Just to follow up on this if anyone is interested, the \M command was horribly
inefficient. So I had to rely on making my own dcmd (actually piggy backed on
another) to do this for me in the dump that I captured with all user data in it.
I used the mdb_test module mdb_test.so and reimplimented cmd_pread to do what I
wanted. Then I loaded up the resulting mdb_test.so via ::load into mdb and my
search was done rather quickly.
I ended up changing the guts to be:
alloc_bytes = MIN(nbytes, 8192);
buf = mdb_alloc(alloc_bytes, UM_SLEEP | UM_GC);
for (i = 0; i < nbytes; i+= rbytes) {
rbytes = mdb_pread(buf, alloc_bytes, paddr+i);
if (rbytes >= 0) {
for (j = 0; j < rbytes/8; j++)
if ((buf[j] & 0x3fffffffffff) ==
0x300000400000){
mdb_printf("0x%llx\t0x%llx\n",
paddr+i+(j*8), buf[j]);
}
} else {
mdb_printf("Ended at 0x%llx\n", paddr+i);
break;
}
}
Then PA::pread nbytes worked like a charm for my specific instance. Modifying
::kgrep to accept a -p flag would probably be the best way to go about fixing
this but this hack was much quicker and got the job done.
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