diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index e96923310d5780e2fe62e45736b2511f43aa907d..46e0c32ad23b4b907efadbccd43856afbd4ec23a 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -397,7 +397,9 @@ LIB_OBJS += $(OUTPUT)tests/rdpmc.o
LIB_OBJS += $(OUTPUT)tests/evsel-roundtrip-name.o
LIB_OBJS += $(OUTPUT)tests/evsel-tp-sched.o
LIB_OBJS += $(OUTPUT)tests/pmu.o
+LIB_OBJS += $(OUTPUT)tests/hists_common.o
LIB_OBJS += $(OUTPUT)tests/hists_link.o
+LIB_OBJS += $(OUTPUT)tests/hists_filter.o
LIB_OBJS += $(OUTPUT)tests/python-use.o
LIB_OBJS += $(OUTPUT)tests/bp_signal.o
LIB_OBJS += $(OUTPUT)tests/bp_signal_overflow.o
@@ -414,6 +416,8 @@ ifeq ($(ARCH),x86)
LIB_OBJS += $(OUTPUT)tests/dwarf-unwind.o
endif
endif
+LIB_OBJS += $(OUTPUT)tests/mmap-thread-lookup.o
+LIB_OBJS += $(OUTPUT)tests/thread-mg-share.o
BUILTIN_OBJS += $(OUTPUT)builtin-annotate.o
BUILTIN_OBJS += $(OUTPUT)builtin-bench.o
diff --git a/tools/perf/arch/x86/tests/dwarf-unwind.c b/tools/perf/arch/x86/tests/dwarf-unwind.c
index b8c0102c70c8d31c5b9b5447480962251455530e..c916656259f7f11f7fe8974b16f0723672c15905 100644
--- a/tools/perf/arch/x86/tests/dwarf-unwind.c
+++ b/tools/perf/arch/x86/tests/dwarf-unwind.c
@@ -23,7 +23,7 @@ static int sample_ustack(struct perf_sample *sample,
sp = (unsigned long) regs[PERF_REG_X86_SP];
- map = map_groups__find(&thread->mg, MAP__FUNCTION, (u64) sp);
+ map = map_groups__find(thread->mg, MAP__FUNCTION, (u64) sp);
if (!map) {
pr_debug("failed to get stack map\n");
free(buf);
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index 5c11ecad02a9623c4324ca4aeefdb6fa1135c9f4..ebdad3376c6728933ba789d02593da5c5ed18a0a 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -15,6 +15,9 @@
#ifndef __NR_futex
# define __NR_futex 240
#endif
+#ifndef __NR_gettid
+# define __NR_gettid 224
+#endif
#endif
#if defined(__x86_64__)
@@ -29,6 +32,9 @@
#ifndef __NR_futex
# define __NR_futex 202
#endif
+#ifndef __NR_gettid
+# define __NR_gettid 186
+#endif
#endif
#ifdef __powerpc__
diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index b11bf8a08430b1c37ea4ac0f70ba2f418986508d..0d5afaf7294457246da68a3cf8e513077cbc001f 100644
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -123,6 +123,18 @@ static struct test {
},
#endif
#endif
+ {
+ .desc = "Test filtering hist entries",
+ .func = test__hists_filter,
+ },
+ {
+ .desc = "Test mmap thread lookup",
+ .func = test__mmap_thread_lookup,
+ },
+ {
+ .desc = "Test thread mg sharing",
+ .func = test__thread_mg_share,
+ },
{
.func = NULL,
},
diff --git a/tools/perf/tests/hists_common.c b/tools/perf/tests/hists_common.c
new file mode 100644
index 0000000000000000000000000000000000000000..44655b395bb9e67a631e4599f29f71a1ddc8e0b0
--- /dev/null
+++ b/tools/perf/tests/hists_common.c
@@ -0,0 +1,148 @@
+#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 "tests/hists_common.h"
+
+static struct {
+ u32 pid;
+ const char *comm;
+} fake_threads[] = {
+ { 100, "perf" },
+ { 200, "perf" },
+ { 300, "bash" },
+};
+
+static struct {
+ u32 pid;
+ u64 start;
+ const char *filename;
+} fake_mmap_info[] = {
+ { 100, 0x40000, "perf" },
+ { 100, 0x50000, "libc" },
+ { 100, 0xf0000, "[kernel]" },
+ { 200, 0x40000, "perf" },
+ { 200, 0x50000, "libc" },
+ { 200, 0xf0000, "[kernel]" },
+ { 300, 0x40000, "bash" },
+ { 300, 0x50000, "libc" },
+ { 300, 0xf0000, "[kernel]" },
+};
+
+struct fake_sym {
+ u64 start;
+ u64 length;
+ const char *name;
+};
+
+static struct fake_sym perf_syms[] = {
+ { 700, 100, "main" },
+ { 800, 100, "run_command" },
+ { 900, 100, "cmd_record" },
+};
+
+static struct fake_sym bash_syms[] = {
+ { 700, 100, "main" },
+ { 800, 100, "xmalloc" },
+ { 900, 100, "xfree" },
+};
+
+static struct fake_sym libc_syms[] = {
+ { 700, 100, "malloc" },
+ { 800, 100, "free" },
+ { 900, 100, "realloc" },
+};
+
+static struct fake_sym kernel_syms[] = {
+ { 700, 100, "schedule" },
+ { 800, 100, "page_fault" },
+ { 900, 100, "sys_perf_event_open" },
+};
+
+static struct {
+ const char *dso_name;
+ struct fake_sym *syms;
+ size_t nr_syms;
+} fake_symbols[] = {
+ { "perf", perf_syms, ARRAY_SIZE(perf_syms) },
+ { "bash", bash_syms, ARRAY_SIZE(bash_syms) },
+ { "libc", libc_syms, ARRAY_SIZE(libc_syms) },
+ { "[kernel]", kernel_syms, ARRAY_SIZE(kernel_syms) },
+};
+
+struct machine *setup_fake_machine(struct machines *machines)
+{
+ struct machine *machine = machines__find(machines, HOST_KERNEL_ID);
+ size_t i;
+
+ if (machine == NULL) {
+ pr_debug("Not enough memory for machine setup\n");
+ return NULL;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(fake_threads); i++) {
+ struct thread *thread;
+
+ thread = machine__findnew_thread(machine, fake_threads[i].pid,
+ fake_threads[i].pid);
+ if (thread == NULL)
+ goto out;
+
+ thread__set_comm(thread, fake_threads[i].comm, 0);
+ }
+
+ for (i = 0; i < ARRAY_SIZE(fake_mmap_info); i++) {
+ union perf_event fake_mmap_event = {
+ .mmap = {
+ .header = { .misc = PERF_RECORD_MISC_USER, },
+ .pid = fake_mmap_info[i].pid,
+ .tid = fake_mmap_info[i].pid,
+ .start = fake_mmap_info[i].start,
+ .len = 0x1000ULL,
+ .pgoff = 0ULL,
+ },
+ };
+
+ strcpy(fake_mmap_event.mmap.filename,
+ fake_mmap_info[i].filename);
+
+ machine__process_mmap_event(machine, &fake_mmap_event, NULL);
+ }
+
+ for (i = 0; i < ARRAY_SIZE(fake_symbols); i++) {
+ size_t k;
+ struct dso *dso;
+
+ dso = __dsos__findnew(&machine->user_dsos,
+ fake_symbols[i].dso_name);
+ if (dso == NULL)
+ goto out;
+
+ /* emulate dso__load() */
+ dso__set_loaded(dso, MAP__FUNCTION);
+
+ for (k = 0; k < fake_symbols[i].nr_syms; k++) {
+ struct symbol *sym;
+ struct fake_sym *fsym = &fake_symbols[i].syms[k];
+
+ sym = symbol__new(fsym->start, fsym->length,
+ STB_GLOBAL, fsym->name);
+ if (sym == NULL)
+ goto out;
+
+ symbols__insert(&dso->symbols[MAP__FUNCTION], sym);
+ }
+ }
+
+ return machine;
+
+out:
+ pr_debug("Not enough memory for machine setup\n");
+ machine__delete_threads(machine);
+ machine__delete(machine);
+ return NULL;
+}
diff --git a/tools/perf/tests/hists_common.h b/tools/perf/tests/hists_common.h
new file mode 100644
index 0000000000000000000000000000000000000000..2528b8fc105a27d645ab5f7539239e8ac6e67700
--- /dev/null
+++ b/tools/perf/tests/hists_common.h
@@ -0,0 +1,44 @@
+#ifndef __PERF_TESTS__HISTS_COMMON_H__
+#define __PERF_TESTS__HISTS_COMMON_H__
+
+struct machine;
+struct machines;
+
+/*
+ * The setup_fake_machine() provides a test environment which consists
+ * of 3 processes that have 3 mappings and in turn, have 3 symbols
+ * respectively. See below table:
+ *
+ * Command: Pid Shared Object Symbol
+ * ............. ............. ...................
+ * perf: 100 perf main
+ * perf: 100 perf run_command
+ * perf: 100 perf comd_record
+ * perf: 100 libc malloc
+ * perf: 100 libc free
+ * perf: 100 libc realloc
+ * perf: 100 [kernel] schedule
+ * perf: 100 [kernel] page_fault
+ * perf: 100 [kernel] sys_perf_event_open
+ * perf: 200 perf main
+ * perf: 200 perf run_command
+ * perf: 200 perf comd_record
+ * perf: 200 libc malloc
+ * perf: 200 libc free
+ * perf: 200 libc realloc
+ * perf: 200 [kernel] schedule
+ * perf: 200 [kernel] page_fault
+ * perf: 200 [kernel] sys_perf_event_open
+ * bash: 300 bash main
+ * bash: 300 bash xmalloc
+ * bash: 300 bash xfree
+ * bash: 300 libc malloc
+ * bash: 300 libc free
+ * bash: 300 libc realloc
+ * bash: 300 [kernel] schedule
+ * bash: 300 [kernel] page_fault
+ * bash: 300 [kernel] sys_perf_event_open
+ */
+struct machine *setup_fake_machine(struct machines *machines);
+
+#endif /* __PERF_TESTS__HISTS_COMMON_H__ */
diff --git a/tools/perf/tests/hists_filter.c b/tools/perf/tests/hists_filter.c
new file mode 100644
index 0000000000000000000000000000000000000000..23dc2f4d12c33270d1802333d6026fc3351bb955
--- /dev/null
+++ b/tools/perf/tests/hists_filter.c
@@ -0,0 +1,315 @@
+#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 = 100, .ip = 0xf0000 + 700, },
+ /* perf [perf] main() */
+ { .pid = 100, .ip = 0x40000 + 700, },
+ /* perf [libc] malloc() */
+ { .pid = 100, .ip = 0x50000 + 700, },
+ /* perf [perf] main() */
+ { .pid = 200, .ip = 0x40000 + 700, }, /* will be merged */
+ /* perf [perf] cmd_record() */
+ { .pid = 200, .ip = 0x40000 + 900, },
+ /* perf [kernel] page_fault() */
+ { .pid = 200, .ip = 0xf0000 + 800, },
+ /* bash [bash] main() */
+ { .pid = 300, .ip = 0x40000 + 700, },
+ /* bash [bash] xmalloc() */
+ { .pid = 300, .ip = 0x40000 + 800, },
+ /* bash [libc] malloc() */
+ { .pid = 300, .ip = 0x50000 + 700, },
+ /* bash [kernel] page_fault() */
+ { .pid = 300, .ip = 0xf0000 + 800, },
+};
+
+static int add_hist_entries(struct perf_evlist *evlist, struct machine *machine)
+{
+ struct perf_evsel *evsel;
+ struct addr_location al;
+ struct hist_entry *he;
+ struct perf_sample sample = { .cpu = 0, };
+ size_t i;
+
+ /*
+ * each evsel will have 10 samples but the 4th sample
+ * (perf [perf] main) will be collapsed to an existing entry
+ * so total 9 entries will be in the tree.
+ */
+ evlist__for_each(evlist, evsel) {
+ for (i = 0; i < ARRAY_SIZE(fake_samples); i++) {
+ const union perf_event event = {
+ .header = {
+ .misc = PERF_RECORD_MISC_USER,
+ },
+ };
+
+ /* make sure it has no filter at first */
+ evsel->hists.thread_filter = NULL;
+ evsel->hists.dso_filter = NULL;
+ evsel->hists.symbol_filter_str = NULL;
+
+ sample.pid = fake_samples[i].pid;
+ sample.ip = fake_samples[i].ip;
+
+ if (perf_event__preprocess_sample(&event, machine, &al,
+ &sample) < 0)
+ goto out;
+
+ he = __hists__add_entry(&evsel->hists, &al, NULL,
+ NULL, NULL, 100, 1, 0);
+ if (he == NULL)
+ goto out;
+
+ fake_samples[i].thread = al.thread;
+ fake_samples[i].map = al.map;
+ fake_samples[i].sym = al.sym;
+
+ hists__inc_nr_events(he->hists, PERF_RECORD_SAMPLE);
+ if (!he->filtered)
+ he->hists->stats.nr_non_filtered_samples++;
+ }
+ }
+
+ return 0;
+
+out:
+ pr_debug("Not enough memory for adding a hist entry\n");
+ return TEST_FAIL;
+}
+
+static void print_hists(struct hists *hists)
+{
+ int i = 0;
+ struct rb_root *root;
+ struct rb_node *node;
+
+ root = &hists->entries;
+
+ pr_info("----- %s --------\n", __func__);
+ node = rb_first(root);
+ while (node) {
+ struct hist_entry *he;
+
+ he = rb_entry(node, struct hist_entry, rb_node);
+
+ if (!he->filtered) {
+ pr_info("%2d: entry: %-8s [%-8s] %20s: period = %"PRIu64"\n",
+ i, thread__comm_str(he->thread),
+ he->ms.map->dso->short_name,
+ he->ms.sym->name, he->stat.period);
+ }
+
+ i++;
+ node = rb_next(node);
+ }
+}
+
+int test__hists_filter(void)
+{
+ int err = TEST_FAIL;
+ struct machines machines;
+ struct machine *machine;
+ struct perf_evsel *evsel;
+ struct perf_evlist *evlist = perf_evlist__new();
+
+ TEST_ASSERT_VAL("No memory", evlist);
+
+ err = parse_events(evlist, "cpu-clock");
+ if (err)
+ goto out;
+ err = parse_events(evlist, "task-clock");
+ if (err)
+ goto out;
+
+ /* default sort order (comm,dso,sym) will be used */
+ if (setup_sorting() < 0)
+ 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);
+
+ /* process sample events */
+ err = add_hist_entries(evlist, machine);
+ if (err < 0)
+ goto out;
+
+ evlist__for_each(evlist, evsel) {
+ struct hists *hists = &evsel->hists;
+
+ hists__collapse_resort(hists, NULL);
+ hists__output_resort(hists);
+
+ if (verbose > 2) {
+ pr_info("Normal histogram\n");
+ print_hists(hists);
+ }
+
+ TEST_ASSERT_VAL("Invalid nr samples",
+ hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
+ TEST_ASSERT_VAL("Invalid nr hist entries",
+ hists->nr_entries == 9);
+ TEST_ASSERT_VAL("Invalid total period",
+ hists->stats.total_period == 1000);
+ TEST_ASSERT_VAL("Unmatched nr samples",
+ hists->stats.nr_events[PERF_RECORD_SAMPLE] ==
+ hists->stats.nr_non_filtered_samples);
+ TEST_ASSERT_VAL("Unmatched nr hist entries",
+ hists->nr_entries == hists->nr_non_filtered_entries);
+ TEST_ASSERT_VAL("Unmatched total period",
+ hists->stats.total_period ==
+ hists->stats.total_non_filtered_period);
+
+ /* now applying thread filter for 'bash' */
+ evsel->hists.thread_filter = fake_samples[9].thread;
+ hists__filter_by_thread(hists);
+
+ if (verbose > 2) {
+ pr_info("Histogram for thread filter\n");
+ print_hists(hists);
+ }
+
+ /* normal stats should be invariant */
+ TEST_ASSERT_VAL("Invalid nr samples",
+ hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
+ TEST_ASSERT_VAL("Invalid nr hist entries",
+ hists->nr_entries == 9);
+ TEST_ASSERT_VAL("Invalid total period",
+ hists->stats.total_period == 1000);
+
+ /* but filter stats are changed */
+ TEST_ASSERT_VAL("Unmatched nr samples for thread filter",
+ hists->stats.nr_non_filtered_samples == 4);
+ TEST_ASSERT_VAL("Unmatched nr hist entries for thread filter",
+ hists->nr_non_filtered_entries == 4);
+ TEST_ASSERT_VAL("Unmatched total period for thread filter",
+ hists->stats.total_non_filtered_period == 400);
+
+ /* remove thread filter first */
+ evsel->hists.thread_filter = NULL;
+ hists__filter_by_thread(hists);
+
+ /* now applying dso filter for 'kernel' */
+ evsel->hists.dso_filter = fake_samples[0].map->dso;
+ hists__filter_by_dso(hists);
+
+ if (verbose > 2) {
+ pr_info("Histogram for dso filter\n");
+ print_hists(hists);
+ }
+
+ /* normal stats should be invariant */
+ TEST_ASSERT_VAL("Invalid nr samples",
+ hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
+ TEST_ASSERT_VAL("Invalid nr hist entries",
+ hists->nr_entries == 9);
+ TEST_ASSERT_VAL("Invalid total period",
+ hists->stats.total_period == 1000);
+
+ /* but filter stats are changed */
+ TEST_ASSERT_VAL("Unmatched nr samples for dso filter",
+ hists->stats.nr_non_filtered_samples == 3);
+ TEST_ASSERT_VAL("Unmatched nr hist entries for dso filter",
+ hists->nr_non_filtered_entries == 3);
+ TEST_ASSERT_VAL("Unmatched total period for dso filter",
+ hists->stats.total_non_filtered_period == 300);
+
+ /* remove dso filter first */
+ evsel->hists.dso_filter = NULL;
+ hists__filter_by_dso(hists);
+
+ /*
+ * now applying symbol filter for 'main'. Also note that
+ * there's 3 samples that have 'main' symbol but the 4th
+ * entry of fake_samples was collapsed already so it won't
+ * be counted as a separate entry but the sample count and
+ * total period will be remained.
+ */
+ evsel->hists.symbol_filter_str = "main";
+ hists__filter_by_symbol(hists);
+
+ if (verbose > 2) {
+ pr_info("Histogram for symbol filter\n");
+ print_hists(hists);
+ }
+
+ /* normal stats should be invariant */
+ TEST_ASSERT_VAL("Invalid nr samples",
+ hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
+ TEST_ASSERT_VAL("Invalid nr hist entries",
+ hists->nr_entries == 9);
+ TEST_ASSERT_VAL("Invalid total period",
+ hists->stats.total_period == 1000);
+
+ /* but filter stats are changed */
+ TEST_ASSERT_VAL("Unmatched nr samples for symbol filter",
+ hists->stats.nr_non_filtered_samples == 3);
+ TEST_ASSERT_VAL("Unmatched nr hist entries for symbol filter",
+ hists->nr_non_filtered_entries == 2);
+ TEST_ASSERT_VAL("Unmatched total period for symbol filter",
+ hists->stats.total_non_filtered_period == 300);
+
+ /* now applying all filters at once. */
+ evsel->hists.thread_filter = fake_samples[1].thread;
+ evsel->hists.dso_filter = fake_samples[1].map->dso;
+ hists__filter_by_thread(hists);
+ hists__filter_by_dso(hists);
+
+ if (verbose > 2) {
+ pr_info("Histogram for all filters\n");
+ print_hists(hists);
+ }
+
+ /* normal stats should be invariant */
+ TEST_ASSERT_VAL("Invalid nr samples",
+ hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
+ TEST_ASSERT_VAL("Invalid nr hist entries",
+ hists->nr_entries == 9);
+ TEST_ASSERT_VAL("Invalid total period",
+ hists->stats.total_period == 1000);
+
+ /* but filter stats are changed */
+ TEST_ASSERT_VAL("Unmatched nr samples for all filter",
+ hists->stats.nr_non_filtered_samples == 2);
+ TEST_ASSERT_VAL("Unmatched nr hist entries for all filter",
+ hists->nr_non_filtered_entries == 1);
+ TEST_ASSERT_VAL("Unmatched total period for all filter",
+ hists->stats.total_non_filtered_period == 200);
+ }
+
+
+ err = TEST_OK;
+
+out:
+ /* tear down everything */
+ perf_evlist__delete(evlist);
+ machines__exit(&machines);
+
+ return err;
+}
diff --git a/tools/perf/tests/hists_link.c b/tools/perf/tests/hists_link.c
index 7ccbc7b6ae775e0c2793e77706a0acfaf86f5a27..e42d6790811afc93640989fd94af8ec094834bf4 100644
--- a/tools/perf/tests/hists_link.c
+++ b/tools/perf/tests/hists_link.c
@@ -8,145 +8,7 @@
#include "machine.h"
#include "thread.h"
#include "parse-events.h"
-
-static struct {
- u32 pid;
- const char *comm;
-} fake_threads[] = {
- { 100, "perf" },
- { 200, "perf" },
- { 300, "bash" },
-};
-
-static struct {
- u32 pid;
- u64 start;
- const char *filename;
-} fake_mmap_info[] = {
- { 100, 0x40000, "perf" },
- { 100, 0x50000, "libc" },
- { 100, 0xf0000, "[kernel]" },
- { 200, 0x40000, "perf" },
- { 200, 0x50000, "libc" },
- { 200, 0xf0000, "[kernel]" },
- { 300, 0x40000, "bash" },
- { 300, 0x50000, "libc" },
- { 300, 0xf0000, "[kernel]" },
-};
-
-struct fake_sym {
- u64 start;
- u64 length;
- const char *name;
-};
-
-static struct fake_sym perf_syms[] = {
- { 700, 100, "main" },
- { 800, 100, "run_command" },
- { 900, 100, "cmd_record" },
-};
-
-static struct fake_sym bash_syms[] = {
- { 700, 100, "main" },
- { 800, 100, "xmalloc" },
- { 900, 100, "xfree" },
-};
-
-static struct fake_sym libc_syms[] = {
- { 700, 100, "malloc" },
- { 800, 100, "free" },
- { 900, 100, "realloc" },
-};
-
-static struct fake_sym kernel_syms[] = {
- { 700, 100, "schedule" },
- { 800, 100, "page_fault" },
- { 900, 100, "sys_perf_event_open" },
-};
-
-static struct {
- const char *dso_name;
- struct fake_sym *syms;
- size_t nr_syms;
-} fake_symbols[] = {
- { "perf", perf_syms, ARRAY_SIZE(perf_syms) },
- { "bash", bash_syms, ARRAY_SIZE(bash_syms) },
- { "libc", libc_syms, ARRAY_SIZE(libc_syms) },
- { "[kernel]", kernel_syms, ARRAY_SIZE(kernel_syms) },
-};
-
-static struct machine *setup_fake_machine(struct machines *machines)
-{
- struct machine *machine = machines__find(machines, HOST_KERNEL_ID);
- size_t i;
-
- if (machine == NULL) {
- pr_debug("Not enough memory for machine setup\n");
- return NULL;
- }
-
- for (i = 0; i < ARRAY_SIZE(fake_threads); i++) {
- struct thread *thread;
-
- thread = machine__findnew_thread(machine, fake_threads[i].pid,
- fake_threads[i].pid);
- if (thread == NULL)
- goto out;
-
- thread__set_comm(thread, fake_threads[i].comm, 0);
- }
-
- for (i = 0; i < ARRAY_SIZE(fake_mmap_info); i++) {
- union perf_event fake_mmap_event = {
- .mmap = {
- .header = { .misc = PERF_RECORD_MISC_USER, },
- .pid = fake_mmap_info[i].pid,
- .tid = fake_mmap_info[i].pid,
- .start = fake_mmap_info[i].start,
- .len = 0x1000ULL,
- .pgoff = 0ULL,
- },
- };
-
- strcpy(fake_mmap_event.mmap.filename,
- fake_mmap_info[i].filename);
-
- machine__process_mmap_event(machine, &fake_mmap_event, NULL);
- }
-
- for (i = 0; i < ARRAY_SIZE(fake_symbols); i++) {
- size_t k;
- struct dso *dso;
-
- dso = __dsos__findnew(&machine->user_dsos,
- fake_symbols[i].dso_name);
- if (dso == NULL)
- goto out;
-
- /* emulate dso__load() */
- dso__set_loaded(dso, MAP__FUNCTION);
-
- for (k = 0; k < fake_symbols[i].nr_syms; k++) {
- struct symbol *sym;
- struct fake_sym *fsym = &fake_symbols[i].syms[k];
-
- sym = symbol__new(fsym->start, fsym->length,
- STB_GLOBAL, fsym->name);
- if (sym == NULL)
- goto out;
-
- symbols__insert(&dso->symbols[MAP__FUNCTION], sym);
- }
- }
-
- return machine;
-
-out:
- pr_debug("Not enough memory for machine setup\n");
- machine__delete_threads(machine);
- machine__delete(machine);
- return NULL;
-}
+#include "hists_common.h"
struct sample {
u32 pid;
@@ -156,6 +18,7 @@ struct sample {
struct symbol *sym;
};
+/* For the numbers, see hists_common.c */
static struct sample fake_common_samples[] = {
/* perf [kernel] schedule() */
{ .pid = 100, .ip = 0xf0000 + 700, },
diff --git a/tools/perf/tests/mmap-thread-lookup.c b/tools/perf/tests/mmap-thread-lookup.c
new file mode 100644
index 0000000000000000000000000000000000000000..4a456fef66ca06ab05cb76ccd9d79b18746ee9f0
--- /dev/null
+++ b/tools/perf/tests/mmap-thread-lookup.c
@@ -0,0 +1,233 @@
+#include <unistd.h>
+#include <sys/syscall.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <pthread.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include "debug.h"
+#include "tests.h"
+#include "machine.h"
+#include "thread_map.h"
+#include "symbol.h"
+#include "thread.h"
+
+#define THREADS 4
+
+static int go_away;
+
+struct thread_data {
+ pthread_t pt;
+ pid_t tid;
+ void *map;
+ int ready[2];
+};
+
+static struct thread_data threads[THREADS];
+
+static int thread_init(struct thread_data *td)
+{
+ void *map;
+
+ map = mmap(NULL, page_size,
+ PROT_READ|PROT_WRITE|PROT_EXEC,
+ MAP_SHARED|MAP_ANONYMOUS, -1, 0);
+
+ if (map == MAP_FAILED) {
+ perror("mmap failed");
+ return -1;
+ }
+
+ td->map = map;
+ td->tid = syscall(SYS_gettid);
+
+ pr_debug("tid = %d, map = %p\n", td->tid, map);
+ return 0;
+}
+
+static void *thread_fn(void *arg)
+{
+ struct thread_data *td = arg;
+ ssize_t ret;
+ int go;
+
+ if (thread_init(td))
+ return NULL;
+
+ /* Signal thread_create thread is initialized. */
+ ret = write(td->ready[1], &go, sizeof(int));
+ if (ret != sizeof(int)) {
+ pr_err("failed to notify\n");
+ return NULL;
+ }
+
+ while (!go_away) {
+ /* Waiting for main thread to kill us. */
+ usleep(100);
+ }
+
+ munmap(td->map, page_size);
+ return NULL;
+}
+
+static int thread_create(int i)
+{
+ struct thread_data *td = &threads[i];
+ int err, go;
+
+ if (pipe(td->ready))
+ return -1;
+
+ err = pthread_create(&td->pt, NULL, thread_fn, td);
+ if (!err) {
+ /* Wait for thread initialization. */
+ ssize_t ret = read(td->ready[0], &go, sizeof(int));
+ err = ret != sizeof(int);
+ }
+
+ close(td->ready[0]);
+ close(td->ready[1]);
+ return err;
+}
+
+static int threads_create(void)
+{
+ struct thread_data *td0 = &threads[0];
+ int i, err = 0;
+
+ go_away = 0;
+
+ /* 0 is main thread */
+ if (thread_init(td0))
+ return -1;
+
+ for (i = 1; !err && i < THREADS; i++)
+ err = thread_create(i);
+
+ return err;
+}
+
+static int threads_destroy(void)
+{
+ struct thread_data *td0 = &threads[0];
+ int i, err = 0;
+
+ /* cleanup the main thread */
+ munmap(td0->map, page_size);
+
+ go_away = 1;
+
+ for (i = 1; !err && i < THREADS; i++)
+ err = pthread_join(threads[i].pt, NULL);
+
+ return err;
+}
+
+typedef int (*synth_cb)(struct machine *machine);
+
+static int synth_all(struct machine *machine)
+{
+ return perf_event__synthesize_threads(NULL,
+ perf_event__process,
+ machine, 0);
+}
+
+static int synth_process(struct machine *machine)
+{
+ struct thread_map *map;
+ int err;
+
+ map = thread_map__new_by_pid(getpid());
+
+ err = perf_event__synthesize_thread_map(NULL, map,
+ perf_event__process,
+ machine, 0);
+
+ thread_map__delete(map);
+ return err;
+}
+
+static int mmap_events(synth_cb synth)
+{
+ struct machines machines;
+ struct machine *machine;
+ int err, i;
+
+ /*
+ * The threads_create will not return before all threads
+ * are spawned and all created memory map.
+ *
+ * They will loop until threads_destroy is called, so we
+ * can safely run synthesizing function.
+ */
+ TEST_ASSERT_VAL("failed to create threads", !threads_create());
+
+ machines__init(&machines);
+ machine = &machines.host;
+
+ dump_trace = verbose > 1 ? 1 : 0;
+
+ err = synth(machine);
+
+ dump_trace = 0;
+
+ TEST_ASSERT_VAL("failed to destroy threads", !threads_destroy());
+ TEST_ASSERT_VAL("failed to synthesize maps", !err);
+
+ /*
+ * All data is synthesized, try to find map for each
+ * thread object.
+ */
+ for (i = 0; i < THREADS; i++) {
+ struct thread_data *td = &threads[i];
+ struct addr_location al;
+ struct thread *thread;
+
+ thread = machine__findnew_thread(machine, getpid(), td->tid);
+
+ pr_debug("looking for map %p\n", td->map);
+
+ thread__find_addr_map(thread, machine,
+ PERF_RECORD_MISC_USER, MAP__FUNCTION,
+ (unsigned long) (td->map + 1), &al);
+
+ if (!al.map) {
+ pr_debug("failed, couldn't find map\n");
+ err = -1;
+ break;
+ }
+
+ pr_debug("map %p, addr %" PRIx64 "\n", al.map, al.map->start);
+ }
+
+ machine__delete_threads(machine);
+ machines__exit(&machines);
+ return err;
+}
+
+/*
+ * This test creates 'THREADS' number of threads (including
+ * main thread) and each thread creates memory map.
+ *
+ * When threads are created, we synthesize them with both
+ * (separate tests):
+ * perf_event__synthesize_thread_map (process based)
+ * perf_event__synthesize_threads (global)
+ *
+ * We test we can find all memory maps via:
+ * thread__find_addr_map
+ *
+ * by using all thread objects.
+ */
+int test__mmap_thread_lookup(void)
+{
+ /* perf_event__synthesize_threads synthesize */
+ TEST_ASSERT_VAL("failed with sythesizing all",
+ !mmap_events(synth_all));
+
+ /* perf_event__synthesize_thread_map synthesize */
+ TEST_ASSERT_VAL("failed with sythesizing process",
+ !mmap_events(synth_process));
+
+ return 0;
+}
diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h
index a24795ca002db3a25742ee324fca6bc6d74e8e14..a9d7cb019f9e3b8845e9002c1c5206e97c150e8f 100644
--- a/tools/perf/tests/tests.h
+++ b/tools/perf/tests/tests.h
@@ -41,6 +41,9 @@ int test__sample_parsing(void);
int test__keep_tracking(void);
int test__parse_no_sample_id_all(void);
int test__dwarf_unwind(void);
+int test__hists_filter(void);
+int test__mmap_thread_lookup(void);
+int test__thread_mg_share(void);
#if defined(__x86_64__) || defined(__i386__)
#ifdef HAVE_DWARF_UNWIND_SUPPORT
diff --git a/tools/perf/tests/thread-mg-share.c b/tools/perf/tests/thread-mg-share.c
new file mode 100644
index 0000000000000000000000000000000000000000..2b2e0dbe114fa17204d86bf9898b675f45367c8b
--- /dev/null
+++ b/tools/perf/tests/thread-mg-share.c
@@ -0,0 +1,90 @@
+#include "tests.h"
+#include "machine.h"
+#include "thread.h"
+#include "map.h"
+
+int test__thread_mg_share(void)
+{
+ struct machines machines;
+ struct machine *machine;
+
+ /* thread group */
+ struct thread *leader;
+ struct thread *t1, *t2, *t3;
+ struct map_groups *mg;
+
+ /* other process */
+ struct thread *other, *other_leader;
+ struct map_groups *other_mg;
+
+ /*
+ * This test create 2 processes abstractions (struct thread)
+ * with several threads and checks they properly share and
+ * maintain map groups info (struct map_groups).
+ *
+ * thread group (pid: 0, tids: 0, 1, 2, 3)
+ * other group (pid: 4, tids: 4, 5)
+ */
+
+ machines__init(&machines);
+ machine = &machines.host;
+
+ /* create process with 4 threads */
+ leader = machine__findnew_thread(machine, 0, 0);
+ t1 = machine__findnew_thread(machine, 0, 1);
+ t2 = machine__findnew_thread(machine, 0, 2);
+ t3 = machine__findnew_thread(machine, 0, 3);
+
+ /* and create 1 separated process, without thread leader */
+ other = machine__findnew_thread(machine, 4, 5);
+
+ TEST_ASSERT_VAL("failed to create threads",
+ leader && t1 && t2 && t3 && other);
+
+ mg = leader->mg;
+ TEST_ASSERT_VAL("wrong refcnt", mg->refcnt == 4);
+
+ /* test the map groups pointer is shared */
+ TEST_ASSERT_VAL("map groups don't match", mg == t1->mg);
+ TEST_ASSERT_VAL("map groups don't match", mg == t2->mg);
+ TEST_ASSERT_VAL("map groups don't match", mg == t3->mg);
+
+ /*
+ * Verify the other leader was created by previous call.
+ * It should have shared map groups with no change in
+ * refcnt.
+ */
+ other_leader = machine__find_thread(machine, 4, 4);
+ TEST_ASSERT_VAL("failed to find other leader", other_leader);
+
+ other_mg = other->mg;
+ TEST_ASSERT_VAL("wrong refcnt", other_mg->refcnt == 2);
+
+ TEST_ASSERT_VAL("map groups don't match", other_mg == other_leader->mg);
+
+ /* release thread group */
+ thread__delete(leader);
+ TEST_ASSERT_VAL("wrong refcnt", mg->refcnt == 3);
+
+ thread__delete(t1);
+ TEST_ASSERT_VAL("wrong refcnt", mg->refcnt == 2);
+
+ thread__delete(t2);
+ TEST_ASSERT_VAL("wrong refcnt", mg->refcnt == 1);
+
+ thread__delete(t3);
+
+ /* release other group */
+ thread__delete(other_leader);
+ TEST_ASSERT_VAL("wrong refcnt", other_mg->refcnt == 1);
+
+ thread__delete(other);
+
+ /*
+ * Cannot call machine__delete_threads(machine) now,
+ * because we've already released all the threads.
+ */
+
+ machines__exit(&machines);
+ return 0;
+}
diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c
index d59893edf03130549079a748ffe17440ab8231a9..9eccf7f4f367d3601c66bb01b7fec00595b45d2a 100644
--- a/tools/perf/ui/stdio/hist.c
+++ b/tools/perf/ui/stdio/hist.c
@@ -495,7 +495,7 @@ size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
break;
if (h->ms.map == NULL && verbose > 1) {
- __map_groups__fprintf_maps(&h->thread->mg,
+ __map_groups__fprintf_maps(h->thread->mg,
MAP__FUNCTION, verbose, fp);
fprintf(fp, "%.10s end\n", graph_dotted_line);
}
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 9d12aa6dd485336104068aef0f3c40f8436d10b2..dbcaea1a81809aad515ba5d603f2803f555db373 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -699,7 +699,7 @@ void thread__find_addr_map(struct thread *thread,
enum map_type type, u64 addr,
struct addr_location *al)
{
- struct map_groups *mg = &thread->mg;
+ struct map_groups *mg = thread->mg;
bool load_map = false;
al->machine = machine;
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index a53cd0b8c151cdb898d3711c36e5081846813a15..98ec56dc890bf50da68dd374d401ebb61923e68c 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -316,6 +316,17 @@ static struct thread *__machine__findnew_thread(struct machine *machine,
rb_link_node(&th->rb_node, parent, p);
rb_insert_color(&th->rb_node, &machine->threads);
machine->last_match = th;
+
+ /*
+ * We have to initialize map_groups separately
+ * after rb tree is updated.
+ *
+ * The reason is that we call machine__findnew_thread
+ * within thread__init_map_groups to find the thread
+ * leader and that would screwed the rb tree.
+ */
+ if (thread__init_map_groups(th, machine))
+ return NULL;
}
return th;
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 39cd2d0faff65667b32738a8788817b6c670cedb..ba5f5c0c838bcface37ec62c37f6728db098269f 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -323,6 +323,7 @@ void map_groups__init(struct map_groups *mg)
INIT_LIST_HEAD(&mg->removed_maps[i]);
}
mg->machine = NULL;
+ mg->refcnt = 1;
}
static void maps__delete(struct rb_root *maps)
@@ -358,6 +359,28 @@ void map_groups__exit(struct map_groups *mg)
}
}
+struct map_groups *map_groups__new(void)
+{
+ struct map_groups *mg = malloc(sizeof(*mg));
+
+ if (mg != NULL)
+ map_groups__init(mg);
+
+ return mg;
+}
+
+void map_groups__delete(struct map_groups *mg)
+{
+ map_groups__exit(mg);
+ free(mg);
+}
+
+void map_groups__put(struct map_groups *mg)
+{
+ if (--mg->refcnt == 0)
+ map_groups__delete(mg);
+}
+
void map_groups__flush(struct map_groups *mg)
{
int type;
diff --git a/tools/perf/util/map.h b/tools/perf/util/map.h
index f00f058afb3b6b510da22c7c04d2f2c4aee3b0e9..d6445b27d672b48cc9b95ab68b9ae92bfdab44c6 100644
--- a/tools/perf/util/map.h
+++ b/tools/perf/util/map.h
@@ -59,8 +59,20 @@ struct map_groups {
struct rb_root maps[MAP__NR_TYPES];
struct list_head removed_maps[MAP__NR_TYPES];
struct machine *machine;
+ int refcnt;
};
+struct map_groups *map_groups__new(void);
+void map_groups__delete(struct map_groups *mg);
+
+static inline struct map_groups *map_groups__get(struct map_groups *mg)
+{
+ ++mg->refcnt;
+ return mg;
+}
+
+void map_groups__put(struct map_groups *mg);
+
static inline struct kmap *map__kmap(struct map *map)
{
return (struct kmap *)(map + 1);
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index 3ce0498bdae60bb24fe558006e1e02b4ed9ba2b9..2fde0d5e40b5f4ef409b1be27197043bbf740a3f 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -8,6 +8,22 @@
#include "debug.h"
#include "comm.h"
+int thread__init_map_groups(struct thread *thread, struct machine *machine)
+{
+ struct thread *leader;
+ pid_t pid = thread->pid_;
+
+ if (pid == thread->tid) {
+ thread->mg = map_groups__new();
+ } else {
+ leader = machine__findnew_thread(machine, pid, pid);
+ if (leader)
+ thread->mg = map_groups__get(leader->mg);
+ }
+
+ return thread->mg ? 0 : -1;
+}
+
struct thread *thread__new(pid_t pid, pid_t tid)
{
char *comm_str;
@@ -15,7 +31,6 @@ struct thread *thread__new(pid_t pid, pid_t tid)
struct thread *thread = zalloc(sizeof(*thread));
if (thread != NULL) {
- map_groups__init(&thread->mg);
thread->pid_ = pid;
thread->tid = tid;
thread->ppid = -1;
@@ -45,7 +60,8 @@ void thread__delete(struct thread *thread)
{
struct comm *comm, *tmp;
- map_groups__exit(&thread->mg);
+ map_groups__put(thread->mg);
+ thread->mg = NULL;
list_for_each_entry_safe(comm, tmp, &thread->comm_list, list) {
list_del(&comm->list);
comm__free(comm);
@@ -111,18 +127,35 @@ int thread__comm_len(struct thread *thread)
size_t thread__fprintf(struct thread *thread, FILE *fp)
{
return fprintf(fp, "Thread %d %s\n", thread->tid, thread__comm_str(thread)) +
- map_groups__fprintf(&thread->mg, verbose, fp);
+ map_groups__fprintf(thread->mg, verbose, fp);
}
void thread__insert_map(struct thread *thread, struct map *map)
{
- map_groups__fixup_overlappings(&thread->mg, map, verbose, stderr);
- map_groups__insert(&thread->mg, map);
+ map_groups__fixup_overlappings(thread->mg, map, verbose, stderr);
+ map_groups__insert(thread->mg, map);
+}
+
+static int thread__clone_map_groups(struct thread *thread,
+ struct thread *parent)
+{
+ int i;
+
+ /* This is new thread, we share map groups for process. */
+ if (thread->pid_ == parent->pid_)
+ return 0;
+
+ /* But this one is new process, copy maps. */
+ for (i = 0; i < MAP__NR_TYPES; ++i)
+ if (map_groups__clone(thread->mg, parent->mg, i) < 0)
+ return -ENOMEM;
+
+ return 0;
}
int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp)
{
- int i, err;
+ int err;
if (parent->comm_set) {
const char *comm = thread__comm_str(parent);
@@ -134,13 +167,8 @@ int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp)
thread->comm_set = true;
}
- for (i = 0; i < MAP__NR_TYPES; ++i)
- if (map_groups__clone(&thread->mg, &parent->mg, i) < 0)
- return -ENOMEM;
-
thread->ppid = parent->tid;
-
- return 0;
+ return thread__clone_map_groups(thread, parent);
}
void thread__find_cpumode_addr_location(struct thread *thread,
diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h
index 9b29f085aedeaa637da7bb25e571c07a19697cd0..3c0c2724f82c718dc02153acaf08b9a46bbac5ce 100644
--- a/tools/perf/util/thread.h
+++ b/tools/perf/util/thread.h
@@ -13,7 +13,7 @@ struct thread {
struct rb_node rb_node;
struct list_head node;
};
- struct map_groups mg;
+ struct map_groups *mg;
pid_t pid_; /* Not all tools update this */
pid_t tid;
pid_t ppid;
@@ -30,6 +30,7 @@ struct machine;
struct comm;
struct thread *thread__new(pid_t pid, pid_t tid);
+int thread__init_map_groups(struct thread *thread, struct machine *machine);
void thread__delete(struct thread *thread);
static inline void thread__exited(struct thread *thread)
{