Merge tag 'v3.10-rc1' into stable/for-linus-3.10

Linux 3.10-rc1

* tag 'v3.10-rc1': (12273 commits)
  Linux 3.10-rc1
  [SCSI] qla2xxx: Update firmware link in Kconfig file.
  [SCSI] iscsi class, qla4xxx: fix sess/conn refcounting when find fns are used
  [SCSI] sas: unify the pointlessly separated enums sas_dev_type and sas_device_type
  [SCSI] pm80xx: thermal, sas controller config and error handling update
  [SCSI] pm80xx: NCQ error handling changes
  [SCSI] pm80xx: WWN Modification for PM8081/88/89 controllers
  [SCSI] pm80xx: Changed module name and debug messages update
  [SCSI] pm80xx: Firmware flash memory free fix, with addition of new memory region for it
  [SCSI] pm80xx: SPC new firmware changes for device id 0x8081 alone
  [SCSI] pm80xx: Added SPCv/ve specific hardware functionalities and relevant changes in common files
  [SCSI] pm80xx: MSI-X implementation for using 64 interrupts
  [SCSI] pm80xx: Updated common functions common for SPC and SPCv/ve
  [SCSI] pm80xx: Multiple inbound/outbound queue configuration
  [SCSI] pm80xx: Added SPCv/ve specific ids, variables and modify for SPC
  [SCSI] lpfc: fix up Kconfig dependencies
  [SCSI] Handle MLQUEUE busy response in scsi_send_eh_cmnd
  dm cache: set config value
  dm cache: move config fns
  dm thin: generate event when metadata threshold passed
  ...

1 files changed, 123 insertions, 0 deletions

diff --git a/tools/perf/tests/task-exit.c b/tools/perf/tests/task-exit.c
new file mode 100644
index 000000000000..28fe5894b061
--- /dev/null
+++ b/tools/perf/tests/task-exit.c
@@ -0,0 +1,123 @@
+#include "evlist.h"
+#include "evsel.h"
+#include "thread_map.h"
+#include "cpumap.h"
+#include "tests.h"
+
+#include <signal.h>
+
+static int exited;
+static int nr_exit;
+
+static void sig_handler(int sig)
+{
+        exited = 1;
+
+        if (sig == SIGUSR1)
+                nr_exit = -1;
+}
+
+/*
+ * This test will start a workload that does nothing then it checks
+ * if the number of exit event reported by the kernel is 1 or not
+ * in order to check the kernel returns correct number of event.
+ */
+int test__task_exit(void)
+{
+        int err = -1;
+        union perf_event *event;
+        struct perf_evsel *evsel;
+        struct perf_evlist *evlist;
+        struct perf_target target = {
+                .uid            = UINT_MAX,
+                .uses_mmap      = true,
+        };
+        const char *argv[] = { "true", NULL };
+
+        signal(SIGCHLD, sig_handler);
+        signal(SIGUSR1, sig_handler);
+
+        evlist = perf_evlist__new();
+        if (evlist == NULL) {
+                pr_debug("perf_evlist__new\n");
+                return -1;
+        }
+        /*
+         * We need at least one evsel in the evlist, use the default
+         * one: "cycles".
+         */
+        err = perf_evlist__add_default(evlist);
+        if (err < 0) {
+                pr_debug("Not enough memory to create evsel\n");
+                goto out_free_evlist;
+        }
+
+        /*
+         * Create maps of threads and cpus to monitor. In this case
+         * we start with all threads and cpus (-1, -1) but then in
+         * perf_evlist__prepare_workload we'll fill in the only thread
+         * we're monitoring, the one forked there.
+         */
+        evlist->cpus = cpu_map__dummy_new();
+        evlist->threads = thread_map__new_by_tid(-1);
+        if (!evlist->cpus || !evlist->threads) {
+                err = -ENOMEM;
+                pr_debug("Not enough memory to create thread/cpu maps\n");
+                goto out_delete_maps;
+        }
+
+        err = perf_evlist__prepare_workload(evlist, &target, argv, false, true);
+        if (err < 0) {
+                pr_debug("Couldn't run the workload!\n");
+                goto out_delete_maps;
+        }
+
+        evsel = perf_evlist__first(evlist);
+        evsel->attr.task = 1;
+        evsel->attr.sample_freq = 0;
+        evsel->attr.inherit = 0;
+        evsel->attr.watermark = 0;
+        evsel->attr.wakeup_events = 1;
+        evsel->attr.exclude_kernel = 1;
+
+        err = perf_evlist__open(evlist);
+        if (err < 0) {
+                pr_debug("Couldn't open the evlist: %s\n", strerror(-err));
+                goto out_delete_maps;
+        }
+
+        if (perf_evlist__mmap(evlist, 128, true) < 0) {
+                pr_debug("failed to mmap events: %d (%s)\n", errno,
+                         strerror(errno));
+                goto out_close_evlist;
+        }
+
+        perf_evlist__start_workload(evlist);
+
+retry:
+        while ((event = perf_evlist__mmap_read(evlist, 0)) != NULL) {
+                if (event->header.type != PERF_RECORD_EXIT)
+                        continue;
+
+                nr_exit++;
+        }
+
+        if (!exited || !nr_exit) {
+                poll(evlist->pollfd, evlist->nr_fds, -1);
+                goto retry;
+        }
+
+        if (nr_exit != 1) {
+                pr_debug("received %d EXIT records\n", nr_exit);
+                err = -1;
+        }
+
+        perf_evlist__munmap(evlist);
+out_close_evlist:
+        perf_evlist__close(evlist);
+out_delete_maps:
+        perf_evlist__delete_maps(evlist);
+out_free_evlist:
+        perf_evlist__delete(evlist);
+        return err;
+}