#include <linux/compiler.h>
#include "event.h"
#include "tests.h"
#include "stat.h"
#include "counts.h"
#include "debug.h"

static bool has_term(struct stat_config_event *config,
		     u64 tag, u64 val)
{
	unsigned i;

	for (i = 0; i < config->nr; i++) {
		if ((config->data[i].tag == tag) &&
		    (config->data[i].val == val))
			return true;
	}

	return false;
}

static int process_stat_config_event(struct perf_tool *tool __maybe_unused,
				     union perf_event *event,
				     struct perf_sample *sample __maybe_unused,
				     struct machine *machine __maybe_unused)
{
	struct stat_config_event *config = &event->stat_config;
	struct perf_stat_config stat_config;

#define HAS(term, val) \
	has_term(config, PERF_STAT_CONFIG_TERM__##term, val)

	TEST_ASSERT_VAL("wrong nr",        config->nr == PERF_STAT_CONFIG_TERM__MAX);
	TEST_ASSERT_VAL("wrong aggr_mode", HAS(AGGR_MODE, AGGR_CORE));
	TEST_ASSERT_VAL("wrong scale",     HAS(SCALE, 1));
	TEST_ASSERT_VAL("wrong interval",  HAS(INTERVAL, 1));

#undef HAS

	perf_event__read_stat_config(&stat_config, config);

	TEST_ASSERT_VAL("wrong aggr_mode", stat_config.aggr_mode == AGGR_CORE);
	TEST_ASSERT_VAL("wrong scale",     stat_config.scale == 1);
	TEST_ASSERT_VAL("wrong interval",  stat_config.interval == 1);
	return 0;
}

int test__synthesize_stat_config(int subtest __maybe_unused)
{
	struct perf_stat_config stat_config = {
		.aggr_mode	= AGGR_CORE,
		.scale		= 1,
		.interval	= 1,
	};

	TEST_ASSERT_VAL("failed to synthesize stat_config",
		!perf_event__synthesize_stat_config(NULL, &stat_config, process_stat_config_event, NULL));

	return 0;
}

static int process_stat_event(struct perf_tool *tool __maybe_unused,
			      union perf_event *event,
			      struct perf_sample *sample __maybe_unused,
			      struct machine *machine __maybe_unused)
{
	struct stat_event *st = &event->stat;

	TEST_ASSERT_VAL("wrong cpu",    st->cpu    == 1);
	TEST_ASSERT_VAL("wrong thread", st->thread == 2);
	TEST_ASSERT_VAL("wrong id",     st->id     == 3);
	TEST_ASSERT_VAL("wrong val",    st->val    == 100);
	TEST_ASSERT_VAL("wrong run",    st->ena    == 200);
	TEST_ASSERT_VAL("wrong ena",    st->run    == 300);
	return 0;
}

int test__synthesize_stat(int subtest __maybe_unused)
{
	struct perf_counts_values count;

	count.val = 100;
	count.ena = 200;
	count.run = 300;

	TEST_ASSERT_VAL("failed to synthesize stat_config",
		!perf_event__synthesize_stat(NULL, 1, 2, 3, &count, process_stat_event, NULL));

	return 0;
}

static int process_stat_round_event(struct perf_tool *tool __maybe_unused,
				    union perf_event *event,
				    struct perf_sample *sample __maybe_unused,
				    struct machine *machine __maybe_unused)
{
	struct stat_round_event *stat_round = &event->stat_round;

	TEST_ASSERT_VAL("wrong time", stat_round->time == 0xdeadbeef);
	TEST_ASSERT_VAL("wrong type", stat_round->type == PERF_STAT_ROUND_TYPE__INTERVAL);
	return 0;
}

int test__synthesize_stat_round(int subtest __maybe_unused)
{
	TEST_ASSERT_VAL("failed to synthesize stat_config",
		!perf_event__synthesize_stat_round(NULL, 0xdeadbeef, PERF_STAT_ROUND_TYPE__INTERVAL,
						   process_stat_round_event, NULL));

	return 0;
}
rl?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>pinctrl</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/pinctrl/dra.h?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>dra.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='07cd12945551b63ecb1a349d50a6d69d1d6feb4a'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Tejun Heo &lt;tj@kernel.org&gt;</td><td class='right'>2017-01-26 16:47:28 -0500</td></tr>
<tr><th>committer</th><td>Tejun Heo &lt;tj@kernel.org&gt;</td><td class='right'>2017-01-26 16:47:28 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/pinctrl/dra.h?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>07cd12945551b63ecb1a349d50a6d69d1d6feb4a</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/dt-bindings/pinctrl/dra.h?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>75f65eba7eac9277971082a2d5a4cf1370562c0c</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/dt-bindings/pinctrl/dra.h?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>include/dt-bindings/pinctrl/dra.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/pinctrl/dra.h?id=7ce7d89f48834cefece7804d38fc5d85382edf77'>7ce7d89f48834cefece7804d38fc5d85382edf77</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/dt-bindings/pinctrl/dra.h?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a&amp;id2=7ce7d89f48834cefece7804d38fc5d85382edf77'>diff</a>)</td></tr></table>
<div class='commit-subject'>cgroup: don't online subsystems before cgroup_name/path() are operational</div><div class='commit-msg'>While refactoring cgroup creation, a5bca2152036 ("cgroup: factor out
cgroup_create() out of cgroup_mkdir()") incorrectly onlined subsystems
before the new cgroup is associated with it kernfs_node.  This is fine
for cgroup proper but cgroup_name/path() depend on the associated
kernfs_node and if a subsystem makes the new cgroup_subsys_state
visible, which they're allowed to after onlining, it can lead to NULL
dereference.

The current code performs cgroup creation and subsystem onlining in
cgroup_create() and cgroup_mkdir() makes the cgroup and subsystems
visible afterwards.  There's no reason to online the subsystems early
and we can simply drop cgroup_apply_control_enable() call from
cgroup_create() so that the subsystems are onlined and made visible at
the same time.

Signed-off-by: Tejun Heo &lt;tj@kernel.org&gt;
Reported-by: Konstantin Khlebnikov &lt;khlebnikov@yandex-team.ru&gt;
Fixes: a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()") 
Cc: stable@vger.kernel.org # v4.6+
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>Diffstat</a> (limited to 'include/dt-bindings/pinctrl/dra.h')</div><table summary='diffstat' class='diffstat'>