--- /dev/null
+#include "perf.h"
+#include "util/debug.h"
+#include "util/symbol.h"
+#include "util/sort.h"
+#include "util/evsel.h"
+#include "util/evlist.h"
+#include "util/machine.h"
+#include "util/thread.h"
+#include "util/parse-events.h"
+#include "tests/tests.h"
+#include "tests/hists_common.h"
+
+struct sample {
+ u32 pid;
+ u64 ip;
+ struct thread *thread;
+ struct map *map;
+ struct symbol *sym;
+};
+
+/* For the numbers, see hists_common.c */
+static struct sample fake_samples[] = {
+ /* perf [kernel] schedule() */
+ { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_KERNEL_SCHEDULE, },
+ /* perf [perf] main() */
+ { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_MAIN, },
+ /* perf [perf] cmd_record() */
+ { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_CMD_RECORD, },
+ /* perf [libc] malloc() */
+ { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_MALLOC, },
+ /* perf [libc] free() */
+ { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_FREE, },
+ /* perf [perf] main() */
+ { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_MAIN, },
+ /* perf [kernel] page_fault() */
+ { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_KERNEL_PAGE_FAULT, },
+ /* bash [bash] main() */
+ { .pid = FAKE_PID_BASH, .ip = FAKE_IP_BASH_MAIN, },
+ /* bash [bash] xmalloc() */
+ { .pid = FAKE_PID_BASH, .ip = FAKE_IP_BASH_XMALLOC, },
+ /* bash [kernel] page_fault() */
+ { .pid = FAKE_PID_BASH, .ip = FAKE_IP_KERNEL_PAGE_FAULT, },
+};
+
+/*
+ * Will be casted to struct ip_callchain which has all 64 bit entries
+ * of nr and ips[].
+ */
+static u64 fake_callchains[][10] = {
+ /* schedule => run_command => main */
+ { 3, FAKE_IP_KERNEL_SCHEDULE, FAKE_IP_PERF_RUN_COMMAND, FAKE_IP_PERF_MAIN, },
+ /* main */
+ { 1, FAKE_IP_PERF_MAIN, },
+ /* cmd_record => run_command => main */
+ { 3, FAKE_IP_PERF_CMD_RECORD, FAKE_IP_PERF_RUN_COMMAND, FAKE_IP_PERF_MAIN, },
+ /* malloc => cmd_record => run_command => main */
+ { 4, FAKE_IP_LIBC_MALLOC, FAKE_IP_PERF_CMD_RECORD, FAKE_IP_PERF_RUN_COMMAND,
+ FAKE_IP_PERF_MAIN, },
+ /* free => cmd_record => run_command => main */
+ { 4, FAKE_IP_LIBC_FREE, FAKE_IP_PERF_CMD_RECORD, FAKE_IP_PERF_RUN_COMMAND,
+ FAKE_IP_PERF_MAIN, },
+ /* main */
+ { 1, FAKE_IP_PERF_MAIN, },
+ /* page_fault => sys_perf_event_open => run_command => main */
+ { 4, FAKE_IP_KERNEL_PAGE_FAULT, FAKE_IP_KERNEL_SYS_PERF_EVENT_OPEN,
+ FAKE_IP_PERF_RUN_COMMAND, FAKE_IP_PERF_MAIN, },
+ /* main */
+ { 1, FAKE_IP_BASH_MAIN, },
+ /* xmalloc => malloc => xmalloc => malloc => xmalloc => main */
+ { 6, FAKE_IP_BASH_XMALLOC, FAKE_IP_LIBC_MALLOC, FAKE_IP_BASH_XMALLOC,
+ FAKE_IP_LIBC_MALLOC, FAKE_IP_BASH_XMALLOC, FAKE_IP_BASH_MAIN, },
+ /* page_fault => malloc => main */
+ { 3, FAKE_IP_KERNEL_PAGE_FAULT, FAKE_IP_LIBC_MALLOC, FAKE_IP_BASH_MAIN, },
+};
+
+static int add_hist_entries(struct hists *hists, struct machine *machine)
+{
+ struct addr_location al;
+ struct perf_evsel *evsel = hists_to_evsel(hists);
+ struct perf_sample sample = { .period = 1000, };
+ size_t i;
+
+ for (i = 0; i < ARRAY_SIZE(fake_samples); i++) {
+ const union perf_event event = {
+ .header = {
+ .misc = PERF_RECORD_MISC_USER,
+ },
+ };
+ struct hist_entry_iter iter = {
+ .hide_unresolved = false,
+ };
+
+ if (symbol_conf.cumulate_callchain)
+ iter.ops = &hist_iter_cumulative;
+ else
+ iter.ops = &hist_iter_normal;
+
+ sample.pid = fake_samples[i].pid;
+ sample.tid = fake_samples[i].pid;
+ sample.ip = fake_samples[i].ip;
+ sample.callchain = (struct ip_callchain *)fake_callchains[i];
+
+ if (perf_event__preprocess_sample(&event, machine, &al,
+ &sample) < 0)
+ goto out;
+
+ if (hist_entry_iter__add(&iter, &al, evsel, &sample,
+ PERF_MAX_STACK_DEPTH, NULL) < 0)
+ goto out;
+
+ fake_samples[i].thread = al.thread;
+ fake_samples[i].map = al.map;
+ fake_samples[i].sym = al.sym;
+ }
+
+ return TEST_OK;
+
+out:
+ pr_debug("Not enough memory for adding a hist entry\n");
+ return TEST_FAIL;
+}
+
+static void del_hist_entries(struct hists *hists)
+{
+ struct hist_entry *he;
+ struct rb_root *root_in;
+ struct rb_root *root_out;
+ struct rb_node *node;
+
+ if (sort__need_collapse)
+ root_in = &hists->entries_collapsed;
+ else
+ root_in = hists->entries_in;
+
+ root_out = &hists->entries;
+
+ while (!RB_EMPTY_ROOT(root_out)) {
+ node = rb_first(root_out);
+
+ he = rb_entry(node, struct hist_entry, rb_node);
+ rb_erase(node, root_out);
+ rb_erase(&he->rb_node_in, root_in);
+ hist_entry__free(he);
+ }
+}
+
+typedef int (*test_fn_t)(struct perf_evsel *, struct machine *);
+
+#define COMM(he) (thread__comm_str(he->thread))
+#define DSO(he) (he->ms.map->dso->short_name)
+#define SYM(he) (he->ms.sym->name)
+#define CPU(he) (he->cpu)
+#define PID(he) (he->thread->tid)
+#define DEPTH(he) (he->callchain->max_depth)
+#define CDSO(cl) (cl->ms.map->dso->short_name)
+#define CSYM(cl) (cl->ms.sym->name)
+
+struct result {
+ u64 children;
+ u64 self;
+ const char *comm;
+ const char *dso;
+ const char *sym;
+};
+
+struct callchain_result {
+ u64 nr;
+ struct {
+ const char *dso;
+ const char *sym;
+ } node[10];
+};
+
+static int do_test(struct hists *hists, struct result *expected, size_t nr_expected,
+ struct callchain_result *expected_callchain, size_t nr_callchain)
+{
+ char buf[32];
+ size_t i, c;
+ struct hist_entry *he;
+ struct rb_root *root;
+ struct rb_node *node;
+ struct callchain_node *cnode;
+ struct callchain_list *clist;
+
+ /*
+ * adding and deleting hist entries must be done outside of this
+ * function since TEST_ASSERT_VAL() returns in case of failure.
+ */
+ hists__collapse_resort(hists, NULL);
+ hists__output_resort(hists);
+
+ if (verbose > 2) {
+ pr_info("use callchain: %d, cumulate callchain: %d\n",
+ symbol_conf.use_callchain,
+ symbol_conf.cumulate_callchain);
+ print_hists_out(hists);
+ }
+
+ root = &hists->entries;
+ for (node = rb_first(root), i = 0;
+ node && (he = rb_entry(node, struct hist_entry, rb_node));
+ node = rb_next(node), i++) {
+ scnprintf(buf, sizeof(buf), "Invalid hist entry #%zd", i);
+
+ TEST_ASSERT_VAL("Incorrect number of hist entry",
+ i < nr_expected);
+ TEST_ASSERT_VAL(buf, he->stat.period == expected[i].self &&
+ !strcmp(COMM(he), expected[i].comm) &&
+ !strcmp(DSO(he), expected[i].dso) &&
+ !strcmp(SYM(he), expected[i].sym));
+
+ if (symbol_conf.cumulate_callchain)
+ TEST_ASSERT_VAL(buf, he->stat_acc->period == expected[i].children);
+
+ if (!symbol_conf.use_callchain)
+ continue;
+
+ /* check callchain entries */
+ root = &he->callchain->node.rb_root;
+ cnode = rb_entry(rb_first(root), struct callchain_node, rb_node);
+
+ c = 0;
+ list_for_each_entry(clist, &cnode->val, list) {
+ scnprintf(buf, sizeof(buf), "Invalid callchain entry #%zd/%zd", i, c);
+
+ TEST_ASSERT_VAL("Incorrect number of callchain entry",
+ c < expected_callchain[i].nr);
+ TEST_ASSERT_VAL(buf,
+ !strcmp(CDSO(clist), expected_callchain[i].node[c].dso) &&
+ !strcmp(CSYM(clist), expected_callchain[i].node[c].sym));
+ c++;
+ }
+ /* TODO: handle multiple child nodes properly */
+ TEST_ASSERT_VAL("Incorrect number of callchain entry",
+ c <= expected_callchain[i].nr);
+ }
+ TEST_ASSERT_VAL("Incorrect number of hist entry",
+ i == nr_expected);
+ TEST_ASSERT_VAL("Incorrect number of callchain entry",
+ !symbol_conf.use_callchain || nr_expected == nr_callchain);
+ return 0;
+}
+
+/* NO callchain + NO children */
+static int test1(struct perf_evsel *evsel, struct machine *machine)
+{
+ int err;
+ struct hists *hists = &evsel->hists;
+ /*
+ * expected output:
+ *
+ * Overhead Command Shared Object Symbol
+ * ======== ======= ============= ==============
+ * 20.00% perf perf [.] main
+ * 10.00% bash [kernel] [k] page_fault
+ * 10.00% bash bash [.] main
+ * 10.00% bash bash [.] xmalloc
+ * 10.00% perf [kernel] [k] page_fault
+ * 10.00% perf [kernel] [k] schedule
+ * 10.00% perf libc [.] free
+ * 10.00% perf libc [.] malloc
+ * 10.00% perf perf [.] cmd_record
+ */
+ struct result expected[] = {
+ { 0, 2000, "perf", "perf", "main" },
+ { 0, 1000, "bash", "[kernel]", "page_fault" },
+ { 0, 1000, "bash", "bash", "main" },
+ { 0, 1000, "bash", "bash", "xmalloc" },
+ { 0, 1000, "perf", "[kernel]", "page_fault" },
+ { 0, 1000, "perf", "[kernel]", "schedule" },
+ { 0, 1000, "perf", "libc", "free" },
+ { 0, 1000, "perf", "libc", "malloc" },
+ { 0, 1000, "perf", "perf", "cmd_record" },
+ };
+
+ symbol_conf.use_callchain = false;
+ symbol_conf.cumulate_callchain = false;
+
+ setup_sorting();
+ callchain_register_param(&callchain_param);
+
+ err = add_hist_entries(hists, machine);
+ if (err < 0)
+ goto out;
+
+ err = do_test(hists, expected, ARRAY_SIZE(expected), NULL, 0);
+
+out:
+ del_hist_entries(hists);
+ reset_output_field();
+ return err;
+}
+
+/* callcain + NO children */
+static int test2(struct perf_evsel *evsel, struct machine *machine)
+{
+ int err;
+ struct hists *hists = &evsel->hists;
+ /*
+ * expected output:
+ *
+ * Overhead Command Shared Object Symbol
+ * ======== ======= ============= ==============
+ * 20.00% perf perf [.] main
+ * |
+ * --- main
+ *
+ * 10.00% bash [kernel] [k] page_fault
+ * |
+ * --- page_fault
+ * malloc
+ * main
+ *
+ * 10.00% bash bash [.] main
+ * |
+ * --- main
+ *
+ * 10.00% bash bash [.] xmalloc
+ * |
+ * --- xmalloc
+ * malloc
+ * xmalloc <--- NOTE: there's a cycle
+ * malloc
+ * xmalloc
+ * main
+ *
+ * 10.00% perf [kernel] [k] page_fault
+ * |
+ * --- page_fault
+ * sys_perf_event_open
+ * run_command
+ * main
+ *
+ * 10.00% perf [kernel] [k] schedule
+ * |
+ * --- schedule
+ * run_command
+ * main
+ *
+ * 10.00% perf libc [.] free
+ * |
+ * --- free
+ * cmd_record
+ * run_command
+ * main
+ *
+ * 10.00% perf libc [.] malloc
+ * |
+ * --- malloc
+ * cmd_record
+ * run_command
+ * main
+ *
+ * 10.00% perf perf [.] cmd_record
+ * |
+ * --- cmd_record
+ * run_command
+ * main
+ *
+ */
+ struct result expected[] = {
+ { 0, 2000, "perf", "perf", "main" },
+ { 0, 1000, "bash", "[kernel]", "page_fault" },
+ { 0, 1000, "bash", "bash", "main" },
+ { 0, 1000, "bash", "bash", "xmalloc" },
+ { 0, 1000, "perf", "[kernel]", "page_fault" },
+ { 0, 1000, "perf", "[kernel]", "schedule" },
+ { 0, 1000, "perf", "libc", "free" },
+ { 0, 1000, "perf", "libc", "malloc" },
+ { 0, 1000, "perf", "perf", "cmd_record" },
+ };
+ struct callchain_result expected_callchain[] = {
+ {
+ 1, { { "perf", "main" }, },
+ },
+ {
+ 3, { { "[kernel]", "page_fault" },
+ { "libc", "malloc" },
+ { "bash", "main" }, },
+ },
+ {
+ 1, { { "bash", "main" }, },
+ },
+ {
+ 6, { { "bash", "xmalloc" },
+ { "libc", "malloc" },
+ { "bash", "xmalloc" },
+ { "libc", "malloc" },
+ { "bash", "xmalloc" },
+ { "bash", "main" }, },
+ },
+ {
+ 4, { { "[kernel]", "page_fault" },
+ { "[kernel]", "sys_perf_event_open" },
+ { "perf", "run_command" },
+ { "perf", "main" }, },
+ },
+ {
+ 3, { { "[kernel]", "schedule" },
+ { "perf", "run_command" },
+ { "perf", "main" }, },
+ },
+ {
+ 4, { { "libc", "free" },
+ { "perf", "cmd_record" },
+ { "perf", "run_command" },
+ { "perf", "main" }, },
+ },
+ {
+ 4, { { "libc", "malloc" },
+ { "perf", "cmd_record" },
+ { "perf", "run_command" },
+ { "perf", "main" }, },
+ },
+ {
+ 3, { { "perf", "cmd_record" },
+ { "perf", "run_command" },
+ { "perf", "main" }, },
+ },
+ };
+
+ symbol_conf.use_callchain = true;
+ symbol_conf.cumulate_callchain = false;
+
+ setup_sorting();
+ callchain_register_param(&callchain_param);
+
+ err = add_hist_entries(hists, machine);
+ if (err < 0)
+ goto out;
+
+ err = do_test(hists, expected, ARRAY_SIZE(expected),
+ expected_callchain, ARRAY_SIZE(expected_callchain));
+
+out:
+ del_hist_entries(hists);
+ reset_output_field();
+ return err;
+}
+
+/* NO callchain + children */
+static int test3(struct perf_evsel *evsel, struct machine *machine)
+{
+ int err;
+ struct hists *hists = &evsel->hists;
+ /*
+ * expected output:
+ *
+ * Children Self Command Shared Object Symbol
+ * ======== ======== ======= ============= =======================
+ * 70.00% 20.00% perf perf [.] main
+ * 50.00% 0.00% perf perf [.] run_command
+ * 30.00% 10.00% bash bash [.] main
+ * 30.00% 10.00% perf perf [.] cmd_record
+ * 20.00% 0.00% bash libc [.] malloc
+ * 10.00% 10.00% bash [kernel] [k] page_fault
+ * 10.00% 10.00% perf [kernel] [k] schedule
+ * 10.00% 0.00% perf [kernel] [k] sys_perf_event_open
+ * 10.00% 10.00% perf [kernel] [k] page_fault
+ * 10.00% 10.00% perf libc [.] free
+ * 10.00% 10.00% perf libc [.] malloc
+ * 10.00% 10.00% bash bash [.] xmalloc
+ */
+ struct result expected[] = {
+ { 7000, 2000, "perf", "perf", "main" },
+ { 5000, 0, "perf", "perf", "run_command" },
+ { 3000, 1000, "bash", "bash", "main" },
+ { 3000, 1000, "perf", "perf", "cmd_record" },
+ { 2000, 0, "bash", "libc", "malloc" },
+ { 1000, 1000, "bash", "[kernel]", "page_fault" },
+ { 1000, 1000, "perf", "[kernel]", "schedule" },
+ { 1000, 0, "perf", "[kernel]", "sys_perf_event_open" },
+ { 1000, 1000, "perf", "[kernel]", "page_fault" },
+ { 1000, 1000, "perf", "libc", "free" },
+ { 1000, 1000, "perf", "libc", "malloc" },
+ { 1000, 1000, "bash", "bash", "xmalloc" },
+ };
+
+ symbol_conf.use_callchain = false;
+ symbol_conf.cumulate_callchain = true;
+
+ setup_sorting();
+ callchain_register_param(&callchain_param);
+
+ err = add_hist_entries(hists, machine);
+ if (err < 0)
+ goto out;
+
+ err = do_test(hists, expected, ARRAY_SIZE(expected), NULL, 0);
+
+out:
+ del_hist_entries(hists);
+ reset_output_field();
+ return err;
+}
+
+/* callchain + children */
+static int test4(struct perf_evsel *evsel, struct machine *machine)
+{
+ int err;
+ struct hists *hists = &evsel->hists;
+ /*
+ * expected output:
+ *
+ * Children Self Command Shared Object Symbol
+ * ======== ======== ======= ============= =======================
+ * 70.00% 20.00% perf perf [.] main
+ * |
+ * --- main
+ *
+ * 50.00% 0.00% perf perf [.] run_command
+ * |
+ * --- run_command
+ * main
+ *
+ * 30.00% 10.00% bash bash [.] main
+ * |
+ * --- main
+ *
+ * 30.00% 10.00% perf perf [.] cmd_record
+ * |
+ * --- cmd_record
+ * run_command
+ * main
+ *
+ * 20.00% 0.00% bash libc [.] malloc
+ * |
+ * --- malloc
+ * |
+ * |--50.00%-- xmalloc
+ * | main
+ * --50.00%-- main
+ *
+ * 10.00% 10.00% bash [kernel] [k] page_fault
+ * |
+ * --- page_fault
+ * malloc
+ * main
+ *
+ * 10.00% 10.00% perf [kernel] [k] schedule
+ * |
+ * --- schedule
+ * run_command
+ * main
+ *
+ * 10.00% 0.00% perf [kernel] [k] sys_perf_event_open
+ * |
+ * --- sys_perf_event_open
+ * run_command
+ * main
+ *
+ * 10.00% 10.00% perf [kernel] [k] page_fault
+ * |
+ * --- page_fault
+ * sys_perf_event_open
+ * run_command
+ * main
+ *
+ * 10.00% 10.00% perf libc [.] free
+ * |
+ * --- free
+ * cmd_record
+ * run_command
+ * main
+ *
+ * 10.00% 10.00% perf libc [.] malloc
+ * |
+ * --- malloc
+ * cmd_record
+ * run_command
+ * main
+ *
+ * 10.00% 10.00% bash bash [.] xmalloc
+ * |
+ * --- xmalloc
+ * malloc
+ * xmalloc <--- NOTE: there's a cycle
+ * malloc
+ * xmalloc
+ * main
+ *
+ */
+ struct result expected[] = {
+ { 7000, 2000, "perf", "perf", "main" },
+ { 5000, 0, "perf", "perf", "run_command" },
+ { 3000, 1000, "bash", "bash", "main" },
+ { 3000, 1000, "perf", "perf", "cmd_record" },
+ { 2000, 0, "bash", "libc", "malloc" },
+ { 1000, 1000, "bash", "[kernel]", "page_fault" },
+ { 1000, 1000, "perf", "[kernel]", "schedule" },
+ { 1000, 0, "perf", "[kernel]", "sys_perf_event_open" },
+ { 1000, 1000, "perf", "[kernel]", "page_fault" },
+ { 1000, 1000, "perf", "libc", "free" },
+ { 1000, 1000, "perf", "libc", "malloc" },
+ { 1000, 1000, "bash", "bash", "xmalloc" },
+ };
+ struct callchain_result expected_callchain[] = {
+ {
+ 1, { { "perf", "main" }, },
+ },
+ {
+ 2, { { "perf", "run_command" },
+ { "perf", "main" }, },
+ },
+ {
+ 1, { { "bash", "main" }, },
+ },
+ {
+ 3, { { "perf", "cmd_record" },
+ { "perf", "run_command" },
+ { "perf", "main" }, },
+ },
+ {
+ 4, { { "libc", "malloc" },
+ { "bash", "xmalloc" },
+ { "bash", "main" },
+ { "bash", "main" }, },
+ },
+ {
+ 3, { { "[kernel]", "page_fault" },
+ { "libc", "malloc" },
+ { "bash", "main" }, },
+ },
+ {
+ 3, { { "[kernel]", "schedule" },
+ { "perf", "run_command" },
+ { "perf", "main" }, },
+ },
+ {
+ 3, { { "[kernel]", "sys_perf_event_open" },
+ { "perf", "run_command" },
+ { "perf", "main" }, },
+ },
+ {
+ 4, { { "[kernel]", "page_fault" },
+ { "[kernel]", "sys_perf_event_open" },
+ { "perf", "run_command" },
+ { "perf", "main" }, },
+ },
+ {
+ 4, { { "libc", "free" },
+ { "perf", "cmd_record" },
+ { "perf", "run_command" },
+ { "perf", "main" }, },
+ },
+ {
+ 4, { { "libc", "malloc" },
+ { "perf", "cmd_record" },
+ { "perf", "run_command" },
+ { "perf", "main" }, },
+ },
+ {
+ 6, { { "bash", "xmalloc" },
+ { "libc", "malloc" },
+ { "bash", "xmalloc" },
+ { "libc", "malloc" },
+ { "bash", "xmalloc" },
+ { "bash", "main" }, },
+ },
+ };
+
+ symbol_conf.use_callchain = true;
+ symbol_conf.cumulate_callchain = true;
+
+ setup_sorting();
+ callchain_register_param(&callchain_param);
+
+ err = add_hist_entries(hists, machine);
+ if (err < 0)
+ goto out;
+
+ err = do_test(hists, expected, ARRAY_SIZE(expected),
+ expected_callchain, ARRAY_SIZE(expected_callchain));
+
+out:
+ del_hist_entries(hists);
+ reset_output_field();
+ return err;
+}
+
+int test__hists_cumulate(void)
+{
+ int err = TEST_FAIL;
+ struct machines machines;
+ struct machine *machine;
+ struct perf_evsel *evsel;
+ struct perf_evlist *evlist = perf_evlist__new();
+ size_t i;
+ test_fn_t testcases[] = {
+ test1,
+ test2,
+ test3,
+ test4,
+ };
+
+ TEST_ASSERT_VAL("No memory", evlist);
+
+ err = parse_events(evlist, "cpu-clock");
+ if (err)
+ goto out;
+
+ machines__init(&machines);
+
+ /* setup threads/dso/map/symbols also */
+ machine = setup_fake_machine(&machines);
+ if (!machine)
+ goto out;
+
+ if (verbose > 1)
+ machine__fprintf(machine, stderr);
+
+ evsel = perf_evlist__first(evlist);
+
+ for (i = 0; i < ARRAY_SIZE(testcases); i++) {
+ err = testcases[i](evsel, machine);
+ if (err < 0)
+ break;
+ }
+
+out:
+ /* tear down everything */
+ perf_evlist__delete(evlist);
+ machines__exit(&machines);
+
+ return err;
+}
projects / platform / kernel / linux-rpi.git / commitdiff