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Søren Sandmann Pedersen
2004-11-17 23:37:44 +00:00
parent 38891db079
commit 3b6a53efaf
6 changed files with 157 additions and 111 deletions
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10
sysprof-module.c
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@ -78,13 +78,16 @@ init_userspace_reader (userspace_reader *reader,
reader->page = NULL;
}
/* This is mostly cutted and pasted from ptrace.c
* I removed some locking and other stuff though. I hope it
* wasn't important.
*/
/* Access another process' address space.
* Source/target buffer must be kernel space,
* Do not walk the page table directly, use get_user_pages
*/
static int x_access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, int len, int write)
{
struct mm_struct *mm;
@ -244,6 +247,7 @@ generate_stack_trace(struct task_struct *task,
init_userspace_reader (&reader, task);
while (i < SYSPROF_MAX_ADDRESSES && read_frame (&reader, addr, &frame) &&
addr < START_OF_STACK && addr >= regs->esp) {
trace->addresses[i++] = (void *)frame.return_address;
addr = frame.next;
}