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Use kernel builtin tracer instead of copying everything ourselves.

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2008-03-20  Soren Sandmann <sandmann@redhat.com>
 
       * module/sysprof-module.c (trace_kernel): Use kernel builtin
       tracer instead of copying everything ourselves.


svn path=/trunk/; revision=401
This commit is contained in:
Soren Sandmann
2008-03-20 09:49:46 +00:00
committed by Søren Sandmann Pedersen
parent 83fd2bbc31
commit c2de993836
5 changed files with 107 additions and 31 deletions
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22
collector.c
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@ -143,8 +143,7 @@ add_trace_to_stash (const SysprofStackTrace *trace,
g_assert (a == n_addresses);
#endif
stack_stash_add_trace (
stash, addrs, a, 1);
stack_stash_add_trace (stash, addrs, a, 1);
if (addrs != addrs_stack)
g_free (addrs);
@ -195,6 +194,15 @@ collect_traces (Collector *collector)
g_print ("-=-\n");
}
#endif
#if 0
{
int i;
g_print ("pid: %d (%d)\n", trace->pid, trace->n_addresses);
for (i=0; i < trace->n_kernel_words; ++i)
g_print ("rd: %08x\n", trace->kernel_stack[i]);
g_print ("-=-\n");
}
#endif
add_trace_to_stash (trace, collector->stash);
@ -403,7 +411,12 @@ lookup_symbol (Process *process, gpointer address,
* legitimately be at offset 0.
*/
if (offset == 0 && !first_addr)
{
#if 0
g_print ("rejecting callback: %s (%p)\n", sym, address);
#endif
sym = NULL;
}
/* If offset is greater than 4096, then what happened is most
* likely that it is the address of something in the gap between the
@ -414,7 +427,12 @@ lookup_symbol (Process *process, gpointer address,
* is, and act accordingly. Actually, we should look at /proc/modules
*/
if (offset > 4096)
{
#if 0
g_print ("offset\n");
#endif
sym = NULL;
}
}
else
{