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Commit 0506aecc authored by Namhyung Kim's avatar Namhyung Kim Committed by Jiri Olsa
Browse files

perf tests: Add a test case for cumulating callchains 



Now it adds a new testcase to verify --children option working
correctly.

Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
Cc: Arun Sharma <asharma@fb.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/r/1401335910-16832-28-git-send-email-namhyung@kernel.org


Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
parent a1891aa4

tools/perf/Makefile.perf

+1 −0
Original line number Diff line number Diff line
@@ -400,6 +400,7 @@ 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/hists_output.o

LIB_OBJS += $(OUTPUT)tests/hists_cumulate.o

LIB_OBJS += $(OUTPUT)tests/python-use.o

LIB_OBJS += $(OUTPUT)tests/bp_signal.o

LIB_OBJS += $(OUTPUT)tests/bp_signal_overflow.o

tools/perf/tests/builtin-test.c

+4 −0
Original line number Diff line number Diff line
@@ -139,6 +139,10 @@ static struct test { 
		.desc = "Test output sorting of hist entries",

		.func = test__hists_output,

	},

	{

		.desc = "Test cumulation of child hist entries",

		.func = test__hists_cumulate,

	},

	{

		.func = NULL,

	},

tools/perf/tests/hists_common.c

+3 −2
Original line number Diff line number Diff line
@@ -196,10 +196,11 @@ void print_hists_out(struct hists *hists) 
		he = rb_entry(node, struct hist_entry, rb_node);



		if (!he->filtered) {

			pr_info("%2d: entry: %8s:%5d [%-8s] %20s: period = %"PRIu64"\n",

			pr_info("%2d: entry: %8s:%5d [%-8s] %20s: period = %"PRIu64"/%"PRIu64"\n",

				i, thread__comm_str(he->thread), he->thread->tid,

				he->ms.map->dso->short_name,

				he->ms.sym->name, he->stat.period);

				he->ms.sym->name, he->stat.period,

				he->stat_acc ? he->stat_acc->period : 0);

		}



		i++;

tools/perf/tests/hists_cumulate.c

0 → 100644
+726 −0
Original line number Diff line number Diff line 
#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;

}

tools/perf/tests/tests.h

+1 −0
Original line number Diff line number Diff line
@@ -45,6 +45,7 @@ int test__hists_filter(void); 
int test__mmap_thread_lookup(void);

int test__thread_mg_share(void);

int test__hists_output(void);

int test__hists_cumulate(void);



#if defined(__x86_64__) || defined(__i386__) || defined(__arm__)

#ifdef HAVE_DWARF_UNWIND_SUPPORT