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SubjectRe: [PATCH] tracing/function-graph-tracer: support for x86-64

* Ingo Molnar <mingo@elte.hu> wrote:

> > This patch implements the support for function graph tracer under
> > x86-64. Both static and dynamic tracing are supported.
>
> Fantastic stuff! :-)

Graph tracer output from a 64-bit testbox:

0) | cache_grow() {
0) 0.323 us | _spin_lock();
0) 0.314 us | kmem_flagcheck();
0) | kmem_getpages() {
0) | __alloc_pages_internal() {
0) | get_page_from_freelist() {
0) 0.295 us | next_zones_zonelist();
0) 0.306 us | next_zones_zonelist();
0) 0.394 us | zone_watermark_ok();
0) 0.415 us | _spin_lock_irqsave();
0) | __rmqueue() {
0) | __rmqueue_smallest() {
0) 0.387 us | __mod_zone_page_state();
0) 1.514 us | }
0) 2.369 us | }
0) | zone_statistics() {
0) 0.297 us | __inc_zone_state();
0) 0.290 us | __inc_zone_state();
0) 1.448 us | }
0) 7.315 us | }
0) 7.967 us | }
0) | mod_zone_page_state() {
0) 0.285 us | __mod_zone_page_state();
0) 0.931 us | }
0) 9.993 us | }
0) | kmem_cache_alloc_node() {
0) | cache_alloc_refill() {
nice :)

Ingo


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