summaryrefslogtreecommitdiffstats
path: root/tools/perf/util/session.c
diff options
context:
space:
mode:
Diffstat (limited to 'tools/perf/util/session.c')
-rw-r--r--tools/perf/util/session.c55
1 files changed, 49 insertions, 6 deletions
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 1dd617d116b5..7dc1096264c5 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1,5 +1,8 @@
+#include <errno.h>
+#include <inttypes.h>
#include <linux/kernel.h>
#include <traceevent/event-parse.h>
+#include <api/fs/fs.h>
#include <byteswap.h>
#include <unistd.h>
@@ -8,6 +11,7 @@
#include "evlist.h"
#include "evsel.h"
+#include "memswap.h"
#include "session.h"
#include "tool.h"
#include "sort.h"
@@ -16,6 +20,7 @@
#include "perf_regs.h"
#include "asm/bug.h"
#include "auxtrace.h"
+#include "thread.h"
#include "thread-stack.h"
#include "stat.h"
@@ -139,8 +144,14 @@ struct perf_session *perf_session__new(struct perf_data_file *file,
if (perf_session__open(session) < 0)
goto out_close;
- perf_session__set_id_hdr_size(session);
- perf_session__set_comm_exec(session);
+ /*
+ * set session attributes that are present in perf.data
+ * but not in pipe-mode.
+ */
+ if (!file->is_pipe) {
+ perf_session__set_id_hdr_size(session);
+ perf_session__set_comm_exec(session);
+ }
}
} else {
session->machines.host.env = &perf_env;
@@ -155,7 +166,11 @@ struct perf_session *perf_session__new(struct perf_data_file *file,
pr_warning("Cannot read kernel map\n");
}
- if (tool && tool->ordering_requires_timestamps &&
+ /*
+ * In pipe-mode, evlist is empty until PERF_RECORD_HEADER_ATTR is
+ * processed, so perf_evlist__sample_id_all is not meaningful here.
+ */
+ if ((!file || !file->is_pipe) && tool && tool->ordering_requires_timestamps &&
tool->ordered_events && !perf_evlist__sample_id_all(session->evlist)) {
dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n");
tool->ordered_events = false;
@@ -1239,6 +1254,8 @@ static int machines__deliver_event(struct machines *machines,
return tool->mmap2(tool, event, sample, machine);
case PERF_RECORD_COMM:
return tool->comm(tool, event, sample, machine);
+ case PERF_RECORD_NAMESPACES:
+ return tool->namespaces(tool, event, sample, machine);
case PERF_RECORD_FORK:
return tool->fork(tool, event, sample, machine);
case PERF_RECORD_EXIT:
@@ -1258,9 +1275,12 @@ static int machines__deliver_event(struct machines *machines,
case PERF_RECORD_UNTHROTTLE:
return tool->unthrottle(tool, event, sample, machine);
case PERF_RECORD_AUX:
- if (tool->aux == perf_event__process_aux &&
- (event->aux.flags & PERF_AUX_FLAG_TRUNCATED))
- evlist->stats.total_aux_lost += 1;
+ if (tool->aux == perf_event__process_aux) {
+ if (event->aux.flags & PERF_AUX_FLAG_TRUNCATED)
+ evlist->stats.total_aux_lost += 1;
+ if (event->aux.flags & PERF_AUX_FLAG_PARTIAL)
+ evlist->stats.total_aux_partial += 1;
+ }
return tool->aux(tool, event, sample, machine);
case PERF_RECORD_ITRACE_START:
return tool->itrace_start(tool, event, sample, machine);
@@ -1494,6 +1514,11 @@ int perf_session__register_idle_thread(struct perf_session *session)
err = -1;
}
+ if (thread == NULL || thread__set_namespaces(thread, 0, NULL)) {
+ pr_err("problem inserting idle task.\n");
+ err = -1;
+ }
+
/* machine__findnew_thread() got the thread, so put it */
thread__put(thread);
return err;
@@ -1548,6 +1573,23 @@ static void perf_session__warn_about_errors(const struct perf_session *session)
stats->nr_events[PERF_RECORD_AUX]);
}
+ if (session->tool->aux == perf_event__process_aux &&
+ stats->total_aux_partial != 0) {
+ bool vmm_exclusive = false;
+
+ (void)sysfs__read_bool("module/kvm_intel/parameters/vmm_exclusive",
+ &vmm_exclusive);
+
+ ui__warning("AUX data had gaps in it %" PRIu64 " times out of %u!\n\n"
+ "Are you running a KVM guest in the background?%s\n\n",
+ stats->total_aux_partial,
+ stats->nr_events[PERF_RECORD_AUX],
+ vmm_exclusive ?
+ "\nReloading kvm_intel module with vmm_exclusive=0\n"
+ "will reduce the gaps to only guest's timeslices." :
+ "");
+ }
+
if (stats->nr_unknown_events != 0) {
ui__warning("Found %u unknown events!\n\n"
"Is this an older tool processing a perf.data "
@@ -1628,6 +1670,7 @@ static int __perf_session__process_pipe_events(struct perf_session *session)
buf = malloc(cur_size);
if (!buf)
return -errno;
+ ordered_events__set_copy_on_queue(oe, true);
more:
event = buf;
err = readn(fd, event, sizeof(struct perf_event_header));