* pass kernel pointers to the sysctl ->proc_handler method v3
@ 2020-04-24 6:43 Christoph Hellwig
2020-04-24 6:43 ` [PATCH 1/5] bpf-cgroup: remove unused exports Christoph Hellwig
` (6 more replies)
0 siblings, 7 replies; 21+ messages in thread
From: Christoph Hellwig @ 2020-04-24 6:43 UTC (permalink / raw)
To: Kees Cook, Iurii Zaikin
Cc: Alexei Starovoitov, Daniel Borkmann, linux-kernel, linux-mm,
linux-fsdevel, netdev, bpf
Hi all,
this series changes the sysctl ->proc_handler methods to take kernel
pointers. This simplifies some of the pointer handling in the methods
(which could probably be further simplified now), and gets rid of the
set_fs address space overrides used by bpf.
Changes since v2:
- free the buffer modified by BPF
- move pid_max and friends to pid.h
Changes since v1:
- drop a patch merged by Greg
- don't copy data out on a write
- fix buffer allocation in bpf
^ permalink raw reply [flat|nested] 21+ messages in thread
* [PATCH 1/5] bpf-cgroup: remove unused exports
2020-04-24 6:43 pass kernel pointers to the sysctl ->proc_handler method v3 Christoph Hellwig
@ 2020-04-24 6:43 ` Christoph Hellwig
2020-04-27 21:23 ` Daniel Borkmann
2020-04-24 6:43 ` [PATCH 2/5] mm: remove watermark_boost_factor_sysctl_handler Christoph Hellwig
` (5 subsequent siblings)
6 siblings, 1 reply; 21+ messages in thread
From: Christoph Hellwig @ 2020-04-24 6:43 UTC (permalink / raw)
To: Kees Cook, Iurii Zaikin
Cc: Alexei Starovoitov, Daniel Borkmann, linux-kernel, linux-mm,
linux-fsdevel, netdev, bpf, Andrey Ignatov
Except for a few of the networking hooks called from modular ipv4 or
ipv6 code, all of hooks are just called from guaranteed to be built-in
code.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Andrey Ignatov <rdna@fb.com>
---
kernel/bpf/cgroup.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/kernel/bpf/cgroup.c b/kernel/bpf/cgroup.c
index cb305e71e7deb..929d9a7263da1 100644
--- a/kernel/bpf/cgroup.c
+++ b/kernel/bpf/cgroup.c
@@ -1054,7 +1054,6 @@ int __cgroup_bpf_check_dev_permission(short dev_type, u32 major, u32 minor,
return !allow;
}
-EXPORT_SYMBOL(__cgroup_bpf_check_dev_permission);
static const struct bpf_func_proto *
cgroup_base_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
@@ -1221,7 +1220,6 @@ int __cgroup_bpf_run_filter_sysctl(struct ctl_table_header *head,
return ret == 1 ? 0 : -EPERM;
}
-EXPORT_SYMBOL(__cgroup_bpf_run_filter_sysctl);
#ifdef CONFIG_NET
static bool __cgroup_bpf_prog_array_is_empty(struct cgroup *cgrp,
@@ -1326,7 +1324,6 @@ int __cgroup_bpf_run_filter_setsockopt(struct sock *sk, int *level,
sockopt_free_buf(&ctx);
return ret;
}
-EXPORT_SYMBOL(__cgroup_bpf_run_filter_setsockopt);
int __cgroup_bpf_run_filter_getsockopt(struct sock *sk, int level,
int optname, char __user *optval,
@@ -1413,7 +1410,6 @@ int __cgroup_bpf_run_filter_getsockopt(struct sock *sk, int level,
sockopt_free_buf(&ctx);
return ret;
}
-EXPORT_SYMBOL(__cgroup_bpf_run_filter_getsockopt);
#endif
static ssize_t sysctl_cpy_dir(const struct ctl_dir *dir, char **bufp,
--
2.26.1
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH 2/5] mm: remove watermark_boost_factor_sysctl_handler
2020-04-24 6:43 pass kernel pointers to the sysctl ->proc_handler method v3 Christoph Hellwig
2020-04-24 6:43 ` [PATCH 1/5] bpf-cgroup: remove unused exports Christoph Hellwig
@ 2020-04-24 6:43 ` Christoph Hellwig
2020-05-04 18:41 ` Kees Cook
2020-04-24 6:43 ` [PATCH 3/5] sysctl: remove all extern declaration from sysctl.c Christoph Hellwig
` (4 subsequent siblings)
6 siblings, 1 reply; 21+ messages in thread
From: Christoph Hellwig @ 2020-04-24 6:43 UTC (permalink / raw)
To: Kees Cook, Iurii Zaikin
Cc: Alexei Starovoitov, Daniel Borkmann, linux-kernel, linux-mm,
linux-fsdevel, netdev, bpf, David Rientjes
watermark_boost_factor_sysctl_handler is just a pointless wrapper for
proc_dointvec_minmax, so remove it and use proc_dointvec_minmax
directly.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: David Rientjes <rientjes@google.com>
---
include/linux/mmzone.h | 2 --
kernel/sysctl.c | 2 +-
mm/page_alloc.c | 12 ------------
3 files changed, 1 insertion(+), 15 deletions(-)
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 1b9de7d220fb7..f37bb8f187fc7 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -911,8 +911,6 @@ static inline int is_highmem(struct zone *zone)
struct ctl_table;
int min_free_kbytes_sysctl_handler(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
-int watermark_boost_factor_sysctl_handler(struct ctl_table *, int,
- void __user *, size_t *, loff_t *);
int watermark_scale_factor_sysctl_handler(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
extern int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES];
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 8a176d8727a3a..99d27acf46465 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1491,7 +1491,7 @@ static struct ctl_table vm_table[] = {
.data = &watermark_boost_factor,
.maxlen = sizeof(watermark_boost_factor),
.mode = 0644,
- .proc_handler = watermark_boost_factor_sysctl_handler,
+ .proc_handler = proc_dointvec_minmax,
.extra1 = SYSCTL_ZERO,
},
{
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 69827d4fa0527..62c1550cd43ec 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -7978,18 +7978,6 @@ int min_free_kbytes_sysctl_handler(struct ctl_table *table, int write,
return 0;
}
-int watermark_boost_factor_sysctl_handler(struct ctl_table *table, int write,
- void __user *buffer, size_t *length, loff_t *ppos)
-{
- int rc;
-
- rc = proc_dointvec_minmax(table, write, buffer, length, ppos);
- if (rc)
- return rc;
-
- return 0;
-}
-
int watermark_scale_factor_sysctl_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *length, loff_t *ppos)
{
--
2.26.1
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH 3/5] sysctl: remove all extern declaration from sysctl.c
2020-04-24 6:43 pass kernel pointers to the sysctl ->proc_handler method v3 Christoph Hellwig
2020-04-24 6:43 ` [PATCH 1/5] bpf-cgroup: remove unused exports Christoph Hellwig
2020-04-24 6:43 ` [PATCH 2/5] mm: remove watermark_boost_factor_sysctl_handler Christoph Hellwig
@ 2020-04-24 6:43 ` Christoph Hellwig
2020-05-04 1:25 ` Stephen Rothwell
2020-05-04 18:42 ` Kees Cook
2020-04-24 6:43 ` [PATCH 4/5] sysctl: avoid forward declarations Christoph Hellwig
` (3 subsequent siblings)
6 siblings, 2 replies; 21+ messages in thread
From: Christoph Hellwig @ 2020-04-24 6:43 UTC (permalink / raw)
To: Kees Cook, Iurii Zaikin
Cc: Alexei Starovoitov, Daniel Borkmann, linux-kernel, linux-mm,
linux-fsdevel, netdev, bpf
Extern declarations in .c files are a bad style and can lead to
mismatches. Use existing definitions in headers where they exist,
and otherwise move the external declarations to suitable header
files.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
include/linux/coredump.h | 4 ++++
include/linux/file.h | 2 ++
include/linux/mm.h | 2 ++
include/linux/mmzone.h | 2 ++
include/linux/pid.h | 3 +++
include/linux/sysctl.h | 8 +++++++
kernel/sysctl.c | 45 +++-------------------------------------
7 files changed, 24 insertions(+), 42 deletions(-)
diff --git a/include/linux/coredump.h b/include/linux/coredump.h
index abf4b4e65dbb9..7a899e83835d5 100644
--- a/include/linux/coredump.h
+++ b/include/linux/coredump.h
@@ -22,4 +22,8 @@ extern void do_coredump(const kernel_siginfo_t *siginfo);
static inline void do_coredump(const kernel_siginfo_t *siginfo) {}
#endif
+extern int core_uses_pid;
+extern char core_pattern[];
+extern unsigned int core_pipe_limit;
+
#endif /* _LINUX_COREDUMP_H */
diff --git a/include/linux/file.h b/include/linux/file.h
index 142d102f285e5..122f80084a3ef 100644
--- a/include/linux/file.h
+++ b/include/linux/file.h
@@ -94,4 +94,6 @@ extern void fd_install(unsigned int fd, struct file *file);
extern void flush_delayed_fput(void);
extern void __fput_sync(struct file *);
+extern unsigned int sysctl_nr_open_min, sysctl_nr_open_max;
+
#endif /* __LINUX_FILE_H */
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 5a323422d783d..9c4e7e76deddc 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -3140,5 +3140,7 @@ unsigned long wp_shared_mapping_range(struct address_space *mapping,
pgoff_t first_index, pgoff_t nr);
#endif
+extern int sysctl_nr_trim_pages;
+
#endif /* __KERNEL__ */
#endif /* _LINUX_MM_H */
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index f37bb8f187fc7..b2af594ef0f7c 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -909,6 +909,7 @@ static inline int is_highmem(struct zone *zone)
/* These two functions are used to setup the per zone pages min values */
struct ctl_table;
+
int min_free_kbytes_sysctl_handler(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
int watermark_scale_factor_sysctl_handler(struct ctl_table *, int,
@@ -925,6 +926,7 @@ int sysctl_min_slab_ratio_sysctl_handler(struct ctl_table *, int,
extern int numa_zonelist_order_handler(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
+extern int percpu_pagelist_fraction;
extern char numa_zonelist_order[];
#define NUMA_ZONELIST_ORDER_LEN 16
diff --git a/include/linux/pid.h b/include/linux/pid.h
index cc896f0fc4e34..93543cbc0e6b3 100644
--- a/include/linux/pid.h
+++ b/include/linux/pid.h
@@ -108,6 +108,9 @@ extern void transfer_pid(struct task_struct *old, struct task_struct *new,
struct pid_namespace;
extern struct pid_namespace init_pid_ns;
+extern int pid_max;
+extern int pid_max_min, pid_max_max;
+
/*
* look up a PID in the hash table. Must be called with the tasklist_lock
* or rcu_read_lock() held.
diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index 02fa84493f237..36143ca40b56b 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -207,7 +207,15 @@ void unregister_sysctl_table(struct ctl_table_header * table);
extern int sysctl_init(void);
+extern int pwrsw_enabled;
+extern int unaligned_enabled;
+extern int unaligned_dump_stack;
+extern int no_unaligned_warning;
+
extern struct ctl_table sysctl_mount_point[];
+extern struct ctl_table random_table[];
+extern struct ctl_table firmware_config_table[];
+extern struct ctl_table epoll_table[];
#else /* CONFIG_SYSCTL */
static inline struct ctl_table_header *register_sysctl_table(struct ctl_table * table)
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 99d27acf46465..31b934865ebc3 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -68,6 +68,9 @@
#include <linux/bpf.h>
#include <linux/mount.h>
#include <linux/userfaultfd_k.h>
+#include <linux/coredump.h>
+#include <linux/latencytop.h>
+#include <linux/pid.h>
#include "../lib/kstrtox.h"
@@ -103,22 +106,6 @@
#if defined(CONFIG_SYSCTL)
-/* External variables not in a header file. */
-extern int suid_dumpable;
-#ifdef CONFIG_COREDUMP
-extern int core_uses_pid;
-extern char core_pattern[];
-extern unsigned int core_pipe_limit;
-#endif
-extern int pid_max;
-extern int pid_max_min, pid_max_max;
-extern int percpu_pagelist_fraction;
-extern int latencytop_enabled;
-extern unsigned int sysctl_nr_open_min, sysctl_nr_open_max;
-#ifndef CONFIG_MMU
-extern int sysctl_nr_trim_pages;
-#endif
-
/* Constants used for minimum and maximum */
#ifdef CONFIG_LOCKUP_DETECTOR
static int sixty = 60;
@@ -160,24 +147,6 @@ static unsigned long hung_task_timeout_max = (LONG_MAX/HZ);
#ifdef CONFIG_INOTIFY_USER
#include <linux/inotify.h>
#endif
-#ifdef CONFIG_SPARC
-#endif
-
-#ifdef CONFIG_PARISC
-extern int pwrsw_enabled;
-#endif
-
-#ifdef CONFIG_SYSCTL_ARCH_UNALIGN_ALLOW
-extern int unaligned_enabled;
-#endif
-
-#ifdef CONFIG_IA64
-extern int unaligned_dump_stack;
-#endif
-
-#ifdef CONFIG_SYSCTL_ARCH_UNALIGN_NO_WARN
-extern int no_unaligned_warning;
-#endif
#ifdef CONFIG_PROC_SYSCTL
@@ -243,14 +212,6 @@ static struct ctl_table vm_table[];
static struct ctl_table fs_table[];
static struct ctl_table debug_table[];
static struct ctl_table dev_table[];
-extern struct ctl_table random_table[];
-#ifdef CONFIG_EPOLL
-extern struct ctl_table epoll_table[];
-#endif
-
-#ifdef CONFIG_FW_LOADER_USER_HELPER
-extern struct ctl_table firmware_config_table[];
-#endif
#if defined(HAVE_ARCH_PICK_MMAP_LAYOUT) || \
defined(CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT)
--
2.26.1
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH 4/5] sysctl: avoid forward declarations
2020-04-24 6:43 pass kernel pointers to the sysctl ->proc_handler method v3 Christoph Hellwig
` (2 preceding siblings ...)
2020-04-24 6:43 ` [PATCH 3/5] sysctl: remove all extern declaration from sysctl.c Christoph Hellwig
@ 2020-04-24 6:43 ` Christoph Hellwig
2020-05-04 18:44 ` Kees Cook
2020-04-26 15:51 ` pass kernel pointers to the sysctl ->proc_handler method v3 Alexei Starovoitov
` (2 subsequent siblings)
6 siblings, 1 reply; 21+ messages in thread
From: Christoph Hellwig @ 2020-04-24 6:43 UTC (permalink / raw)
To: Kees Cook, Iurii Zaikin
Cc: Alexei Starovoitov, Daniel Borkmann, linux-kernel, linux-mm,
linux-fsdevel, netdev, bpf
Move the sysctl tables to the end of the file to avoid lots of pointless
forward declarations.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
kernel/sysctl.c | 3565 +++++++++++++++++++++++------------------------
1 file changed, 1764 insertions(+), 1801 deletions(-)
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 31b934865ebc3..511543d238794 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -176,79 +176,13 @@ enum sysctl_writes_mode {
};
static enum sysctl_writes_mode sysctl_writes_strict = SYSCTL_WRITES_STRICT;
-
-static int proc_do_cad_pid(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos);
-static int proc_taint(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos);
-#ifdef CONFIG_COMPACTION
-static int proc_dointvec_minmax_warn_RT_change(struct ctl_table *table,
- int write, void __user *buffer,
- size_t *lenp, loff_t *ppos);
-#endif
-#endif
-
-#ifdef CONFIG_PRINTK
-static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos);
-#endif
-
-static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos);
-#ifdef CONFIG_COREDUMP
-static int proc_dostring_coredump(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos);
-#endif
-static int proc_dopipe_max_size(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos);
-
-#ifdef CONFIG_MAGIC_SYSRQ
-static int sysrq_sysctl_handler(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos);
-#endif
-
-static struct ctl_table kern_table[];
-static struct ctl_table vm_table[];
-static struct ctl_table fs_table[];
-static struct ctl_table debug_table[];
-static struct ctl_table dev_table[];
+#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
-/* The default sysctl tables: */
-
-static struct ctl_table sysctl_base_table[] = {
- {
- .procname = "kernel",
- .mode = 0555,
- .child = kern_table,
- },
- {
- .procname = "vm",
- .mode = 0555,
- .child = vm_table,
- },
- {
- .procname = "fs",
- .mode = 0555,
- .child = fs_table,
- },
- {
- .procname = "debug",
- .mode = 0555,
- .child = debug_table,
- },
- {
- .procname = "dev",
- .mode = 0555,
- .child = dev_table,
- },
- { }
-};
-
#ifdef CONFIG_SCHED_DEBUG
static int min_sched_granularity_ns = 100000; /* 100 usecs */
static int max_sched_granularity_ns = NSEC_PER_SEC; /* 1 second */
@@ -265,1676 +199,12 @@ static int min_extfrag_threshold;
static int max_extfrag_threshold = 1000;
#endif
-static struct ctl_table kern_table[] = {
- {
- .procname = "sched_child_runs_first",
- .data = &sysctl_sched_child_runs_first,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
-#ifdef CONFIG_SCHED_DEBUG
- {
- .procname = "sched_min_granularity_ns",
- .data = &sysctl_sched_min_granularity,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = sched_proc_update_handler,
- .extra1 = &min_sched_granularity_ns,
- .extra2 = &max_sched_granularity_ns,
- },
- {
- .procname = "sched_latency_ns",
- .data = &sysctl_sched_latency,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = sched_proc_update_handler,
- .extra1 = &min_sched_granularity_ns,
- .extra2 = &max_sched_granularity_ns,
- },
- {
- .procname = "sched_wakeup_granularity_ns",
- .data = &sysctl_sched_wakeup_granularity,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = sched_proc_update_handler,
- .extra1 = &min_wakeup_granularity_ns,
- .extra2 = &max_wakeup_granularity_ns,
- },
-#ifdef CONFIG_SMP
- {
- .procname = "sched_tunable_scaling",
- .data = &sysctl_sched_tunable_scaling,
- .maxlen = sizeof(enum sched_tunable_scaling),
- .mode = 0644,
- .proc_handler = sched_proc_update_handler,
- .extra1 = &min_sched_tunable_scaling,
- .extra2 = &max_sched_tunable_scaling,
- },
- {
- .procname = "sched_migration_cost_ns",
- .data = &sysctl_sched_migration_cost,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
- {
- .procname = "sched_nr_migrate",
- .data = &sysctl_sched_nr_migrate,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
-#ifdef CONFIG_SCHEDSTATS
- {
- .procname = "sched_schedstats",
- .data = NULL,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = sysctl_schedstats,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
- },
-#endif /* CONFIG_SCHEDSTATS */
-#endif /* CONFIG_SMP */
-#ifdef CONFIG_NUMA_BALANCING
- {
- .procname = "numa_balancing_scan_delay_ms",
- .data = &sysctl_numa_balancing_scan_delay,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
- {
- .procname = "numa_balancing_scan_period_min_ms",
- .data = &sysctl_numa_balancing_scan_period_min,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
- {
- .procname = "numa_balancing_scan_period_max_ms",
- .data = &sysctl_numa_balancing_scan_period_max,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
- {
- .procname = "numa_balancing_scan_size_mb",
- .data = &sysctl_numa_balancing_scan_size,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ONE,
- },
- {
- .procname = "numa_balancing",
- .data = NULL, /* filled in by handler */
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = sysctl_numa_balancing,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
- },
-#endif /* CONFIG_NUMA_BALANCING */
-#endif /* CONFIG_SCHED_DEBUG */
- {
- .procname = "sched_rt_period_us",
- .data = &sysctl_sched_rt_period,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = sched_rt_handler,
- },
- {
- .procname = "sched_rt_runtime_us",
- .data = &sysctl_sched_rt_runtime,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = sched_rt_handler,
- },
- {
- .procname = "sched_rr_timeslice_ms",
- .data = &sysctl_sched_rr_timeslice,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = sched_rr_handler,
- },
-#ifdef CONFIG_UCLAMP_TASK
- {
- .procname = "sched_util_clamp_min",
- .data = &sysctl_sched_uclamp_util_min,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = sysctl_sched_uclamp_handler,
- },
- {
- .procname = "sched_util_clamp_max",
- .data = &sysctl_sched_uclamp_util_max,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = sysctl_sched_uclamp_handler,
- },
-#endif
-#ifdef CONFIG_SCHED_AUTOGROUP
- {
- .procname = "sched_autogroup_enabled",
- .data = &sysctl_sched_autogroup_enabled,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
- },
-#endif
-#ifdef CONFIG_CFS_BANDWIDTH
- {
- .procname = "sched_cfs_bandwidth_slice_us",
- .data = &sysctl_sched_cfs_bandwidth_slice,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ONE,
- },
-#endif
-#if defined(CONFIG_ENERGY_MODEL) && defined(CONFIG_CPU_FREQ_GOV_SCHEDUTIL)
- {
- .procname = "sched_energy_aware",
- .data = &sysctl_sched_energy_aware,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = sched_energy_aware_handler,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
- },
-#endif
-#ifdef CONFIG_PROVE_LOCKING
- {
- .procname = "prove_locking",
- .data = &prove_locking,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
-#endif
-#ifdef CONFIG_LOCK_STAT
- {
- .procname = "lock_stat",
- .data = &lock_stat,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
-#endif
- {
- .procname = "panic",
- .data = &panic_timeout,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
-#ifdef CONFIG_COREDUMP
- {
- .procname = "core_uses_pid",
- .data = &core_uses_pid,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
- {
- .procname = "core_pattern",
- .data = core_pattern,
- .maxlen = CORENAME_MAX_SIZE,
- .mode = 0644,
- .proc_handler = proc_dostring_coredump,
- },
- {
- .procname = "core_pipe_limit",
- .data = &core_pipe_limit,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
-#endif
-#ifdef CONFIG_PROC_SYSCTL
- {
- .procname = "tainted",
- .maxlen = sizeof(long),
- .mode = 0644,
- .proc_handler = proc_taint,
- },
- {
- .procname = "sysctl_writes_strict",
- .data = &sysctl_writes_strict,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = &neg_one,
- .extra2 = SYSCTL_ONE,
- },
-#endif
-#ifdef CONFIG_LATENCYTOP
- {
- .procname = "latencytop",
- .data = &latencytop_enabled,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = sysctl_latencytop,
- },
-#endif
-#ifdef CONFIG_BLK_DEV_INITRD
- {
- .procname = "real-root-dev",
- .data = &real_root_dev,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
-#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",
- .data = &pwrsw_enabled,
- .maxlen = sizeof (int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
-#endif
-#ifdef CONFIG_SYSCTL_ARCH_UNALIGN_ALLOW
- {
- .procname = "unaligned-trap",
- .data = &unaligned_enabled,
- .maxlen = sizeof (int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
-#endif
- {
- .procname = "ctrl-alt-del",
- .data = &C_A_D,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
-#ifdef CONFIG_FUNCTION_TRACER
- {
- .procname = "ftrace_enabled",
- .data = &ftrace_enabled,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = ftrace_enable_sysctl,
- },
-#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 = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
- {
- .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_KEXEC_CORE
- {
- .procname = "kexec_load_disabled",
- .data = &kexec_load_disabled,
- .maxlen = sizeof(int),
- .mode = 0644,
- /* only handle a transition from default "0" to "1" */
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ONE,
- .extra2 = SYSCTL_ONE,
- },
-#endif
-#ifdef CONFIG_MODULES
- {
- .procname = "modprobe",
- .data = &modprobe_path,
- .maxlen = KMOD_PATH_LEN,
- .mode = 0644,
- .proc_handler = proc_dostring,
- },
- {
- .procname = "modules_disabled",
- .data = &modules_disabled,
- .maxlen = sizeof(int),
- .mode = 0644,
- /* only handle a transition from default "0" to "1" */
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ONE,
- .extra2 = SYSCTL_ONE,
- },
-#endif
-#ifdef CONFIG_UEVENT_HELPER
- {
- .procname = "hotplug",
- .data = &uevent_helper,
- .maxlen = UEVENT_HELPER_PATH_LEN,
- .mode = 0644,
- .proc_handler = proc_dostring,
- },
-#endif
-#ifdef CONFIG_CHR_DEV_SG
- {
- .procname = "sg-big-buff",
- .data = &sg_big_buff,
- .maxlen = sizeof (int),
- .mode = 0444,
- .proc_handler = proc_dointvec,
- },
-#endif
-#ifdef CONFIG_BSD_PROCESS_ACCT
- {
- .procname = "acct",
- .data = &acct_parm,
- .maxlen = 3*sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
-#endif
-#ifdef CONFIG_MAGIC_SYSRQ
- {
- .procname = "sysrq",
- .data = NULL,
- .maxlen = sizeof (int),
- .mode = 0644,
- .proc_handler = sysrq_sysctl_handler,
- },
-#endif
-#ifdef CONFIG_PROC_SYSCTL
- {
- .procname = "cad_pid",
- .data = NULL,
- .maxlen = sizeof (int),
- .mode = 0600,
- .proc_handler = proc_do_cad_pid,
- },
-#endif
- {
- .procname = "threads-max",
- .data = NULL,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = sysctl_max_threads,
- },
- {
- .procname = "random",
- .mode = 0555,
- .child = random_table,
- },
- {
- .procname = "usermodehelper",
- .mode = 0555,
- .child = usermodehelper_table,
- },
-#ifdef CONFIG_FW_LOADER_USER_HELPER
- {
- .procname = "firmware_config",
- .mode = 0555,
- .child = firmware_config_table,
- },
-#endif
- {
- .procname = "overflowuid",
- .data = &overflowuid,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = &minolduid,
- .extra2 = &maxolduid,
- },
- {
- .procname = "overflowgid",
- .data = &overflowgid,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = &minolduid,
- .extra2 = &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,
- },
-#if defined CONFIG_PRINTK
- {
- .procname = "printk",
- .data = &console_loglevel,
- .maxlen = 4*sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
- {
- .procname = "printk_ratelimit",
- .data = &printk_ratelimit_state.interval,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec_jiffies,
- },
- {
- .procname = "printk_ratelimit_burst",
- .data = &printk_ratelimit_state.burst,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
- {
- .procname = "printk_delay",
- .data = &printk_delay_msec,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = &ten_thousand,
- },
- {
- .procname = "printk_devkmsg",
- .data = devkmsg_log_str,
- .maxlen = DEVKMSG_STR_MAX_SIZE,
- .mode = 0644,
- .proc_handler = devkmsg_sysctl_set_loglvl,
- },
- {
- .procname = "dmesg_restrict",
- .data = &dmesg_restrict,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax_sysadmin,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
- },
- {
- .procname = "kptr_restrict",
- .data = &kptr_restrict,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax_sysadmin,
- .extra1 = SYSCTL_ZERO,
- .extra2 = &two,
- },
-#endif
- {
- .procname = "ngroups_max",
- .data = &ngroups_max,
- .maxlen = sizeof (int),
- .mode = 0444,
- .proc_handler = proc_dointvec,
- },
- {
- .procname = "cap_last_cap",
- .data = (void *)&cap_last_cap,
- .maxlen = sizeof(int),
- .mode = 0444,
- .proc_handler = proc_dointvec,
- },
-#if defined(CONFIG_LOCKUP_DETECTOR)
- {
- .procname = "watchdog",
- .data = &watchdog_user_enabled,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_watchdog,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
- },
- {
- .procname = "watchdog_thresh",
- .data = &watchdog_thresh,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_watchdog_thresh,
- .extra1 = SYSCTL_ZERO,
- .extra2 = &sixty,
- },
- {
- .procname = "nmi_watchdog",
- .data = &nmi_watchdog_user_enabled,
- .maxlen = sizeof(int),
- .mode = NMI_WATCHDOG_SYSCTL_PERM,
- .proc_handler = proc_nmi_watchdog,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
- },
- {
- .procname = "watchdog_cpumask",
- .data = &watchdog_cpumask_bits,
- .maxlen = NR_CPUS,
- .mode = 0644,
- .proc_handler = proc_watchdog_cpumask,
- },
-#ifdef CONFIG_SOFTLOCKUP_DETECTOR
- {
- .procname = "soft_watchdog",
- .data = &soft_watchdog_user_enabled,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_soft_watchdog,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
- },
- {
- .procname = "softlockup_panic",
- .data = &softlockup_panic,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
- },
-#ifdef CONFIG_SMP
- {
- .procname = "softlockup_all_cpu_backtrace",
- .data = &sysctl_softlockup_all_cpu_backtrace,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
- },
-#endif /* CONFIG_SMP */
-#endif
-#ifdef CONFIG_HARDLOCKUP_DETECTOR
- {
- .procname = "hardlockup_panic",
- .data = &hardlockup_panic,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
- },
-#ifdef CONFIG_SMP
- {
- .procname = "hardlockup_all_cpu_backtrace",
- .data = &sysctl_hardlockup_all_cpu_backtrace,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
- },
-#endif /* CONFIG_SMP */
-#endif
-#endif
-
-#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)
- {
- .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,
- },
-#ifdef CONFIG_DEBUG_STACKOVERFLOW
- {
- .procname = "panic_on_stackoverflow",
- .data = &sysctl_panic_on_stackoverflow,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
-#endif
- {
- .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",
- .data = &randomize_va_space,
- .maxlen = sizeof(int),
- .mode = 0644,
- .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",
- .data = &no_unaligned_warning,
- .maxlen = sizeof (int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
-#endif
-#ifdef CONFIG_IA64
- {
- .procname = "unaligned-dump-stack",
- .data = &unaligned_dump_stack,
- .maxlen = sizeof (int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
-#endif
-#ifdef CONFIG_DETECT_HUNG_TASK
- {
- .procname = "hung_task_panic",
- .data = &sysctl_hung_task_panic,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
- },
- {
- .procname = "hung_task_check_count",
- .data = &sysctl_hung_task_check_count,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- },
- {
- .procname = "hung_task_timeout_secs",
- .data = &sysctl_hung_task_timeout_secs,
- .maxlen = sizeof(unsigned long),
- .mode = 0644,
- .proc_handler = proc_dohung_task_timeout_secs,
- .extra2 = &hung_task_timeout_max,
- },
- {
- .procname = "hung_task_check_interval_secs",
- .data = &sysctl_hung_task_check_interval_secs,
- .maxlen = sizeof(unsigned long),
- .mode = 0644,
- .proc_handler = proc_dohung_task_timeout_secs,
- .extra2 = &hung_task_timeout_max,
- },
- {
- .procname = "hung_task_warnings",
- .data = &sysctl_hung_task_warnings,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = &neg_one,
- },
-#endif
-#ifdef CONFIG_RT_MUTEXES
- {
- .procname = "max_lock_depth",
- .data = &max_lock_depth,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
-#endif
- {
- .procname = "poweroff_cmd",
- .data = &poweroff_cmd,
- .maxlen = POWEROFF_CMD_PATH_LEN,
- .mode = 0644,
- .proc_handler = proc_dostring,
- },
-#ifdef CONFIG_KEYS
- {
- .procname = "keys",
- .mode = 0555,
- .child = key_sysctls,
- },
-#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_proc_update_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 = &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 = &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 = &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,
- },
-#if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ_COMMON)
- {
- .procname = "timer_migration",
- .data = &sysctl_timer_migration,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = timer_migration_handler,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
- },
-#endif
-#ifdef CONFIG_BPF_SYSCALL
- {
- .procname = "unprivileged_bpf_disabled",
- .data = &sysctl_unprivileged_bpf_disabled,
- .maxlen = sizeof(sysctl_unprivileged_bpf_disabled),
- .mode = 0644,
- /* only handle a transition from default "0" to "1" */
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ONE,
- .extra2 = SYSCTL_ONE,
- },
- {
- .procname = "bpf_stats_enabled",
- .data = &bpf_stats_enabled_key.key,
- .maxlen = sizeof(bpf_stats_enabled_key),
- .mode = 0644,
- .proc_handler = proc_do_static_key,
- },
-#endif
-#if defined(CONFIG_TREE_RCU)
- {
- .procname = "panic_on_rcu_stall",
- .data = &sysctl_panic_on_rcu_stall,
- .maxlen = sizeof(sysctl_panic_on_rcu_stall),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
- },
-#endif
-#ifdef CONFIG_STACKLEAK_RUNTIME_DISABLE
- {
- .procname = "stack_erasing",
- .data = NULL,
- .maxlen = sizeof(int),
- .mode = 0600,
- .proc_handler = stack_erasing_sysctl,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
- },
-#endif
- { }
-};
-
-static struct ctl_table vm_table[] = {
- {
- .procname = "overcommit_memory",
- .data = &sysctl_overcommit_memory,
- .maxlen = sizeof(sysctl_overcommit_memory),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = &two,
- },
- {
- .procname = "panic_on_oom",
- .data = &sysctl_panic_on_oom,
- .maxlen = sizeof(sysctl_panic_on_oom),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = &two,
- },
- {
- .procname = "oom_kill_allocating_task",
- .data = &sysctl_oom_kill_allocating_task,
- .maxlen = sizeof(sysctl_oom_kill_allocating_task),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
- {
- .procname = "oom_dump_tasks",
- .data = &sysctl_oom_dump_tasks,
- .maxlen = sizeof(sysctl_oom_dump_tasks),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
- {
- .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,
- },
- {
- .procname = "dirty_background_ratio",
- .data = &dirty_background_ratio,
- .maxlen = sizeof(dirty_background_ratio),
- .mode = 0644,
- .proc_handler = dirty_background_ratio_handler,
- .extra1 = SYSCTL_ZERO,
- .extra2 = &one_hundred,
- },
- {
- .procname = "dirty_background_bytes",
- .data = &dirty_background_bytes,
- .maxlen = sizeof(dirty_background_bytes),
- .mode = 0644,
- .proc_handler = dirty_background_bytes_handler,
- .extra1 = &one_ul,
- },
- {
- .procname = "dirty_ratio",
- .data = &vm_dirty_ratio,
- .maxlen = sizeof(vm_dirty_ratio),
- .mode = 0644,
- .proc_handler = dirty_ratio_handler,
- .extra1 = SYSCTL_ZERO,
- .extra2 = &one_hundred,
- },
- {
- .procname = "dirty_bytes",
- .data = &vm_dirty_bytes,
- .maxlen = sizeof(vm_dirty_bytes),
- .mode = 0644,
- .proc_handler = dirty_bytes_handler,
- .extra1 = &dirty_bytes_min,
- },
- {
- .procname = "dirty_writeback_centisecs",
- .data = &dirty_writeback_interval,
- .maxlen = sizeof(dirty_writeback_interval),
- .mode = 0644,
- .proc_handler = dirty_writeback_centisecs_handler,
- },
- {
- .procname = "dirty_expire_centisecs",
- .data = &dirty_expire_interval,
- .maxlen = sizeof(dirty_expire_interval),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- },
- {
- .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 = &one_hundred,
- },
-#ifdef CONFIG_HUGETLB_PAGE
- {
- .procname = "nr_hugepages",
- .data = NULL,
- .maxlen = sizeof(unsigned long),
- .mode = 0644,
- .proc_handler = hugetlb_sysctl_handler,
- },
-#ifdef CONFIG_NUMA
- {
- .procname = "nr_hugepages_mempolicy",
- .data = NULL,
- .maxlen = sizeof(unsigned long),
- .mode = 0644,
- .proc_handler = &hugetlb_mempolicy_sysctl_handler,
- },
- {
- .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 = "hugetlb_shm_group",
- .data = &sysctl_hugetlb_shm_group,
- .maxlen = sizeof(gid_t),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
- {
- .procname = "nr_overcommit_hugepages",
- .data = NULL,
- .maxlen = sizeof(unsigned long),
- .mode = 0644,
- .proc_handler = hugetlb_overcommit_handler,
- },
-#endif
- {
- .procname = "lowmem_reserve_ratio",
- .data = &sysctl_lowmem_reserve_ratio,
- .maxlen = sizeof(sysctl_lowmem_reserve_ratio),
- .mode = 0644,
- .proc_handler = lowmem_reserve_ratio_sysctl_handler,
- },
- {
- .procname = "drop_caches",
- .data = &sysctl_drop_caches,
- .maxlen = sizeof(int),
- .mode = 0200,
- .proc_handler = drop_caches_sysctl_handler,
- .extra1 = SYSCTL_ONE,
- .extra2 = &four,
- },
-#ifdef CONFIG_COMPACTION
- {
- .procname = "compact_memory",
- .data = &sysctl_compact_memory,
- .maxlen = sizeof(int),
- .mode = 0200,
- .proc_handler = sysctl_compaction_handler,
- },
- {
- .procname = "extfrag_threshold",
- .data = &sysctl_extfrag_threshold,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = &min_extfrag_threshold,
- .extra2 = &max_extfrag_threshold,
- },
- {
- .procname = "compact_unevictable_allowed",
- .data = &sysctl_compact_unevictable_allowed,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax_warn_RT_change,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
- },
-
-#endif /* CONFIG_COMPACTION */
- {
- .procname = "min_free_kbytes",
- .data = &min_free_kbytes,
- .maxlen = sizeof(min_free_kbytes),
- .mode = 0644,
- .proc_handler = min_free_kbytes_sysctl_handler,
- .extra1 = SYSCTL_ZERO,
- },
- {
- .procname = "watermark_boost_factor",
- .data = &watermark_boost_factor,
- .maxlen = sizeof(watermark_boost_factor),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- },
- {
- .procname = "watermark_scale_factor",
- .data = &watermark_scale_factor,
- .maxlen = sizeof(watermark_scale_factor),
- .mode = 0644,
- .proc_handler = watermark_scale_factor_sysctl_handler,
- .extra1 = SYSCTL_ONE,
- .extra2 = &one_thousand,
- },
- {
- .procname = "percpu_pagelist_fraction",
- .data = &percpu_pagelist_fraction,
- .maxlen = sizeof(percpu_pagelist_fraction),
- .mode = 0644,
- .proc_handler = percpu_pagelist_fraction_sysctl_handler,
- .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 = "laptop_mode",
- .data = &laptop_mode,
- .maxlen = sizeof(laptop_mode),
- .mode = 0644,
- .proc_handler = proc_dointvec_jiffies,
- },
- {
- .procname = "block_dump",
- .data = &block_dump,
- .maxlen = sizeof(block_dump),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- .extra1 = SYSCTL_ZERO,
- },
- {
- .procname = "vfs_cache_pressure",
- .data = &sysctl_vfs_cache_pressure,
- .maxlen = sizeof(sysctl_vfs_cache_pressure),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- .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,
- .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,
- .extra1 = SYSCTL_ZERO,
- },
- {
- .procname = "min_unmapped_ratio",
- .data = &sysctl_min_unmapped_ratio,
- .maxlen = sizeof(sysctl_min_unmapped_ratio),
- .mode = 0644,
- .proc_handler = sysctl_min_unmapped_ratio_sysctl_handler,
- .extra1 = SYSCTL_ZERO,
- .extra2 = &one_hundred,
- },
- {
- .procname = "min_slab_ratio",
- .data = &sysctl_min_slab_ratio,
- .maxlen = sizeof(sysctl_min_slab_ratio),
- .mode = 0644,
- .proc_handler = sysctl_min_slab_ratio_sysctl_handler,
- .extra1 = SYSCTL_ZERO,
- .extra2 = &one_hundred,
- },
-#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
-#ifdef CONFIG_NUMA
- {
- .procname = "numa_zonelist_order",
- .data = &numa_zonelist_order,
- .maxlen = NUMA_ZONELIST_ORDER_LEN,
- .mode = 0644,
- .proc_handler = numa_zonelist_order_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
-#ifdef CONFIG_HIGHMEM
- {
- .procname = "highmem_is_dirtyable",
- .data = &vm_highmem_is_dirtyable,
- .maxlen = sizeof(vm_highmem_is_dirtyable),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
- },
-#endif
-#ifdef CONFIG_MEMORY_FAILURE
- {
- .procname = "memory_failure_early_kill",
- .data = &sysctl_memory_failure_early_kill,
- .maxlen = sizeof(sysctl_memory_failure_early_kill),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
- },
- {
- .procname = "memory_failure_recovery",
- .data = &sysctl_memory_failure_recovery,
- .maxlen = sizeof(sysctl_memory_failure_recovery),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
- },
-#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
-#ifdef CONFIG_USERFAULTFD
- {
- .procname = "unprivileged_userfaultfd",
- .data = &sysctl_unprivileged_userfaultfd,
- .maxlen = sizeof(sysctl_unprivileged_userfaultfd),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
- },
-#endif
- { }
-};
-
-static struct ctl_table fs_table[] = {
- {
- .procname = "inode-nr",
- .data = &inodes_stat,
- .maxlen = 2*sizeof(long),
- .mode = 0444,
- .proc_handler = proc_nr_inodes,
- },
- {
- .procname = "inode-state",
- .data = &inodes_stat,
- .maxlen = 7*sizeof(long),
- .mode = 0444,
- .proc_handler = proc_nr_inodes,
- },
- {
- .procname = "file-nr",
- .data = &files_stat,
- .maxlen = sizeof(files_stat),
- .mode = 0444,
- .proc_handler = proc_nr_files,
- },
- {
- .procname = "file-max",
- .data = &files_stat.max_files,
- .maxlen = sizeof(files_stat.max_files),
- .mode = 0644,
- .proc_handler = proc_doulongvec_minmax,
- .extra1 = &zero_ul,
- .extra2 = &long_max,
- },
- {
- .procname = "nr_open",
- .data = &sysctl_nr_open,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = &sysctl_nr_open_min,
- .extra2 = &sysctl_nr_open_max,
- },
- {
- .procname = "dentry-state",
- .data = &dentry_stat,
- .maxlen = 6*sizeof(long),
- .mode = 0444,
- .proc_handler = proc_nr_dentry,
- },
- {
- .procname = "overflowuid",
- .data = &fs_overflowuid,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = &minolduid,
- .extra2 = &maxolduid,
- },
- {
- .procname = "overflowgid",
- .data = &fs_overflowgid,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = &minolduid,
- .extra2 = &maxolduid,
- },
-#ifdef CONFIG_FILE_LOCKING
- {
- .procname = "leases-enable",
- .data = &leases_enable,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
-#endif
-#ifdef CONFIG_DNOTIFY
- {
- .procname = "dir-notify-enable",
- .data = &dir_notify_enable,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
-#endif
-#ifdef CONFIG_MMU
-#ifdef CONFIG_FILE_LOCKING
- {
- .procname = "lease-break-time",
- .data = &lease_break_time,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
-#endif
-#ifdef CONFIG_AIO
- {
- .procname = "aio-nr",
- .data = &aio_nr,
- .maxlen = sizeof(aio_nr),
- .mode = 0444,
- .proc_handler = proc_doulongvec_minmax,
- },
- {
- .procname = "aio-max-nr",
- .data = &aio_max_nr,
- .maxlen = sizeof(aio_max_nr),
- .mode = 0644,
- .proc_handler = proc_doulongvec_minmax,
- },
-#endif /* CONFIG_AIO */
-#ifdef CONFIG_INOTIFY_USER
- {
- .procname = "inotify",
- .mode = 0555,
- .child = inotify_table,
- },
-#endif
-#ifdef CONFIG_EPOLL
- {
- .procname = "epoll",
- .mode = 0555,
- .child = epoll_table,
- },
-#endif
-#endif
- {
- .procname = "protected_symlinks",
- .data = &sysctl_protected_symlinks,
- .maxlen = sizeof(int),
- .mode = 0600,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
- },
- {
- .procname = "protected_hardlinks",
- .data = &sysctl_protected_hardlinks,
- .maxlen = sizeof(int),
- .mode = 0600,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
- },
- {
- .procname = "protected_fifos",
- .data = &sysctl_protected_fifos,
- .maxlen = sizeof(int),
- .mode = 0600,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = &two,
- },
- {
- .procname = "protected_regular",
- .data = &sysctl_protected_regular,
- .maxlen = sizeof(int),
- .mode = 0600,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = &two,
- },
- {
- .procname = "suid_dumpable",
- .data = &suid_dumpable,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax_coredump,
- .extra1 = SYSCTL_ZERO,
- .extra2 = &two,
- },
-#if defined(CONFIG_BINFMT_MISC) || defined(CONFIG_BINFMT_MISC_MODULE)
- {
- .procname = "binfmt_misc",
- .mode = 0555,
- .child = sysctl_mount_point,
- },
-#endif
- {
- .procname = "pipe-max-size",
- .data = &pipe_max_size,
- .maxlen = sizeof(pipe_max_size),
- .mode = 0644,
- .proc_handler = proc_dopipe_max_size,
- },
- {
- .procname = "pipe-user-pages-hard",
- .data = &pipe_user_pages_hard,
- .maxlen = sizeof(pipe_user_pages_hard),
- .mode = 0644,
- .proc_handler = proc_doulongvec_minmax,
- },
- {
- .procname = "pipe-user-pages-soft",
- .data = &pipe_user_pages_soft,
- .maxlen = sizeof(pipe_user_pages_soft),
- .mode = 0644,
- .proc_handler = proc_doulongvec_minmax,
- },
- {
- .procname = "mount-max",
- .data = &sysctl_mount_max,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ONE,
- },
- { }
-};
-
-static struct ctl_table debug_table[] = {
-#ifdef CONFIG_SYSCTL_EXCEPTION_TRACE
- {
- .procname = "exception-trace",
- .data = &show_unhandled_signals,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec
- },
-#endif
-#if defined(CONFIG_OPTPROBES)
- {
- .procname = "kprobes-optimization",
- .data = &sysctl_kprobes_optimization,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_kprobes_optimization_handler,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
- },
-#endif
- { }
-};
-
-static struct ctl_table dev_table[] = {
- { }
-};
-
-int __init sysctl_init(void)
-{
- struct ctl_table_header *hdr;
-
- hdr = register_sysctl_table(sysctl_base_table);
- kmemleak_not_leak(hdr);
- return 0;
-}
-
-#endif /* CONFIG_SYSCTL */
-
-/*
- * /proc/sys support
- */
-
+#endif /* CONFIG_SYSCTL */
+
+/*
+ * /proc/sys support
+ */
+
#ifdef CONFIG_PROC_SYSCTL
static int _proc_do_string(char *data, int maxlen, int write,
@@ -3307,95 +1577,1788 @@ int proc_dointvec(struct ctl_table *table, int write,
return -ENOSYS;
}
-int proc_douintvec(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
+int proc_douintvec(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ return -ENOSYS;
+}
+
+int proc_dointvec_minmax(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ return -ENOSYS;
+}
+
+int proc_douintvec_minmax(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ return -ENOSYS;
+}
+
+int proc_dointvec_jiffies(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ return -ENOSYS;
+}
+
+int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ return -ENOSYS;
+}
+
+int proc_dointvec_ms_jiffies(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
{
return -ENOSYS;
}
-int proc_dointvec_minmax(struct ctl_table *table, int write,
+int proc_doulongvec_minmax(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
return -ENOSYS;
}
-int proc_douintvec_minmax(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
+int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write,
+ void __user *buffer,
+ size_t *lenp, loff_t *ppos)
{
- return -ENOSYS;
+ return -ENOSYS;
}
-int proc_dointvec_jiffies(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
+int proc_do_large_bitmap(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
{
return -ENOSYS;
}
-int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
-{
- return -ENOSYS;
-}
+#endif /* CONFIG_PROC_SYSCTL */
+
+#if defined(CONFIG_SYSCTL)
+int proc_do_static_key(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp,
+ loff_t *ppos)
+{
+ struct static_key *key = (struct static_key *)table->data;
+ static DEFINE_MUTEX(static_key_mutex);
+ int val, ret;
+ struct ctl_table tmp = {
+ .data = &val,
+ .maxlen = sizeof(val),
+ .mode = table->mode,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ };
+
+ if (write && !capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ mutex_lock(&static_key_mutex);
+ val = static_key_enabled(key);
+ ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos);
+ if (write && !ret) {
+ if (val)
+ static_key_enable(key);
+ else
+ static_key_disable(key);
+ }
+ mutex_unlock(&static_key_mutex);
+ return ret;
+}
+
+static struct ctl_table kern_table[] = {
+ {
+ .procname = "sched_child_runs_first",
+ .data = &sysctl_sched_child_runs_first,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+#ifdef CONFIG_SCHED_DEBUG
+ {
+ .procname = "sched_min_granularity_ns",
+ .data = &sysctl_sched_min_granularity,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = sched_proc_update_handler,
+ .extra1 = &min_sched_granularity_ns,
+ .extra2 = &max_sched_granularity_ns,
+ },
+ {
+ .procname = "sched_latency_ns",
+ .data = &sysctl_sched_latency,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = sched_proc_update_handler,
+ .extra1 = &min_sched_granularity_ns,
+ .extra2 = &max_sched_granularity_ns,
+ },
+ {
+ .procname = "sched_wakeup_granularity_ns",
+ .data = &sysctl_sched_wakeup_granularity,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = sched_proc_update_handler,
+ .extra1 = &min_wakeup_granularity_ns,
+ .extra2 = &max_wakeup_granularity_ns,
+ },
+#ifdef CONFIG_SMP
+ {
+ .procname = "sched_tunable_scaling",
+ .data = &sysctl_sched_tunable_scaling,
+ .maxlen = sizeof(enum sched_tunable_scaling),
+ .mode = 0644,
+ .proc_handler = sched_proc_update_handler,
+ .extra1 = &min_sched_tunable_scaling,
+ .extra2 = &max_sched_tunable_scaling,
+ },
+ {
+ .procname = "sched_migration_cost_ns",
+ .data = &sysctl_sched_migration_cost,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ {
+ .procname = "sched_nr_migrate",
+ .data = &sysctl_sched_nr_migrate,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+#ifdef CONFIG_SCHEDSTATS
+ {
+ .procname = "sched_schedstats",
+ .data = NULL,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = sysctl_schedstats,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+#endif /* CONFIG_SCHEDSTATS */
+#endif /* CONFIG_SMP */
+#ifdef CONFIG_NUMA_BALANCING
+ {
+ .procname = "numa_balancing_scan_delay_ms",
+ .data = &sysctl_numa_balancing_scan_delay,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ {
+ .procname = "numa_balancing_scan_period_min_ms",
+ .data = &sysctl_numa_balancing_scan_period_min,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ {
+ .procname = "numa_balancing_scan_period_max_ms",
+ .data = &sysctl_numa_balancing_scan_period_max,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ {
+ .procname = "numa_balancing_scan_size_mb",
+ .data = &sysctl_numa_balancing_scan_size,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ONE,
+ },
+ {
+ .procname = "numa_balancing",
+ .data = NULL, /* filled in by handler */
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = sysctl_numa_balancing,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+#endif /* CONFIG_NUMA_BALANCING */
+#endif /* CONFIG_SCHED_DEBUG */
+ {
+ .procname = "sched_rt_period_us",
+ .data = &sysctl_sched_rt_period,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = sched_rt_handler,
+ },
+ {
+ .procname = "sched_rt_runtime_us",
+ .data = &sysctl_sched_rt_runtime,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = sched_rt_handler,
+ },
+ {
+ .procname = "sched_rr_timeslice_ms",
+ .data = &sysctl_sched_rr_timeslice,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = sched_rr_handler,
+ },
+#ifdef CONFIG_UCLAMP_TASK
+ {
+ .procname = "sched_util_clamp_min",
+ .data = &sysctl_sched_uclamp_util_min,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = sysctl_sched_uclamp_handler,
+ },
+ {
+ .procname = "sched_util_clamp_max",
+ .data = &sysctl_sched_uclamp_util_max,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = sysctl_sched_uclamp_handler,
+ },
+#endif
+#ifdef CONFIG_SCHED_AUTOGROUP
+ {
+ .procname = "sched_autogroup_enabled",
+ .data = &sysctl_sched_autogroup_enabled,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+#endif
+#ifdef CONFIG_CFS_BANDWIDTH
+ {
+ .procname = "sched_cfs_bandwidth_slice_us",
+ .data = &sysctl_sched_cfs_bandwidth_slice,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ONE,
+ },
+#endif
+#if defined(CONFIG_ENERGY_MODEL) && defined(CONFIG_CPU_FREQ_GOV_SCHEDUTIL)
+ {
+ .procname = "sched_energy_aware",
+ .data = &sysctl_sched_energy_aware,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = sched_energy_aware_handler,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+#endif
+#ifdef CONFIG_PROVE_LOCKING
+ {
+ .procname = "prove_locking",
+ .data = &prove_locking,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+#endif
+#ifdef CONFIG_LOCK_STAT
+ {
+ .procname = "lock_stat",
+ .data = &lock_stat,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+#endif
+ {
+ .procname = "panic",
+ .data = &panic_timeout,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+#ifdef CONFIG_COREDUMP
+ {
+ .procname = "core_uses_pid",
+ .data = &core_uses_pid,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ {
+ .procname = "core_pattern",
+ .data = core_pattern,
+ .maxlen = CORENAME_MAX_SIZE,
+ .mode = 0644,
+ .proc_handler = proc_dostring_coredump,
+ },
+ {
+ .procname = "core_pipe_limit",
+ .data = &core_pipe_limit,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+#endif
+#ifdef CONFIG_PROC_SYSCTL
+ {
+ .procname = "tainted",
+ .maxlen = sizeof(long),
+ .mode = 0644,
+ .proc_handler = proc_taint,
+ },
+ {
+ .procname = "sysctl_writes_strict",
+ .data = &sysctl_writes_strict,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &neg_one,
+ .extra2 = SYSCTL_ONE,
+ },
+#endif
+#ifdef CONFIG_LATENCYTOP
+ {
+ .procname = "latencytop",
+ .data = &latencytop_enabled,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = sysctl_latencytop,
+ },
+#endif
+#ifdef CONFIG_BLK_DEV_INITRD
+ {
+ .procname = "real-root-dev",
+ .data = &real_root_dev,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+#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",
+ .data = &pwrsw_enabled,
+ .maxlen = sizeof (int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+#endif
+#ifdef CONFIG_SYSCTL_ARCH_UNALIGN_ALLOW
+ {
+ .procname = "unaligned-trap",
+ .data = &unaligned_enabled,
+ .maxlen = sizeof (int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+#endif
+ {
+ .procname = "ctrl-alt-del",
+ .data = &C_A_D,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+#ifdef CONFIG_FUNCTION_TRACER
+ {
+ .procname = "ftrace_enabled",
+ .data = &ftrace_enabled,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = ftrace_enable_sysctl,
+ },
+#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 = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ {
+ .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_KEXEC_CORE
+ {
+ .procname = "kexec_load_disabled",
+ .data = &kexec_load_disabled,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ /* only handle a transition from default "0" to "1" */
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ONE,
+ .extra2 = SYSCTL_ONE,
+ },
+#endif
+#ifdef CONFIG_MODULES
+ {
+ .procname = "modprobe",
+ .data = &modprobe_path,
+ .maxlen = KMOD_PATH_LEN,
+ .mode = 0644,
+ .proc_handler = proc_dostring,
+ },
+ {
+ .procname = "modules_disabled",
+ .data = &modules_disabled,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ /* only handle a transition from default "0" to "1" */
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ONE,
+ .extra2 = SYSCTL_ONE,
+ },
+#endif
+#ifdef CONFIG_UEVENT_HELPER
+ {
+ .procname = "hotplug",
+ .data = &uevent_helper,
+ .maxlen = UEVENT_HELPER_PATH_LEN,
+ .mode = 0644,
+ .proc_handler = proc_dostring,
+ },
+#endif
+#ifdef CONFIG_CHR_DEV_SG
+ {
+ .procname = "sg-big-buff",
+ .data = &sg_big_buff,
+ .maxlen = sizeof (int),
+ .mode = 0444,
+ .proc_handler = proc_dointvec,
+ },
+#endif
+#ifdef CONFIG_BSD_PROCESS_ACCT
+ {
+ .procname = "acct",
+ .data = &acct_parm,
+ .maxlen = 3*sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+#endif
+#ifdef CONFIG_MAGIC_SYSRQ
+ {
+ .procname = "sysrq",
+ .data = NULL,
+ .maxlen = sizeof (int),
+ .mode = 0644,
+ .proc_handler = sysrq_sysctl_handler,
+ },
+#endif
+#ifdef CONFIG_PROC_SYSCTL
+ {
+ .procname = "cad_pid",
+ .data = NULL,
+ .maxlen = sizeof (int),
+ .mode = 0600,
+ .proc_handler = proc_do_cad_pid,
+ },
+#endif
+ {
+ .procname = "threads-max",
+ .data = NULL,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = sysctl_max_threads,
+ },
+ {
+ .procname = "random",
+ .mode = 0555,
+ .child = random_table,
+ },
+ {
+ .procname = "usermodehelper",
+ .mode = 0555,
+ .child = usermodehelper_table,
+ },
+#ifdef CONFIG_FW_LOADER_USER_HELPER
+ {
+ .procname = "firmware_config",
+ .mode = 0555,
+ .child = firmware_config_table,
+ },
+#endif
+ {
+ .procname = "overflowuid",
+ .data = &overflowuid,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &minolduid,
+ .extra2 = &maxolduid,
+ },
+ {
+ .procname = "overflowgid",
+ .data = &overflowgid,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &minolduid,
+ .extra2 = &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,
+ },
+#if defined CONFIG_PRINTK
+ {
+ .procname = "printk",
+ .data = &console_loglevel,
+ .maxlen = 4*sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ {
+ .procname = "printk_ratelimit",
+ .data = &printk_ratelimit_state.interval,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_jiffies,
+ },
+ {
+ .procname = "printk_ratelimit_burst",
+ .data = &printk_ratelimit_state.burst,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ {
+ .procname = "printk_delay",
+ .data = &printk_delay_msec,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = &ten_thousand,
+ },
+ {
+ .procname = "printk_devkmsg",
+ .data = devkmsg_log_str,
+ .maxlen = DEVKMSG_STR_MAX_SIZE,
+ .mode = 0644,
+ .proc_handler = devkmsg_sysctl_set_loglvl,
+ },
+ {
+ .procname = "dmesg_restrict",
+ .data = &dmesg_restrict,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax_sysadmin,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+ {
+ .procname = "kptr_restrict",
+ .data = &kptr_restrict,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax_sysadmin,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = &two,
+ },
+#endif
+ {
+ .procname = "ngroups_max",
+ .data = &ngroups_max,
+ .maxlen = sizeof (int),
+ .mode = 0444,
+ .proc_handler = proc_dointvec,
+ },
+ {
+ .procname = "cap_last_cap",
+ .data = (void *)&cap_last_cap,
+ .maxlen = sizeof(int),
+ .mode = 0444,
+ .proc_handler = proc_dointvec,
+ },
+#if defined(CONFIG_LOCKUP_DETECTOR)
+ {
+ .procname = "watchdog",
+ .data = &watchdog_user_enabled,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_watchdog,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+ {
+ .procname = "watchdog_thresh",
+ .data = &watchdog_thresh,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_watchdog_thresh,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = &sixty,
+ },
+ {
+ .procname = "nmi_watchdog",
+ .data = &nmi_watchdog_user_enabled,
+ .maxlen = sizeof(int),
+ .mode = NMI_WATCHDOG_SYSCTL_PERM,
+ .proc_handler = proc_nmi_watchdog,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+ {
+ .procname = "watchdog_cpumask",
+ .data = &watchdog_cpumask_bits,
+ .maxlen = NR_CPUS,
+ .mode = 0644,
+ .proc_handler = proc_watchdog_cpumask,
+ },
+#ifdef CONFIG_SOFTLOCKUP_DETECTOR
+ {
+ .procname = "soft_watchdog",
+ .data = &soft_watchdog_user_enabled,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_soft_watchdog,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+ {
+ .procname = "softlockup_panic",
+ .data = &softlockup_panic,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+#ifdef CONFIG_SMP
+ {
+ .procname = "softlockup_all_cpu_backtrace",
+ .data = &sysctl_softlockup_all_cpu_backtrace,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+#endif /* CONFIG_SMP */
+#endif
+#ifdef CONFIG_HARDLOCKUP_DETECTOR
+ {
+ .procname = "hardlockup_panic",
+ .data = &hardlockup_panic,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+#ifdef CONFIG_SMP
+ {
+ .procname = "hardlockup_all_cpu_backtrace",
+ .data = &sysctl_hardlockup_all_cpu_backtrace,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+#endif /* CONFIG_SMP */
+#endif
+#endif
+
+#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)
+ {
+ .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,
+ },
+#ifdef CONFIG_DEBUG_STACKOVERFLOW
+ {
+ .procname = "panic_on_stackoverflow",
+ .data = &sysctl_panic_on_stackoverflow,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+#endif
+ {
+ .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",
+ .data = &randomize_va_space,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .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",
+ .data = &no_unaligned_warning,
+ .maxlen = sizeof (int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+#endif
+#ifdef CONFIG_IA64
+ {
+ .procname = "unaligned-dump-stack",
+ .data = &unaligned_dump_stack,
+ .maxlen = sizeof (int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+#endif
+#ifdef CONFIG_DETECT_HUNG_TASK
+ {
+ .procname = "hung_task_panic",
+ .data = &sysctl_hung_task_panic,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+ {
+ .procname = "hung_task_check_count",
+ .data = &sysctl_hung_task_check_count,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ },
+ {
+ .procname = "hung_task_timeout_secs",
+ .data = &sysctl_hung_task_timeout_secs,
+ .maxlen = sizeof(unsigned long),
+ .mode = 0644,
+ .proc_handler = proc_dohung_task_timeout_secs,
+ .extra2 = &hung_task_timeout_max,
+ },
+ {
+ .procname = "hung_task_check_interval_secs",
+ .data = &sysctl_hung_task_check_interval_secs,
+ .maxlen = sizeof(unsigned long),
+ .mode = 0644,
+ .proc_handler = proc_dohung_task_timeout_secs,
+ .extra2 = &hung_task_timeout_max,
+ },
+ {
+ .procname = "hung_task_warnings",
+ .data = &sysctl_hung_task_warnings,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &neg_one,
+ },
+#endif
+#ifdef CONFIG_RT_MUTEXES
+ {
+ .procname = "max_lock_depth",
+ .data = &max_lock_depth,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+#endif
+ {
+ .procname = "poweroff_cmd",
+ .data = &poweroff_cmd,
+ .maxlen = POWEROFF_CMD_PATH_LEN,
+ .mode = 0644,
+ .proc_handler = proc_dostring,
+ },
+#ifdef CONFIG_KEYS
+ {
+ .procname = "keys",
+ .mode = 0555,
+ .child = key_sysctls,
+ },
+#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_proc_update_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 = &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 = &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 = &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,
+ },
+#if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ_COMMON)
+ {
+ .procname = "timer_migration",
+ .data = &sysctl_timer_migration,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = timer_migration_handler,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+#endif
+#ifdef CONFIG_BPF_SYSCALL
+ {
+ .procname = "unprivileged_bpf_disabled",
+ .data = &sysctl_unprivileged_bpf_disabled,
+ .maxlen = sizeof(sysctl_unprivileged_bpf_disabled),
+ .mode = 0644,
+ /* only handle a transition from default "0" to "1" */
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ONE,
+ .extra2 = SYSCTL_ONE,
+ },
+ {
+ .procname = "bpf_stats_enabled",
+ .data = &bpf_stats_enabled_key.key,
+ .maxlen = sizeof(bpf_stats_enabled_key),
+ .mode = 0644,
+ .proc_handler = proc_do_static_key,
+ },
+#endif
+#if defined(CONFIG_TREE_RCU)
+ {
+ .procname = "panic_on_rcu_stall",
+ .data = &sysctl_panic_on_rcu_stall,
+ .maxlen = sizeof(sysctl_panic_on_rcu_stall),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+#endif
+#ifdef CONFIG_STACKLEAK_RUNTIME_DISABLE
+ {
+ .procname = "stack_erasing",
+ .data = NULL,
+ .maxlen = sizeof(int),
+ .mode = 0600,
+ .proc_handler = stack_erasing_sysctl,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+#endif
+ { }
+};
-int proc_dointvec_ms_jiffies(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
-{
- return -ENOSYS;
-}
+static struct ctl_table vm_table[] = {
+ {
+ .procname = "overcommit_memory",
+ .data = &sysctl_overcommit_memory,
+ .maxlen = sizeof(sysctl_overcommit_memory),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = &two,
+ },
+ {
+ .procname = "panic_on_oom",
+ .data = &sysctl_panic_on_oom,
+ .maxlen = sizeof(sysctl_panic_on_oom),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = &two,
+ },
+ {
+ .procname = "oom_kill_allocating_task",
+ .data = &sysctl_oom_kill_allocating_task,
+ .maxlen = sizeof(sysctl_oom_kill_allocating_task),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ {
+ .procname = "oom_dump_tasks",
+ .data = &sysctl_oom_dump_tasks,
+ .maxlen = sizeof(sysctl_oom_dump_tasks),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ {
+ .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,
+ },
+ {
+ .procname = "dirty_background_ratio",
+ .data = &dirty_background_ratio,
+ .maxlen = sizeof(dirty_background_ratio),
+ .mode = 0644,
+ .proc_handler = dirty_background_ratio_handler,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = &one_hundred,
+ },
+ {
+ .procname = "dirty_background_bytes",
+ .data = &dirty_background_bytes,
+ .maxlen = sizeof(dirty_background_bytes),
+ .mode = 0644,
+ .proc_handler = dirty_background_bytes_handler,
+ .extra1 = &one_ul,
+ },
+ {
+ .procname = "dirty_ratio",
+ .data = &vm_dirty_ratio,
+ .maxlen = sizeof(vm_dirty_ratio),
+ .mode = 0644,
+ .proc_handler = dirty_ratio_handler,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = &one_hundred,
+ },
+ {
+ .procname = "dirty_bytes",
+ .data = &vm_dirty_bytes,
+ .maxlen = sizeof(vm_dirty_bytes),
+ .mode = 0644,
+ .proc_handler = dirty_bytes_handler,
+ .extra1 = &dirty_bytes_min,
+ },
+ {
+ .procname = "dirty_writeback_centisecs",
+ .data = &dirty_writeback_interval,
+ .maxlen = sizeof(dirty_writeback_interval),
+ .mode = 0644,
+ .proc_handler = dirty_writeback_centisecs_handler,
+ },
+ {
+ .procname = "dirty_expire_centisecs",
+ .data = &dirty_expire_interval,
+ .maxlen = sizeof(dirty_expire_interval),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ },
+ {
+ .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 = &one_hundred,
+ },
+#ifdef CONFIG_HUGETLB_PAGE
+ {
+ .procname = "nr_hugepages",
+ .data = NULL,
+ .maxlen = sizeof(unsigned long),
+ .mode = 0644,
+ .proc_handler = hugetlb_sysctl_handler,
+ },
+#ifdef CONFIG_NUMA
+ {
+ .procname = "nr_hugepages_mempolicy",
+ .data = NULL,
+ .maxlen = sizeof(unsigned long),
+ .mode = 0644,
+ .proc_handler = &hugetlb_mempolicy_sysctl_handler,
+ },
+ {
+ .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 = "hugetlb_shm_group",
+ .data = &sysctl_hugetlb_shm_group,
+ .maxlen = sizeof(gid_t),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ {
+ .procname = "nr_overcommit_hugepages",
+ .data = NULL,
+ .maxlen = sizeof(unsigned long),
+ .mode = 0644,
+ .proc_handler = hugetlb_overcommit_handler,
+ },
+#endif
+ {
+ .procname = "lowmem_reserve_ratio",
+ .data = &sysctl_lowmem_reserve_ratio,
+ .maxlen = sizeof(sysctl_lowmem_reserve_ratio),
+ .mode = 0644,
+ .proc_handler = lowmem_reserve_ratio_sysctl_handler,
+ },
+ {
+ .procname = "drop_caches",
+ .data = &sysctl_drop_caches,
+ .maxlen = sizeof(int),
+ .mode = 0200,
+ .proc_handler = drop_caches_sysctl_handler,
+ .extra1 = SYSCTL_ONE,
+ .extra2 = &four,
+ },
+#ifdef CONFIG_COMPACTION
+ {
+ .procname = "compact_memory",
+ .data = &sysctl_compact_memory,
+ .maxlen = sizeof(int),
+ .mode = 0200,
+ .proc_handler = sysctl_compaction_handler,
+ },
+ {
+ .procname = "extfrag_threshold",
+ .data = &sysctl_extfrag_threshold,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &min_extfrag_threshold,
+ .extra2 = &max_extfrag_threshold,
+ },
+ {
+ .procname = "compact_unevictable_allowed",
+ .data = &sysctl_compact_unevictable_allowed,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax_warn_RT_change,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+
+#endif /* CONFIG_COMPACTION */
+ {
+ .procname = "min_free_kbytes",
+ .data = &min_free_kbytes,
+ .maxlen = sizeof(min_free_kbytes),
+ .mode = 0644,
+ .proc_handler = min_free_kbytes_sysctl_handler,
+ .extra1 = SYSCTL_ZERO,
+ },
+ {
+ .procname = "watermark_boost_factor",
+ .data = &watermark_boost_factor,
+ .maxlen = sizeof(watermark_boost_factor),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ },
+ {
+ .procname = "watermark_scale_factor",
+ .data = &watermark_scale_factor,
+ .maxlen = sizeof(watermark_scale_factor),
+ .mode = 0644,
+ .proc_handler = watermark_scale_factor_sysctl_handler,
+ .extra1 = SYSCTL_ONE,
+ .extra2 = &one_thousand,
+ },
+ {
+ .procname = "percpu_pagelist_fraction",
+ .data = &percpu_pagelist_fraction,
+ .maxlen = sizeof(percpu_pagelist_fraction),
+ .mode = 0644,
+ .proc_handler = percpu_pagelist_fraction_sysctl_handler,
+ .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 = "laptop_mode",
+ .data = &laptop_mode,
+ .maxlen = sizeof(laptop_mode),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_jiffies,
+ },
+ {
+ .procname = "block_dump",
+ .data = &block_dump,
+ .maxlen = sizeof(block_dump),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ .extra1 = SYSCTL_ZERO,
+ },
+ {
+ .procname = "vfs_cache_pressure",
+ .data = &sysctl_vfs_cache_pressure,
+ .maxlen = sizeof(sysctl_vfs_cache_pressure),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ .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,
+ .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,
+ .extra1 = SYSCTL_ZERO,
+ },
+ {
+ .procname = "min_unmapped_ratio",
+ .data = &sysctl_min_unmapped_ratio,
+ .maxlen = sizeof(sysctl_min_unmapped_ratio),
+ .mode = 0644,
+ .proc_handler = sysctl_min_unmapped_ratio_sysctl_handler,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = &one_hundred,
+ },
+ {
+ .procname = "min_slab_ratio",
+ .data = &sysctl_min_slab_ratio,
+ .maxlen = sizeof(sysctl_min_slab_ratio),
+ .mode = 0644,
+ .proc_handler = sysctl_min_slab_ratio_sysctl_handler,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = &one_hundred,
+ },
+#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
+#ifdef CONFIG_NUMA
+ {
+ .procname = "numa_zonelist_order",
+ .data = &numa_zonelist_order,
+ .maxlen = NUMA_ZONELIST_ORDER_LEN,
+ .mode = 0644,
+ .proc_handler = numa_zonelist_order_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
+#ifdef CONFIG_HIGHMEM
+ {
+ .procname = "highmem_is_dirtyable",
+ .data = &vm_highmem_is_dirtyable,
+ .maxlen = sizeof(vm_highmem_is_dirtyable),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+#endif
+#ifdef CONFIG_MEMORY_FAILURE
+ {
+ .procname = "memory_failure_early_kill",
+ .data = &sysctl_memory_failure_early_kill,
+ .maxlen = sizeof(sysctl_memory_failure_early_kill),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+ {
+ .procname = "memory_failure_recovery",
+ .data = &sysctl_memory_failure_recovery,
+ .maxlen = sizeof(sysctl_memory_failure_recovery),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+#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
+#ifdef CONFIG_USERFAULTFD
+ {
+ .procname = "unprivileged_userfaultfd",
+ .data = &sysctl_unprivileged_userfaultfd,
+ .maxlen = sizeof(sysctl_unprivileged_userfaultfd),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+#endif
+ { }
+};
-int proc_doulongvec_minmax(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
-{
- return -ENOSYS;
-}
+static struct ctl_table fs_table[] = {
+ {
+ .procname = "inode-nr",
+ .data = &inodes_stat,
+ .maxlen = 2*sizeof(long),
+ .mode = 0444,
+ .proc_handler = proc_nr_inodes,
+ },
+ {
+ .procname = "inode-state",
+ .data = &inodes_stat,
+ .maxlen = 7*sizeof(long),
+ .mode = 0444,
+ .proc_handler = proc_nr_inodes,
+ },
+ {
+ .procname = "file-nr",
+ .data = &files_stat,
+ .maxlen = sizeof(files_stat),
+ .mode = 0444,
+ .proc_handler = proc_nr_files,
+ },
+ {
+ .procname = "file-max",
+ .data = &files_stat.max_files,
+ .maxlen = sizeof(files_stat.max_files),
+ .mode = 0644,
+ .proc_handler = proc_doulongvec_minmax,
+ .extra1 = &zero_ul,
+ .extra2 = &long_max,
+ },
+ {
+ .procname = "nr_open",
+ .data = &sysctl_nr_open,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &sysctl_nr_open_min,
+ .extra2 = &sysctl_nr_open_max,
+ },
+ {
+ .procname = "dentry-state",
+ .data = &dentry_stat,
+ .maxlen = 6*sizeof(long),
+ .mode = 0444,
+ .proc_handler = proc_nr_dentry,
+ },
+ {
+ .procname = "overflowuid",
+ .data = &fs_overflowuid,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &minolduid,
+ .extra2 = &maxolduid,
+ },
+ {
+ .procname = "overflowgid",
+ .data = &fs_overflowgid,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &minolduid,
+ .extra2 = &maxolduid,
+ },
+#ifdef CONFIG_FILE_LOCKING
+ {
+ .procname = "leases-enable",
+ .data = &leases_enable,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+#endif
+#ifdef CONFIG_DNOTIFY
+ {
+ .procname = "dir-notify-enable",
+ .data = &dir_notify_enable,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+#endif
+#ifdef CONFIG_MMU
+#ifdef CONFIG_FILE_LOCKING
+ {
+ .procname = "lease-break-time",
+ .data = &lease_break_time,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+#endif
+#ifdef CONFIG_AIO
+ {
+ .procname = "aio-nr",
+ .data = &aio_nr,
+ .maxlen = sizeof(aio_nr),
+ .mode = 0444,
+ .proc_handler = proc_doulongvec_minmax,
+ },
+ {
+ .procname = "aio-max-nr",
+ .data = &aio_max_nr,
+ .maxlen = sizeof(aio_max_nr),
+ .mode = 0644,
+ .proc_handler = proc_doulongvec_minmax,
+ },
+#endif /* CONFIG_AIO */
+#ifdef CONFIG_INOTIFY_USER
+ {
+ .procname = "inotify",
+ .mode = 0555,
+ .child = inotify_table,
+ },
+#endif
+#ifdef CONFIG_EPOLL
+ {
+ .procname = "epoll",
+ .mode = 0555,
+ .child = epoll_table,
+ },
+#endif
+#endif
+ {
+ .procname = "protected_symlinks",
+ .data = &sysctl_protected_symlinks,
+ .maxlen = sizeof(int),
+ .mode = 0600,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+ {
+ .procname = "protected_hardlinks",
+ .data = &sysctl_protected_hardlinks,
+ .maxlen = sizeof(int),
+ .mode = 0600,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+ {
+ .procname = "protected_fifos",
+ .data = &sysctl_protected_fifos,
+ .maxlen = sizeof(int),
+ .mode = 0600,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = &two,
+ },
+ {
+ .procname = "protected_regular",
+ .data = &sysctl_protected_regular,
+ .maxlen = sizeof(int),
+ .mode = 0600,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = &two,
+ },
+ {
+ .procname = "suid_dumpable",
+ .data = &suid_dumpable,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax_coredump,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = &two,
+ },
+#if defined(CONFIG_BINFMT_MISC) || defined(CONFIG_BINFMT_MISC_MODULE)
+ {
+ .procname = "binfmt_misc",
+ .mode = 0555,
+ .child = sysctl_mount_point,
+ },
+#endif
+ {
+ .procname = "pipe-max-size",
+ .data = &pipe_max_size,
+ .maxlen = sizeof(pipe_max_size),
+ .mode = 0644,
+ .proc_handler = proc_dopipe_max_size,
+ },
+ {
+ .procname = "pipe-user-pages-hard",
+ .data = &pipe_user_pages_hard,
+ .maxlen = sizeof(pipe_user_pages_hard),
+ .mode = 0644,
+ .proc_handler = proc_doulongvec_minmax,
+ },
+ {
+ .procname = "pipe-user-pages-soft",
+ .data = &pipe_user_pages_soft,
+ .maxlen = sizeof(pipe_user_pages_soft),
+ .mode = 0644,
+ .proc_handler = proc_doulongvec_minmax,
+ },
+ {
+ .procname = "mount-max",
+ .data = &sysctl_mount_max,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ONE,
+ },
+ { }
+};
-int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write,
- void __user *buffer,
- size_t *lenp, loff_t *ppos)
-{
- return -ENOSYS;
-}
+static struct ctl_table debug_table[] = {
+#ifdef CONFIG_SYSCTL_EXCEPTION_TRACE
+ {
+ .procname = "exception-trace",
+ .data = &show_unhandled_signals,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec
+ },
+#endif
+#if defined(CONFIG_OPTPROBES)
+ {
+ .procname = "kprobes-optimization",
+ .data = &sysctl_kprobes_optimization,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_kprobes_optimization_handler,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+#endif
+ { }
+};
-int proc_do_large_bitmap(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
-{
- return -ENOSYS;
-}
+static struct ctl_table dev_table[] = {
+ { }
+};
-#endif /* CONFIG_PROC_SYSCTL */
+static struct ctl_table sysctl_base_table[] = {
+ {
+ .procname = "kernel",
+ .mode = 0555,
+ .child = kern_table,
+ },
+ {
+ .procname = "vm",
+ .mode = 0555,
+ .child = vm_table,
+ },
+ {
+ .procname = "fs",
+ .mode = 0555,
+ .child = fs_table,
+ },
+ {
+ .procname = "debug",
+ .mode = 0555,
+ .child = debug_table,
+ },
+ {
+ .procname = "dev",
+ .mode = 0555,
+ .child = dev_table,
+ },
+ { }
+};
-#if defined(CONFIG_SYSCTL)
-int proc_do_static_key(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp,
- loff_t *ppos)
+int __init sysctl_init(void)
{
- struct static_key *key = (struct static_key *)table->data;
- static DEFINE_MUTEX(static_key_mutex);
- int val, ret;
- struct ctl_table tmp = {
- .data = &val,
- .maxlen = sizeof(val),
- .mode = table->mode,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
- };
-
- if (write && !capable(CAP_SYS_ADMIN))
- return -EPERM;
+ struct ctl_table_header *hdr;
- mutex_lock(&static_key_mutex);
- val = static_key_enabled(key);
- ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos);
- if (write && !ret) {
- if (val)
- static_key_enable(key);
- else
- static_key_disable(key);
- }
- mutex_unlock(&static_key_mutex);
- return ret;
+ hdr = register_sysctl_table(sysctl_base_table);
+ kmemleak_not_leak(hdr);
+ return 0;
}
-#endif
+#endif /* CONFIG_SYSCTL */
/*
* No sense putting this after each symbol definition, twice,
* exception granted :-)
--
2.26.1
^ permalink raw reply related [flat|nested] 21+ messages in thread
* Re: [PATCH 5/5] sysctl: pass kernel pointers to ->proc_handler
[not found] ` <20200424064338.538313-6-hch@lst.de>
@ 2020-04-24 19:06 ` Andrey Ignatov
2020-04-27 5:34 ` Christoph Hellwig
2020-05-04 19:01 ` Kees Cook
1 sibling, 1 reply; 21+ messages in thread
From: Andrey Ignatov @ 2020-04-24 19:06 UTC (permalink / raw)
To: Christoph Hellwig
Cc: Kees Cook, Iurii Zaikin, Alexei Starovoitov, Daniel Borkmann,
linux-kernel, linux-mm, linux-fsdevel, netdev, bpf
Christoph Hellwig <hch@lst.de> [Thu, 2020-04-23 23:44 -0700]:
> Instead of having all the sysctl handlers deal with user pointers, which
> is rather hairy in terms of the BPF interaction, copy the input to and
> from userspace in common code. This also means that the strings are
> always NUL-terminated by the common code, making the API a little bit
> safer.
>
> As most handler just pass through the data to one of the common handlers
> a lot of the changes are mechnical.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> Acked-by: Andrey Ignatov <rdna@fb.com>
...
> @@ -72,33 +70,21 @@ extern unsigned int sysctl_sched_autogroup_enabled;
> extern int sysctl_sched_rr_timeslice;
> extern int sched_rr_timeslice;
>
> -extern int sched_rr_handler(struct ctl_table *table, int write,
> - void __user *buffer, size_t *lenp,
> - loff_t *ppos);
> -
> -extern int sched_rt_handler(struct ctl_table *table, int write,
> - void __user *buffer, size_t *lenp,
> - loff_t *ppos);
> -
> -#ifdef CONFIG_UCLAMP_TASK
Decided to skim through the patch one last time to double-check the fix
from previous iteration and found that this ifdef got lost below.
> -extern int sysctl_sched_uclamp_handler(struct ctl_table *table, int write,
> - void __user *buffer, size_t *lenp,
> - loff_t *ppos);
> -#endif
> -
> -extern int sysctl_numa_balancing(struct ctl_table *table, int write,
> - void __user *buffer, size_t *lenp,
> - loff_t *ppos);
> -
> -extern int sysctl_schedstats(struct ctl_table *table, int write,
> - void __user *buffer, size_t *lenp,
> - loff_t *ppos);
> +int sched_rr_handler(struct ctl_table *table, int write, void *buffer,
> + size_t *lenp, loff_t *ppos);
> +int sched_rt_handler(struct ctl_table *table, int write, void *buffer,
> + size_t *lenp, loff_t *ppos);
> +int sysctl_sched_uclamp_handler(struct ctl_table *table, int write,
> + void *buffer, size_t *lenp, loff_t *ppos);
Here ^^
--
Andrey Ignatov
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: pass kernel pointers to the sysctl ->proc_handler method v3
2020-04-24 6:43 pass kernel pointers to the sysctl ->proc_handler method v3 Christoph Hellwig
` (3 preceding siblings ...)
2020-04-24 6:43 ` [PATCH 4/5] sysctl: avoid forward declarations Christoph Hellwig
@ 2020-04-26 15:51 ` Alexei Starovoitov
2020-04-27 5:35 ` Christoph Hellwig
2020-04-26 15:59 ` Al Viro
[not found] ` <20200424064338.538313-6-hch@lst.de>
6 siblings, 1 reply; 21+ messages in thread
From: Alexei Starovoitov @ 2020-04-26 15:51 UTC (permalink / raw)
To: Christoph Hellwig
Cc: Kees Cook, Iurii Zaikin, Alexei Starovoitov, Daniel Borkmann,
linux-kernel, linux-mm, linux-fsdevel, netdev, bpf
On Fri, Apr 24, 2020 at 08:43:33AM +0200, Christoph Hellwig wrote:
> Hi all,
>
> this series changes the sysctl ->proc_handler methods to take kernel
> pointers. This simplifies some of the pointer handling in the methods
> (which could probably be further simplified now), and gets rid of the
> set_fs address space overrides used by bpf.
>
> Changes since v2:
> - free the buffer modified by BPF
> - move pid_max and friends to pid.h
>
> Changes since v1:
> - drop a patch merged by Greg
> - don't copy data out on a write
> - fix buffer allocation in bpf
The set looks good to me.
Should I take it via bpf-next tree ?
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: pass kernel pointers to the sysctl ->proc_handler method v3
2020-04-24 6:43 pass kernel pointers to the sysctl ->proc_handler method v3 Christoph Hellwig
` (4 preceding siblings ...)
2020-04-26 15:51 ` pass kernel pointers to the sysctl ->proc_handler method v3 Alexei Starovoitov
@ 2020-04-26 15:59 ` Al Viro
2020-04-27 5:36 ` Christoph Hellwig
[not found] ` <20200424064338.538313-6-hch@lst.de>
6 siblings, 1 reply; 21+ messages in thread
From: Al Viro @ 2020-04-26 15:59 UTC (permalink / raw)
To: Christoph Hellwig
Cc: Kees Cook, Iurii Zaikin, Alexei Starovoitov, Daniel Borkmann,
linux-kernel, linux-mm, linux-fsdevel, netdev, bpf
On Fri, Apr 24, 2020 at 08:43:33AM +0200, Christoph Hellwig wrote:
> Hi all,
>
> this series changes the sysctl ->proc_handler methods to take kernel
> pointers. This simplifies some of the pointer handling in the methods
> (which could probably be further simplified now), and gets rid of the
> set_fs address space overrides used by bpf.
>
> Changes since v2:
> - free the buffer modified by BPF
> - move pid_max and friends to pid.h
>
> Changes since v1:
> - drop a patch merged by Greg
> - don't copy data out on a write
> - fix buffer allocation in bpf
OK, I can live with that; further work can live on top of that, anyway.
How are we going to handle that? I can put it into never-rebased branch
in vfs.git (#work.sysctl), so that people could pull that.
FWIW, I'm putting together more uaccess stuff (will probably hit -next
tonight or tomorrow); this would fit well there...
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 5/5] sysctl: pass kernel pointers to ->proc_handler
2020-04-24 19:06 ` [PATCH 5/5] sysctl: pass kernel pointers to ->proc_handler Andrey Ignatov
@ 2020-04-27 5:34 ` Christoph Hellwig
0 siblings, 0 replies; 21+ messages in thread
From: Christoph Hellwig @ 2020-04-27 5:34 UTC (permalink / raw)
To: Andrey Ignatov
Cc: Christoph Hellwig, Kees Cook, Iurii Zaikin, Alexei Starovoitov,
Daniel Borkmann, linux-kernel, linux-mm, linux-fsdevel, netdev,
bpf
On Fri, Apr 24, 2020 at 12:06:50PM -0700, Andrey Ignatov wrote:
> > -
> > -#ifdef CONFIG_UCLAMP_TASK
>
> Decided to skim through the patch one last time to double-check the fix
> from previous iteration and found that this ifdef got lost below.
>
> > -extern int sysctl_sched_uclamp_handler(struct ctl_table *table, int write,
> > - void __user *buffer, size_t *lenp,
> > - loff_t *ppos);
> > -#endif
There is no need for ifdefs around prototypes that aren't used.
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: pass kernel pointers to the sysctl ->proc_handler method v3
2020-04-26 15:51 ` pass kernel pointers to the sysctl ->proc_handler method v3 Alexei Starovoitov
@ 2020-04-27 5:35 ` Christoph Hellwig
0 siblings, 0 replies; 21+ messages in thread
From: Christoph Hellwig @ 2020-04-27 5:35 UTC (permalink / raw)
To: Alexei Starovoitov
Cc: Christoph Hellwig, Kees Cook, Iurii Zaikin, Alexei Starovoitov,
Daniel Borkmann, linux-kernel, linux-mm, linux-fsdevel, netdev,
bpf
On Sun, Apr 26, 2020 at 08:51:00AM -0700, Alexei Starovoitov wrote:
> The set looks good to me.
> Should I take it via bpf-next tree ?
The first patch is a little unrelated and I think taking it via the
bpf tree sounds fine. Al volunteered the vfs tree for the actual
sysctl changes, which looks more suitable.
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: pass kernel pointers to the sysctl ->proc_handler method v3
2020-04-26 15:59 ` Al Viro
@ 2020-04-27 5:36 ` Christoph Hellwig
2020-04-27 7:15 ` Al Viro
0 siblings, 1 reply; 21+ messages in thread
From: Christoph Hellwig @ 2020-04-27 5:36 UTC (permalink / raw)
To: Al Viro
Cc: Christoph Hellwig, Kees Cook, Iurii Zaikin, Alexei Starovoitov,
Daniel Borkmann, linux-kernel, linux-mm, linux-fsdevel, netdev,
bpf
On Sun, Apr 26, 2020 at 04:59:58PM +0100, Al Viro wrote:
> OK, I can live with that; further work can live on top of that, anyway.
> How are we going to handle that? I can put it into never-rebased branch
> in vfs.git (#work.sysctl), so that people could pull that.
>
> FWIW, I'm putting together more uaccess stuff (will probably hit -next
> tonight or tomorrow); this would fit well there...
Sounds good to me. The first patch isn't really needed for the series
and could go in through the bpf tree.
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: pass kernel pointers to the sysctl ->proc_handler method v3
2020-04-27 5:36 ` Christoph Hellwig
@ 2020-04-27 7:15 ` Al Viro
0 siblings, 0 replies; 21+ messages in thread
From: Al Viro @ 2020-04-27 7:15 UTC (permalink / raw)
To: Christoph Hellwig
Cc: Kees Cook, Iurii Zaikin, Alexei Starovoitov, Daniel Borkmann,
linux-kernel, linux-mm, linux-fsdevel, netdev, bpf
On Mon, Apr 27, 2020 at 07:36:16AM +0200, Christoph Hellwig wrote:
> On Sun, Apr 26, 2020 at 04:59:58PM +0100, Al Viro wrote:
> > OK, I can live with that; further work can live on top of that, anyway.
> > How are we going to handle that? I can put it into never-rebased branch
> > in vfs.git (#work.sysctl), so that people could pull that.
> >
> > FWIW, I'm putting together more uaccess stuff (will probably hit -next
> > tonight or tomorrow); this would fit well there...
>
> Sounds good to me. The first patch isn't really needed for the series
> and could go in through the bpf tree.
OK, ##2--5 are in #work.sysctl, based at 5.7-rc1
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 1/5] bpf-cgroup: remove unused exports
2020-04-24 6:43 ` [PATCH 1/5] bpf-cgroup: remove unused exports Christoph Hellwig
@ 2020-04-27 21:23 ` Daniel Borkmann
0 siblings, 0 replies; 21+ messages in thread
From: Daniel Borkmann @ 2020-04-27 21:23 UTC (permalink / raw)
To: Christoph Hellwig, Kees Cook, Iurii Zaikin
Cc: Alexei Starovoitov, linux-kernel, linux-mm, linux-fsdevel,
netdev, bpf, Andrey Ignatov
On 4/24/20 8:43 AM, Christoph Hellwig wrote:
> Except for a few of the networking hooks called from modular ipv4 or
> ipv6 code, all of hooks are just called from guaranteed to be built-in
> code.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> Acked-by: Andrey Ignatov <rdna@fb.com>
Applied this one to bpf-next, thanks!
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 3/5] sysctl: remove all extern declaration from sysctl.c
2020-04-24 6:43 ` [PATCH 3/5] sysctl: remove all extern declaration from sysctl.c Christoph Hellwig
@ 2020-05-04 1:25 ` Stephen Rothwell
2020-05-04 18:42 ` Kees Cook
1 sibling, 0 replies; 21+ messages in thread
From: Stephen Rothwell @ 2020-05-04 1:25 UTC (permalink / raw)
To: Christoph Hellwig
Cc: Kees Cook, Iurii Zaikin, Alexei Starovoitov, Daniel Borkmann,
linux-kernel, linux-mm, linux-fsdevel, netdev, bpf
[-- Attachment #1: Type: text/plain, Size: 1187 bytes --]
Hi Christoph,
On Fri, 24 Apr 2020 08:43:36 +0200 Christoph Hellwig <hch@lst.de> wrote:
>
> Extern declarations in .c files are a bad style and can lead to
> mismatches. Use existing definitions in headers where they exist,
> and otherwise move the external declarations to suitable header
> files.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
> include/linux/coredump.h | 4 ++++
> include/linux/file.h | 2 ++
> include/linux/mm.h | 2 ++
> include/linux/mmzone.h | 2 ++
> include/linux/pid.h | 3 +++
> include/linux/sysctl.h | 8 +++++++
> kernel/sysctl.c | 45 +++-------------------------------------
> 7 files changed, 24 insertions(+), 42 deletions(-)
A couple of suggestions for another patch (since this one is in a
shared branch in Al's tree now):
There is an "extern struct ctl_table random_table[];" in
drivers/char/random.c which is redundant now (in fact always was).
There is already an "extern struct ctl_table epoll_table[];" in
include/linux/poll.h, so could have included that in kernel/sysctl.c
instead of adding the new one in include/linux/sysctl.h
--
Cheers,
Stephen Rothwell
[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 488 bytes --]
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 2/5] mm: remove watermark_boost_factor_sysctl_handler
2020-04-24 6:43 ` [PATCH 2/5] mm: remove watermark_boost_factor_sysctl_handler Christoph Hellwig
@ 2020-05-04 18:41 ` Kees Cook
0 siblings, 0 replies; 21+ messages in thread
From: Kees Cook @ 2020-05-04 18:41 UTC (permalink / raw)
To: Christoph Hellwig
Cc: Iurii Zaikin, Alexei Starovoitov, Daniel Borkmann, linux-kernel,
linux-mm, linux-fsdevel, netdev, bpf, David Rientjes
On Fri, Apr 24, 2020 at 08:43:35AM +0200, Christoph Hellwig wrote:
> watermark_boost_factor_sysctl_handler is just a pointless wrapper for
> proc_dointvec_minmax, so remove it and use proc_dointvec_minmax
> directly.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
-Kees
> Acked-by: David Rientjes <rientjes@google.com>
> ---
> include/linux/mmzone.h | 2 --
> kernel/sysctl.c | 2 +-
> mm/page_alloc.c | 12 ------------
> 3 files changed, 1 insertion(+), 15 deletions(-)
>
> diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
> index 1b9de7d220fb7..f37bb8f187fc7 100644
> --- a/include/linux/mmzone.h
> +++ b/include/linux/mmzone.h
> @@ -911,8 +911,6 @@ static inline int is_highmem(struct zone *zone)
> struct ctl_table;
> int min_free_kbytes_sysctl_handler(struct ctl_table *, int,
> void __user *, size_t *, loff_t *);
> -int watermark_boost_factor_sysctl_handler(struct ctl_table *, int,
> - void __user *, size_t *, loff_t *);
> int watermark_scale_factor_sysctl_handler(struct ctl_table *, int,
> void __user *, size_t *, loff_t *);
> extern int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES];
> diff --git a/kernel/sysctl.c b/kernel/sysctl.c
> index 8a176d8727a3a..99d27acf46465 100644
> --- a/kernel/sysctl.c
> +++ b/kernel/sysctl.c
> @@ -1491,7 +1491,7 @@ static struct ctl_table vm_table[] = {
> .data = &watermark_boost_factor,
> .maxlen = sizeof(watermark_boost_factor),
> .mode = 0644,
> - .proc_handler = watermark_boost_factor_sysctl_handler,
> + .proc_handler = proc_dointvec_minmax,
> .extra1 = SYSCTL_ZERO,
> },
> {
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 69827d4fa0527..62c1550cd43ec 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -7978,18 +7978,6 @@ int min_free_kbytes_sysctl_handler(struct ctl_table *table, int write,
> return 0;
> }
>
> -int watermark_boost_factor_sysctl_handler(struct ctl_table *table, int write,
> - void __user *buffer, size_t *length, loff_t *ppos)
> -{
> - int rc;
> -
> - rc = proc_dointvec_minmax(table, write, buffer, length, ppos);
> - if (rc)
> - return rc;
> -
> - return 0;
> -}
> -
> int watermark_scale_factor_sysctl_handler(struct ctl_table *table, int write,
> void __user *buffer, size_t *length, loff_t *ppos)
> {
> --
> 2.26.1
>
--
Kees Cook
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 3/5] sysctl: remove all extern declaration from sysctl.c
2020-04-24 6:43 ` [PATCH 3/5] sysctl: remove all extern declaration from sysctl.c Christoph Hellwig
2020-05-04 1:25 ` Stephen Rothwell
@ 2020-05-04 18:42 ` Kees Cook
1 sibling, 0 replies; 21+ messages in thread
From: Kees Cook @ 2020-05-04 18:42 UTC (permalink / raw)
To: Christoph Hellwig
Cc: Iurii Zaikin, Alexei Starovoitov, Daniel Borkmann, linux-kernel,
linux-mm, linux-fsdevel, netdev, bpf
On Fri, Apr 24, 2020 at 08:43:36AM +0200, Christoph Hellwig wrote:
> Extern declarations in .c files are a bad style and can lead to
> mismatches. Use existing definitions in headers where they exist,
> and otherwise move the external declarations to suitable header
> files.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
-Kees
> ---
> include/linux/coredump.h | 4 ++++
> include/linux/file.h | 2 ++
> include/linux/mm.h | 2 ++
> include/linux/mmzone.h | 2 ++
> include/linux/pid.h | 3 +++
> include/linux/sysctl.h | 8 +++++++
> kernel/sysctl.c | 45 +++-------------------------------------
> 7 files changed, 24 insertions(+), 42 deletions(-)
>
> diff --git a/include/linux/coredump.h b/include/linux/coredump.h
> index abf4b4e65dbb9..7a899e83835d5 100644
> --- a/include/linux/coredump.h
> +++ b/include/linux/coredump.h
> @@ -22,4 +22,8 @@ extern void do_coredump(const kernel_siginfo_t *siginfo);
> static inline void do_coredump(const kernel_siginfo_t *siginfo) {}
> #endif
>
> +extern int core_uses_pid;
> +extern char core_pattern[];
> +extern unsigned int core_pipe_limit;
> +
> #endif /* _LINUX_COREDUMP_H */
> diff --git a/include/linux/file.h b/include/linux/file.h
> index 142d102f285e5..122f80084a3ef 100644
> --- a/include/linux/file.h
> +++ b/include/linux/file.h
> @@ -94,4 +94,6 @@ extern void fd_install(unsigned int fd, struct file *file);
> extern void flush_delayed_fput(void);
> extern void __fput_sync(struct file *);
>
> +extern unsigned int sysctl_nr_open_min, sysctl_nr_open_max;
> +
> #endif /* __LINUX_FILE_H */
> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index 5a323422d783d..9c4e7e76deddc 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -3140,5 +3140,7 @@ unsigned long wp_shared_mapping_range(struct address_space *mapping,
> pgoff_t first_index, pgoff_t nr);
> #endif
>
> +extern int sysctl_nr_trim_pages;
> +
> #endif /* __KERNEL__ */
> #endif /* _LINUX_MM_H */
> diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
> index f37bb8f187fc7..b2af594ef0f7c 100644
> --- a/include/linux/mmzone.h
> +++ b/include/linux/mmzone.h
> @@ -909,6 +909,7 @@ static inline int is_highmem(struct zone *zone)
>
> /* These two functions are used to setup the per zone pages min values */
> struct ctl_table;
> +
> int min_free_kbytes_sysctl_handler(struct ctl_table *, int,
> void __user *, size_t *, loff_t *);
> int watermark_scale_factor_sysctl_handler(struct ctl_table *, int,
> @@ -925,6 +926,7 @@ int sysctl_min_slab_ratio_sysctl_handler(struct ctl_table *, int,
>
> extern int numa_zonelist_order_handler(struct ctl_table *, int,
> void __user *, size_t *, loff_t *);
> +extern int percpu_pagelist_fraction;
> extern char numa_zonelist_order[];
> #define NUMA_ZONELIST_ORDER_LEN 16
>
> diff --git a/include/linux/pid.h b/include/linux/pid.h
> index cc896f0fc4e34..93543cbc0e6b3 100644
> --- a/include/linux/pid.h
> +++ b/include/linux/pid.h
> @@ -108,6 +108,9 @@ extern void transfer_pid(struct task_struct *old, struct task_struct *new,
> struct pid_namespace;
> extern struct pid_namespace init_pid_ns;
>
> +extern int pid_max;
> +extern int pid_max_min, pid_max_max;
> +
> /*
> * look up a PID in the hash table. Must be called with the tasklist_lock
> * or rcu_read_lock() held.
> diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
> index 02fa84493f237..36143ca40b56b 100644
> --- a/include/linux/sysctl.h
> +++ b/include/linux/sysctl.h
> @@ -207,7 +207,15 @@ void unregister_sysctl_table(struct ctl_table_header * table);
>
> extern int sysctl_init(void);
>
> +extern int pwrsw_enabled;
> +extern int unaligned_enabled;
> +extern int unaligned_dump_stack;
> +extern int no_unaligned_warning;
> +
> extern struct ctl_table sysctl_mount_point[];
> +extern struct ctl_table random_table[];
> +extern struct ctl_table firmware_config_table[];
> +extern struct ctl_table epoll_table[];
>
> #else /* CONFIG_SYSCTL */
> static inline struct ctl_table_header *register_sysctl_table(struct ctl_table * table)
> diff --git a/kernel/sysctl.c b/kernel/sysctl.c
> index 99d27acf46465..31b934865ebc3 100644
> --- a/kernel/sysctl.c
> +++ b/kernel/sysctl.c
> @@ -68,6 +68,9 @@
> #include <linux/bpf.h>
> #include <linux/mount.h>
> #include <linux/userfaultfd_k.h>
> +#include <linux/coredump.h>
> +#include <linux/latencytop.h>
> +#include <linux/pid.h>
>
> #include "../lib/kstrtox.h"
>
> @@ -103,22 +106,6 @@
>
> #if defined(CONFIG_SYSCTL)
>
> -/* External variables not in a header file. */
> -extern int suid_dumpable;
> -#ifdef CONFIG_COREDUMP
> -extern int core_uses_pid;
> -extern char core_pattern[];
> -extern unsigned int core_pipe_limit;
> -#endif
> -extern int pid_max;
> -extern int pid_max_min, pid_max_max;
> -extern int percpu_pagelist_fraction;
> -extern int latencytop_enabled;
> -extern unsigned int sysctl_nr_open_min, sysctl_nr_open_max;
> -#ifndef CONFIG_MMU
> -extern int sysctl_nr_trim_pages;
> -#endif
> -
> /* Constants used for minimum and maximum */
> #ifdef CONFIG_LOCKUP_DETECTOR
> static int sixty = 60;
> @@ -160,24 +147,6 @@ static unsigned long hung_task_timeout_max = (LONG_MAX/HZ);
> #ifdef CONFIG_INOTIFY_USER
> #include <linux/inotify.h>
> #endif
> -#ifdef CONFIG_SPARC
> -#endif
> -
> -#ifdef CONFIG_PARISC
> -extern int pwrsw_enabled;
> -#endif
> -
> -#ifdef CONFIG_SYSCTL_ARCH_UNALIGN_ALLOW
> -extern int unaligned_enabled;
> -#endif
> -
> -#ifdef CONFIG_IA64
> -extern int unaligned_dump_stack;
> -#endif
> -
> -#ifdef CONFIG_SYSCTL_ARCH_UNALIGN_NO_WARN
> -extern int no_unaligned_warning;
> -#endif
>
> #ifdef CONFIG_PROC_SYSCTL
>
> @@ -243,14 +212,6 @@ static struct ctl_table vm_table[];
> static struct ctl_table fs_table[];
> static struct ctl_table debug_table[];
> static struct ctl_table dev_table[];
> -extern struct ctl_table random_table[];
> -#ifdef CONFIG_EPOLL
> -extern struct ctl_table epoll_table[];
> -#endif
> -
> -#ifdef CONFIG_FW_LOADER_USER_HELPER
> -extern struct ctl_table firmware_config_table[];
> -#endif
>
> #if defined(HAVE_ARCH_PICK_MMAP_LAYOUT) || \
> defined(CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT)
> --
> 2.26.1
>
--
Kees Cook
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 4/5] sysctl: avoid forward declarations
2020-04-24 6:43 ` [PATCH 4/5] sysctl: avoid forward declarations Christoph Hellwig
@ 2020-05-04 18:44 ` Kees Cook
0 siblings, 0 replies; 21+ messages in thread
From: Kees Cook @ 2020-05-04 18:44 UTC (permalink / raw)
To: Christoph Hellwig
Cc: Iurii Zaikin, Alexei Starovoitov, Daniel Borkmann, linux-kernel,
linux-mm, linux-fsdevel, netdev, bpf
On Fri, Apr 24, 2020 at 08:43:37AM +0200, Christoph Hellwig wrote:
> Move the sysctl tables to the end of the file to avoid lots of pointless
> forward declarations.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
-Kees
> ---
> kernel/sysctl.c | 3565 +++++++++++++++++++++++------------------------
> 1 file changed, 1764 insertions(+), 1801 deletions(-)
>
> diff --git a/kernel/sysctl.c b/kernel/sysctl.c
> index 31b934865ebc3..511543d238794 100644
> --- a/kernel/sysctl.c
> +++ b/kernel/sysctl.c
> @@ -176,79 +176,13 @@ enum sysctl_writes_mode {
> };
>
> static enum sysctl_writes_mode sysctl_writes_strict = SYSCTL_WRITES_STRICT;
> -
> -static int proc_do_cad_pid(struct ctl_table *table, int write,
> - void __user *buffer, size_t *lenp, loff_t *ppos);
> -static int proc_taint(struct ctl_table *table, int write,
> - void __user *buffer, size_t *lenp, loff_t *ppos);
> -#ifdef CONFIG_COMPACTION
> -static int proc_dointvec_minmax_warn_RT_change(struct ctl_table *table,
> - int write, void __user *buffer,
> - size_t *lenp, loff_t *ppos);
> -#endif
> -#endif
> -
> -#ifdef CONFIG_PRINTK
> -static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write,
> - void __user *buffer, size_t *lenp, loff_t *ppos);
> -#endif
> -
> -static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write,
> - void __user *buffer, size_t *lenp, loff_t *ppos);
> -#ifdef CONFIG_COREDUMP
> -static int proc_dostring_coredump(struct ctl_table *table, int write,
> - void __user *buffer, size_t *lenp, loff_t *ppos);
> -#endif
> -static int proc_dopipe_max_size(struct ctl_table *table, int write,
> - void __user *buffer, size_t *lenp, loff_t *ppos);
> -
> -#ifdef CONFIG_MAGIC_SYSRQ
> -static int sysrq_sysctl_handler(struct ctl_table *table, int write,
> - void __user *buffer, size_t *lenp, loff_t *ppos);
> -#endif
> -
> -static struct ctl_table kern_table[];
> -static struct ctl_table vm_table[];
> -static struct ctl_table fs_table[];
> -static struct ctl_table debug_table[];
> -static struct ctl_table dev_table[];
> +#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
>
> -/* The default sysctl tables: */
> -
> -static struct ctl_table sysctl_base_table[] = {
> - {
> - .procname = "kernel",
> - .mode = 0555,
> - .child = kern_table,
> - },
> - {
> - .procname = "vm",
> - .mode = 0555,
> - .child = vm_table,
> - },
> - {
> - .procname = "fs",
> - .mode = 0555,
> - .child = fs_table,
> - },
> - {
> - .procname = "debug",
> - .mode = 0555,
> - .child = debug_table,
> - },
> - {
> - .procname = "dev",
> - .mode = 0555,
> - .child = dev_table,
> - },
> - { }
> -};
> -
> #ifdef CONFIG_SCHED_DEBUG
> static int min_sched_granularity_ns = 100000; /* 100 usecs */
> static int max_sched_granularity_ns = NSEC_PER_SEC; /* 1 second */
> @@ -265,1676 +199,12 @@ static int min_extfrag_threshold;
> static int max_extfrag_threshold = 1000;
> #endif
>
> -static struct ctl_table kern_table[] = {
> - {
> - .procname = "sched_child_runs_first",
> - .data = &sysctl_sched_child_runs_first,
> - .maxlen = sizeof(unsigned int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> -#ifdef CONFIG_SCHED_DEBUG
> - {
> - .procname = "sched_min_granularity_ns",
> - .data = &sysctl_sched_min_granularity,
> - .maxlen = sizeof(unsigned int),
> - .mode = 0644,
> - .proc_handler = sched_proc_update_handler,
> - .extra1 = &min_sched_granularity_ns,
> - .extra2 = &max_sched_granularity_ns,
> - },
> - {
> - .procname = "sched_latency_ns",
> - .data = &sysctl_sched_latency,
> - .maxlen = sizeof(unsigned int),
> - .mode = 0644,
> - .proc_handler = sched_proc_update_handler,
> - .extra1 = &min_sched_granularity_ns,
> - .extra2 = &max_sched_granularity_ns,
> - },
> - {
> - .procname = "sched_wakeup_granularity_ns",
> - .data = &sysctl_sched_wakeup_granularity,
> - .maxlen = sizeof(unsigned int),
> - .mode = 0644,
> - .proc_handler = sched_proc_update_handler,
> - .extra1 = &min_wakeup_granularity_ns,
> - .extra2 = &max_wakeup_granularity_ns,
> - },
> -#ifdef CONFIG_SMP
> - {
> - .procname = "sched_tunable_scaling",
> - .data = &sysctl_sched_tunable_scaling,
> - .maxlen = sizeof(enum sched_tunable_scaling),
> - .mode = 0644,
> - .proc_handler = sched_proc_update_handler,
> - .extra1 = &min_sched_tunable_scaling,
> - .extra2 = &max_sched_tunable_scaling,
> - },
> - {
> - .procname = "sched_migration_cost_ns",
> - .data = &sysctl_sched_migration_cost,
> - .maxlen = sizeof(unsigned int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> - {
> - .procname = "sched_nr_migrate",
> - .data = &sysctl_sched_nr_migrate,
> - .maxlen = sizeof(unsigned int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> -#ifdef CONFIG_SCHEDSTATS
> - {
> - .procname = "sched_schedstats",
> - .data = NULL,
> - .maxlen = sizeof(unsigned int),
> - .mode = 0644,
> - .proc_handler = sysctl_schedstats,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = SYSCTL_ONE,
> - },
> -#endif /* CONFIG_SCHEDSTATS */
> -#endif /* CONFIG_SMP */
> -#ifdef CONFIG_NUMA_BALANCING
> - {
> - .procname = "numa_balancing_scan_delay_ms",
> - .data = &sysctl_numa_balancing_scan_delay,
> - .maxlen = sizeof(unsigned int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> - {
> - .procname = "numa_balancing_scan_period_min_ms",
> - .data = &sysctl_numa_balancing_scan_period_min,
> - .maxlen = sizeof(unsigned int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> - {
> - .procname = "numa_balancing_scan_period_max_ms",
> - .data = &sysctl_numa_balancing_scan_period_max,
> - .maxlen = sizeof(unsigned int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> - {
> - .procname = "numa_balancing_scan_size_mb",
> - .data = &sysctl_numa_balancing_scan_size,
> - .maxlen = sizeof(unsigned int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ONE,
> - },
> - {
> - .procname = "numa_balancing",
> - .data = NULL, /* filled in by handler */
> - .maxlen = sizeof(unsigned int),
> - .mode = 0644,
> - .proc_handler = sysctl_numa_balancing,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = SYSCTL_ONE,
> - },
> -#endif /* CONFIG_NUMA_BALANCING */
> -#endif /* CONFIG_SCHED_DEBUG */
> - {
> - .procname = "sched_rt_period_us",
> - .data = &sysctl_sched_rt_period,
> - .maxlen = sizeof(unsigned int),
> - .mode = 0644,
> - .proc_handler = sched_rt_handler,
> - },
> - {
> - .procname = "sched_rt_runtime_us",
> - .data = &sysctl_sched_rt_runtime,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = sched_rt_handler,
> - },
> - {
> - .procname = "sched_rr_timeslice_ms",
> - .data = &sysctl_sched_rr_timeslice,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = sched_rr_handler,
> - },
> -#ifdef CONFIG_UCLAMP_TASK
> - {
> - .procname = "sched_util_clamp_min",
> - .data = &sysctl_sched_uclamp_util_min,
> - .maxlen = sizeof(unsigned int),
> - .mode = 0644,
> - .proc_handler = sysctl_sched_uclamp_handler,
> - },
> - {
> - .procname = "sched_util_clamp_max",
> - .data = &sysctl_sched_uclamp_util_max,
> - .maxlen = sizeof(unsigned int),
> - .mode = 0644,
> - .proc_handler = sysctl_sched_uclamp_handler,
> - },
> -#endif
> -#ifdef CONFIG_SCHED_AUTOGROUP
> - {
> - .procname = "sched_autogroup_enabled",
> - .data = &sysctl_sched_autogroup_enabled,
> - .maxlen = sizeof(unsigned int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = SYSCTL_ONE,
> - },
> -#endif
> -#ifdef CONFIG_CFS_BANDWIDTH
> - {
> - .procname = "sched_cfs_bandwidth_slice_us",
> - .data = &sysctl_sched_cfs_bandwidth_slice,
> - .maxlen = sizeof(unsigned int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ONE,
> - },
> -#endif
> -#if defined(CONFIG_ENERGY_MODEL) && defined(CONFIG_CPU_FREQ_GOV_SCHEDUTIL)
> - {
> - .procname = "sched_energy_aware",
> - .data = &sysctl_sched_energy_aware,
> - .maxlen = sizeof(unsigned int),
> - .mode = 0644,
> - .proc_handler = sched_energy_aware_handler,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = SYSCTL_ONE,
> - },
> -#endif
> -#ifdef CONFIG_PROVE_LOCKING
> - {
> - .procname = "prove_locking",
> - .data = &prove_locking,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> -#endif
> -#ifdef CONFIG_LOCK_STAT
> - {
> - .procname = "lock_stat",
> - .data = &lock_stat,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> -#endif
> - {
> - .procname = "panic",
> - .data = &panic_timeout,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> -#ifdef CONFIG_COREDUMP
> - {
> - .procname = "core_uses_pid",
> - .data = &core_uses_pid,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> - {
> - .procname = "core_pattern",
> - .data = core_pattern,
> - .maxlen = CORENAME_MAX_SIZE,
> - .mode = 0644,
> - .proc_handler = proc_dostring_coredump,
> - },
> - {
> - .procname = "core_pipe_limit",
> - .data = &core_pipe_limit,
> - .maxlen = sizeof(unsigned int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> -#endif
> -#ifdef CONFIG_PROC_SYSCTL
> - {
> - .procname = "tainted",
> - .maxlen = sizeof(long),
> - .mode = 0644,
> - .proc_handler = proc_taint,
> - },
> - {
> - .procname = "sysctl_writes_strict",
> - .data = &sysctl_writes_strict,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = &neg_one,
> - .extra2 = SYSCTL_ONE,
> - },
> -#endif
> -#ifdef CONFIG_LATENCYTOP
> - {
> - .procname = "latencytop",
> - .data = &latencytop_enabled,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = sysctl_latencytop,
> - },
> -#endif
> -#ifdef CONFIG_BLK_DEV_INITRD
> - {
> - .procname = "real-root-dev",
> - .data = &real_root_dev,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> -#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",
> - .data = &pwrsw_enabled,
> - .maxlen = sizeof (int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> -#endif
> -#ifdef CONFIG_SYSCTL_ARCH_UNALIGN_ALLOW
> - {
> - .procname = "unaligned-trap",
> - .data = &unaligned_enabled,
> - .maxlen = sizeof (int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> -#endif
> - {
> - .procname = "ctrl-alt-del",
> - .data = &C_A_D,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> -#ifdef CONFIG_FUNCTION_TRACER
> - {
> - .procname = "ftrace_enabled",
> - .data = &ftrace_enabled,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = ftrace_enable_sysctl,
> - },
> -#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 = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> - {
> - .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_KEXEC_CORE
> - {
> - .procname = "kexec_load_disabled",
> - .data = &kexec_load_disabled,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - /* only handle a transition from default "0" to "1" */
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ONE,
> - .extra2 = SYSCTL_ONE,
> - },
> -#endif
> -#ifdef CONFIG_MODULES
> - {
> - .procname = "modprobe",
> - .data = &modprobe_path,
> - .maxlen = KMOD_PATH_LEN,
> - .mode = 0644,
> - .proc_handler = proc_dostring,
> - },
> - {
> - .procname = "modules_disabled",
> - .data = &modules_disabled,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - /* only handle a transition from default "0" to "1" */
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ONE,
> - .extra2 = SYSCTL_ONE,
> - },
> -#endif
> -#ifdef CONFIG_UEVENT_HELPER
> - {
> - .procname = "hotplug",
> - .data = &uevent_helper,
> - .maxlen = UEVENT_HELPER_PATH_LEN,
> - .mode = 0644,
> - .proc_handler = proc_dostring,
> - },
> -#endif
> -#ifdef CONFIG_CHR_DEV_SG
> - {
> - .procname = "sg-big-buff",
> - .data = &sg_big_buff,
> - .maxlen = sizeof (int),
> - .mode = 0444,
> - .proc_handler = proc_dointvec,
> - },
> -#endif
> -#ifdef CONFIG_BSD_PROCESS_ACCT
> - {
> - .procname = "acct",
> - .data = &acct_parm,
> - .maxlen = 3*sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> -#endif
> -#ifdef CONFIG_MAGIC_SYSRQ
> - {
> - .procname = "sysrq",
> - .data = NULL,
> - .maxlen = sizeof (int),
> - .mode = 0644,
> - .proc_handler = sysrq_sysctl_handler,
> - },
> -#endif
> -#ifdef CONFIG_PROC_SYSCTL
> - {
> - .procname = "cad_pid",
> - .data = NULL,
> - .maxlen = sizeof (int),
> - .mode = 0600,
> - .proc_handler = proc_do_cad_pid,
> - },
> -#endif
> - {
> - .procname = "threads-max",
> - .data = NULL,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = sysctl_max_threads,
> - },
> - {
> - .procname = "random",
> - .mode = 0555,
> - .child = random_table,
> - },
> - {
> - .procname = "usermodehelper",
> - .mode = 0555,
> - .child = usermodehelper_table,
> - },
> -#ifdef CONFIG_FW_LOADER_USER_HELPER
> - {
> - .procname = "firmware_config",
> - .mode = 0555,
> - .child = firmware_config_table,
> - },
> -#endif
> - {
> - .procname = "overflowuid",
> - .data = &overflowuid,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = &minolduid,
> - .extra2 = &maxolduid,
> - },
> - {
> - .procname = "overflowgid",
> - .data = &overflowgid,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = &minolduid,
> - .extra2 = &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,
> - },
> -#if defined CONFIG_PRINTK
> - {
> - .procname = "printk",
> - .data = &console_loglevel,
> - .maxlen = 4*sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> - {
> - .procname = "printk_ratelimit",
> - .data = &printk_ratelimit_state.interval,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_jiffies,
> - },
> - {
> - .procname = "printk_ratelimit_burst",
> - .data = &printk_ratelimit_state.burst,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> - {
> - .procname = "printk_delay",
> - .data = &printk_delay_msec,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = &ten_thousand,
> - },
> - {
> - .procname = "printk_devkmsg",
> - .data = devkmsg_log_str,
> - .maxlen = DEVKMSG_STR_MAX_SIZE,
> - .mode = 0644,
> - .proc_handler = devkmsg_sysctl_set_loglvl,
> - },
> - {
> - .procname = "dmesg_restrict",
> - .data = &dmesg_restrict,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax_sysadmin,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = SYSCTL_ONE,
> - },
> - {
> - .procname = "kptr_restrict",
> - .data = &kptr_restrict,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax_sysadmin,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = &two,
> - },
> -#endif
> - {
> - .procname = "ngroups_max",
> - .data = &ngroups_max,
> - .maxlen = sizeof (int),
> - .mode = 0444,
> - .proc_handler = proc_dointvec,
> - },
> - {
> - .procname = "cap_last_cap",
> - .data = (void *)&cap_last_cap,
> - .maxlen = sizeof(int),
> - .mode = 0444,
> - .proc_handler = proc_dointvec,
> - },
> -#if defined(CONFIG_LOCKUP_DETECTOR)
> - {
> - .procname = "watchdog",
> - .data = &watchdog_user_enabled,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_watchdog,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = SYSCTL_ONE,
> - },
> - {
> - .procname = "watchdog_thresh",
> - .data = &watchdog_thresh,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_watchdog_thresh,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = &sixty,
> - },
> - {
> - .procname = "nmi_watchdog",
> - .data = &nmi_watchdog_user_enabled,
> - .maxlen = sizeof(int),
> - .mode = NMI_WATCHDOG_SYSCTL_PERM,
> - .proc_handler = proc_nmi_watchdog,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = SYSCTL_ONE,
> - },
> - {
> - .procname = "watchdog_cpumask",
> - .data = &watchdog_cpumask_bits,
> - .maxlen = NR_CPUS,
> - .mode = 0644,
> - .proc_handler = proc_watchdog_cpumask,
> - },
> -#ifdef CONFIG_SOFTLOCKUP_DETECTOR
> - {
> - .procname = "soft_watchdog",
> - .data = &soft_watchdog_user_enabled,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_soft_watchdog,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = SYSCTL_ONE,
> - },
> - {
> - .procname = "softlockup_panic",
> - .data = &softlockup_panic,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = SYSCTL_ONE,
> - },
> -#ifdef CONFIG_SMP
> - {
> - .procname = "softlockup_all_cpu_backtrace",
> - .data = &sysctl_softlockup_all_cpu_backtrace,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = SYSCTL_ONE,
> - },
> -#endif /* CONFIG_SMP */
> -#endif
> -#ifdef CONFIG_HARDLOCKUP_DETECTOR
> - {
> - .procname = "hardlockup_panic",
> - .data = &hardlockup_panic,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = SYSCTL_ONE,
> - },
> -#ifdef CONFIG_SMP
> - {
> - .procname = "hardlockup_all_cpu_backtrace",
> - .data = &sysctl_hardlockup_all_cpu_backtrace,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = SYSCTL_ONE,
> - },
> -#endif /* CONFIG_SMP */
> -#endif
> -#endif
> -
> -#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)
> - {
> - .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,
> - },
> -#ifdef CONFIG_DEBUG_STACKOVERFLOW
> - {
> - .procname = "panic_on_stackoverflow",
> - .data = &sysctl_panic_on_stackoverflow,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> -#endif
> - {
> - .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",
> - .data = &randomize_va_space,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .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",
> - .data = &no_unaligned_warning,
> - .maxlen = sizeof (int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> -#endif
> -#ifdef CONFIG_IA64
> - {
> - .procname = "unaligned-dump-stack",
> - .data = &unaligned_dump_stack,
> - .maxlen = sizeof (int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> -#endif
> -#ifdef CONFIG_DETECT_HUNG_TASK
> - {
> - .procname = "hung_task_panic",
> - .data = &sysctl_hung_task_panic,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = SYSCTL_ONE,
> - },
> - {
> - .procname = "hung_task_check_count",
> - .data = &sysctl_hung_task_check_count,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ZERO,
> - },
> - {
> - .procname = "hung_task_timeout_secs",
> - .data = &sysctl_hung_task_timeout_secs,
> - .maxlen = sizeof(unsigned long),
> - .mode = 0644,
> - .proc_handler = proc_dohung_task_timeout_secs,
> - .extra2 = &hung_task_timeout_max,
> - },
> - {
> - .procname = "hung_task_check_interval_secs",
> - .data = &sysctl_hung_task_check_interval_secs,
> - .maxlen = sizeof(unsigned long),
> - .mode = 0644,
> - .proc_handler = proc_dohung_task_timeout_secs,
> - .extra2 = &hung_task_timeout_max,
> - },
> - {
> - .procname = "hung_task_warnings",
> - .data = &sysctl_hung_task_warnings,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = &neg_one,
> - },
> -#endif
> -#ifdef CONFIG_RT_MUTEXES
> - {
> - .procname = "max_lock_depth",
> - .data = &max_lock_depth,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> -#endif
> - {
> - .procname = "poweroff_cmd",
> - .data = &poweroff_cmd,
> - .maxlen = POWEROFF_CMD_PATH_LEN,
> - .mode = 0644,
> - .proc_handler = proc_dostring,
> - },
> -#ifdef CONFIG_KEYS
> - {
> - .procname = "keys",
> - .mode = 0555,
> - .child = key_sysctls,
> - },
> -#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_proc_update_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 = &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 = &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 = &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,
> - },
> -#if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ_COMMON)
> - {
> - .procname = "timer_migration",
> - .data = &sysctl_timer_migration,
> - .maxlen = sizeof(unsigned int),
> - .mode = 0644,
> - .proc_handler = timer_migration_handler,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = SYSCTL_ONE,
> - },
> -#endif
> -#ifdef CONFIG_BPF_SYSCALL
> - {
> - .procname = "unprivileged_bpf_disabled",
> - .data = &sysctl_unprivileged_bpf_disabled,
> - .maxlen = sizeof(sysctl_unprivileged_bpf_disabled),
> - .mode = 0644,
> - /* only handle a transition from default "0" to "1" */
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ONE,
> - .extra2 = SYSCTL_ONE,
> - },
> - {
> - .procname = "bpf_stats_enabled",
> - .data = &bpf_stats_enabled_key.key,
> - .maxlen = sizeof(bpf_stats_enabled_key),
> - .mode = 0644,
> - .proc_handler = proc_do_static_key,
> - },
> -#endif
> -#if defined(CONFIG_TREE_RCU)
> - {
> - .procname = "panic_on_rcu_stall",
> - .data = &sysctl_panic_on_rcu_stall,
> - .maxlen = sizeof(sysctl_panic_on_rcu_stall),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = SYSCTL_ONE,
> - },
> -#endif
> -#ifdef CONFIG_STACKLEAK_RUNTIME_DISABLE
> - {
> - .procname = "stack_erasing",
> - .data = NULL,
> - .maxlen = sizeof(int),
> - .mode = 0600,
> - .proc_handler = stack_erasing_sysctl,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = SYSCTL_ONE,
> - },
> -#endif
> - { }
> -};
> -
> -static struct ctl_table vm_table[] = {
> - {
> - .procname = "overcommit_memory",
> - .data = &sysctl_overcommit_memory,
> - .maxlen = sizeof(sysctl_overcommit_memory),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = &two,
> - },
> - {
> - .procname = "panic_on_oom",
> - .data = &sysctl_panic_on_oom,
> - .maxlen = sizeof(sysctl_panic_on_oom),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = &two,
> - },
> - {
> - .procname = "oom_kill_allocating_task",
> - .data = &sysctl_oom_kill_allocating_task,
> - .maxlen = sizeof(sysctl_oom_kill_allocating_task),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> - {
> - .procname = "oom_dump_tasks",
> - .data = &sysctl_oom_dump_tasks,
> - .maxlen = sizeof(sysctl_oom_dump_tasks),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> - {
> - .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,
> - },
> - {
> - .procname = "dirty_background_ratio",
> - .data = &dirty_background_ratio,
> - .maxlen = sizeof(dirty_background_ratio),
> - .mode = 0644,
> - .proc_handler = dirty_background_ratio_handler,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = &one_hundred,
> - },
> - {
> - .procname = "dirty_background_bytes",
> - .data = &dirty_background_bytes,
> - .maxlen = sizeof(dirty_background_bytes),
> - .mode = 0644,
> - .proc_handler = dirty_background_bytes_handler,
> - .extra1 = &one_ul,
> - },
> - {
> - .procname = "dirty_ratio",
> - .data = &vm_dirty_ratio,
> - .maxlen = sizeof(vm_dirty_ratio),
> - .mode = 0644,
> - .proc_handler = dirty_ratio_handler,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = &one_hundred,
> - },
> - {
> - .procname = "dirty_bytes",
> - .data = &vm_dirty_bytes,
> - .maxlen = sizeof(vm_dirty_bytes),
> - .mode = 0644,
> - .proc_handler = dirty_bytes_handler,
> - .extra1 = &dirty_bytes_min,
> - },
> - {
> - .procname = "dirty_writeback_centisecs",
> - .data = &dirty_writeback_interval,
> - .maxlen = sizeof(dirty_writeback_interval),
> - .mode = 0644,
> - .proc_handler = dirty_writeback_centisecs_handler,
> - },
> - {
> - .procname = "dirty_expire_centisecs",
> - .data = &dirty_expire_interval,
> - .maxlen = sizeof(dirty_expire_interval),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ZERO,
> - },
> - {
> - .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 = &one_hundred,
> - },
> -#ifdef CONFIG_HUGETLB_PAGE
> - {
> - .procname = "nr_hugepages",
> - .data = NULL,
> - .maxlen = sizeof(unsigned long),
> - .mode = 0644,
> - .proc_handler = hugetlb_sysctl_handler,
> - },
> -#ifdef CONFIG_NUMA
> - {
> - .procname = "nr_hugepages_mempolicy",
> - .data = NULL,
> - .maxlen = sizeof(unsigned long),
> - .mode = 0644,
> - .proc_handler = &hugetlb_mempolicy_sysctl_handler,
> - },
> - {
> - .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 = "hugetlb_shm_group",
> - .data = &sysctl_hugetlb_shm_group,
> - .maxlen = sizeof(gid_t),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> - {
> - .procname = "nr_overcommit_hugepages",
> - .data = NULL,
> - .maxlen = sizeof(unsigned long),
> - .mode = 0644,
> - .proc_handler = hugetlb_overcommit_handler,
> - },
> -#endif
> - {
> - .procname = "lowmem_reserve_ratio",
> - .data = &sysctl_lowmem_reserve_ratio,
> - .maxlen = sizeof(sysctl_lowmem_reserve_ratio),
> - .mode = 0644,
> - .proc_handler = lowmem_reserve_ratio_sysctl_handler,
> - },
> - {
> - .procname = "drop_caches",
> - .data = &sysctl_drop_caches,
> - .maxlen = sizeof(int),
> - .mode = 0200,
> - .proc_handler = drop_caches_sysctl_handler,
> - .extra1 = SYSCTL_ONE,
> - .extra2 = &four,
> - },
> -#ifdef CONFIG_COMPACTION
> - {
> - .procname = "compact_memory",
> - .data = &sysctl_compact_memory,
> - .maxlen = sizeof(int),
> - .mode = 0200,
> - .proc_handler = sysctl_compaction_handler,
> - },
> - {
> - .procname = "extfrag_threshold",
> - .data = &sysctl_extfrag_threshold,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = &min_extfrag_threshold,
> - .extra2 = &max_extfrag_threshold,
> - },
> - {
> - .procname = "compact_unevictable_allowed",
> - .data = &sysctl_compact_unevictable_allowed,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax_warn_RT_change,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = SYSCTL_ONE,
> - },
> -
> -#endif /* CONFIG_COMPACTION */
> - {
> - .procname = "min_free_kbytes",
> - .data = &min_free_kbytes,
> - .maxlen = sizeof(min_free_kbytes),
> - .mode = 0644,
> - .proc_handler = min_free_kbytes_sysctl_handler,
> - .extra1 = SYSCTL_ZERO,
> - },
> - {
> - .procname = "watermark_boost_factor",
> - .data = &watermark_boost_factor,
> - .maxlen = sizeof(watermark_boost_factor),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ZERO,
> - },
> - {
> - .procname = "watermark_scale_factor",
> - .data = &watermark_scale_factor,
> - .maxlen = sizeof(watermark_scale_factor),
> - .mode = 0644,
> - .proc_handler = watermark_scale_factor_sysctl_handler,
> - .extra1 = SYSCTL_ONE,
> - .extra2 = &one_thousand,
> - },
> - {
> - .procname = "percpu_pagelist_fraction",
> - .data = &percpu_pagelist_fraction,
> - .maxlen = sizeof(percpu_pagelist_fraction),
> - .mode = 0644,
> - .proc_handler = percpu_pagelist_fraction_sysctl_handler,
> - .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 = "laptop_mode",
> - .data = &laptop_mode,
> - .maxlen = sizeof(laptop_mode),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_jiffies,
> - },
> - {
> - .procname = "block_dump",
> - .data = &block_dump,
> - .maxlen = sizeof(block_dump),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - .extra1 = SYSCTL_ZERO,
> - },
> - {
> - .procname = "vfs_cache_pressure",
> - .data = &sysctl_vfs_cache_pressure,
> - .maxlen = sizeof(sysctl_vfs_cache_pressure),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - .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,
> - .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,
> - .extra1 = SYSCTL_ZERO,
> - },
> - {
> - .procname = "min_unmapped_ratio",
> - .data = &sysctl_min_unmapped_ratio,
> - .maxlen = sizeof(sysctl_min_unmapped_ratio),
> - .mode = 0644,
> - .proc_handler = sysctl_min_unmapped_ratio_sysctl_handler,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = &one_hundred,
> - },
> - {
> - .procname = "min_slab_ratio",
> - .data = &sysctl_min_slab_ratio,
> - .maxlen = sizeof(sysctl_min_slab_ratio),
> - .mode = 0644,
> - .proc_handler = sysctl_min_slab_ratio_sysctl_handler,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = &one_hundred,
> - },
> -#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
> -#ifdef CONFIG_NUMA
> - {
> - .procname = "numa_zonelist_order",
> - .data = &numa_zonelist_order,
> - .maxlen = NUMA_ZONELIST_ORDER_LEN,
> - .mode = 0644,
> - .proc_handler = numa_zonelist_order_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
> -#ifdef CONFIG_HIGHMEM
> - {
> - .procname = "highmem_is_dirtyable",
> - .data = &vm_highmem_is_dirtyable,
> - .maxlen = sizeof(vm_highmem_is_dirtyable),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = SYSCTL_ONE,
> - },
> -#endif
> -#ifdef CONFIG_MEMORY_FAILURE
> - {
> - .procname = "memory_failure_early_kill",
> - .data = &sysctl_memory_failure_early_kill,
> - .maxlen = sizeof(sysctl_memory_failure_early_kill),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = SYSCTL_ONE,
> - },
> - {
> - .procname = "memory_failure_recovery",
> - .data = &sysctl_memory_failure_recovery,
> - .maxlen = sizeof(sysctl_memory_failure_recovery),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = SYSCTL_ONE,
> - },
> -#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
> -#ifdef CONFIG_USERFAULTFD
> - {
> - .procname = "unprivileged_userfaultfd",
> - .data = &sysctl_unprivileged_userfaultfd,
> - .maxlen = sizeof(sysctl_unprivileged_userfaultfd),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = SYSCTL_ONE,
> - },
> -#endif
> - { }
> -};
> -
> -static struct ctl_table fs_table[] = {
> - {
> - .procname = "inode-nr",
> - .data = &inodes_stat,
> - .maxlen = 2*sizeof(long),
> - .mode = 0444,
> - .proc_handler = proc_nr_inodes,
> - },
> - {
> - .procname = "inode-state",
> - .data = &inodes_stat,
> - .maxlen = 7*sizeof(long),
> - .mode = 0444,
> - .proc_handler = proc_nr_inodes,
> - },
> - {
> - .procname = "file-nr",
> - .data = &files_stat,
> - .maxlen = sizeof(files_stat),
> - .mode = 0444,
> - .proc_handler = proc_nr_files,
> - },
> - {
> - .procname = "file-max",
> - .data = &files_stat.max_files,
> - .maxlen = sizeof(files_stat.max_files),
> - .mode = 0644,
> - .proc_handler = proc_doulongvec_minmax,
> - .extra1 = &zero_ul,
> - .extra2 = &long_max,
> - },
> - {
> - .procname = "nr_open",
> - .data = &sysctl_nr_open,
> - .maxlen = sizeof(unsigned int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = &sysctl_nr_open_min,
> - .extra2 = &sysctl_nr_open_max,
> - },
> - {
> - .procname = "dentry-state",
> - .data = &dentry_stat,
> - .maxlen = 6*sizeof(long),
> - .mode = 0444,
> - .proc_handler = proc_nr_dentry,
> - },
> - {
> - .procname = "overflowuid",
> - .data = &fs_overflowuid,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = &minolduid,
> - .extra2 = &maxolduid,
> - },
> - {
> - .procname = "overflowgid",
> - .data = &fs_overflowgid,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = &minolduid,
> - .extra2 = &maxolduid,
> - },
> -#ifdef CONFIG_FILE_LOCKING
> - {
> - .procname = "leases-enable",
> - .data = &leases_enable,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> -#endif
> -#ifdef CONFIG_DNOTIFY
> - {
> - .procname = "dir-notify-enable",
> - .data = &dir_notify_enable,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> -#endif
> -#ifdef CONFIG_MMU
> -#ifdef CONFIG_FILE_LOCKING
> - {
> - .procname = "lease-break-time",
> - .data = &lease_break_time,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec,
> - },
> -#endif
> -#ifdef CONFIG_AIO
> - {
> - .procname = "aio-nr",
> - .data = &aio_nr,
> - .maxlen = sizeof(aio_nr),
> - .mode = 0444,
> - .proc_handler = proc_doulongvec_minmax,
> - },
> - {
> - .procname = "aio-max-nr",
> - .data = &aio_max_nr,
> - .maxlen = sizeof(aio_max_nr),
> - .mode = 0644,
> - .proc_handler = proc_doulongvec_minmax,
> - },
> -#endif /* CONFIG_AIO */
> -#ifdef CONFIG_INOTIFY_USER
> - {
> - .procname = "inotify",
> - .mode = 0555,
> - .child = inotify_table,
> - },
> -#endif
> -#ifdef CONFIG_EPOLL
> - {
> - .procname = "epoll",
> - .mode = 0555,
> - .child = epoll_table,
> - },
> -#endif
> -#endif
> - {
> - .procname = "protected_symlinks",
> - .data = &sysctl_protected_symlinks,
> - .maxlen = sizeof(int),
> - .mode = 0600,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = SYSCTL_ONE,
> - },
> - {
> - .procname = "protected_hardlinks",
> - .data = &sysctl_protected_hardlinks,
> - .maxlen = sizeof(int),
> - .mode = 0600,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = SYSCTL_ONE,
> - },
> - {
> - .procname = "protected_fifos",
> - .data = &sysctl_protected_fifos,
> - .maxlen = sizeof(int),
> - .mode = 0600,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = &two,
> - },
> - {
> - .procname = "protected_regular",
> - .data = &sysctl_protected_regular,
> - .maxlen = sizeof(int),
> - .mode = 0600,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = &two,
> - },
> - {
> - .procname = "suid_dumpable",
> - .data = &suid_dumpable,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax_coredump,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = &two,
> - },
> -#if defined(CONFIG_BINFMT_MISC) || defined(CONFIG_BINFMT_MISC_MODULE)
> - {
> - .procname = "binfmt_misc",
> - .mode = 0555,
> - .child = sysctl_mount_point,
> - },
> -#endif
> - {
> - .procname = "pipe-max-size",
> - .data = &pipe_max_size,
> - .maxlen = sizeof(pipe_max_size),
> - .mode = 0644,
> - .proc_handler = proc_dopipe_max_size,
> - },
> - {
> - .procname = "pipe-user-pages-hard",
> - .data = &pipe_user_pages_hard,
> - .maxlen = sizeof(pipe_user_pages_hard),
> - .mode = 0644,
> - .proc_handler = proc_doulongvec_minmax,
> - },
> - {
> - .procname = "pipe-user-pages-soft",
> - .data = &pipe_user_pages_soft,
> - .maxlen = sizeof(pipe_user_pages_soft),
> - .mode = 0644,
> - .proc_handler = proc_doulongvec_minmax,
> - },
> - {
> - .procname = "mount-max",
> - .data = &sysctl_mount_max,
> - .maxlen = sizeof(unsigned int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec_minmax,
> - .extra1 = SYSCTL_ONE,
> - },
> - { }
> -};
> -
> -static struct ctl_table debug_table[] = {
> -#ifdef CONFIG_SYSCTL_EXCEPTION_TRACE
> - {
> - .procname = "exception-trace",
> - .data = &show_unhandled_signals,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_dointvec
> - },
> -#endif
> -#if defined(CONFIG_OPTPROBES)
> - {
> - .procname = "kprobes-optimization",
> - .data = &sysctl_kprobes_optimization,
> - .maxlen = sizeof(int),
> - .mode = 0644,
> - .proc_handler = proc_kprobes_optimization_handler,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = SYSCTL_ONE,
> - },
> -#endif
> - { }
> -};
> -
> -static struct ctl_table dev_table[] = {
> - { }
> -};
> -
> -int __init sysctl_init(void)
> -{
> - struct ctl_table_header *hdr;
> -
> - hdr = register_sysctl_table(sysctl_base_table);
> - kmemleak_not_leak(hdr);
> - return 0;
> -}
> -
> -#endif /* CONFIG_SYSCTL */
> -
> -/*
> - * /proc/sys support
> - */
> -
> +#endif /* CONFIG_SYSCTL */
> +
> +/*
> + * /proc/sys support
> + */
> +
> #ifdef CONFIG_PROC_SYSCTL
>
> static int _proc_do_string(char *data, int maxlen, int write,
> @@ -3307,95 +1577,1788 @@ int proc_dointvec(struct ctl_table *table, int write,
> return -ENOSYS;
> }
>
> -int proc_douintvec(struct ctl_table *table, int write,
> - void __user *buffer, size_t *lenp, loff_t *ppos)
> +int proc_douintvec(struct ctl_table *table, int write,
> + void __user *buffer, size_t *lenp, loff_t *ppos)
> +{
> + return -ENOSYS;
> +}
> +
> +int proc_dointvec_minmax(struct ctl_table *table, int write,
> + void __user *buffer, size_t *lenp, loff_t *ppos)
> +{
> + return -ENOSYS;
> +}
> +
> +int proc_douintvec_minmax(struct ctl_table *table, int write,
> + void __user *buffer, size_t *lenp, loff_t *ppos)
> +{
> + return -ENOSYS;
> +}
> +
> +int proc_dointvec_jiffies(struct ctl_table *table, int write,
> + void __user *buffer, size_t *lenp, loff_t *ppos)
> +{
> + return -ENOSYS;
> +}
> +
> +int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write,
> + void __user *buffer, size_t *lenp, loff_t *ppos)
> +{
> + return -ENOSYS;
> +}
> +
> +int proc_dointvec_ms_jiffies(struct ctl_table *table, int write,
> + void __user *buffer, size_t *lenp, loff_t *ppos)
> {
> return -ENOSYS;
> }
>
> -int proc_dointvec_minmax(struct ctl_table *table, int write,
> +int proc_doulongvec_minmax(struct ctl_table *table, int write,
> void __user *buffer, size_t *lenp, loff_t *ppos)
> {
> return -ENOSYS;
> }
>
> -int proc_douintvec_minmax(struct ctl_table *table, int write,
> - void __user *buffer, size_t *lenp, loff_t *ppos)
> +int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write,
> + void __user *buffer,
> + size_t *lenp, loff_t *ppos)
> {
> - return -ENOSYS;
> + return -ENOSYS;
> }
>
> -int proc_dointvec_jiffies(struct ctl_table *table, int write,
> - void __user *buffer, size_t *lenp, loff_t *ppos)
> +int proc_do_large_bitmap(struct ctl_table *table, int write,
> + void __user *buffer, size_t *lenp, loff_t *ppos)
> {
> return -ENOSYS;
> }
>
> -int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write,
> - void __user *buffer, size_t *lenp, loff_t *ppos)
> -{
> - return -ENOSYS;
> -}
> +#endif /* CONFIG_PROC_SYSCTL */
> +
> +#if defined(CONFIG_SYSCTL)
> +int proc_do_static_key(struct ctl_table *table, int write,
> + void __user *buffer, size_t *lenp,
> + loff_t *ppos)
> +{
> + struct static_key *key = (struct static_key *)table->data;
> + static DEFINE_MUTEX(static_key_mutex);
> + int val, ret;
> + struct ctl_table tmp = {
> + .data = &val,
> + .maxlen = sizeof(val),
> + .mode = table->mode,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = SYSCTL_ONE,
> + };
> +
> + if (write && !capable(CAP_SYS_ADMIN))
> + return -EPERM;
> +
> + mutex_lock(&static_key_mutex);
> + val = static_key_enabled(key);
> + ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos);
> + if (write && !ret) {
> + if (val)
> + static_key_enable(key);
> + else
> + static_key_disable(key);
> + }
> + mutex_unlock(&static_key_mutex);
> + return ret;
> +}
> +
> +static struct ctl_table kern_table[] = {
> + {
> + .procname = "sched_child_runs_first",
> + .data = &sysctl_sched_child_runs_first,
> + .maxlen = sizeof(unsigned int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> +#ifdef CONFIG_SCHED_DEBUG
> + {
> + .procname = "sched_min_granularity_ns",
> + .data = &sysctl_sched_min_granularity,
> + .maxlen = sizeof(unsigned int),
> + .mode = 0644,
> + .proc_handler = sched_proc_update_handler,
> + .extra1 = &min_sched_granularity_ns,
> + .extra2 = &max_sched_granularity_ns,
> + },
> + {
> + .procname = "sched_latency_ns",
> + .data = &sysctl_sched_latency,
> + .maxlen = sizeof(unsigned int),
> + .mode = 0644,
> + .proc_handler = sched_proc_update_handler,
> + .extra1 = &min_sched_granularity_ns,
> + .extra2 = &max_sched_granularity_ns,
> + },
> + {
> + .procname = "sched_wakeup_granularity_ns",
> + .data = &sysctl_sched_wakeup_granularity,
> + .maxlen = sizeof(unsigned int),
> + .mode = 0644,
> + .proc_handler = sched_proc_update_handler,
> + .extra1 = &min_wakeup_granularity_ns,
> + .extra2 = &max_wakeup_granularity_ns,
> + },
> +#ifdef CONFIG_SMP
> + {
> + .procname = "sched_tunable_scaling",
> + .data = &sysctl_sched_tunable_scaling,
> + .maxlen = sizeof(enum sched_tunable_scaling),
> + .mode = 0644,
> + .proc_handler = sched_proc_update_handler,
> + .extra1 = &min_sched_tunable_scaling,
> + .extra2 = &max_sched_tunable_scaling,
> + },
> + {
> + .procname = "sched_migration_cost_ns",
> + .data = &sysctl_sched_migration_cost,
> + .maxlen = sizeof(unsigned int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> + {
> + .procname = "sched_nr_migrate",
> + .data = &sysctl_sched_nr_migrate,
> + .maxlen = sizeof(unsigned int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> +#ifdef CONFIG_SCHEDSTATS
> + {
> + .procname = "sched_schedstats",
> + .data = NULL,
> + .maxlen = sizeof(unsigned int),
> + .mode = 0644,
> + .proc_handler = sysctl_schedstats,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = SYSCTL_ONE,
> + },
> +#endif /* CONFIG_SCHEDSTATS */
> +#endif /* CONFIG_SMP */
> +#ifdef CONFIG_NUMA_BALANCING
> + {
> + .procname = "numa_balancing_scan_delay_ms",
> + .data = &sysctl_numa_balancing_scan_delay,
> + .maxlen = sizeof(unsigned int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> + {
> + .procname = "numa_balancing_scan_period_min_ms",
> + .data = &sysctl_numa_balancing_scan_period_min,
> + .maxlen = sizeof(unsigned int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> + {
> + .procname = "numa_balancing_scan_period_max_ms",
> + .data = &sysctl_numa_balancing_scan_period_max,
> + .maxlen = sizeof(unsigned int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> + {
> + .procname = "numa_balancing_scan_size_mb",
> + .data = &sysctl_numa_balancing_scan_size,
> + .maxlen = sizeof(unsigned int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ONE,
> + },
> + {
> + .procname = "numa_balancing",
> + .data = NULL, /* filled in by handler */
> + .maxlen = sizeof(unsigned int),
> + .mode = 0644,
> + .proc_handler = sysctl_numa_balancing,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = SYSCTL_ONE,
> + },
> +#endif /* CONFIG_NUMA_BALANCING */
> +#endif /* CONFIG_SCHED_DEBUG */
> + {
> + .procname = "sched_rt_period_us",
> + .data = &sysctl_sched_rt_period,
> + .maxlen = sizeof(unsigned int),
> + .mode = 0644,
> + .proc_handler = sched_rt_handler,
> + },
> + {
> + .procname = "sched_rt_runtime_us",
> + .data = &sysctl_sched_rt_runtime,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = sched_rt_handler,
> + },
> + {
> + .procname = "sched_rr_timeslice_ms",
> + .data = &sysctl_sched_rr_timeslice,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = sched_rr_handler,
> + },
> +#ifdef CONFIG_UCLAMP_TASK
> + {
> + .procname = "sched_util_clamp_min",
> + .data = &sysctl_sched_uclamp_util_min,
> + .maxlen = sizeof(unsigned int),
> + .mode = 0644,
> + .proc_handler = sysctl_sched_uclamp_handler,
> + },
> + {
> + .procname = "sched_util_clamp_max",
> + .data = &sysctl_sched_uclamp_util_max,
> + .maxlen = sizeof(unsigned int),
> + .mode = 0644,
> + .proc_handler = sysctl_sched_uclamp_handler,
> + },
> +#endif
> +#ifdef CONFIG_SCHED_AUTOGROUP
> + {
> + .procname = "sched_autogroup_enabled",
> + .data = &sysctl_sched_autogroup_enabled,
> + .maxlen = sizeof(unsigned int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = SYSCTL_ONE,
> + },
> +#endif
> +#ifdef CONFIG_CFS_BANDWIDTH
> + {
> + .procname = "sched_cfs_bandwidth_slice_us",
> + .data = &sysctl_sched_cfs_bandwidth_slice,
> + .maxlen = sizeof(unsigned int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ONE,
> + },
> +#endif
> +#if defined(CONFIG_ENERGY_MODEL) && defined(CONFIG_CPU_FREQ_GOV_SCHEDUTIL)
> + {
> + .procname = "sched_energy_aware",
> + .data = &sysctl_sched_energy_aware,
> + .maxlen = sizeof(unsigned int),
> + .mode = 0644,
> + .proc_handler = sched_energy_aware_handler,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = SYSCTL_ONE,
> + },
> +#endif
> +#ifdef CONFIG_PROVE_LOCKING
> + {
> + .procname = "prove_locking",
> + .data = &prove_locking,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> +#endif
> +#ifdef CONFIG_LOCK_STAT
> + {
> + .procname = "lock_stat",
> + .data = &lock_stat,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> +#endif
> + {
> + .procname = "panic",
> + .data = &panic_timeout,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> +#ifdef CONFIG_COREDUMP
> + {
> + .procname = "core_uses_pid",
> + .data = &core_uses_pid,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> + {
> + .procname = "core_pattern",
> + .data = core_pattern,
> + .maxlen = CORENAME_MAX_SIZE,
> + .mode = 0644,
> + .proc_handler = proc_dostring_coredump,
> + },
> + {
> + .procname = "core_pipe_limit",
> + .data = &core_pipe_limit,
> + .maxlen = sizeof(unsigned int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> +#endif
> +#ifdef CONFIG_PROC_SYSCTL
> + {
> + .procname = "tainted",
> + .maxlen = sizeof(long),
> + .mode = 0644,
> + .proc_handler = proc_taint,
> + },
> + {
> + .procname = "sysctl_writes_strict",
> + .data = &sysctl_writes_strict,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = &neg_one,
> + .extra2 = SYSCTL_ONE,
> + },
> +#endif
> +#ifdef CONFIG_LATENCYTOP
> + {
> + .procname = "latencytop",
> + .data = &latencytop_enabled,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = sysctl_latencytop,
> + },
> +#endif
> +#ifdef CONFIG_BLK_DEV_INITRD
> + {
> + .procname = "real-root-dev",
> + .data = &real_root_dev,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> +#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",
> + .data = &pwrsw_enabled,
> + .maxlen = sizeof (int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> +#endif
> +#ifdef CONFIG_SYSCTL_ARCH_UNALIGN_ALLOW
> + {
> + .procname = "unaligned-trap",
> + .data = &unaligned_enabled,
> + .maxlen = sizeof (int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> +#endif
> + {
> + .procname = "ctrl-alt-del",
> + .data = &C_A_D,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> +#ifdef CONFIG_FUNCTION_TRACER
> + {
> + .procname = "ftrace_enabled",
> + .data = &ftrace_enabled,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = ftrace_enable_sysctl,
> + },
> +#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 = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> + {
> + .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_KEXEC_CORE
> + {
> + .procname = "kexec_load_disabled",
> + .data = &kexec_load_disabled,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + /* only handle a transition from default "0" to "1" */
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ONE,
> + .extra2 = SYSCTL_ONE,
> + },
> +#endif
> +#ifdef CONFIG_MODULES
> + {
> + .procname = "modprobe",
> + .data = &modprobe_path,
> + .maxlen = KMOD_PATH_LEN,
> + .mode = 0644,
> + .proc_handler = proc_dostring,
> + },
> + {
> + .procname = "modules_disabled",
> + .data = &modules_disabled,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + /* only handle a transition from default "0" to "1" */
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ONE,
> + .extra2 = SYSCTL_ONE,
> + },
> +#endif
> +#ifdef CONFIG_UEVENT_HELPER
> + {
> + .procname = "hotplug",
> + .data = &uevent_helper,
> + .maxlen = UEVENT_HELPER_PATH_LEN,
> + .mode = 0644,
> + .proc_handler = proc_dostring,
> + },
> +#endif
> +#ifdef CONFIG_CHR_DEV_SG
> + {
> + .procname = "sg-big-buff",
> + .data = &sg_big_buff,
> + .maxlen = sizeof (int),
> + .mode = 0444,
> + .proc_handler = proc_dointvec,
> + },
> +#endif
> +#ifdef CONFIG_BSD_PROCESS_ACCT
> + {
> + .procname = "acct",
> + .data = &acct_parm,
> + .maxlen = 3*sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> +#endif
> +#ifdef CONFIG_MAGIC_SYSRQ
> + {
> + .procname = "sysrq",
> + .data = NULL,
> + .maxlen = sizeof (int),
> + .mode = 0644,
> + .proc_handler = sysrq_sysctl_handler,
> + },
> +#endif
> +#ifdef CONFIG_PROC_SYSCTL
> + {
> + .procname = "cad_pid",
> + .data = NULL,
> + .maxlen = sizeof (int),
> + .mode = 0600,
> + .proc_handler = proc_do_cad_pid,
> + },
> +#endif
> + {
> + .procname = "threads-max",
> + .data = NULL,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = sysctl_max_threads,
> + },
> + {
> + .procname = "random",
> + .mode = 0555,
> + .child = random_table,
> + },
> + {
> + .procname = "usermodehelper",
> + .mode = 0555,
> + .child = usermodehelper_table,
> + },
> +#ifdef CONFIG_FW_LOADER_USER_HELPER
> + {
> + .procname = "firmware_config",
> + .mode = 0555,
> + .child = firmware_config_table,
> + },
> +#endif
> + {
> + .procname = "overflowuid",
> + .data = &overflowuid,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = &minolduid,
> + .extra2 = &maxolduid,
> + },
> + {
> + .procname = "overflowgid",
> + .data = &overflowgid,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = &minolduid,
> + .extra2 = &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,
> + },
> +#if defined CONFIG_PRINTK
> + {
> + .procname = "printk",
> + .data = &console_loglevel,
> + .maxlen = 4*sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> + {
> + .procname = "printk_ratelimit",
> + .data = &printk_ratelimit_state.interval,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_jiffies,
> + },
> + {
> + .procname = "printk_ratelimit_burst",
> + .data = &printk_ratelimit_state.burst,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> + {
> + .procname = "printk_delay",
> + .data = &printk_delay_msec,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = &ten_thousand,
> + },
> + {
> + .procname = "printk_devkmsg",
> + .data = devkmsg_log_str,
> + .maxlen = DEVKMSG_STR_MAX_SIZE,
> + .mode = 0644,
> + .proc_handler = devkmsg_sysctl_set_loglvl,
> + },
> + {
> + .procname = "dmesg_restrict",
> + .data = &dmesg_restrict,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax_sysadmin,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = SYSCTL_ONE,
> + },
> + {
> + .procname = "kptr_restrict",
> + .data = &kptr_restrict,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax_sysadmin,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = &two,
> + },
> +#endif
> + {
> + .procname = "ngroups_max",
> + .data = &ngroups_max,
> + .maxlen = sizeof (int),
> + .mode = 0444,
> + .proc_handler = proc_dointvec,
> + },
> + {
> + .procname = "cap_last_cap",
> + .data = (void *)&cap_last_cap,
> + .maxlen = sizeof(int),
> + .mode = 0444,
> + .proc_handler = proc_dointvec,
> + },
> +#if defined(CONFIG_LOCKUP_DETECTOR)
> + {
> + .procname = "watchdog",
> + .data = &watchdog_user_enabled,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_watchdog,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = SYSCTL_ONE,
> + },
> + {
> + .procname = "watchdog_thresh",
> + .data = &watchdog_thresh,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_watchdog_thresh,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = &sixty,
> + },
> + {
> + .procname = "nmi_watchdog",
> + .data = &nmi_watchdog_user_enabled,
> + .maxlen = sizeof(int),
> + .mode = NMI_WATCHDOG_SYSCTL_PERM,
> + .proc_handler = proc_nmi_watchdog,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = SYSCTL_ONE,
> + },
> + {
> + .procname = "watchdog_cpumask",
> + .data = &watchdog_cpumask_bits,
> + .maxlen = NR_CPUS,
> + .mode = 0644,
> + .proc_handler = proc_watchdog_cpumask,
> + },
> +#ifdef CONFIG_SOFTLOCKUP_DETECTOR
> + {
> + .procname = "soft_watchdog",
> + .data = &soft_watchdog_user_enabled,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_soft_watchdog,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = SYSCTL_ONE,
> + },
> + {
> + .procname = "softlockup_panic",
> + .data = &softlockup_panic,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = SYSCTL_ONE,
> + },
> +#ifdef CONFIG_SMP
> + {
> + .procname = "softlockup_all_cpu_backtrace",
> + .data = &sysctl_softlockup_all_cpu_backtrace,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = SYSCTL_ONE,
> + },
> +#endif /* CONFIG_SMP */
> +#endif
> +#ifdef CONFIG_HARDLOCKUP_DETECTOR
> + {
> + .procname = "hardlockup_panic",
> + .data = &hardlockup_panic,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = SYSCTL_ONE,
> + },
> +#ifdef CONFIG_SMP
> + {
> + .procname = "hardlockup_all_cpu_backtrace",
> + .data = &sysctl_hardlockup_all_cpu_backtrace,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = SYSCTL_ONE,
> + },
> +#endif /* CONFIG_SMP */
> +#endif
> +#endif
> +
> +#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)
> + {
> + .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,
> + },
> +#ifdef CONFIG_DEBUG_STACKOVERFLOW
> + {
> + .procname = "panic_on_stackoverflow",
> + .data = &sysctl_panic_on_stackoverflow,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> +#endif
> + {
> + .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",
> + .data = &randomize_va_space,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .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",
> + .data = &no_unaligned_warning,
> + .maxlen = sizeof (int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> +#endif
> +#ifdef CONFIG_IA64
> + {
> + .procname = "unaligned-dump-stack",
> + .data = &unaligned_dump_stack,
> + .maxlen = sizeof (int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> +#endif
> +#ifdef CONFIG_DETECT_HUNG_TASK
> + {
> + .procname = "hung_task_panic",
> + .data = &sysctl_hung_task_panic,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = SYSCTL_ONE,
> + },
> + {
> + .procname = "hung_task_check_count",
> + .data = &sysctl_hung_task_check_count,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ZERO,
> + },
> + {
> + .procname = "hung_task_timeout_secs",
> + .data = &sysctl_hung_task_timeout_secs,
> + .maxlen = sizeof(unsigned long),
> + .mode = 0644,
> + .proc_handler = proc_dohung_task_timeout_secs,
> + .extra2 = &hung_task_timeout_max,
> + },
> + {
> + .procname = "hung_task_check_interval_secs",
> + .data = &sysctl_hung_task_check_interval_secs,
> + .maxlen = sizeof(unsigned long),
> + .mode = 0644,
> + .proc_handler = proc_dohung_task_timeout_secs,
> + .extra2 = &hung_task_timeout_max,
> + },
> + {
> + .procname = "hung_task_warnings",
> + .data = &sysctl_hung_task_warnings,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = &neg_one,
> + },
> +#endif
> +#ifdef CONFIG_RT_MUTEXES
> + {
> + .procname = "max_lock_depth",
> + .data = &max_lock_depth,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> +#endif
> + {
> + .procname = "poweroff_cmd",
> + .data = &poweroff_cmd,
> + .maxlen = POWEROFF_CMD_PATH_LEN,
> + .mode = 0644,
> + .proc_handler = proc_dostring,
> + },
> +#ifdef CONFIG_KEYS
> + {
> + .procname = "keys",
> + .mode = 0555,
> + .child = key_sysctls,
> + },
> +#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_proc_update_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 = &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 = &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 = &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,
> + },
> +#if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ_COMMON)
> + {
> + .procname = "timer_migration",
> + .data = &sysctl_timer_migration,
> + .maxlen = sizeof(unsigned int),
> + .mode = 0644,
> + .proc_handler = timer_migration_handler,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = SYSCTL_ONE,
> + },
> +#endif
> +#ifdef CONFIG_BPF_SYSCALL
> + {
> + .procname = "unprivileged_bpf_disabled",
> + .data = &sysctl_unprivileged_bpf_disabled,
> + .maxlen = sizeof(sysctl_unprivileged_bpf_disabled),
> + .mode = 0644,
> + /* only handle a transition from default "0" to "1" */
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ONE,
> + .extra2 = SYSCTL_ONE,
> + },
> + {
> + .procname = "bpf_stats_enabled",
> + .data = &bpf_stats_enabled_key.key,
> + .maxlen = sizeof(bpf_stats_enabled_key),
> + .mode = 0644,
> + .proc_handler = proc_do_static_key,
> + },
> +#endif
> +#if defined(CONFIG_TREE_RCU)
> + {
> + .procname = "panic_on_rcu_stall",
> + .data = &sysctl_panic_on_rcu_stall,
> + .maxlen = sizeof(sysctl_panic_on_rcu_stall),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = SYSCTL_ONE,
> + },
> +#endif
> +#ifdef CONFIG_STACKLEAK_RUNTIME_DISABLE
> + {
> + .procname = "stack_erasing",
> + .data = NULL,
> + .maxlen = sizeof(int),
> + .mode = 0600,
> + .proc_handler = stack_erasing_sysctl,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = SYSCTL_ONE,
> + },
> +#endif
> + { }
> +};
>
> -int proc_dointvec_ms_jiffies(struct ctl_table *table, int write,
> - void __user *buffer, size_t *lenp, loff_t *ppos)
> -{
> - return -ENOSYS;
> -}
> +static struct ctl_table vm_table[] = {
> + {
> + .procname = "overcommit_memory",
> + .data = &sysctl_overcommit_memory,
> + .maxlen = sizeof(sysctl_overcommit_memory),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = &two,
> + },
> + {
> + .procname = "panic_on_oom",
> + .data = &sysctl_panic_on_oom,
> + .maxlen = sizeof(sysctl_panic_on_oom),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = &two,
> + },
> + {
> + .procname = "oom_kill_allocating_task",
> + .data = &sysctl_oom_kill_allocating_task,
> + .maxlen = sizeof(sysctl_oom_kill_allocating_task),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> + {
> + .procname = "oom_dump_tasks",
> + .data = &sysctl_oom_dump_tasks,
> + .maxlen = sizeof(sysctl_oom_dump_tasks),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> + {
> + .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,
> + },
> + {
> + .procname = "dirty_background_ratio",
> + .data = &dirty_background_ratio,
> + .maxlen = sizeof(dirty_background_ratio),
> + .mode = 0644,
> + .proc_handler = dirty_background_ratio_handler,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = &one_hundred,
> + },
> + {
> + .procname = "dirty_background_bytes",
> + .data = &dirty_background_bytes,
> + .maxlen = sizeof(dirty_background_bytes),
> + .mode = 0644,
> + .proc_handler = dirty_background_bytes_handler,
> + .extra1 = &one_ul,
> + },
> + {
> + .procname = "dirty_ratio",
> + .data = &vm_dirty_ratio,
> + .maxlen = sizeof(vm_dirty_ratio),
> + .mode = 0644,
> + .proc_handler = dirty_ratio_handler,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = &one_hundred,
> + },
> + {
> + .procname = "dirty_bytes",
> + .data = &vm_dirty_bytes,
> + .maxlen = sizeof(vm_dirty_bytes),
> + .mode = 0644,
> + .proc_handler = dirty_bytes_handler,
> + .extra1 = &dirty_bytes_min,
> + },
> + {
> + .procname = "dirty_writeback_centisecs",
> + .data = &dirty_writeback_interval,
> + .maxlen = sizeof(dirty_writeback_interval),
> + .mode = 0644,
> + .proc_handler = dirty_writeback_centisecs_handler,
> + },
> + {
> + .procname = "dirty_expire_centisecs",
> + .data = &dirty_expire_interval,
> + .maxlen = sizeof(dirty_expire_interval),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ZERO,
> + },
> + {
> + .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 = &one_hundred,
> + },
> +#ifdef CONFIG_HUGETLB_PAGE
> + {
> + .procname = "nr_hugepages",
> + .data = NULL,
> + .maxlen = sizeof(unsigned long),
> + .mode = 0644,
> + .proc_handler = hugetlb_sysctl_handler,
> + },
> +#ifdef CONFIG_NUMA
> + {
> + .procname = "nr_hugepages_mempolicy",
> + .data = NULL,
> + .maxlen = sizeof(unsigned long),
> + .mode = 0644,
> + .proc_handler = &hugetlb_mempolicy_sysctl_handler,
> + },
> + {
> + .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 = "hugetlb_shm_group",
> + .data = &sysctl_hugetlb_shm_group,
> + .maxlen = sizeof(gid_t),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> + {
> + .procname = "nr_overcommit_hugepages",
> + .data = NULL,
> + .maxlen = sizeof(unsigned long),
> + .mode = 0644,
> + .proc_handler = hugetlb_overcommit_handler,
> + },
> +#endif
> + {
> + .procname = "lowmem_reserve_ratio",
> + .data = &sysctl_lowmem_reserve_ratio,
> + .maxlen = sizeof(sysctl_lowmem_reserve_ratio),
> + .mode = 0644,
> + .proc_handler = lowmem_reserve_ratio_sysctl_handler,
> + },
> + {
> + .procname = "drop_caches",
> + .data = &sysctl_drop_caches,
> + .maxlen = sizeof(int),
> + .mode = 0200,
> + .proc_handler = drop_caches_sysctl_handler,
> + .extra1 = SYSCTL_ONE,
> + .extra2 = &four,
> + },
> +#ifdef CONFIG_COMPACTION
> + {
> + .procname = "compact_memory",
> + .data = &sysctl_compact_memory,
> + .maxlen = sizeof(int),
> + .mode = 0200,
> + .proc_handler = sysctl_compaction_handler,
> + },
> + {
> + .procname = "extfrag_threshold",
> + .data = &sysctl_extfrag_threshold,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = &min_extfrag_threshold,
> + .extra2 = &max_extfrag_threshold,
> + },
> + {
> + .procname = "compact_unevictable_allowed",
> + .data = &sysctl_compact_unevictable_allowed,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax_warn_RT_change,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = SYSCTL_ONE,
> + },
> +
> +#endif /* CONFIG_COMPACTION */
> + {
> + .procname = "min_free_kbytes",
> + .data = &min_free_kbytes,
> + .maxlen = sizeof(min_free_kbytes),
> + .mode = 0644,
> + .proc_handler = min_free_kbytes_sysctl_handler,
> + .extra1 = SYSCTL_ZERO,
> + },
> + {
> + .procname = "watermark_boost_factor",
> + .data = &watermark_boost_factor,
> + .maxlen = sizeof(watermark_boost_factor),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ZERO,
> + },
> + {
> + .procname = "watermark_scale_factor",
> + .data = &watermark_scale_factor,
> + .maxlen = sizeof(watermark_scale_factor),
> + .mode = 0644,
> + .proc_handler = watermark_scale_factor_sysctl_handler,
> + .extra1 = SYSCTL_ONE,
> + .extra2 = &one_thousand,
> + },
> + {
> + .procname = "percpu_pagelist_fraction",
> + .data = &percpu_pagelist_fraction,
> + .maxlen = sizeof(percpu_pagelist_fraction),
> + .mode = 0644,
> + .proc_handler = percpu_pagelist_fraction_sysctl_handler,
> + .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 = "laptop_mode",
> + .data = &laptop_mode,
> + .maxlen = sizeof(laptop_mode),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_jiffies,
> + },
> + {
> + .procname = "block_dump",
> + .data = &block_dump,
> + .maxlen = sizeof(block_dump),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + .extra1 = SYSCTL_ZERO,
> + },
> + {
> + .procname = "vfs_cache_pressure",
> + .data = &sysctl_vfs_cache_pressure,
> + .maxlen = sizeof(sysctl_vfs_cache_pressure),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + .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,
> + .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,
> + .extra1 = SYSCTL_ZERO,
> + },
> + {
> + .procname = "min_unmapped_ratio",
> + .data = &sysctl_min_unmapped_ratio,
> + .maxlen = sizeof(sysctl_min_unmapped_ratio),
> + .mode = 0644,
> + .proc_handler = sysctl_min_unmapped_ratio_sysctl_handler,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = &one_hundred,
> + },
> + {
> + .procname = "min_slab_ratio",
> + .data = &sysctl_min_slab_ratio,
> + .maxlen = sizeof(sysctl_min_slab_ratio),
> + .mode = 0644,
> + .proc_handler = sysctl_min_slab_ratio_sysctl_handler,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = &one_hundred,
> + },
> +#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
> +#ifdef CONFIG_NUMA
> + {
> + .procname = "numa_zonelist_order",
> + .data = &numa_zonelist_order,
> + .maxlen = NUMA_ZONELIST_ORDER_LEN,
> + .mode = 0644,
> + .proc_handler = numa_zonelist_order_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
> +#ifdef CONFIG_HIGHMEM
> + {
> + .procname = "highmem_is_dirtyable",
> + .data = &vm_highmem_is_dirtyable,
> + .maxlen = sizeof(vm_highmem_is_dirtyable),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = SYSCTL_ONE,
> + },
> +#endif
> +#ifdef CONFIG_MEMORY_FAILURE
> + {
> + .procname = "memory_failure_early_kill",
> + .data = &sysctl_memory_failure_early_kill,
> + .maxlen = sizeof(sysctl_memory_failure_early_kill),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = SYSCTL_ONE,
> + },
> + {
> + .procname = "memory_failure_recovery",
> + .data = &sysctl_memory_failure_recovery,
> + .maxlen = sizeof(sysctl_memory_failure_recovery),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = SYSCTL_ONE,
> + },
> +#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
> +#ifdef CONFIG_USERFAULTFD
> + {
> + .procname = "unprivileged_userfaultfd",
> + .data = &sysctl_unprivileged_userfaultfd,
> + .maxlen = sizeof(sysctl_unprivileged_userfaultfd),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = SYSCTL_ONE,
> + },
> +#endif
> + { }
> +};
>
> -int proc_doulongvec_minmax(struct ctl_table *table, int write,
> - void __user *buffer, size_t *lenp, loff_t *ppos)
> -{
> - return -ENOSYS;
> -}
> +static struct ctl_table fs_table[] = {
> + {
> + .procname = "inode-nr",
> + .data = &inodes_stat,
> + .maxlen = 2*sizeof(long),
> + .mode = 0444,
> + .proc_handler = proc_nr_inodes,
> + },
> + {
> + .procname = "inode-state",
> + .data = &inodes_stat,
> + .maxlen = 7*sizeof(long),
> + .mode = 0444,
> + .proc_handler = proc_nr_inodes,
> + },
> + {
> + .procname = "file-nr",
> + .data = &files_stat,
> + .maxlen = sizeof(files_stat),
> + .mode = 0444,
> + .proc_handler = proc_nr_files,
> + },
> + {
> + .procname = "file-max",
> + .data = &files_stat.max_files,
> + .maxlen = sizeof(files_stat.max_files),
> + .mode = 0644,
> + .proc_handler = proc_doulongvec_minmax,
> + .extra1 = &zero_ul,
> + .extra2 = &long_max,
> + },
> + {
> + .procname = "nr_open",
> + .data = &sysctl_nr_open,
> + .maxlen = sizeof(unsigned int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = &sysctl_nr_open_min,
> + .extra2 = &sysctl_nr_open_max,
> + },
> + {
> + .procname = "dentry-state",
> + .data = &dentry_stat,
> + .maxlen = 6*sizeof(long),
> + .mode = 0444,
> + .proc_handler = proc_nr_dentry,
> + },
> + {
> + .procname = "overflowuid",
> + .data = &fs_overflowuid,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = &minolduid,
> + .extra2 = &maxolduid,
> + },
> + {
> + .procname = "overflowgid",
> + .data = &fs_overflowgid,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = &minolduid,
> + .extra2 = &maxolduid,
> + },
> +#ifdef CONFIG_FILE_LOCKING
> + {
> + .procname = "leases-enable",
> + .data = &leases_enable,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> +#endif
> +#ifdef CONFIG_DNOTIFY
> + {
> + .procname = "dir-notify-enable",
> + .data = &dir_notify_enable,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> +#endif
> +#ifdef CONFIG_MMU
> +#ifdef CONFIG_FILE_LOCKING
> + {
> + .procname = "lease-break-time",
> + .data = &lease_break_time,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
> + },
> +#endif
> +#ifdef CONFIG_AIO
> + {
> + .procname = "aio-nr",
> + .data = &aio_nr,
> + .maxlen = sizeof(aio_nr),
> + .mode = 0444,
> + .proc_handler = proc_doulongvec_minmax,
> + },
> + {
> + .procname = "aio-max-nr",
> + .data = &aio_max_nr,
> + .maxlen = sizeof(aio_max_nr),
> + .mode = 0644,
> + .proc_handler = proc_doulongvec_minmax,
> + },
> +#endif /* CONFIG_AIO */
> +#ifdef CONFIG_INOTIFY_USER
> + {
> + .procname = "inotify",
> + .mode = 0555,
> + .child = inotify_table,
> + },
> +#endif
> +#ifdef CONFIG_EPOLL
> + {
> + .procname = "epoll",
> + .mode = 0555,
> + .child = epoll_table,
> + },
> +#endif
> +#endif
> + {
> + .procname = "protected_symlinks",
> + .data = &sysctl_protected_symlinks,
> + .maxlen = sizeof(int),
> + .mode = 0600,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = SYSCTL_ONE,
> + },
> + {
> + .procname = "protected_hardlinks",
> + .data = &sysctl_protected_hardlinks,
> + .maxlen = sizeof(int),
> + .mode = 0600,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = SYSCTL_ONE,
> + },
> + {
> + .procname = "protected_fifos",
> + .data = &sysctl_protected_fifos,
> + .maxlen = sizeof(int),
> + .mode = 0600,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = &two,
> + },
> + {
> + .procname = "protected_regular",
> + .data = &sysctl_protected_regular,
> + .maxlen = sizeof(int),
> + .mode = 0600,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = &two,
> + },
> + {
> + .procname = "suid_dumpable",
> + .data = &suid_dumpable,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax_coredump,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = &two,
> + },
> +#if defined(CONFIG_BINFMT_MISC) || defined(CONFIG_BINFMT_MISC_MODULE)
> + {
> + .procname = "binfmt_misc",
> + .mode = 0555,
> + .child = sysctl_mount_point,
> + },
> +#endif
> + {
> + .procname = "pipe-max-size",
> + .data = &pipe_max_size,
> + .maxlen = sizeof(pipe_max_size),
> + .mode = 0644,
> + .proc_handler = proc_dopipe_max_size,
> + },
> + {
> + .procname = "pipe-user-pages-hard",
> + .data = &pipe_user_pages_hard,
> + .maxlen = sizeof(pipe_user_pages_hard),
> + .mode = 0644,
> + .proc_handler = proc_doulongvec_minmax,
> + },
> + {
> + .procname = "pipe-user-pages-soft",
> + .data = &pipe_user_pages_soft,
> + .maxlen = sizeof(pipe_user_pages_soft),
> + .mode = 0644,
> + .proc_handler = proc_doulongvec_minmax,
> + },
> + {
> + .procname = "mount-max",
> + .data = &sysctl_mount_max,
> + .maxlen = sizeof(unsigned int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec_minmax,
> + .extra1 = SYSCTL_ONE,
> + },
> + { }
> +};
>
> -int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write,
> - void __user *buffer,
> - size_t *lenp, loff_t *ppos)
> -{
> - return -ENOSYS;
> -}
> +static struct ctl_table debug_table[] = {
> +#ifdef CONFIG_SYSCTL_EXCEPTION_TRACE
> + {
> + .procname = "exception-trace",
> + .data = &show_unhandled_signals,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec
> + },
> +#endif
> +#if defined(CONFIG_OPTPROBES)
> + {
> + .procname = "kprobes-optimization",
> + .data = &sysctl_kprobes_optimization,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_kprobes_optimization_handler,
> + .extra1 = SYSCTL_ZERO,
> + .extra2 = SYSCTL_ONE,
> + },
> +#endif
> + { }
> +};
>
> -int proc_do_large_bitmap(struct ctl_table *table, int write,
> - void __user *buffer, size_t *lenp, loff_t *ppos)
> -{
> - return -ENOSYS;
> -}
> +static struct ctl_table dev_table[] = {
> + { }
> +};
>
> -#endif /* CONFIG_PROC_SYSCTL */
> +static struct ctl_table sysctl_base_table[] = {
> + {
> + .procname = "kernel",
> + .mode = 0555,
> + .child = kern_table,
> + },
> + {
> + .procname = "vm",
> + .mode = 0555,
> + .child = vm_table,
> + },
> + {
> + .procname = "fs",
> + .mode = 0555,
> + .child = fs_table,
> + },
> + {
> + .procname = "debug",
> + .mode = 0555,
> + .child = debug_table,
> + },
> + {
> + .procname = "dev",
> + .mode = 0555,
> + .child = dev_table,
> + },
> + { }
> +};
>
> -#if defined(CONFIG_SYSCTL)
> -int proc_do_static_key(struct ctl_table *table, int write,
> - void __user *buffer, size_t *lenp,
> - loff_t *ppos)
> +int __init sysctl_init(void)
> {
> - struct static_key *key = (struct static_key *)table->data;
> - static DEFINE_MUTEX(static_key_mutex);
> - int val, ret;
> - struct ctl_table tmp = {
> - .data = &val,
> - .maxlen = sizeof(val),
> - .mode = table->mode,
> - .extra1 = SYSCTL_ZERO,
> - .extra2 = SYSCTL_ONE,
> - };
> -
> - if (write && !capable(CAP_SYS_ADMIN))
> - return -EPERM;
> + struct ctl_table_header *hdr;
>
> - mutex_lock(&static_key_mutex);
> - val = static_key_enabled(key);
> - ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos);
> - if (write && !ret) {
> - if (val)
> - static_key_enable(key);
> - else
> - static_key_disable(key);
> - }
> - mutex_unlock(&static_key_mutex);
> - return ret;
> + hdr = register_sysctl_table(sysctl_base_table);
> + kmemleak_not_leak(hdr);
> + return 0;
> }
> -#endif
> +#endif /* CONFIG_SYSCTL */
> /*
> * No sense putting this after each symbol definition, twice,
> * exception granted :-)
> --
> 2.26.1
>
--
Kees Cook
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 5/5] sysctl: pass kernel pointers to ->proc_handler
[not found] ` <20200424064338.538313-6-hch@lst.de>
2020-04-24 19:06 ` [PATCH 5/5] sysctl: pass kernel pointers to ->proc_handler Andrey Ignatov
@ 2020-05-04 19:01 ` Kees Cook
2020-05-05 5:57 ` Christoph Hellwig
1 sibling, 1 reply; 21+ messages in thread
From: Kees Cook @ 2020-05-04 19:01 UTC (permalink / raw)
To: Christoph Hellwig
Cc: Iurii Zaikin, Alexei Starovoitov, Daniel Borkmann, linux-kernel,
linux-mm, linux-fsdevel, netdev, bpf, Andrey Ignatov
On Fri, Apr 24, 2020 at 08:43:38AM +0200, Christoph Hellwig wrote:
> Instead of having all the sysctl handlers deal with user pointers, which
> is rather hairy in terms of the BPF interaction, copy the input to and
> from userspace in common code. This also means that the strings are
> always NUL-terminated by the common code, making the API a little bit
> safer.
>
> As most handler just pass through the data to one of the common handlers
> a lot of the changes are mechnical.
This is a lovely cleanup; thank you!
Tiny notes below...
> diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
> index b6f5d459b087d..df2143e05c571 100644
> --- a/fs/proc/proc_sysctl.c
> +++ b/fs/proc/proc_sysctl.c
> @@ -539,13 +539,13 @@ static struct dentry *proc_sys_lookup(struct inode *dir, struct dentry *dentry,
> return err;
> }
>
> -static ssize_t proc_sys_call_handler(struct file *filp, void __user *buf,
> +static ssize_t proc_sys_call_handler(struct file *filp, void __user *ubuf,
> size_t count, loff_t *ppos, int write)
> {
> struct inode *inode = file_inode(filp);
> struct ctl_table_header *head = grab_header(inode);
> struct ctl_table *table = PROC_I(inode)->sysctl_entry;
> - void *new_buf = NULL;
> + void *kbuf;
> ssize_t error;
>
> if (IS_ERR(head))
> @@ -564,27 +564,38 @@ static ssize_t proc_sys_call_handler(struct file *filp, void __user *buf,
> if (!table->proc_handler)
> goto out;
>
> - error = BPF_CGROUP_RUN_PROG_SYSCTL(head, table, write, buf, &count,
> - ppos, &new_buf);
> + if (write) {
> + kbuf = memdup_user_nul(ubuf, count);
> + if (IS_ERR(kbuf)) {
> + error = PTR_ERR(kbuf);
> + goto out;
> + }
> + } else {
> + error = -ENOMEM;
> + kbuf = kzalloc(count, GFP_KERNEL);
> + if (!kbuf)
> + goto out;
> + }
> +
> + error = BPF_CGROUP_RUN_PROG_SYSCTL(head, table, write, &kbuf, &count,
> + ppos);
> if (error)
> - goto out;
> + goto out_free_buf;
>
> /* careful: calling conventions are nasty here */
Is this comment still valid after doing these cleanups?
> - if (new_buf) {
> - mm_segment_t old_fs;
> -
> - old_fs = get_fs();
> - set_fs(KERNEL_DS);
> - error = table->proc_handler(table, write, (void __user *)new_buf,
> - &count, ppos);
> - set_fs(old_fs);
> - kfree(new_buf);
> - } else {
> - error = table->proc_handler(table, write, buf, &count, ppos);
> + error = table->proc_handler(table, write, kbuf, &count, ppos);
> + if (error)
> + goto out_free_buf;
> +
> + if (!write) {
> + error = -EFAULT;
> + if (copy_to_user(ubuf, kbuf, count))
> + goto out_free_buf;
> }
Something I noticed here that existed in the original code, but might be
nice to improve while we're here is to make sure that the "count"
returned from proc_handler() cannot grow _larger_, since then we might
expose heap memory beyond the end of the allocation.
I'll send a patch for this...
>
> - if (!error)
> - error = count;
> + error = count;
> +out_free_buf:
> + kfree(kbuf);
> out:
> sysctl_head_finish(head);
>
> [...]
> diff --git a/kernel/sysctl.c b/kernel/sysctl.c
> index 511543d238794..e26fe7e8e19d7 100644
> --- a/kernel/sysctl.c
> +++ b/kernel/sysctl.c
> [...]
> @@ -682,7 +661,6 @@ static int do_proc_douintvec_w(unsigned int *tbl_data,
> left -= proc_skip_spaces(&p);
>
> out_free:
> - kfree(kbuf);
> if (err)
> return -EINVAL;
This label name isn't accurate any more... *shrug*
--
Kees Cook
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 5/5] sysctl: pass kernel pointers to ->proc_handler
2020-05-04 19:01 ` Kees Cook
@ 2020-05-05 5:57 ` Christoph Hellwig
0 siblings, 0 replies; 21+ messages in thread
From: Christoph Hellwig @ 2020-05-05 5:57 UTC (permalink / raw)
To: Kees Cook
Cc: Christoph Hellwig, Iurii Zaikin, Alexei Starovoitov,
Daniel Borkmann, linux-kernel, linux-mm, linux-fsdevel, netdev,
bpf, Andrey Ignatov
On Mon, May 04, 2020 at 12:01:11PM -0700, Kees Cook wrote:
> > if (error)
> > - goto out;
> > + goto out_free_buf;
> >
> > /* careful: calling conventions are nasty here */
>
> Is this comment still valid after doing these cleanups?
The comment is pretty old so I decided to keep it. That being said
I'm not sure it really is very helpful.
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 1/5] bpf-cgroup: remove unused exports
2020-04-21 17:15 ` [PATCH 1/5] bpf-cgroup: remove unused exports Christoph Hellwig
@ 2020-04-22 23:39 ` Andrey Ignatov
0 siblings, 0 replies; 21+ messages in thread
From: Andrey Ignatov @ 2020-04-22 23:39 UTC (permalink / raw)
To: Christoph Hellwig
Cc: Kees Cook, Iurii Zaikin, Alexei Starovoitov, Daniel Borkmann,
linux-kernel, linux-mm, linux-fsdevel, netdev, bpf
Christoph Hellwig <hch@lst.de> [Tue, 2020-04-21 10:17 -0700]:
> Except for a few of the networking hooks called from modular ipv4 or
> ipv6 code, all of hooks are just called from guaranteed to be built-in
> code.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
I checked it as well it see same thing:
- __cgroup_bpf_check_dev_permission is called in
security/device_cgroup.c under CONFIG_CGROUP_DEVICE;
- __cgroup_bpf_run_filter_sysctl is called in fs/proc/proc_sysctl.c
under CONFIG_PROC_SYSCTL;
- __cgroup_bpf_run_filter_[gs]etsockopt is called in net/socket.c under
CONFIG_NET;
All three configs are bool-s so LGTM.
Acked-by: Andrey Ignatov <rdna@fb.com>
--
Andrey Ignatov
^ permalink raw reply [flat|nested] 21+ messages in thread
* [PATCH 1/5] bpf-cgroup: remove unused exports
2020-04-21 17:15 pass kernel pointers to the sysctl ->proc_handler method v2 Christoph Hellwig
@ 2020-04-21 17:15 ` Christoph Hellwig
2020-04-22 23:39 ` Andrey Ignatov
0 siblings, 1 reply; 21+ messages in thread
From: Christoph Hellwig @ 2020-04-21 17:15 UTC (permalink / raw)
To: Kees Cook, Iurii Zaikin
Cc: Alexei Starovoitov, Daniel Borkmann, linux-kernel, linux-mm,
linux-fsdevel, netdev, bpf
Except for a few of the networking hooks called from modular ipv4 or
ipv6 code, all of hooks are just called from guaranteed to be built-in
code.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
kernel/bpf/cgroup.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/kernel/bpf/cgroup.c b/kernel/bpf/cgroup.c
index cb305e71e7de..929d9a7263da 100644
--- a/kernel/bpf/cgroup.c
+++ b/kernel/bpf/cgroup.c
@@ -1054,7 +1054,6 @@ int __cgroup_bpf_check_dev_permission(short dev_type, u32 major, u32 minor,
return !allow;
}
-EXPORT_SYMBOL(__cgroup_bpf_check_dev_permission);
static const struct bpf_func_proto *
cgroup_base_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
@@ -1221,7 +1220,6 @@ int __cgroup_bpf_run_filter_sysctl(struct ctl_table_header *head,
return ret == 1 ? 0 : -EPERM;
}
-EXPORT_SYMBOL(__cgroup_bpf_run_filter_sysctl);
#ifdef CONFIG_NET
static bool __cgroup_bpf_prog_array_is_empty(struct cgroup *cgrp,
@@ -1326,7 +1324,6 @@ int __cgroup_bpf_run_filter_setsockopt(struct sock *sk, int *level,
sockopt_free_buf(&ctx);
return ret;
}
-EXPORT_SYMBOL(__cgroup_bpf_run_filter_setsockopt);
int __cgroup_bpf_run_filter_getsockopt(struct sock *sk, int level,
int optname, char __user *optval,
@@ -1413,7 +1410,6 @@ int __cgroup_bpf_run_filter_getsockopt(struct sock *sk, int level,
sockopt_free_buf(&ctx);
return ret;
}
-EXPORT_SYMBOL(__cgroup_bpf_run_filter_getsockopt);
#endif
static ssize_t sysctl_cpy_dir(const struct ctl_dir *dir, char **bufp,
--
2.26.1
^ permalink raw reply related [flat|nested] 21+ messages in thread
end of thread, other threads:[~2020-05-05 5:57 UTC | newest]
Thread overview: 21+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-04-24 6:43 pass kernel pointers to the sysctl ->proc_handler method v3 Christoph Hellwig
2020-04-24 6:43 ` [PATCH 1/5] bpf-cgroup: remove unused exports Christoph Hellwig
2020-04-27 21:23 ` Daniel Borkmann
2020-04-24 6:43 ` [PATCH 2/5] mm: remove watermark_boost_factor_sysctl_handler Christoph Hellwig
2020-05-04 18:41 ` Kees Cook
2020-04-24 6:43 ` [PATCH 3/5] sysctl: remove all extern declaration from sysctl.c Christoph Hellwig
2020-05-04 1:25 ` Stephen Rothwell
2020-05-04 18:42 ` Kees Cook
2020-04-24 6:43 ` [PATCH 4/5] sysctl: avoid forward declarations Christoph Hellwig
2020-05-04 18:44 ` Kees Cook
2020-04-26 15:51 ` pass kernel pointers to the sysctl ->proc_handler method v3 Alexei Starovoitov
2020-04-27 5:35 ` Christoph Hellwig
2020-04-26 15:59 ` Al Viro
2020-04-27 5:36 ` Christoph Hellwig
2020-04-27 7:15 ` Al Viro
[not found] ` <20200424064338.538313-6-hch@lst.de>
2020-04-24 19:06 ` [PATCH 5/5] sysctl: pass kernel pointers to ->proc_handler Andrey Ignatov
2020-04-27 5:34 ` Christoph Hellwig
2020-05-04 19:01 ` Kees Cook
2020-05-05 5:57 ` Christoph Hellwig
-- strict thread matches above, loose matches on Subject: below --
2020-04-21 17:15 pass kernel pointers to the sysctl ->proc_handler method v2 Christoph Hellwig
2020-04-21 17:15 ` [PATCH 1/5] bpf-cgroup: remove unused exports Christoph Hellwig
2020-04-22 23:39 ` Andrey Ignatov
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