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sys/amd64/amd64/minidump_machdep.c
Show First 20 Lines • Show All 54 Lines • ▼ Show 20 Lines | |||||
CTASSERT(sizeof(struct kerneldumpheader) == 512); | CTASSERT(sizeof(struct kerneldumpheader) == 512); | ||||
static struct kerneldumpheader kdh; | static struct kerneldumpheader kdh; | ||||
/* Handle chunked writes. */ | /* Handle chunked writes. */ | ||||
static size_t fragsz; | static size_t fragsz; | ||||
static void *dump_va; | static void *dump_va; | ||||
static size_t counter, progress, dumpsize, wdog_next; | static size_t progress, dumpsize, wdog_next; | ||||
static int dump_retry_count = 5; | static int dump_retry_count = 5; | ||||
SYSCTL_INT(_machdep, OID_AUTO, dump_retry_count, CTLFLAG_RWTUN, | SYSCTL_INT(_machdep, OID_AUTO, dump_retry_count, CTLFLAG_RWTUN, | ||||
&dump_retry_count, 0, "Number of times dump has to retry before bailing out"); | &dump_retry_count, 0, "Number of times dump has to retry before bailing out"); | ||||
#define PG2MB(pgs) (((pgs) + (1 << 8) - 1) >> 8) | #define PG2MB(pgs) (((pgs) + (1 << 8) - 1) >> 8) | ||||
static int | static int | ||||
blk_flush(struct dumperinfo *di) | blk_flush(struct dumperinfo *di) | ||||
{ | { | ||||
int error; | int error; | ||||
if (fragsz == 0) | if (fragsz == 0) | ||||
return (0); | return (0); | ||||
error = dump_append(di, dump_va, 0, fragsz); | error = dump_append(di, dump_va, 0, fragsz); | ||||
fragsz = 0; | fragsz = 0; | ||||
return (error); | return (error); | ||||
} | } | ||||
static struct { | |||||
int min_per; | |||||
int max_per; | |||||
int visited; | |||||
} progress_track[10] = { | |||||
{ 0, 10, 0}, | |||||
{ 10, 20, 0}, | |||||
{ 20, 30, 0}, | |||||
{ 30, 40, 0}, | |||||
{ 40, 50, 0}, | |||||
{ 50, 60, 0}, | |||||
{ 60, 70, 0}, | |||||
{ 70, 80, 0}, | |||||
{ 80, 90, 0}, | |||||
{ 90, 100, 0} | |||||
}; | |||||
static void | |||||
report_progress(size_t progress, size_t dumpsize) | |||||
{ | |||||
int sofar, i; | |||||
sofar = 100 - ((progress * 100) / dumpsize); | |||||
for (i = 0; i < nitems(progress_track); i++) { | |||||
if (sofar < progress_track[i].min_per || | |||||
sofar > progress_track[i].max_per) | |||||
continue; | |||||
if (progress_track[i].visited) | |||||
return; | |||||
progress_track[i].visited = 1; | |||||
printf("..%d%%", sofar); | |||||
return; | |||||
} | |||||
} | |||||
/* Pat the watchdog approximately every 128MB of the dump. */ | /* Pat the watchdog approximately every 128MB of the dump. */ | ||||
#define WDOG_DUMP_INTERVAL (128 * 1024 * 1024) | #define WDOG_DUMP_INTERVAL (128 * 1024 * 1024) | ||||
static int | static int | ||||
blk_write(struct dumperinfo *di, char *ptr, vm_paddr_t pa, size_t sz) | blk_write(struct dumperinfo *di, char *ptr, vm_paddr_t pa, size_t sz) | ||||
{ | { | ||||
size_t len; | size_t len; | ||||
int error, i, c; | int error, i, c; | ||||
Show All 20 Lines | if (ptr != NULL) { | ||||
error = blk_flush(di); | error = blk_flush(di); | ||||
if (error) | if (error) | ||||
return (error); | return (error); | ||||
} | } | ||||
while (sz) { | while (sz) { | ||||
len = maxdumpsz - fragsz; | len = maxdumpsz - fragsz; | ||||
if (len > sz) | if (len > sz) | ||||
len = sz; | len = sz; | ||||
counter += len; | |||||
progress -= len; | progress -= len; | ||||
if (counter >> 24) { | |||||
report_progress(progress, dumpsize); | dumpsys_pb_progress(len); | ||||
counter &= (1<<24) - 1; | |||||
} | |||||
if (progress <= wdog_next) { | if (progress <= wdog_next) { | ||||
wdog_kern_pat(WD_LASTVAL); | wdog_kern_pat(WD_LASTVAL); | ||||
if (wdog_next > WDOG_DUMP_INTERVAL) | if (wdog_next > WDOG_DUMP_INTERVAL) | ||||
wdog_next -= WDOG_DUMP_INTERVAL; | wdog_next -= WDOG_DUMP_INTERVAL; | ||||
else | else | ||||
wdog_next = 0; | wdog_next = 0; | ||||
} | } | ||||
Show All 39 Lines | minidumpsys(struct dumperinfo *di) | ||||
uint64_t *pml4, *pdp, *pd, *pt, pa; | uint64_t *pml4, *pdp, *pd, *pt, pa; | ||||
int i, ii, j, k, n; | int i, ii, j, k, n; | ||||
int retry_count; | int retry_count; | ||||
struct minidumphdr mdhdr; | struct minidumphdr mdhdr; | ||||
retry_count = 0; | retry_count = 0; | ||||
retry: | retry: | ||||
retry_count++; | retry_count++; | ||||
counter = 0; | |||||
for (i = 0; i < nitems(progress_track); i++) | |||||
progress_track[i].visited = 0; | |||||
/* Walk page table pages, set bits in vm_page_dump */ | /* Walk page table pages, set bits in vm_page_dump */ | ||||
pmapsize = 0; | pmapsize = 0; | ||||
for (va = VM_MIN_KERNEL_ADDRESS; va < MAX(KERNBASE + nkpt * NBPDR, | for (va = VM_MIN_KERNEL_ADDRESS; va < MAX(KERNBASE + nkpt * NBPDR, | ||||
kernel_vm_end); ) { | kernel_vm_end); ) { | ||||
/* | /* | ||||
* We always write a page, even if it is zero. Each | * We always write a page, even if it is zero. Each | ||||
* page written corresponds to 1GB of space | * page written corresponds to 1GB of space | ||||
*/ | */ | ||||
▲ Show 20 Lines • Show All 66 Lines • ▼ Show 20 Lines | if (dump_page_is_dumpable(pa)) { | ||||
dumpsize += PAGE_SIZE; | dumpsize += PAGE_SIZE; | ||||
} else { | } else { | ||||
dump_drop_page(pa); | dump_drop_page(pa); | ||||
} | } | ||||
} | } | ||||
dumpsize += PAGE_SIZE; | dumpsize += PAGE_SIZE; | ||||
wdog_next = progress = dumpsize; | wdog_next = progress = dumpsize; | ||||
dumpsys_pb_init(dumpsize); | |||||
/* Initialize mdhdr */ | /* Initialize mdhdr */ | ||||
bzero(&mdhdr, sizeof(mdhdr)); | bzero(&mdhdr, sizeof(mdhdr)); | ||||
strcpy(mdhdr.magic, MINIDUMP_MAGIC); | strcpy(mdhdr.magic, MINIDUMP_MAGIC); | ||||
mdhdr.version = MINIDUMP_VERSION; | mdhdr.version = MINIDUMP_VERSION; | ||||
mdhdr.msgbufsize = msgbufp->msg_size; | mdhdr.msgbufsize = msgbufp->msg_size; | ||||
mdhdr.bitmapsize = round_page(BITSET_SIZE(vm_page_dump_pages)); | mdhdr.bitmapsize = round_page(BITSET_SIZE(vm_page_dump_pages)); | ||||
mdhdr.pmapsize = pmapsize; | mdhdr.pmapsize = pmapsize; | ||||
▲ Show 20 Lines • Show All 129 Lines • Show Last 20 Lines |