_phys, rp->p_memmap[T].mem_len,
rp->p_memmap[D].mem_vir, rp->p_memmap[D].mem_phys, rp->p_memmap[D].mem_len,
rp->p_memmap[S].mem_vir, rp->p_memmap[S].mem_phys, rp->p_memmap[S].mem_len,
click_to_round_k(size));
}
if (rp == END_PROC_ADDR) rp = proc;
else printf("--more--\r");
oldrp = rp;
}
/*===========================================================================*
* proc_name *
*===========================================================================*/
PRIVATE char *proc_name(proc_nr)
int proc_nr;
{
if (proc_nr == ANY) return "ANY";
return cproc_addr(proc_nr)->p_name;
}
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