varun-r-mallya/sysprof
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Søren Sandmann Pedersen
2004-11-02 15:48:04 +00:00
parent 786bef0abb
commit 64b015875c
2 changed files with 14 additions and 17 deletions
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15
README
View File

@ -8,6 +8,19 @@ program "sysprof".
- You need gtk+ 2.4.0 or better, and you need libglade - You need gtk+ 2.4.0 or better, and you need libglade
- Thanks to Kristian H<>gsberg, it now works on the 2.6 kernel. - You need a 2.6 non-SMP kernel
- It is known to be broken on SMP kernels. Patches gladly accepted.
- The programs you want to profile should have debugging symbols, or
you won't get much useful information.
- To get symbols from the X server, run sysprof as root (go figure).
S<EFBFBD>ren S<EFBFBD>ren
Credits:
Kristian H<>gsberg for the first port to 2.6

16
sysprof-module.c
View File

@ -43,7 +43,6 @@ static struct timer_list timer;
static void static void
init_timeout (void) init_timeout (void)
{ {
printk (KERN_ALERT "init timeout\n");
timer.function = on_timer; timer.function = on_timer;
init_timer(&timer); init_timer(&timer);
} }
@ -91,9 +90,6 @@ read_user_space (userspace_reader *reader,
if (user_page == 0) if (user_page == 0)
return 0; return 0;
printk (KERN_ALERT "locking\n");
spin_lock(&reader->task->mm->page_table_lock);
if (!reader->user_page || user_page != reader->user_page) { if (!reader->user_page || user_page != reader->user_page) {
int found; int found;
struct page *page; struct page *page;
@ -107,19 +103,12 @@ read_user_space (userspace_reader *reader,
1, 0, 0, &page, NULL); 1, 0, 0, &page, NULL);
if (!found) if (!found)
{
printk (KERN_ALERT "unlocking\n");
spin_unlock(&reader->task->mm->page_table_lock);
return 0; return 0;
}
reader->kernel_page = (unsigned long)kmap (page); reader->kernel_page = (unsigned long)kmap (page);
reader->page = page; reader->page = page;
} }
printk (KERN_ALERT "unlocking\n");
spin_unlock(&reader->task->mm->page_table_lock);
if (get_user (res, (int *)(reader->kernel_page + (address - user_page))) != 0) if (get_user (res, (int *)(reader->kernel_page + (address - user_page))) != 0)
return 0; return 0;
@ -211,8 +200,6 @@ do_generate (void *data)
in_queue = 0; in_queue = 0;
printk (KERN_ALERT "do_generate\n");
/* Make sure the task still exists */ /* Make sure the task still exists */
for_each_process (p) for_each_process (p)
if (p == task) if (p == task)
@ -221,7 +208,6 @@ do_generate (void *data)
go_ahead: go_ahead:
generate_stack_trace(task, head); generate_stack_trace(task, head);
printk (KERN_ALERT "generated stack\n");
if (head++ == &stack_traces[N_TRACES - 1]) if (head++ == &stack_traces[N_TRACES - 1])
head = &stack_traces[0]; head = &stack_traces[0];
@ -249,8 +235,6 @@ on_timer(unsigned long dong)
++n_ticks; ++n_ticks;
printk (KERN_ALERT "on timer\n");
if (task && task->pid != 0) if (task && task->pid != 0)
queue_generate_stack_trace (task); queue_generate_stack_trace (task);