[kbuild-all] [mel:mm-percpu-local_lock-v4r4 22/29] mm/vmstat.c:1793:5: error: section attribute cannot be specified for local variables

tree: https://git.kernel.org/pub/scm/linux/kernel/git/mel/linux.git mm-percpu-local_lock-v4r4 head: 85d43239ceaed47c1a4e646aba1ebc09ad46734e commit: c1617f38ab5c8401a4d5c6288c59aaf02e2a6788 [22/29] mm/vmstat: Convert NUMA statistics to basic NUMA counters config: parisc-randconfig-r015-20210419 (attached as .config) compiler: hppa-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://git.kernel.org/pub/scm/linux/kernel/git/mel/linux.git/commit/?id=... git remote add mel https://git.kernel.org/pub/scm/linux/kernel/git/mel/linux.git git fetch --no-tags mel mm-percpu-local_lock-v4r4 git checkout c1617f38ab5c8401a4d5c6288c59aaf02e2a6788 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=parisc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All error/warnings (new ones prefixed by >>): mm/vmstat.c: In function 'refresh_cpu_vm_stats': mm/vmstat.c:781:34: warning: unused variable 'pcp' [-Wunused-variable] 781 | struct per_cpu_pages __percpu *pcp = zone->per_cpu_pageset; | ^~~ mm/vmstat.c: In function 'cpu_vm_stats_fold': 913 | void drain_zonestat(struct zone *zone, struct per_cpu_zonestat *pzstats) | ^~~~ 1793 | int sysctl_stat_interval __read_mostly = HZ; | ^~~~~~~~~~~~~~~~~~~~ 1841 | static void vmstat_update(struct work_struct *w) | ^~~~~~~~~~~~~ 1864 | static bool need_update(int cpu) | ^~~~~~~~~~~ 1922 | static void vmstat_shepherd(struct work_struct *w); | ^~~~~~~~~~~~~~~ In file included from include/linux/mm_types.h:16, from include/linux/mmzone.h:21, from include/linux/gfp.h:6, from include/linux/xarray.h:14, from include/linux/radix-tree.h:19, from include/linux/fs.h:15, from mm/vmstat.c:13: 1924 | static DECLARE_DEFERRABLE_WORK(shepherd, vmstat_shepherd); | ^~~~~~~~~~~~~~~ include/linux/workqueue.h:187:11: note: in definition of macro '__WORK_INITIALIZER' 187 | .func = (f), \ | ^ include/linux/workqueue.h:204:26: note: in expansion of macro '__DELAYED_WORK_INITIALIZER' 204 | struct delayed_work n = __DELAYED_WORK_INITIALIZER(n, f, TIMER_DEFERRABLE) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ mm/vmstat.c:1924:8: note: in expansion of macro 'DECLARE_DEFERRABLE_WORK' 1924 | static DECLARE_DEFERRABLE_WORK(shepherd, vmstat_shepherd); | ^~~~~~~~~~~~~~~~~~~~~~~ mm/vmstat.c:1924:42: note: each undeclared identifier is reported only once for each function it appears in 1924 | static DECLARE_DEFERRABLE_WORK(shepherd, vmstat_shepherd); | ^~~~~~~~~~~~~~~ include/linux/workqueue.h:187:11: note: in definition of macro '__WORK_INITIALIZER' 187 | .func = (f), \ | ^ include/linux/workqueue.h:204:26: note: in expansion of macro '__DELAYED_WORK_INITIALIZER' 204 | struct delayed_work n = __DELAYED_WORK_INITIALIZER(n, f, TIMER_DEFERRABLE) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ mm/vmstat.c:1924:8: note: in expansion of macro 'DECLARE_DEFERRABLE_WORK' 1924 | static DECLARE_DEFERRABLE_WORK(shepherd, vmstat_shepherd); | ^~~~~~~~~~~~~~~~~~~~~~~ mm/vmstat.c:1926:13: error: invalid storage class for function 'vmstat_shepherd' 1926 | static void vmstat_shepherd(struct work_struct *w) | ^~~~~~~~~~~~~~~ 1946 | static void __init start_shepherd_timer(void) | ^~~~~~~~~~~~~~~~~~~~ 1958 | static void __init init_cpu_node_state(void) | ^~~~~~~~~~~~~~~~~~~ 1968 | static int vmstat_cpu_online(unsigned int cpu) | ^~~~~~~~~~~~~~~~~ 1975 | static int vmstat_cpu_down_prep(unsigned int cpu) | ^~~~~~~~~~~~~~~~~~~~ 1981 | static int vmstat_cpu_dead(unsigned int cpu) | ^~~~~~~~~~~~~~~ 2031 | } | ^ 1999 | struct workqueue_struct *mm_percpu_wq; | ^~~~~~~~~~~~ mm/vmstat.c:1126:20: warning: unused variable 'vmstat_text' [-Wunused-variable] 1126 | const char * const vmstat_text[] = { | ^~~~~~~~~~~ At top level: mm/vmstat.c:1126:20: warning: 'vmstat_text' defined but not used [-Wunused-const-variable=] mm/vmstat.c:2001:13: warning: 'init_mm_internals' defined but not used [-Wunused-function] 2001 | void __init init_mm_internals(void) | ^~~~~~~~~~~~~~~~~ mm/vmstat.c:1926:13: warning: 'vmstat_shepherd' defined but not used [-Wunused-function] 1926 | static void vmstat_shepherd(struct work_struct *w) | ^~~~~~~~~~~~~~~ mm/vmstat.c:1896:6: warning: 'quiet_vmstat' defined but not used [-Wunused-function] 1896 | void quiet_vmstat(void) | ^~~~~~~~~~~~ mm/vmstat.c:913:6: warning: 'drain_zonestat' defined but not used [-Wunused-function] 913 | void drain_zonestat(struct zone *zone, struct per_cpu_zonestat *pzstats) | ^~~~~~~~~~~~~~ vim +1793 mm/vmstat.c f6ac2354d79119 Christoph Lameter 2006-06-30 1790 df9ecaba3f152d Christoph Lameter 2006-08-31 1791 #ifdef CONFIG_SMP d1187ed21026fd Christoph Lameter 2007-05-09 1792 static DEFINE_PER_CPU(struct delayed_work, vmstat_work); 77461ab33229d4 Christoph Lameter 2007-05-09 @1793 int sysctl_stat_interval __read_mostly = HZ; d1187ed21026fd Christoph Lameter 2007-05-09 1794 52b6f46bc163ee Hugh Dickins 2016-05-19 1795 #ifdef CONFIG_PROC_FS 52b6f46bc163ee Hugh Dickins 2016-05-19 1796 static void refresh_vm_stats(struct work_struct *work) 52b6f46bc163ee Hugh Dickins 2016-05-19 1797 { 52b6f46bc163ee Hugh Dickins 2016-05-19 1798 refresh_cpu_vm_stats(true); 52b6f46bc163ee Hugh Dickins 2016-05-19 1799 } 52b6f46bc163ee Hugh Dickins 2016-05-19 1800 52b6f46bc163ee Hugh Dickins 2016-05-19 1801 int vmstat_refresh(struct ctl_table *table, int write, 32927393dc1ccd Christoph Hellwig 2020-04-24 1802 void *buffer, size_t *lenp, loff_t *ppos) 52b6f46bc163ee Hugh Dickins 2016-05-19 1803 { 52b6f46bc163ee Hugh Dickins 2016-05-19 1804 long val; 52b6f46bc163ee Hugh Dickins 2016-05-19 1805 int err; 52b6f46bc163ee Hugh Dickins 2016-05-19 1806 int i; 52b6f46bc163ee Hugh Dickins 2016-05-19 1807 52b6f46bc163ee Hugh Dickins 2016-05-19 1808 /* 52b6f46bc163ee Hugh Dickins 2016-05-19 1809 * The regular update, every sysctl_stat_interval, may come later 52b6f46bc163ee Hugh Dickins 2016-05-19 1810 * than expected: leaving a significant amount in per_cpu buckets. 52b6f46bc163ee Hugh Dickins 2016-05-19 1811 * This is particularly misleading when checking a quantity of HUGE 52b6f46bc163ee Hugh Dickins 2016-05-19 1812 * pages, immediately after running a test. /proc/sys/vm/stat_refresh, 52b6f46bc163ee Hugh Dickins 2016-05-19 1813 * which can equally be echo'ed to or cat'ted from (by root), 52b6f46bc163ee Hugh Dickins 2016-05-19 1814 * can be used to update the stats just before reading them. 52b6f46bc163ee Hugh Dickins 2016-05-19 1815 * c41f012ade0b95 Michal Hocko 2017-09-06 1816 * Oh, and since global_zone_page_state() etc. are so careful to hide 52b6f46bc163ee Hugh Dickins 2016-05-19 1817 * transiently negative values, report an error here if any of 52b6f46bc163ee Hugh Dickins 2016-05-19 1818 * the stats is negative, so we know to go looking for imbalance. 52b6f46bc163ee Hugh Dickins 2016-05-19 1819 */ 52b6f46bc163ee Hugh Dickins 2016-05-19 1820 err = schedule_on_each_cpu(refresh_vm_stats); 52b6f46bc163ee Hugh Dickins 2016-05-19 1821 if (err) 52b6f46bc163ee Hugh Dickins 2016-05-19 1822 return err; 52b6f46bc163ee Hugh Dickins 2016-05-19 1823 for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++) { 75ef7184053989 Mel Gorman 2016-07-28 1824 val = atomic_long_read(&vm_zone_stat[i]); 52b6f46bc163ee Hugh Dickins 2016-05-19 1825 if (val < 0) { 52b6f46bc163ee Hugh Dickins 2016-05-19 1826 pr_warn("%s: %s %ld\n", 9d7ea9a297e644 Konstantin Khlebnikov 2019-12-04 1827 __func__, zone_stat_name(i), val); 52b6f46bc163ee Hugh Dickins 2016-05-19 1828 err = -EINVAL; 52b6f46bc163ee Hugh Dickins 2016-05-19 1829 } 52b6f46bc163ee Hugh Dickins 2016-05-19 1830 } 52b6f46bc163ee Hugh Dickins 2016-05-19 1831 if (err) 52b6f46bc163ee Hugh Dickins 2016-05-19 1832 return err; 52b6f46bc163ee Hugh Dickins 2016-05-19 1833 if (write) 52b6f46bc163ee Hugh Dickins 2016-05-19 1834 *ppos += *lenp; 52b6f46bc163ee Hugh Dickins 2016-05-19 1835 else 52b6f46bc163ee Hugh Dickins 2016-05-19 1836 *lenp = 0; 52b6f46bc163ee Hugh Dickins 2016-05-19 1837 return 0; 52b6f46bc163ee Hugh Dickins 2016-05-19 1838 } 52b6f46bc163ee Hugh Dickins 2016-05-19 1839 #endif /* CONFIG_PROC_FS */ 52b6f46bc163ee Hugh Dickins 2016-05-19 1840 d1187ed21026fd Christoph Lameter 2007-05-09 @1841 static void vmstat_update(struct work_struct *w) d1187ed21026fd Christoph Lameter 2007-05-09 1842 { 0eb77e98803219 Christoph Lameter 2016-01-14 1843 if (refresh_cpu_vm_stats(true)) { 7cc36bbddde5cd Christoph Lameter 2014-10-09 1844 /* 7cc36bbddde5cd Christoph Lameter 2014-10-09 1845 * Counters were updated so we expect more updates 7cc36bbddde5cd Christoph Lameter 2014-10-09 1846 * to occur in the future. Keep on running the 7cc36bbddde5cd Christoph Lameter 2014-10-09 1847 * update worker thread. 7cc36bbddde5cd Christoph Lameter 2014-10-09 1848 */ ce612879ddc78e Michal Hocko 2017-04-07 1849 queue_delayed_work_on(smp_processor_id(), mm_percpu_wq, 176bed1de5bf97 Linus Torvalds 2015-10-15 1850 this_cpu_ptr(&vmstat_work), 98f4ebb290a7dc Anton Blanchard 2009-04-02 1851 round_jiffies_relative(sysctl_stat_interval)); f01f17d3705bb6 Michal Hocko 2016-02-05 1852 } 7cc36bbddde5cd Christoph Lameter 2014-10-09 1853 } 7cc36bbddde5cd Christoph Lameter 2014-10-09 1854 0eb77e98803219 Christoph Lameter 2016-01-14 1855 /* 0eb77e98803219 Christoph Lameter 2016-01-14 1856 * Switch off vmstat processing and then fold all the remaining differentials 0eb77e98803219 Christoph Lameter 2016-01-14 1857 * until the diffs stay at zero. The function is used by NOHZ and can only be 0eb77e98803219 Christoph Lameter 2016-01-14 1858 * invoked when tick processing is not active. 0eb77e98803219 Christoph Lameter 2016-01-14 1859 */ 7cc36bbddde5cd Christoph Lameter 2014-10-09 1860 /* 7cc36bbddde5cd Christoph Lameter 2014-10-09 1861 * Check if the diffs for a certain cpu indicate that 7cc36bbddde5cd Christoph Lameter 2014-10-09 1862 * an update is needed. 7cc36bbddde5cd Christoph Lameter 2014-10-09 1863 */ 7cc36bbddde5cd Christoph Lameter 2014-10-09 @1864 static bool need_update(int cpu) 7cc36bbddde5cd Christoph Lameter 2014-10-09 1865 { 2bbd00aef0671b Johannes Weiner 2021-02-25 1866 pg_data_t *last_pgdat = NULL; 7cc36bbddde5cd Christoph Lameter 2014-10-09 1867 struct zone *zone; 7cc36bbddde5cd Christoph Lameter 2014-10-09 1868 7cc36bbddde5cd Christoph Lameter 2014-10-09 1869 for_each_populated_zone(zone) { 6d2c7ce5a47d4e Mel Gorman 2021-01-19 1870 struct per_cpu_zonestat *pzstats = per_cpu_ptr(zone->per_cpu_zonestats, cpu); 2bbd00aef0671b Johannes Weiner 2021-02-25 1871 struct per_cpu_nodestat *n; 6d2c7ce5a47d4e Mel Gorman 2021-01-19 1872 7cc36bbddde5cd Christoph Lameter 2014-10-09 1873 /* 7cc36bbddde5cd Christoph Lameter 2014-10-09 1874 * The fast way of checking if there are any vmstat diffs. 7cc36bbddde5cd Christoph Lameter 2014-10-09 1875 */ 6d2c7ce5a47d4e Mel Gorman 2021-01-19 1876 if (memchr_inv(pzstats->vm_stat_diff, 0, NR_VM_ZONE_STAT_ITEMS * 6d2c7ce5a47d4e Mel Gorman 2021-01-19 1877 sizeof(pzstats->vm_stat_diff[0]))) 7cc36bbddde5cd Christoph Lameter 2014-10-09 1878 return true; c1617f38ab5c84 Mel Gorman 2021-02-24 1879 2bbd00aef0671b Johannes Weiner 2021-02-25 1880 if (last_pgdat == zone->zone_pgdat) 2bbd00aef0671b Johannes Weiner 2021-02-25 1881 continue; 2bbd00aef0671b Johannes Weiner 2021-02-25 1882 last_pgdat = zone->zone_pgdat; 2bbd00aef0671b Johannes Weiner 2021-02-25 1883 n = per_cpu_ptr(zone->zone_pgdat->per_cpu_nodestats, cpu); 2bbd00aef0671b Johannes Weiner 2021-02-25 1884 if (memchr_inv(n->vm_node_stat_diff, 0, NR_VM_NODE_STAT_ITEMS * 2bbd00aef0671b Johannes Weiner 2021-02-25 1885 sizeof(n->vm_node_stat_diff[0]))) 2bbd00aef0671b Johannes Weiner 2021-02-25 1886 return true; 7cc36bbddde5cd Christoph Lameter 2014-10-09 1887 } 7cc36bbddde5cd Christoph Lameter 2014-10-09 1888 return false; 7cc36bbddde5cd Christoph Lameter 2014-10-09 1889 } 7cc36bbddde5cd Christoph Lameter 2014-10-09 1890 7b8da4c7f07774 Christoph Lameter 2016-05-20 1891 /* 7b8da4c7f07774 Christoph Lameter 2016-05-20 1892 * Switch off vmstat processing and then fold all the remaining differentials 7b8da4c7f07774 Christoph Lameter 2016-05-20 1893 * until the diffs stay at zero. The function is used by NOHZ and can only be 7b8da4c7f07774 Christoph Lameter 2016-05-20 1894 * invoked when tick processing is not active. 7b8da4c7f07774 Christoph Lameter 2016-05-20 1895 */ f01f17d3705bb6 Michal Hocko 2016-02-05 1896 void quiet_vmstat(void) f01f17d3705bb6 Michal Hocko 2016-02-05 1897 { f01f17d3705bb6 Michal Hocko 2016-02-05 1898 if (system_state != SYSTEM_RUNNING) f01f17d3705bb6 Michal Hocko 2016-02-05 1899 return; f01f17d3705bb6 Michal Hocko 2016-02-05 1900 7b8da4c7f07774 Christoph Lameter 2016-05-20 1901 if (!delayed_work_pending(this_cpu_ptr(&vmstat_work))) f01f17d3705bb6 Michal Hocko 2016-02-05 1902 return; f01f17d3705bb6 Michal Hocko 2016-02-05 1903 f01f17d3705bb6 Michal Hocko 2016-02-05 1904 if (!need_update(smp_processor_id())) f01f17d3705bb6 Michal Hocko 2016-02-05 1905 return; f01f17d3705bb6 Michal Hocko 2016-02-05 1906 f01f17d3705bb6 Michal Hocko 2016-02-05 1907 /* f01f17d3705bb6 Michal Hocko 2016-02-05 1908 * Just refresh counters and do not care about the pending delayed f01f17d3705bb6 Michal Hocko 2016-02-05 1909 * vmstat_update. It doesn't fire that often to matter and canceling f01f17d3705bb6 Michal Hocko 2016-02-05 1910 * it would be too expensive from this path. f01f17d3705bb6 Michal Hocko 2016-02-05 1911 * vmstat_shepherd will take care about that for us. f01f17d3705bb6 Michal Hocko 2016-02-05 1912 */ f01f17d3705bb6 Michal Hocko 2016-02-05 1913 refresh_cpu_vm_stats(false); f01f17d3705bb6 Michal Hocko 2016-02-05 1914 } f01f17d3705bb6 Michal Hocko 2016-02-05 1915 7cc36bbddde5cd Christoph Lameter 2014-10-09 1916 /* 7cc36bbddde5cd Christoph Lameter 2014-10-09 1917 * Shepherd worker thread that checks the 7cc36bbddde5cd Christoph Lameter 2014-10-09 1918 * differentials of processors that have their worker 7cc36bbddde5cd Christoph Lameter 2014-10-09 1919 * threads for vm statistics updates disabled because of 7cc36bbddde5cd Christoph Lameter 2014-10-09 1920 * inactivity. 7cc36bbddde5cd Christoph Lameter 2014-10-09 1921 */ 7cc36bbddde5cd Christoph Lameter 2014-10-09 @1922 static void vmstat_shepherd(struct work_struct *w); 7cc36bbddde5cd Christoph Lameter 2014-10-09 1923 0eb77e98803219 Christoph Lameter 2016-01-14 @1924 static DECLARE_DEFERRABLE_WORK(shepherd, vmstat_shepherd); 7cc36bbddde5cd Christoph Lameter 2014-10-09 1925 7cc36bbddde5cd Christoph Lameter 2014-10-09 1926 static void vmstat_shepherd(struct work_struct *w) 7cc36bbddde5cd Christoph Lameter 2014-10-09 1927 { 7cc36bbddde5cd Christoph Lameter 2014-10-09 1928 int cpu; 7cc36bbddde5cd Christoph Lameter 2014-10-09 1929 7cc36bbddde5cd Christoph Lameter 2014-10-09 1930 get_online_cpus(); 7cc36bbddde5cd Christoph Lameter 2014-10-09 1931 /* Check processors whose vmstat worker threads have been disabled */ 7b8da4c7f07774 Christoph Lameter 2016-05-20 1932 for_each_online_cpu(cpu) { f01f17d3705bb6 Michal Hocko 2016-02-05 1933 struct delayed_work *dw = &per_cpu(vmstat_work, cpu); 7cc36bbddde5cd Christoph Lameter 2014-10-09 1934 7b8da4c7f07774 Christoph Lameter 2016-05-20 1935 if (!delayed_work_pending(dw) && need_update(cpu)) ce612879ddc78e Michal Hocko 2017-04-07 1936 queue_delayed_work_on(cpu, mm_percpu_wq, dw, 0); fbcc8183a4f815 Jiang Biao 2021-02-25 1937 fbcc8183a4f815 Jiang Biao 2021-02-25 1938 cond_resched(); f01f17d3705bb6 Michal Hocko 2016-02-05 1939 } 7cc36bbddde5cd Christoph Lameter 2014-10-09 1940 put_online_cpus(); 7cc36bbddde5cd Christoph Lameter 2014-10-09 1941 7cc36bbddde5cd Christoph Lameter 2014-10-09 1942 schedule_delayed_work(&shepherd, 7cc36bbddde5cd Christoph Lameter 2014-10-09 1943 round_jiffies_relative(sysctl_stat_interval)); d1187ed21026fd Christoph Lameter 2007-05-09 1944 } d1187ed21026fd Christoph Lameter 2007-05-09 1945 7cc36bbddde5cd Christoph Lameter 2014-10-09 @1946 static void __init start_shepherd_timer(void) d1187ed21026fd Christoph Lameter 2007-05-09 1947 { 7cc36bbddde5cd Christoph Lameter 2014-10-09 1948 int cpu; 7cc36bbddde5cd Christoph Lameter 2014-10-09 1949 7cc36bbddde5cd Christoph Lameter 2014-10-09 1950 for_each_possible_cpu(cpu) ccde8bd4014eb2 Michal Hocko 2016-02-05 1951 INIT_DEFERRABLE_WORK(per_cpu_ptr(&vmstat_work, cpu), 7cc36bbddde5cd Christoph Lameter 2014-10-09 1952 vmstat_update); 7cc36bbddde5cd Christoph Lameter 2014-10-09 1953 7cc36bbddde5cd Christoph Lameter 2014-10-09 1954 schedule_delayed_work(&shepherd, 7cc36bbddde5cd Christoph Lameter 2014-10-09 1955 round_jiffies_relative(sysctl_stat_interval)); d1187ed21026fd Christoph Lameter 2007-05-09 1956 } d1187ed21026fd Christoph Lameter 2007-05-09 1957 03e86dba5b628a Tim Chen 2016-10-07 @1958 static void __init init_cpu_node_state(void) 03e86dba5b628a Tim Chen 2016-10-07 1959 { 4c501327b4c67f Sebastian Andrzej Siewior 2016-11-29 1960 int node; 03e86dba5b628a Tim Chen 2016-10-07 1961 4c501327b4c67f Sebastian Andrzej Siewior 2016-11-29 1962 for_each_online_node(node) { 4c501327b4c67f Sebastian Andrzej Siewior 2016-11-29 1963 if (cpumask_weight(cpumask_of_node(node)) > 0) 4c501327b4c67f Sebastian Andrzej Siewior 2016-11-29 1964 node_set_state(node, N_CPU); 4c501327b4c67f Sebastian Andrzej Siewior 2016-11-29 1965 } 03e86dba5b628a Tim Chen 2016-10-07 1966 } 03e86dba5b628a Tim Chen 2016-10-07 1967 5438da977f83c9 Sebastian Andrzej Siewior 2016-11-29 @1968 static int vmstat_cpu_online(unsigned int cpu) 807a1bd2b2a388 Toshi Kani 2013-11-12 1969 { 5438da977f83c9 Sebastian Andrzej Siewior 2016-11-29 1970 refresh_zone_stat_thresholds(); 5438da977f83c9 Sebastian Andrzej Siewior 2016-11-29 1971 node_set_state(cpu_to_node(cpu), N_CPU); 5438da977f83c9 Sebastian Andrzej Siewior 2016-11-29 1972 return 0; 5438da977f83c9 Sebastian Andrzej Siewior 2016-11-29 1973 } 807a1bd2b2a388 Toshi Kani 2013-11-12 1974 5438da977f83c9 Sebastian Andrzej Siewior 2016-11-29 @1975 static int vmstat_cpu_down_prep(unsigned int cpu) 5438da977f83c9 Sebastian Andrzej Siewior 2016-11-29 1976 { 5438da977f83c9 Sebastian Andrzej Siewior 2016-11-29 1977 cancel_delayed_work_sync(&per_cpu(vmstat_work, cpu)); 5438da977f83c9 Sebastian Andrzej Siewior 2016-11-29 1978 return 0; 807a1bd2b2a388 Toshi Kani 2013-11-12 1979 } 807a1bd2b2a388 Toshi Kani 2013-11-12 1980 5438da977f83c9 Sebastian Andrzej Siewior 2016-11-29 @1981 static int vmstat_cpu_dead(unsigned int cpu) df9ecaba3f152d Christoph Lameter 2006-08-31 1982 { 5438da977f83c9 Sebastian Andrzej Siewior 2016-11-29 1983 const struct cpumask *node_cpus; 5438da977f83c9 Sebastian Andrzej Siewior 2016-11-29 1984 int node; 5438da977f83c9 Sebastian Andrzej Siewior 2016-11-29 1985 5438da977f83c9 Sebastian Andrzej Siewior 2016-11-29 1986 node = cpu_to_node(cpu); d1187ed21026fd Christoph Lameter 2007-05-09 1987 df9ecaba3f152d Christoph Lameter 2006-08-31 1988 refresh_zone_stat_thresholds(); 5438da977f83c9 Sebastian Andrzej Siewior 2016-11-29 1989 node_cpus = cpumask_of_node(node); 5438da977f83c9 Sebastian Andrzej Siewior 2016-11-29 1990 if (cpumask_weight(node_cpus) > 0) 5438da977f83c9 Sebastian Andrzej Siewior 2016-11-29 1991 return 0; 5438da977f83c9 Sebastian Andrzej Siewior 2016-11-29 1992 5438da977f83c9 Sebastian Andrzej Siewior 2016-11-29 1993 node_clear_state(node, N_CPU); 5438da977f83c9 Sebastian Andrzej Siewior 2016-11-29 1994 return 0; df9ecaba3f152d Christoph Lameter 2006-08-31 1995 } df9ecaba3f152d Christoph Lameter 2006-08-31 1996 :::::: The code at line 1793 was first introduced by commit :::::: 77461ab33229d48614402decfb1b2eaa6d446861 Make vm statistics update interval configurable :::::: TO: Christoph Lameter <clameter(a)sgi.com&gt; :::::: CC: Linus Torvalds <torvalds(a)woody.linux-foundation.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org