diff options
Diffstat (limited to 'kernel/sysctl.c')
| -rw-r--r-- | kernel/sysctl.c | 576 |
1 files changed, 46 insertions, 530 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 81cc974913bb..9b4f0cff76ea 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -20,18 +20,12 @@ */ #include <linux/module.h> -#include <linux/mm.h> -#include <linux/swap.h> -#include <linux/slab.h> #include <linux/sysctl.h> #include <linux/bitmap.h> -#include <linux/signal.h> -#include <linux/panic.h> #include <linux/printk.h> #include <linux/proc_fs.h> #include <linux/security.h> #include <linux/ctype.h> -#include <linux/kmemleak.h> #include <linux/filter.h> #include <linux/fs.h> #include <linux/init.h> @@ -42,26 +36,19 @@ #include <linux/highuid.h> #include <linux/writeback.h> #include <linux/ratelimit.h> -#include <linux/hugetlb.h> #include <linux/initrd.h> #include <linux/key.h> #include <linux/times.h> #include <linux/limits.h> -#include <linux/dcache.h> #include <linux/syscalls.h> -#include <linux/vmstat.h> #include <linux/nfs_fs.h> #include <linux/acpi.h> #include <linux/reboot.h> -#include <linux/ftrace.h> -#include <linux/perf_event.h> -#include <linux/oom.h> #include <linux/kmod.h> #include <linux/capability.h> #include <linux/binfmts.h> #include <linux/sched/sysctl.h> #include <linux/mount.h> -#include <linux/userfaultfd_k.h> #include <linux/pid.h> #include "../lib/kstrtox.h" @@ -71,12 +58,8 @@ #ifdef CONFIG_X86 #include <asm/nmi.h> -#include <asm/stacktrace.h> #include <asm/io.h> #endif -#ifdef CONFIG_SPARC -#include <asm/setup.h> -#endif #ifdef CONFIG_RT_MUTEXES #include <linux/rtmutex.h> #endif @@ -91,12 +74,6 @@ EXPORT_SYMBOL_GPL(sysctl_long_vals); #if defined(CONFIG_SYSCTL) /* Constants used for minimum and maximum */ - -#ifdef CONFIG_PERF_EVENTS -static const int six_hundred_forty_kb = 640 * 1024; -#endif - - static const int ngroups_max = NGROUPS_MAX; static const int cap_last_cap = CAP_LAST_CAP; @@ -129,12 +106,6 @@ enum sysctl_writes_mode { static enum sysctl_writes_mode sysctl_writes_strict = SYSCTL_WRITES_STRICT; #endif /* CONFIG_PROC_SYSCTL */ - -#if defined(HAVE_ARCH_PICK_MMAP_LAYOUT) || \ - defined(CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT) -int sysctl_legacy_va_layout; -#endif - #endif /* CONFIG_SYSCTL */ /* @@ -205,7 +176,7 @@ static int _proc_do_string(char *data, int maxlen, int write, return 0; } -static void warn_sysctl_write(struct ctl_table *table) +static void warn_sysctl_write(const struct ctl_table *table) { pr_warn_once("%s wrote to %s when file position was not 0!\n" "This will not be supported in the future. To silence this\n" @@ -223,7 +194,7 @@ static void warn_sysctl_write(struct ctl_table *table) * handlers can ignore the return value. */ static bool proc_first_pos_non_zero_ignore(loff_t *ppos, - struct ctl_table *table) + const struct ctl_table *table) { if (!*ppos) return false; @@ -256,7 +227,7 @@ static bool proc_first_pos_non_zero_ignore(loff_t *ppos, * * Returns 0 on success. */ -int proc_dostring(struct ctl_table *table, int write, +int proc_dostring(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { if (write) @@ -468,7 +439,7 @@ static int do_proc_douintvec_conv(unsigned long *lvalp, static const char proc_wspace_sep[] = { ' ', '\t', '\n' }; -static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table, +static int __do_proc_dointvec(void *tbl_data, const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos, int (*conv)(bool *negp, unsigned long *lvalp, int *valp, @@ -541,7 +512,7 @@ out: return err; } -static int do_proc_dointvec(struct ctl_table *table, int write, +static int do_proc_dointvec(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos, int (*conv)(bool *negp, unsigned long *lvalp, int *valp, int write, void *data), @@ -552,7 +523,7 @@ static int do_proc_dointvec(struct ctl_table *table, int write, } static int do_proc_douintvec_w(unsigned int *tbl_data, - struct ctl_table *table, + const struct ctl_table *table, void *buffer, size_t *lenp, loff_t *ppos, int (*conv)(unsigned long *lvalp, @@ -639,7 +610,7 @@ out: return err; } -static int __do_proc_douintvec(void *tbl_data, struct ctl_table *table, +static int __do_proc_douintvec(void *tbl_data, const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos, int (*conv)(unsigned long *lvalp, @@ -675,7 +646,7 @@ static int __do_proc_douintvec(void *tbl_data, struct ctl_table *table, return do_proc_douintvec_r(i, buffer, lenp, ppos, conv, data); } -int do_proc_douintvec(struct ctl_table *table, int write, +int do_proc_douintvec(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos, int (*conv)(unsigned long *lvalp, unsigned int *valp, @@ -702,7 +673,7 @@ int do_proc_douintvec(struct ctl_table *table, int write, * * Returns 0 on success. */ -int proc_dobool(struct ctl_table *table, int write, void *buffer, +int proc_dobool(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table tmp; @@ -739,7 +710,7 @@ int proc_dobool(struct ctl_table *table, int write, void *buffer, * * Returns 0 on success. */ -int proc_dointvec(struct ctl_table *table, int write, void *buffer, +int proc_dointvec(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { return do_proc_dointvec(table, write, buffer, lenp, ppos, NULL, NULL); @@ -758,7 +729,7 @@ int proc_dointvec(struct ctl_table *table, int write, void *buffer, * * Returns 0 on success. */ -int proc_douintvec(struct ctl_table *table, int write, void *buffer, +int proc_douintvec(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { return do_proc_douintvec(table, write, buffer, lenp, ppos, @@ -769,7 +740,7 @@ int proc_douintvec(struct ctl_table *table, int write, void *buffer, * Taint values can only be increased * This means we can safely use a temporary. */ -static int proc_taint(struct ctl_table *table, int write, +static int proc_taint(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table t; @@ -864,7 +835,7 @@ static int do_proc_dointvec_minmax_conv(bool *negp, unsigned long *lvalp, * * Returns 0 on success or -EINVAL on write when the range check fails. */ -int proc_dointvec_minmax(struct ctl_table *table, int write, +int proc_dointvec_minmax(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { struct do_proc_dointvec_minmax_conv_param param = { @@ -933,7 +904,7 @@ static int do_proc_douintvec_minmax_conv(unsigned long *lvalp, * * Returns 0 on success or -ERANGE on write when the range check fails. */ -int proc_douintvec_minmax(struct ctl_table *table, int write, +int proc_douintvec_minmax(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { struct do_proc_douintvec_minmax_conv_param param = { @@ -961,7 +932,7 @@ int proc_douintvec_minmax(struct ctl_table *table, int write, * * Returns 0 on success or an error on write when the range check fails. */ -int proc_dou8vec_minmax(struct ctl_table *table, int write, +int proc_dou8vec_minmax(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table tmp; @@ -977,16 +948,10 @@ int proc_dou8vec_minmax(struct ctl_table *table, int write, if (table->maxlen != sizeof(u8)) return -EINVAL; - if (table->extra1) { + if (table->extra1) min = *(unsigned int *) table->extra1; - if (min > 255U) - return -EINVAL; - } - if (table->extra2) { + if (table->extra2) max = *(unsigned int *) table->extra2; - if (max > 255U) - return -EINVAL; - } tmp = *table; @@ -1004,7 +969,7 @@ int proc_dou8vec_minmax(struct ctl_table *table, int write, EXPORT_SYMBOL_GPL(proc_dou8vec_minmax); #ifdef CONFIG_MAGIC_SYSRQ -static int sysrq_sysctl_handler(struct ctl_table *table, int write, +static int sysrq_sysctl_handler(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { int tmp, ret; @@ -1023,8 +988,9 @@ static int sysrq_sysctl_handler(struct ctl_table *table, int write, } #endif -static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, - int write, void *buffer, size_t *lenp, loff_t *ppos, +static int __do_proc_doulongvec_minmax(void *data, + const struct ctl_table *table, int write, + void *buffer, size_t *lenp, loff_t *ppos, unsigned long convmul, unsigned long convdiv) { unsigned long *i, *min, *max; @@ -1096,7 +1062,7 @@ out: return err; } -static int do_proc_doulongvec_minmax(struct ctl_table *table, int write, +static int do_proc_doulongvec_minmax(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos, unsigned long convmul, unsigned long convdiv) { @@ -1120,7 +1086,7 @@ static int do_proc_doulongvec_minmax(struct ctl_table *table, int write, * * Returns 0 on success. */ -int proc_doulongvec_minmax(struct ctl_table *table, int write, +int proc_doulongvec_minmax(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { return do_proc_doulongvec_minmax(table, write, buffer, lenp, ppos, 1l, 1l); @@ -1143,7 +1109,7 @@ int proc_doulongvec_minmax(struct ctl_table *table, int write, * * Returns 0 on success. */ -int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write, +int proc_doulongvec_ms_jiffies_minmax(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { return do_proc_doulongvec_minmax(table, write, buffer, @@ -1264,14 +1230,14 @@ static int do_proc_dointvec_ms_jiffies_minmax_conv(bool *negp, unsigned long *lv * * Returns 0 on success. */ -int proc_dointvec_jiffies(struct ctl_table *table, int write, +int proc_dointvec_jiffies(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { return do_proc_dointvec(table,write,buffer,lenp,ppos, do_proc_dointvec_jiffies_conv,NULL); } -int proc_dointvec_ms_jiffies_minmax(struct ctl_table *table, int write, +int proc_dointvec_ms_jiffies_minmax(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { struct do_proc_dointvec_minmax_conv_param param = { @@ -1297,7 +1263,7 @@ int proc_dointvec_ms_jiffies_minmax(struct ctl_table *table, int write, * * Returns 0 on success. */ -int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write, +int proc_dointvec_userhz_jiffies(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { return do_proc_dointvec(table, write, buffer, lenp, ppos, @@ -1310,7 +1276,6 @@ int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write, * @write: %TRUE if this is a write to the sysctl file * @buffer: the user buffer * @lenp: the size of the user buffer - * @ppos: file position * @ppos: the current position in the file * * Reads/writes up to table->maxlen/sizeof(unsigned int) integer @@ -1320,14 +1285,14 @@ int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write, * * Returns 0 on success. */ -int proc_dointvec_ms_jiffies(struct ctl_table *table, int write, void *buffer, +int proc_dointvec_ms_jiffies(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { return do_proc_dointvec(table, write, buffer, lenp, ppos, do_proc_dointvec_ms_jiffies_conv, NULL); } -static int proc_do_cad_pid(struct ctl_table *table, int write, void *buffer, +static int proc_do_cad_pid(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { struct pid *new_pid; @@ -1366,7 +1331,7 @@ static int proc_do_cad_pid(struct ctl_table *table, int write, void *buffer, * * Returns 0 on success. */ -int proc_do_large_bitmap(struct ctl_table *table, int write, +int proc_do_large_bitmap(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { int err = 0; @@ -1498,85 +1463,85 @@ int proc_do_large_bitmap(struct ctl_table *table, int write, #else /* CONFIG_PROC_SYSCTL */ -int proc_dostring(struct ctl_table *table, int write, +int proc_dostring(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } -int proc_dobool(struct ctl_table *table, int write, +int proc_dobool(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } -int proc_dointvec(struct ctl_table *table, int write, +int proc_dointvec(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } -int proc_douintvec(struct ctl_table *table, int write, +int proc_douintvec(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } -int proc_dointvec_minmax(struct ctl_table *table, int write, +int proc_dointvec_minmax(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } -int proc_douintvec_minmax(struct ctl_table *table, int write, +int proc_douintvec_minmax(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } -int proc_dou8vec_minmax(struct ctl_table *table, int write, +int proc_dou8vec_minmax(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } -int proc_dointvec_jiffies(struct ctl_table *table, int write, +int proc_dointvec_jiffies(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } -int proc_dointvec_ms_jiffies_minmax(struct ctl_table *table, int write, +int proc_dointvec_ms_jiffies_minmax(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } -int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write, +int proc_dointvec_userhz_jiffies(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } -int proc_dointvec_ms_jiffies(struct ctl_table *table, int write, +int proc_dointvec_ms_jiffies(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } -int proc_doulongvec_minmax(struct ctl_table *table, int write, +int proc_doulongvec_minmax(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } -int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write, +int proc_doulongvec_ms_jiffies_minmax(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } -int proc_do_large_bitmap(struct ctl_table *table, int write, +int proc_do_large_bitmap(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; @@ -1585,7 +1550,7 @@ int proc_do_large_bitmap(struct ctl_table *table, int write, #endif /* CONFIG_PROC_SYSCTL */ #if defined(CONFIG_SYSCTL) -int proc_do_static_key(struct ctl_table *table, int write, +int proc_do_static_key(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { struct static_key *key = (struct static_key *)table->data; @@ -1615,14 +1580,7 @@ int proc_do_static_key(struct ctl_table *table, int write, return ret; } -static struct ctl_table kern_table[] = { - { - .procname = "panic", - .data = &panic_timeout, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec, - }, +static const struct ctl_table kern_table[] = { #ifdef CONFIG_PROC_SYSCTL { .procname = "tainted", @@ -1640,45 +1598,6 @@ static struct ctl_table kern_table[] = { .extra2 = SYSCTL_ONE, }, #endif - { - .procname = "print-fatal-signals", - .data = &print_fatal_signals, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec, - }, -#ifdef CONFIG_SPARC - { - .procname = "reboot-cmd", - .data = reboot_command, - .maxlen = 256, - .mode = 0644, - .proc_handler = proc_dostring, - }, - { - .procname = "stop-a", - .data = &stop_a_enabled, - .maxlen = sizeof (int), - .mode = 0644, - .proc_handler = proc_dointvec, - }, - { - .procname = "scons-poweroff", - .data = &scons_pwroff, - .maxlen = sizeof (int), - .mode = 0644, - .proc_handler = proc_dointvec, - }, -#endif -#ifdef CONFIG_SPARC64 - { - .procname = "tsb-ratio", - .data = &sysctl_tsb_ratio, - .maxlen = sizeof (int), - .mode = 0644, - .proc_handler = proc_dointvec, - }, -#endif #ifdef CONFIG_PARISC { .procname = "soft-power", @@ -1697,38 +1616,6 @@ static struct ctl_table kern_table[] = { .proc_handler = proc_dointvec, }, #endif -#ifdef CONFIG_STACK_TRACER - { - .procname = "stack_tracer_enabled", - .data = &stack_tracer_enabled, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = stack_trace_sysctl, - }, -#endif -#ifdef CONFIG_TRACING - { - .procname = "ftrace_dump_on_oops", - .data = &ftrace_dump_on_oops, - .maxlen = MAX_TRACER_SIZE, - .mode = 0644, - .proc_handler = proc_dostring, - }, - { - .procname = "traceoff_on_warning", - .data = &__disable_trace_on_warning, - .maxlen = sizeof(__disable_trace_on_warning), - .mode = 0644, - .proc_handler = proc_dointvec, - }, - { - .procname = "tracepoint_printk", - .data = &tracepoint_printk, - .maxlen = sizeof(tracepoint_printk), - .mode = 0644, - .proc_handler = tracepoint_printk_sysctl, - }, -#endif #ifdef CONFIG_MODULES { .procname = "modprobe", @@ -1800,38 +1687,6 @@ static struct ctl_table kern_table[] = { .extra1 = SYSCTL_ZERO, .extra2 = SYSCTL_MAXOLDUID, }, -#ifdef CONFIG_S390 - { - .procname = "userprocess_debug", - .data = &show_unhandled_signals, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec, - }, -#endif - { - .procname = "pid_max", - .data = &pid_max, - .maxlen = sizeof (int), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = &pid_max_min, - .extra2 = &pid_max_max, - }, - { - .procname = "panic_on_oops", - .data = &panic_on_oops, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec, - }, - { - .procname = "panic_print", - .data = &panic_print, - .maxlen = sizeof(unsigned long), - .mode = 0644, - .proc_handler = proc_doulongvec_minmax, - }, { .procname = "ngroups_max", .data = (void *)&ngroups_max, @@ -1846,16 +1701,6 @@ static struct ctl_table kern_table[] = { .mode = 0444, .proc_handler = proc_dointvec, }, -#if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86) - { - .procname = "unknown_nmi_panic", - .data = &unknown_nmi_panic, - .maxlen = sizeof (int), - .mode = 0644, - .proc_handler = proc_dointvec, - }, -#endif - #if (defined(CONFIG_X86_32) || defined(CONFIG_PARISC)) && \ defined(CONFIG_DEBUG_STACKOVERFLOW) { @@ -1866,43 +1711,6 @@ static struct ctl_table kern_table[] = { .proc_handler = proc_dointvec, }, #endif -#if defined(CONFIG_X86) - { - .procname = "panic_on_unrecovered_nmi", - .data = &panic_on_unrecovered_nmi, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec, - }, - { - .procname = "panic_on_io_nmi", - .data = &panic_on_io_nmi, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec, - }, - { - .procname = "bootloader_type", - .data = &bootloader_type, - .maxlen = sizeof (int), - .mode = 0444, - .proc_handler = proc_dointvec, - }, - { - .procname = "bootloader_version", - .data = &bootloader_version, - .maxlen = sizeof (int), - .mode = 0444, - .proc_handler = proc_dointvec, - }, - { - .procname = "io_delay_type", - .data = &io_delay_type, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec, - }, -#endif #if defined(CONFIG_MMU) { .procname = "randomize_va_space", @@ -1912,24 +1720,6 @@ static struct ctl_table kern_table[] = { .proc_handler = proc_dointvec, }, #endif -#if defined(CONFIG_S390) && defined(CONFIG_SMP) - { - .procname = "spin_retry", - .data = &spin_retry, - .maxlen = sizeof (int), - .mode = 0644, - .proc_handler = proc_dointvec, - }, -#endif -#if defined(CONFIG_ACPI_SLEEP) && defined(CONFIG_X86) - { - .procname = "acpi_video_flags", - .data = &acpi_realmode_flags, - .maxlen = sizeof (unsigned long), - .mode = 0644, - .proc_handler = proc_doulongvec_minmax, - }, -#endif #ifdef CONFIG_SYSCTL_ARCH_UNALIGN_NO_WARN { .procname = "ignore-unaligned-usertrap", @@ -1948,72 +1738,6 @@ static struct ctl_table kern_table[] = { .proc_handler = proc_dointvec, }, #endif -#ifdef CONFIG_PERF_EVENTS - /* - * User-space scripts rely on the existence of this file - * as a feature check for perf_events being enabled. - * - * So it's an ABI, do not remove! - */ - { - .procname = "perf_event_paranoid", - .data = &sysctl_perf_event_paranoid, - .maxlen = sizeof(sysctl_perf_event_paranoid), - .mode = 0644, - .proc_handler = proc_dointvec, - }, - { - .procname = "perf_event_mlock_kb", - .data = &sysctl_perf_event_mlock, - .maxlen = sizeof(sysctl_perf_event_mlock), - .mode = 0644, - .proc_handler = proc_dointvec, - }, - { - .procname = "perf_event_max_sample_rate", - .data = &sysctl_perf_event_sample_rate, - .maxlen = sizeof(sysctl_perf_event_sample_rate), - .mode = 0644, - .proc_handler = perf_event_max_sample_rate_handler, - .extra1 = SYSCTL_ONE, - }, - { - .procname = "perf_cpu_time_max_percent", - .data = &sysctl_perf_cpu_time_max_percent, - .maxlen = sizeof(sysctl_perf_cpu_time_max_percent), - .mode = 0644, - .proc_handler = perf_cpu_time_max_percent_handler, - .extra1 = SYSCTL_ZERO, - .extra2 = SYSCTL_ONE_HUNDRED, - }, - { - .procname = "perf_event_max_stack", - .data = &sysctl_perf_event_max_stack, - .maxlen = sizeof(sysctl_perf_event_max_stack), - .mode = 0644, - .proc_handler = perf_event_max_stack_handler, - .extra1 = SYSCTL_ZERO, - .extra2 = (void *)&six_hundred_forty_kb, - }, - { - .procname = "perf_event_max_contexts_per_stack", - .data = &sysctl_perf_event_max_contexts_per_stack, - .maxlen = sizeof(sysctl_perf_event_max_contexts_per_stack), - .mode = 0644, - .proc_handler = perf_event_max_stack_handler, - .extra1 = SYSCTL_ZERO, - .extra2 = SYSCTL_ONE_THOUSAND, - }, -#endif - { - .procname = "panic_on_warn", - .data = &panic_on_warn, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = SYSCTL_ZERO, - .extra2 = SYSCTL_ONE, - }, #ifdef CONFIG_TREE_RCU { .procname = "panic_on_rcu_stall", @@ -2034,219 +1758,11 @@ static struct ctl_table kern_table[] = { .extra2 = SYSCTL_INT_MAX, }, #endif - { } -}; - -static struct ctl_table vm_table[] = { - { - .procname = "overcommit_memory", - .data = &sysctl_overcommit_memory, - .maxlen = sizeof(sysctl_overcommit_memory), - .mode = 0644, - .proc_handler = overcommit_policy_handler, - .extra1 = SYSCTL_ZERO, - .extra2 = SYSCTL_TWO, - }, - { - .procname = "overcommit_ratio", - .data = &sysctl_overcommit_ratio, - .maxlen = sizeof(sysctl_overcommit_ratio), - .mode = 0644, - .proc_handler = overcommit_ratio_handler, - }, - { - .procname = "overcommit_kbytes", - .data = &sysctl_overcommit_kbytes, - .maxlen = sizeof(sysctl_overcommit_kbytes), - .mode = 0644, - .proc_handler = overcommit_kbytes_handler, - }, - { - .procname = "page-cluster", - .data = &page_cluster, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = SYSCTL_ZERO, - .extra2 = (void *)&page_cluster_max, - }, - { - .procname = "dirtytime_expire_seconds", - .data = &dirtytime_expire_interval, - .maxlen = sizeof(dirtytime_expire_interval), - .mode = 0644, - .proc_handler = dirtytime_interval_handler, - .extra1 = SYSCTL_ZERO, - }, - { - .procname = "swappiness", - .data = &vm_swappiness, - .maxlen = sizeof(vm_swappiness), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = SYSCTL_ZERO, - .extra2 = SYSCTL_TWO_HUNDRED, - }, -#ifdef CONFIG_NUMA - { - .procname = "numa_stat", - .data = &sysctl_vm_numa_stat, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = sysctl_vm_numa_stat_handler, - .extra1 = SYSCTL_ZERO, - .extra2 = SYSCTL_ONE, - }, -#endif - { - .procname = "drop_caches", - .data = &sysctl_drop_caches, - .maxlen = sizeof(int), - .mode = 0200, - .proc_handler = drop_caches_sysctl_handler, - .extra1 = SYSCTL_ONE, - .extra2 = SYSCTL_FOUR, - }, - { - .procname = "page_lock_unfairness", - .data = &sysctl_page_lock_unfairness, - .maxlen = sizeof(sysctl_page_lock_unfairness), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = SYSCTL_ZERO, - }, -#ifdef CONFIG_MMU - { - .procname = "max_map_count", - .data = &sysctl_max_map_count, - .maxlen = sizeof(sysctl_max_map_count), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = SYSCTL_ZERO, - }, -#else - { - .procname = "nr_trim_pages", - .data = &sysctl_nr_trim_pages, - .maxlen = sizeof(sysctl_nr_trim_pages), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = SYSCTL_ZERO, - }, -#endif - { - .procname = "vfs_cache_pressure", - .data = &sysctl_vfs_cache_pressure, - .maxlen = sizeof(sysctl_vfs_cache_pressure), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = SYSCTL_ZERO, - }, -#if defined(HAVE_ARCH_PICK_MMAP_LAYOUT) || \ - defined(CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT) - { - .procname = "legacy_va_layout", - .data = &sysctl_legacy_va_layout, - .maxlen = sizeof(sysctl_legacy_va_layout), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = SYSCTL_ZERO, - }, -#endif -#ifdef CONFIG_NUMA - { - .procname = "zone_reclaim_mode", - .data = &node_reclaim_mode, - .maxlen = sizeof(node_reclaim_mode), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = SYSCTL_ZERO, - }, -#endif -#ifdef CONFIG_SMP - { - .procname = "stat_interval", - .data = &sysctl_stat_interval, - .maxlen = sizeof(sysctl_stat_interval), - .mode = 0644, - .proc_handler = proc_dointvec_jiffies, - }, - { - .procname = "stat_refresh", - .data = NULL, - .maxlen = 0, - .mode = 0600, - .proc_handler = vmstat_refresh, - }, -#endif -#ifdef CONFIG_MMU - { - .procname = "mmap_min_addr", - .data = &dac_mmap_min_addr, - .maxlen = sizeof(unsigned long), - .mode = 0644, - .proc_handler = mmap_min_addr_handler, - }, -#endif -#if (defined(CONFIG_X86_32) && !defined(CONFIG_UML))|| \ - (defined(CONFIG_SUPERH) && defined(CONFIG_VSYSCALL)) - { - .procname = "vdso_enabled", -#ifdef CONFIG_X86_32 - .data = &vdso32_enabled, - .maxlen = sizeof(vdso32_enabled), -#else - .data = &vdso_enabled, - .maxlen = sizeof(vdso_enabled), -#endif - .mode = 0644, - .proc_handler = proc_dointvec, - .extra1 = SYSCTL_ZERO, - }, -#endif - { - .procname = "user_reserve_kbytes", - .data = &sysctl_user_reserve_kbytes, - .maxlen = sizeof(sysctl_user_reserve_kbytes), - .mode = 0644, - .proc_handler = proc_doulongvec_minmax, - }, - { - .procname = "admin_reserve_kbytes", - .data = &sysctl_admin_reserve_kbytes, - .maxlen = sizeof(sysctl_admin_reserve_kbytes), - .mode = 0644, - .proc_handler = proc_doulongvec_minmax, - }, -#ifdef CONFIG_HAVE_ARCH_MMAP_RND_BITS - { - .procname = "mmap_rnd_bits", - .data = &mmap_rnd_bits, - .maxlen = sizeof(mmap_rnd_bits), - .mode = 0600, - .proc_handler = proc_dointvec_minmax, - .extra1 = (void *)&mmap_rnd_bits_min, - .extra2 = (void *)&mmap_rnd_bits_max, - }, -#endif -#ifdef CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS - { - .procname = "mmap_rnd_compat_bits", - .data = &mmap_rnd_compat_bits, - .maxlen = sizeof(mmap_rnd_compat_bits), - .mode = 0600, - .proc_handler = proc_dointvec_minmax, - .extra1 = (void *)&mmap_rnd_compat_bits_min, - .extra2 = (void *)&mmap_rnd_compat_bits_max, - }, -#endif - { } }; int __init sysctl_init_bases(void) { register_sysctl_init("kernel", kern_table); - register_sysctl_init("vm", vm_table); return 0; } |