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>

1 files changed, 8 insertions, 6 deletions

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index efa8147b8991..3487224670a8 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -414,6 +414,7 @@ static int call__match(struct symbol *sym)
 }
 
 static struct symbol **resolve_callchain(struct thread *thread,
+					 struct perf_session *session,
 					 struct ip_callchain *chain,
 					 struct symbol **parent)
 {
@@ -447,8 +448,8 @@ static struct symbol **resolve_callchain(struct thread *thread,
 			continue;
 		}
 
-		thread__find_addr_location(thread, cpumode, MAP__FUNCTION,
-					   ip, &al, NULL);
+		thread__find_addr_location(thread, session, cpumode,
+					   MAP__FUNCTION, ip, &al, NULL);
 		if (al.sym != NULL) {
 			if (sort__has_parent && !*parent &&
 			    call__match(al.sym))
@@ -467,6 +468,7 @@ static struct symbol **resolve_callchain(struct thread *thread,
  */
 
 static int hist_entry__add(struct addr_location *al,
+			   struct perf_session *session,
 			   struct ip_callchain *chain, u64 count)
 {
 	struct symbol **syms = NULL, *parent = NULL;
@@ -474,7 +476,7 @@ static int hist_entry__add(struct addr_location *al,
 	struct hist_entry *he;
 
 	if ((sort__has_parent || callchain) && chain)
-		syms = resolve_callchain(al->thread, chain, &parent);
+		syms = resolve_callchain(al->thread, session, chain, &parent);
 
 	he = __hist_entry__add(al, parent, count, &hit);
 	if (he == NULL)
@@ -650,7 +652,7 @@ static int process_sample_event(event_t *event, struct perf_session *session)
 
 	cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 
-	thread__find_addr_location(thread, cpumode,
+	thread__find_addr_location(thread, session, cpumode,
 				   MAP__FUNCTION, data.ip, &al, NULL);
 	/*
 	 * We have to do this here as we may have a dso with no symbol hit that
@@ -669,7 +671,7 @@ static int process_sample_event(event_t *event, struct perf_session *session)
 	if (sym_list && al.sym && !strlist__has_entry(sym_list, al.sym->name))
 		return 0;
 
-	if (hist_entry__add(&al, data.callchain, data.period)) {
+	if (hist_entry__add(&al, session, data.callchain, data.period)) {
 		pr_debug("problem incrementing symbol count, skipping event\n");
 		return -1;
 	}
@@ -763,7 +765,7 @@ static int __cmd_report(void)
 	int ret;
 	struct perf_session *session;
 
-	session = perf_session__new(input_name, O_RDONLY, force);
+	session = perf_session__new(input_name, O_RDONLY, force, &symbol_conf);
 	if (session == NULL)
 		return -ENOMEM;