rcutorture.c (622be33fcbc93e9b672b99ed338369eb5e843ac3) rcutorture.c (4babd855fd6137f9792117eb73b096c221a49d3c)
1/*
2 * Read-Copy Update module-based torture test facility
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *

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1782 barrier_cbs_tasks = NULL;
1783 }
1784 if (barrier_cbs_wq != NULL) {
1785 kfree(barrier_cbs_wq);
1786 barrier_cbs_wq = NULL;
1787 }
1788}
1789
1/*
2 * Read-Copy Update module-based torture test facility
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *

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1782 barrier_cbs_tasks = NULL;
1783 }
1784 if (barrier_cbs_wq != NULL) {
1785 kfree(barrier_cbs_wq);
1786 barrier_cbs_wq = NULL;
1787 }
1788}
1789
1790static bool rcu_torture_can_boost(void)
1791{
1792 static int boost_warn_once;
1793 int prio;
1794
1795 if (!(test_boost == 1 && cur_ops->can_boost) && test_boost != 2)
1796 return false;
1797
1798 prio = rcu_get_gp_kthreads_prio();
1799 if (!prio)
1800 return false;
1801
1802 if (prio < 2) {
1803 if (boost_warn_once == 1)
1804 return false;
1805
1806 pr_alert("%s: WARN: RCU kthread priority too low to test boosting. "
1807 "Skipping RCU boost test. Try passing rcutree.kthread_prio > 1 "
1808 "on the kernel command line.\n", KBUILD_MODNAME);
1809 boost_warn_once = 1;
1810 return false;
1811 }
1812
1813 return true;
1814}
1815
1790static enum cpuhp_state rcutor_hp;
1791
1792static void
1793rcu_torture_cleanup(void)
1794{
1795 int flags = 0;
1796 unsigned long gp_seq = 0;
1797 int i;

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1826 rcutorture_get_gp_data(cur_ops->ttype, &flags, &gp_seq);
1827 srcutorture_get_gp_data(cur_ops->ttype, srcu_ctlp, &flags, &gp_seq);
1828 pr_alert("%s: End-test grace-period state: g%lu f%#x\n",
1829 cur_ops->name, gp_seq, flags);
1830 torture_stop_kthread(rcu_torture_stats, stats_task);
1831 torture_stop_kthread(rcu_torture_fqs, fqs_task);
1832 for (i = 0; i < ncbflooders; i++)
1833 torture_stop_kthread(rcu_torture_cbflood, cbflood_task[i]);
1816static enum cpuhp_state rcutor_hp;
1817
1818static void
1819rcu_torture_cleanup(void)
1820{
1821 int flags = 0;
1822 unsigned long gp_seq = 0;
1823 int i;

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1852 rcutorture_get_gp_data(cur_ops->ttype, &flags, &gp_seq);
1853 srcutorture_get_gp_data(cur_ops->ttype, srcu_ctlp, &flags, &gp_seq);
1854 pr_alert("%s: End-test grace-period state: g%lu f%#x\n",
1855 cur_ops->name, gp_seq, flags);
1856 torture_stop_kthread(rcu_torture_stats, stats_task);
1857 torture_stop_kthread(rcu_torture_fqs, fqs_task);
1858 for (i = 0; i < ncbflooders; i++)
1859 torture_stop_kthread(rcu_torture_cbflood, cbflood_task[i]);
1834 if ((test_boost == 1 && cur_ops->can_boost) ||
1835 test_boost == 2)
1860 if (rcu_torture_can_boost())
1836 cpuhp_remove_state(rcutor_hp);
1837
1838 /*
1839 * Wait for all RCU callbacks to fire, then do flavor-specific
1840 * cleanup operations.
1841 */
1842 if (cur_ops->cb_barrier != NULL)
1843 cur_ops->cb_barrier();

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2051 fqs_task);
2052 if (firsterr)
2053 goto unwind;
2054 }
2055 if (test_boost_interval < 1)
2056 test_boost_interval = 1;
2057 if (test_boost_duration < 2)
2058 test_boost_duration = 2;
1861 cpuhp_remove_state(rcutor_hp);
1862
1863 /*
1864 * Wait for all RCU callbacks to fire, then do flavor-specific
1865 * cleanup operations.
1866 */
1867 if (cur_ops->cb_barrier != NULL)
1868 cur_ops->cb_barrier();

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2076 fqs_task);
2077 if (firsterr)
2078 goto unwind;
2079 }
2080 if (test_boost_interval < 1)
2081 test_boost_interval = 1;
2082 if (test_boost_duration < 2)
2083 test_boost_duration = 2;
2059 if ((test_boost == 1 && cur_ops->can_boost) ||
2060 test_boost == 2) {
2084 if (rcu_torture_can_boost()) {
2061
2062 boost_starttime = jiffies + test_boost_interval * HZ;
2063
2064 firsterr = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "RCU_TORTURE",
2065 rcutorture_booster_init,
2066 rcutorture_booster_cleanup);
2067 if (firsterr < 0)
2068 goto unwind;

--- 45 unchanged lines hidden --- 		2085
2086 boost_starttime = jiffies + test_boost_interval * HZ;
2087
2088 firsterr = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "RCU_TORTURE",
2089 rcutorture_booster_init,
2090 rcutorture_booster_cleanup);
2091 if (firsterr < 0)
2092 goto unwind;

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