summaryrefslogtreecommitdiff
path: root/tools/perf/util/db-export.c
diff options
context:
space:
mode:
Diffstat (limited to 'tools/perf/util/db-export.c')
-rw-r--r--tools/perf/util/db-export.c89
1 files changed, 87 insertions, 2 deletions
diff --git a/tools/perf/util/db-export.c b/tools/perf/util/db-export.c
index 049438d51b9a..8d96c80cc67e 100644
--- a/tools/perf/util/db-export.c
+++ b/tools/perf/util/db-export.c
@@ -23,6 +23,8 @@
#include "event.h"
#include "util.h"
#include "thread-stack.h"
+#include "callchain.h"
+#include "call-path.h"
#include "db-export.h"
struct deferred_export {
@@ -258,8 +260,7 @@ static int db_ids_from_al(struct db_export *dbe, struct addr_location *al,
if (!al->sym) {
al->sym = symbol__new(al->addr, 0, 0, "unknown");
if (al->sym)
- symbols__insert(&dso->symbols[al->map->type],
- al->sym);
+ dso__insert_symbol(dso, al->map->type, al->sym);
}
if (al->sym) {
@@ -276,6 +277,80 @@ static int db_ids_from_al(struct db_export *dbe, struct addr_location *al,
return 0;
}
+static struct call_path *call_path_from_sample(struct db_export *dbe,
+ struct machine *machine,
+ struct thread *thread,
+ struct perf_sample *sample,
+ struct perf_evsel *evsel)
+{
+ u64 kernel_start = machine__kernel_start(machine);
+ struct call_path *current = &dbe->cpr->call_path;
+ enum chain_order saved_order = callchain_param.order;
+ int err;
+
+ if (!symbol_conf.use_callchain || !sample->callchain)
+ return NULL;
+
+ /*
+ * Since the call path tree must be built starting with the root, we
+ * must use ORDER_CALL for call chain resolution, in order to process
+ * the callchain starting with the root node and ending with the leaf.
+ */
+ callchain_param.order = ORDER_CALLER;
+ err = thread__resolve_callchain(thread, &callchain_cursor, evsel,
+ sample, NULL, NULL,
+ sysctl_perf_event_max_stack);
+ if (err) {
+ callchain_param.order = saved_order;
+ return NULL;
+ }
+ callchain_cursor_commit(&callchain_cursor);
+
+ while (1) {
+ struct callchain_cursor_node *node;
+ struct addr_location al;
+ u64 dso_db_id = 0, sym_db_id = 0, offset = 0;
+
+ memset(&al, 0, sizeof(al));
+
+ node = callchain_cursor_current(&callchain_cursor);
+ if (!node)
+ break;
+ /*
+ * Handle export of symbol and dso for this node by
+ * constructing an addr_location struct and then passing it to
+ * db_ids_from_al() to perform the export.
+ */
+ al.sym = node->sym;
+ al.map = node->map;
+ al.machine = machine;
+ al.addr = node->ip;
+
+ if (al.map && !al.sym)
+ al.sym = dso__find_symbol(al.map->dso, MAP__FUNCTION,
+ al.addr);
+
+ db_ids_from_al(dbe, &al, &dso_db_id, &sym_db_id, &offset);
+
+ /* add node to the call path tree if it doesn't exist */
+ current = call_path__findnew(dbe->cpr, current,
+ al.sym, node->ip,
+ kernel_start);
+
+ callchain_cursor_advance(&callchain_cursor);
+ }
+
+ /* Reset the callchain order to its prior value. */
+ callchain_param.order = saved_order;
+
+ if (current == &dbe->cpr->call_path) {
+ /* Bail because the callchain was empty. */
+ return NULL;
+ }
+
+ return current;
+}
+
int db_export__branch_type(struct db_export *dbe, u32 branch_type,
const char *name)
{
@@ -329,6 +404,16 @@ int db_export__sample(struct db_export *dbe, union perf_event *event,
if (err)
goto out_put;
+ if (dbe->cpr) {
+ struct call_path *cp = call_path_from_sample(dbe, al->machine,
+ thread, sample,
+ evsel);
+ if (cp) {
+ db_export__call_path(dbe, cp);
+ es.call_path_id = cp->db_id;
+ }
+ }
+
if ((evsel->attr.sample_type & PERF_SAMPLE_ADDR) &&
sample_addr_correlates_sym(&evsel->attr)) {
struct addr_location addr_al;