perf session: Move kmaps to perf_session
There is still some more work to do to disentangle map creation
from DSO loading, but this happens only for the kernel, and for
the early adopters of perf diff, where this disentanglement
matters most, we'll be testing different kernels, so no problem
here.
Further clarification: right now we create the kernel maps for
the various modules and discontiguous kernel text maps when
loading the DSO, we should do it as a two step process, first
creating the maps, for multiple mappings with the same DSO
store, then doing the dso load just once, for the first hit on
one of the maps sharing this DSO backing store.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1260741029-4430-6-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 2d09c29..222efb1 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -256,7 +256,8 @@
return 0;
}
-void thread__find_addr_location(struct thread *self, u8 cpumode,
+void thread__find_addr_location(struct thread *self,
+ struct perf_session *session, u8 cpumode,
enum map_type type, u64 addr,
struct addr_location *al,
symbol_filter_t filter)
@@ -268,7 +269,7 @@
if (cpumode & PERF_RECORD_MISC_KERNEL) {
al->level = 'k';
- mg = kmaps;
+ mg = &session->kmaps;
} else if (cpumode & PERF_RECORD_MISC_USER)
al->level = '.';
else {
@@ -289,14 +290,14 @@
* "[vdso]" dso, but for now lets use the old trick of looking
* in the whole kernel symbol list.
*/
- if ((long long)al->addr < 0 && mg != kmaps) {
- mg = kmaps;
+ if ((long long)al->addr < 0 && mg != &session->kmaps) {
+ mg = &session->kmaps;
goto try_again;
}
al->sym = NULL;
} else {
al->addr = al->map->map_ip(al->map, al->addr);
- al->sym = map__find_symbol(al->map, al->addr, filter);
+ al->sym = map__find_symbol(al->map, session, al->addr, filter);
}
}
@@ -311,7 +312,7 @@
dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
- thread__find_addr_location(thread, cpumode, MAP__FUNCTION,
+ thread__find_addr_location(thread, session, cpumode, MAP__FUNCTION,
self->ip.ip, al, filter);
dump_printf(" ...... dso: %s\n",
al->map ? al->map->dso->long_name :