On 12/27/2013 02:21 PM, Arnaldo Carvalho de Melo wrote:
Em Fri, Dec 27, 2013 at 06:03:27PM -0500, Dongsheng Yang escreveu:
As what the usage showing, we can input a event_glob as an argument to list
all symbols. But it does not work well right now.
Example:
# perf list kvmmmu
List of pre-defined events (to be used in -e):
This patch make it work well as follows.
It works:
List of pre-defined events (to be used in -e):
[root@zoo ~]# perf list kvmmmu*:*
kvmmmu:kvm_mmu_pagetable_walk [Tracepoint event]
kvmmmu:kvm_mmu_paging_element [Tracepoint event]
kvmmmu:kvm_mmu_set_accessed_bit [Tracepoint event]
kvmmmu:kvm_mmu_set_dirty_bit [Tracepoint event]
kvmmmu:kvm_mmu_walker_error [Tracepoint event]
kvmmmu:kvm_mmu_get_page [Tracepoint event]
kvmmmu:kvm_mmu_sync_page [Tracepoint event]
kvmmmu:kvm_mmu_unsync_page [Tracepoint event]
kvmmmu:kvm_mmu_prepare_zap_page [Tracepoint event]
kvmmmu:mark_mmio_spte [Tracepoint event]
kvmmmu:handle_mmio_page_fault [Tracepoint event]
kvmmmu:fast_page_fault [Tracepoint event]
kvmmmu:kvm_mmu_invalidate_zap_all_pages [Tracepoint event]
kvmmmu:check_mmio_spte [Tracepoint event]
[root@zoo ~]#
The documentation says, as you repeated above, that a glob can be
provided, not a _substring_ :-)
Yes, you are right. Sorry for that I misunderstood the word of 'glob'.
Thank you for your explanation. :)
Yang
To achive a result similar to:
[root@zoo ~]# perf list hw
cpu-cycles OR cycles [Hardware event]
instructions [Hardware event]
cache-references [Hardware event]
cache-misses [Hardware event]
branch-instructions OR branches [Hardware event]
branch-misses [Hardware event]
bus-cycles [Hardware event]
stalled-cycles-frontend OR idle-cycles-frontend [Hardware event]
ref-cycles [Hardware event]
[root@zoo ~]#
We could say that if no ':' is found in the provided string, and it
doesn't matches one of the other classes, i.e. hw, sw, cache, etc, and
it is the name of a tracepoint subsystem, then it would be equivalent
to 'tracepoint_subsys:*', i.e. 'perf list skb' woud be equivalent to:
[root@zoo ~]# perf list skb:*
skb:kfree_skb [Tracepoint event]
skb:consume_skb [Tracepoint event]
skb:skb_copy_datagram_iovec [Tracepoint event]
[root@zoo ~]#
- Arnaldo
Verification:
# perf list kvmmmu
List of pre-defined events (to be used in -e):
kvmmmu:kvm_mmu_pagetable_walk [Tracepoint event]
kvmmmu:kvm_mmu_paging_element [Tracepoint event]
kvmmmu:kvm_mmu_set_accessed_bit [Tracepoint event]
kvmmmu:kvm_mmu_set_dirty_bit [Tracepoint event]
kvmmmu:kvm_mmu_walker_error [Tracepoint event]
kvmmmu:kvm_mmu_get_page [Tracepoint event]
kvmmmu:kvm_mmu_sync_page [Tracepoint event]
kvmmmu:kvm_mmu_unsync_page [Tracepoint event]
kvmmmu:kvm_mmu_prepare_zap_page [Tracepoint event]
kvmmmu:mark_mmio_spte [Tracepoint event]
kvmmmu:handle_mmio_page_fault [Tracepoint event]
kvmmmu:fast_page_fault [Tracepoint event]
Signed-off-by: Dongsheng Yang <[email protected]>
---
tools/perf/util/parse-events.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 094c28b..d887ea4 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -1236,6 +1236,8 @@ void print_events(const char *event_glob, bool name_only)
print_pmu_events(event_glob, name_only);
+ print_tracepoint_events(event_glob, NULL, name_only);
+
if (event_glob != NULL)
return;
@@ -1254,8 +1256,6 @@ void print_events(const char *event_glob, bool name_only)
event_type_descriptors[PERF_TYPE_BREAKPOINT]);
printf("\n");
}
-
- print_tracepoint_events(NULL, NULL, name_only);
}
int parse_events__is_hardcoded_term(struct parse_events_term *term)
--
1.8.2.1
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