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-rw-r--r--kernel/memremap.c57
-rw-r--r--kernel/pid_namespace.c3
-rw-r--r--kernel/resource.c49
-rw-r--r--kernel/sysctl.c197
-rw-r--r--kernel/ucount.c6
5 files changed, 155 insertions, 157 deletions
diff --git a/kernel/memremap.c b/kernel/memremap.c
index bea6f887adad..6ee03a816d67 100644
--- a/kernel/memremap.c
+++ b/kernel/memremap.c
@@ -54,7 +54,7 @@ static void pgmap_array_delete(struct resource *res)
static unsigned long pfn_first(struct dev_pagemap *pgmap)
{
- return (pgmap->res.start >> PAGE_SHIFT) +
+ return PHYS_PFN(pgmap->res.start) +
vmem_altmap_offset(pgmap_altmap(pgmap));
}
@@ -98,7 +98,6 @@ static void devm_memremap_pages_release(void *data)
struct dev_pagemap *pgmap = data;
struct device *dev = pgmap->dev;
struct resource *res = &pgmap->res;
- resource_size_t align_start, align_size;
unsigned long pfn;
int nid;
@@ -108,25 +107,21 @@ static void devm_memremap_pages_release(void *data)
dev_pagemap_cleanup(pgmap);
/* pages are dead and unused, undo the arch mapping */
- align_start = res->start & ~(SECTION_SIZE - 1);
- align_size = ALIGN(res->start + resource_size(res), SECTION_SIZE)
- - align_start;
-
- nid = page_to_nid(pfn_to_page(align_start >> PAGE_SHIFT));
+ nid = page_to_nid(pfn_to_page(PHYS_PFN(res->start)));
mem_hotplug_begin();
if (pgmap->type == MEMORY_DEVICE_PRIVATE) {
- pfn = align_start >> PAGE_SHIFT;
+ pfn = PHYS_PFN(res->start);
__remove_pages(page_zone(pfn_to_page(pfn)), pfn,
- align_size >> PAGE_SHIFT, NULL);
+ PHYS_PFN(resource_size(res)), NULL);
} else {
- arch_remove_memory(nid, align_start, align_size,
+ arch_remove_memory(nid, res->start, resource_size(res),
pgmap_altmap(pgmap));
- kasan_remove_zero_shadow(__va(align_start), align_size);
+ kasan_remove_zero_shadow(__va(res->start), resource_size(res));
}
mem_hotplug_done();
- untrack_pfn(NULL, PHYS_PFN(align_start), align_size);
+ untrack_pfn(NULL, PHYS_PFN(res->start), resource_size(res));
pgmap_array_delete(res);
dev_WARN_ONCE(dev, pgmap->altmap.alloc,
"%s: failed to free all reserved pages\n", __func__);
@@ -162,13 +157,12 @@ static void dev_pagemap_percpu_release(struct percpu_ref *ref)
*/
void *devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap)
{
- resource_size_t align_start, align_size, align_end;
struct resource *res = &pgmap->res;
struct dev_pagemap *conflict_pgmap;
struct mhp_restrictions restrictions = {
/*
* We do not want any optional features only our own memmap
- */
+ */
.altmap = pgmap_altmap(pgmap),
};
pgprot_t pgprot = PAGE_KERNEL;
@@ -225,12 +219,7 @@ void *devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap)
return ERR_PTR(error);
}
- align_start = res->start & ~(SECTION_SIZE - 1);
- align_size = ALIGN(res->start + resource_size(res), SECTION_SIZE)
- - align_start;
- align_end = align_start + align_size - 1;
-
- conflict_pgmap = get_dev_pagemap(PHYS_PFN(align_start), NULL);
+ conflict_pgmap = get_dev_pagemap(PHYS_PFN(res->start), NULL);
if (conflict_pgmap) {
dev_WARN(dev, "Conflicting mapping in same section\n");
put_dev_pagemap(conflict_pgmap);
@@ -238,7 +227,7 @@ void *devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap)
goto err_array;
}
- conflict_pgmap = get_dev_pagemap(PHYS_PFN(align_end), NULL);
+ conflict_pgmap = get_dev_pagemap(PHYS_PFN(res->end), NULL);
if (conflict_pgmap) {
dev_WARN(dev, "Conflicting mapping in same section\n");
put_dev_pagemap(conflict_pgmap);
@@ -246,7 +235,7 @@ void *devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap)
goto err_array;
}
- is_ram = region_intersects(align_start, align_size,
+ is_ram = region_intersects(res->start, resource_size(res),
IORESOURCE_SYSTEM_RAM, IORES_DESC_NONE);
if (is_ram != REGION_DISJOINT) {
@@ -267,8 +256,8 @@ void *devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap)
if (nid < 0)
nid = numa_mem_id();
- error = track_pfn_remap(NULL, &pgprot, PHYS_PFN(align_start), 0,
- align_size);
+ error = track_pfn_remap(NULL, &pgprot, PHYS_PFN(res->start), 0,
+ resource_size(res));
if (error)
goto err_pfn_remap;
@@ -286,16 +275,16 @@ void *devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap)
* arch_add_memory().
*/
if (pgmap->type == MEMORY_DEVICE_PRIVATE) {
- error = add_pages(nid, align_start >> PAGE_SHIFT,
- align_size >> PAGE_SHIFT, &restrictions);
+ error = add_pages(nid, PHYS_PFN(res->start),
+ PHYS_PFN(resource_size(res)), &restrictions);
} else {
- error = kasan_add_zero_shadow(__va(align_start), align_size);
+ error = kasan_add_zero_shadow(__va(res->start), resource_size(res));
if (error) {
mem_hotplug_done();
goto err_kasan;
}
- error = arch_add_memory(nid, align_start, align_size,
+ error = arch_add_memory(nid, res->start, resource_size(res),
&restrictions);
}
@@ -303,8 +292,8 @@ void *devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap)
struct zone *zone;
zone = &NODE_DATA(nid)->node_zones[ZONE_DEVICE];
- move_pfn_range_to_zone(zone, align_start >> PAGE_SHIFT,
- align_size >> PAGE_SHIFT, pgmap_altmap(pgmap));
+ move_pfn_range_to_zone(zone, PHYS_PFN(res->start),
+ PHYS_PFN(resource_size(res)), restrictions.altmap);
}
mem_hotplug_done();
@@ -316,8 +305,8 @@ void *devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap)
* to allow us to do the work while not holding the hotplug lock.
*/
memmap_init_zone_device(&NODE_DATA(nid)->node_zones[ZONE_DEVICE],
- align_start >> PAGE_SHIFT,
- align_size >> PAGE_SHIFT, pgmap);
+ PHYS_PFN(res->start),
+ PHYS_PFN(resource_size(res)), pgmap);
percpu_ref_get_many(pgmap->ref, pfn_end(pgmap) - pfn_first(pgmap));
error = devm_add_action_or_reset(dev, devm_memremap_pages_release,
@@ -328,9 +317,9 @@ void *devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap)
return __va(res->start);
err_add_memory:
- kasan_remove_zero_shadow(__va(align_start), align_size);
+ kasan_remove_zero_shadow(__va(res->start), resource_size(res));
err_kasan:
- untrack_pfn(NULL, PHYS_PFN(align_start), align_size);
+ untrack_pfn(NULL, PHYS_PFN(res->start), resource_size(res));
err_pfn_remap:
pgmap_array_delete(res);
err_array:
diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c
index 6d726cef241c..a6a79f85c81a 100644
--- a/kernel/pid_namespace.c
+++ b/kernel/pid_namespace.c
@@ -291,14 +291,13 @@ static int pid_ns_ctl_handler(struct ctl_table *table, int write,
}
extern int pid_max;
-static int zero = 0;
static struct ctl_table pid_ns_ctl_table[] = {
{
.procname = "ns_last_pid",
.maxlen = sizeof(int),
.mode = 0666, /* permissions are checked in the handler */
.proc_handler = pid_ns_ctl_handler,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
.extra2 = &pid_max,
},
{ }
diff --git a/kernel/resource.c b/kernel/resource.c
index d22423e85cf8..7ea4306503c5 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -326,7 +326,7 @@ EXPORT_SYMBOL(release_resource);
*
* If a resource is found, returns 0 and @*res is overwritten with the part
* of the resource that's within [@start..@end]; if none is found, returns
- * -1 or -EINVAL for other invalid parameters.
+ * -ENODEV. Returns -EINVAL for invalid parameters.
*
* This function walks the whole tree and not just first level children
* unless @first_lvl is true.
@@ -342,6 +342,7 @@ static int find_next_iomem_res(resource_size_t start, resource_size_t end,
unsigned long flags, unsigned long desc,
bool first_lvl, struct resource *res)
{
+ bool siblings_only = true;
struct resource *p;
if (!res)
@@ -352,29 +353,43 @@ static int find_next_iomem_res(resource_size_t start, resource_size_t end,
read_lock(&resource_lock);
- for (p = iomem_resource.child; p; p = next_resource(p, first_lvl)) {
- if ((p->flags & flags) != flags)
- continue;
- if ((desc != IORES_DESC_NONE) && (desc != p->desc))
- continue;
+ for (p = iomem_resource.child; p; p = next_resource(p, siblings_only)) {
+ /* If we passed the resource we are looking for, stop */
if (p->start > end) {
p = NULL;
break;
}
- if ((p->end >= start) && (p->start <= end))
- break;
+
+ /* Skip until we find a range that matches what we look for */
+ if (p->end < start)
+ continue;
+
+ /*
+ * Now that we found a range that matches what we look for,
+ * check the flags and the descriptor. If we were not asked to
+ * use only the first level, start looking at children as well.
+ */
+ siblings_only = first_lvl;
+
+ if ((p->flags & flags) != flags)
+ continue;
+ if ((desc != IORES_DESC_NONE) && (desc != p->desc))
+ continue;
+
+ /* Found a match, break */
+ break;
+ }
+
+ if (p) {
+ /* copy data */
+ res->start = max(start, p->start);
+ res->end = min(end, p->end);
+ res->flags = p->flags;
+ res->desc = p->desc;
}
read_unlock(&resource_lock);
- if (!p)
- return -1;
-
- /* copy data */
- res->start = max(start, p->start);
- res->end = min(end, p->end);
- res->flags = p->flags;
- res->desc = p->desc;
- return 0;
+ return p ? 0 : -ENODEV;
}
static int __walk_iomem_res_desc(resource_size_t start, resource_size_t end,
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 43186ccfa139..078950d9605b 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -125,9 +125,6 @@ static int sixty = 60;
#endif
static int __maybe_unused neg_one = -1;
-
-static int zero;
-static int __maybe_unused one = 1;
static int __maybe_unused two = 2;
static int __maybe_unused four = 4;
static unsigned long zero_ul;
@@ -385,8 +382,8 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = sysctl_schedstats,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
#endif /* CONFIG_SCHEDSTATS */
#endif /* CONFIG_SMP */
@@ -418,7 +415,7 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &one,
+ .extra1 = SYSCTL_ONE,
},
{
.procname = "numa_balancing",
@@ -426,8 +423,8 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = sysctl_numa_balancing,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
#endif /* CONFIG_NUMA_BALANCING */
#endif /* CONFIG_SCHED_DEBUG */
@@ -475,8 +472,8 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
#endif
#ifdef CONFIG_CFS_BANDWIDTH
@@ -486,7 +483,7 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &one,
+ .extra1 = SYSCTL_ONE,
},
#endif
#if defined(CONFIG_ENERGY_MODEL) && defined(CONFIG_CPU_FREQ_GOV_SCHEDUTIL)
@@ -496,8 +493,8 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = sched_energy_aware_handler,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
#endif
#ifdef CONFIG_PROVE_LOCKING
@@ -562,7 +559,7 @@ static struct ctl_table kern_table[] = {
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &neg_one,
- .extra2 = &one,
+ .extra2 = SYSCTL_ONE,
},
#endif
#ifdef CONFIG_LATENCYTOP
@@ -696,8 +693,8 @@ static struct ctl_table kern_table[] = {
.mode = 0644,
/* only handle a transition from default "0" to "1" */
.proc_handler = proc_dointvec_minmax,
- .extra1 = &one,
- .extra2 = &one,
+ .extra1 = SYSCTL_ONE,
+ .extra2 = SYSCTL_ONE,
},
#endif
#ifdef CONFIG_MODULES
@@ -715,8 +712,8 @@ static struct ctl_table kern_table[] = {
.mode = 0644,
/* only handle a transition from default "0" to "1" */
.proc_handler = proc_dointvec_minmax,
- .extra1 = &one,
- .extra2 = &one,
+ .extra1 = SYSCTL_ONE,
+ .extra2 = SYSCTL_ONE,
},
#endif
#ifdef CONFIG_UEVENT_HELPER
@@ -875,7 +872,7 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
.extra2 = &ten_thousand,
},
{
@@ -891,8 +888,8 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax_sysadmin,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
{
.procname = "kptr_restrict",
@@ -900,7 +897,7 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax_sysadmin,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
.extra2 = &two,
},
#endif
@@ -925,8 +922,8 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_watchdog,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
{
.procname = "watchdog_thresh",
@@ -934,7 +931,7 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_watchdog_thresh,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
.extra2 = &sixty,
},
{
@@ -943,8 +940,8 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(int),
.mode = NMI_WATCHDOG_SYSCTL_PERM,
.proc_handler = proc_nmi_watchdog,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
{
.procname = "watchdog_cpumask",
@@ -960,8 +957,8 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_soft_watchdog,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
{
.procname = "softlockup_panic",
@@ -969,8 +966,8 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
#ifdef CONFIG_SMP
{
@@ -979,8 +976,8 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
#endif /* CONFIG_SMP */
#endif
@@ -991,8 +988,8 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
#ifdef CONFIG_SMP
{
@@ -1001,8 +998,8 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
#endif /* CONFIG_SMP */
#endif
@@ -1115,8 +1112,8 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
{
.procname = "hung_task_check_count",
@@ -1124,7 +1121,7 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
},
{
.procname = "hung_task_timeout_secs",
@@ -1201,7 +1198,7 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(sysctl_perf_event_sample_rate),
.mode = 0644,
.proc_handler = perf_proc_update_handler,
- .extra1 = &one,
+ .extra1 = SYSCTL_ONE,
},
{
.procname = "perf_cpu_time_max_percent",
@@ -1209,7 +1206,7 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(sysctl_perf_cpu_time_max_percent),
.mode = 0644,
.proc_handler = perf_cpu_time_max_percent_handler,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
.extra2 = &one_hundred,
},
{
@@ -1218,7 +1215,7 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(sysctl_perf_event_max_stack),
.mode = 0644,
.proc_handler = perf_event_max_stack_handler,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
.extra2 = &six_hundred_forty_kb,
},
{
@@ -1227,7 +1224,7 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(sysctl_perf_event_max_contexts_per_stack),
.mode = 0644,
.proc_handler = perf_event_max_stack_handler,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
.extra2 = &one_thousand,
},
#endif
@@ -1237,8 +1234,8 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
#if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ_COMMON)
{
@@ -1247,8 +1244,8 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = timer_migration_handler,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
#endif
#ifdef CONFIG_BPF_SYSCALL
@@ -1259,8 +1256,8 @@ static struct ctl_table kern_table[] = {
.mode = 0644,
/* only handle a transition from default "0" to "1" */
.proc_handler = proc_dointvec_minmax,
- .extra1 = &one,
- .extra2 = &one,
+ .extra1 = SYSCTL_ONE,
+ .extra2 = SYSCTL_ONE,
},
{
.procname = "bpf_stats_enabled",
@@ -1277,8 +1274,8 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(sysctl_panic_on_rcu_stall),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
#endif
#ifdef CONFIG_STACKLEAK_RUNTIME_DISABLE
@@ -1288,8 +1285,8 @@ static struct ctl_table kern_table[] = {
.maxlen = sizeof(int),
.mode = 0600,
.proc_handler = stack_erasing_sysctl,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
#endif
{ }
@@ -1302,7 +1299,7 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(sysctl_overcommit_memory),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
.extra2 = &two,
},
{
@@ -1311,7 +1308,7 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(sysctl_panic_on_oom),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
.extra2 = &two,
},
{
@@ -1348,7 +1345,7 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
},
{
.procname = "dirty_background_ratio",
@@ -1356,7 +1353,7 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(dirty_background_ratio),
.mode = 0644,
.proc_handler = dirty_background_ratio_handler,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
.extra2 = &one_hundred,
},
{
@@ -1373,7 +1370,7 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(vm_dirty_ratio),
.mode = 0644,
.proc_handler = dirty_ratio_handler,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
.extra2 = &one_hundred,
},
{
@@ -1397,7 +1394,7 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(dirty_expire_interval),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
},
{
.procname = "dirtytime_expire_seconds",
@@ -1405,7 +1402,7 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(dirtytime_expire_interval),
.mode = 0644,
.proc_handler = dirtytime_interval_handler,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
},
{
.procname = "swappiness",
@@ -1413,7 +1410,7 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(vm_swappiness),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
.extra2 = &one_hundred,
},
#ifdef CONFIG_HUGETLB_PAGE
@@ -1438,8 +1435,8 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = sysctl_vm_numa_stat_handler,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
#endif
{
@@ -1470,7 +1467,7 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = drop_caches_sysctl_handler,
- .extra1 = &one,
+ .extra1 = SYSCTL_ONE,
.extra2 = &four,
},
#ifdef CONFIG_COMPACTION
@@ -1496,8 +1493,8 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
#endif /* CONFIG_COMPACTION */
@@ -1507,7 +1504,7 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(min_free_kbytes),
.mode = 0644,
.proc_handler = min_free_kbytes_sysctl_handler,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
},
{
.procname = "watermark_boost_factor",
@@ -1515,7 +1512,7 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(watermark_boost_factor),
.mode = 0644,
.proc_handler = watermark_boost_factor_sysctl_handler,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
},
{
.procname = "watermark_scale_factor",
@@ -1523,7 +1520,7 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(watermark_scale_factor),
.mode = 0644,
.proc_handler = watermark_scale_factor_sysctl_handler,
- .extra1 = &one,
+ .extra1 = SYSCTL_ONE,
.extra2 = &one_thousand,
},
{
@@ -1532,7 +1529,7 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(percpu_pagelist_fraction),
.mode = 0644,
.proc_handler = percpu_pagelist_fraction_sysctl_handler,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
},
#ifdef CONFIG_MMU
{
@@ -1541,7 +1538,7 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(sysctl_max_map_count),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
},
#else
{
@@ -1550,7 +1547,7 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(sysctl_nr_trim_pages),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
},
#endif
{
@@ -1566,7 +1563,7 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(block_dump),
.mode = 0644,
.proc_handler = proc_dointvec,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
},
{
.procname = "vfs_cache_pressure",
@@ -1574,7 +1571,7 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(sysctl_vfs_cache_pressure),
.mode = 0644,
.proc_handler = proc_dointvec,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
},
#ifdef HAVE_ARCH_PICK_MMAP_LAYOUT
{
@@ -1583,7 +1580,7 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(sysctl_legacy_va_layout),
.mode = 0644,
.proc_handler = proc_dointvec,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
},
#endif
#ifdef CONFIG_NUMA
@@ -1593,7 +1590,7 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(node_reclaim_mode),
.mode = 0644,
.proc_handler = proc_dointvec,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
},
{
.procname = "min_unmapped_ratio",
@@ -1601,7 +1598,7 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(sysctl_min_unmapped_ratio),
.mode = 0644,
.proc_handler = sysctl_min_unmapped_ratio_sysctl_handler,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
.extra2 = &one_hundred,
},
{
@@ -1610,7 +1607,7 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(sysctl_min_slab_ratio),
.mode = 0644,
.proc_handler = sysctl_min_slab_ratio_sysctl_handler,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
.extra2 = &one_hundred,
},
#endif
@@ -1661,7 +1658,7 @@ static struct ctl_table vm_table[] = {
#endif
.mode = 0644,
.proc_handler = proc_dointvec,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
},
#endif
#ifdef CONFIG_HIGHMEM
@@ -1671,8 +1668,8 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(vm_highmem_is_dirtyable),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
#endif
#ifdef CONFIG_MEMORY_FAILURE
@@ -1682,8 +1679,8 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(sysctl_memory_failure_early_kill),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
{
.procname = "memory_failure_recovery",
@@ -1691,8 +1688,8 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(sysctl_memory_failure_recovery),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
#endif
{
@@ -1738,8 +1735,8 @@ static struct ctl_table vm_table[] = {
.maxlen = sizeof(sysctl_unprivileged_userfaultfd),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
#endif
{ }
@@ -1875,8 +1872,8 @@ static struct ctl_table fs_table[] = {
.maxlen = sizeof(int),
.mode = 0600,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
{
.procname = "protected_hardlinks",
@@ -1884,8 +1881,8 @@ static struct ctl_table fs_table[] = {
.maxlen = sizeof(int),
.mode = 0600,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
{
.procname = "protected_fifos",
@@ -1893,7 +1890,7 @@ static struct ctl_table fs_table[] = {
.maxlen = sizeof(int),
.mode = 0600,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
.extra2 = &two,
},
{
@@ -1902,7 +1899,7 @@ static struct ctl_table fs_table[] = {
.maxlen = sizeof(int),
.mode = 0600,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
.extra2 = &two,
},
{
@@ -1911,7 +1908,7 @@ static struct ctl_table fs_table[] = {
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax_coredump,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
.extra2 = &two,
},
#if defined(CONFIG_BINFMT_MISC) || defined(CONFIG_BINFMT_MISC_MODULE)
@@ -1948,7 +1945,7 @@ static struct ctl_table fs_table[] = {
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = &one,
+ .extra1 = SYSCTL_ONE,
},
{ }
};
@@ -1970,8 +1967,8 @@ static struct ctl_table debug_table[] = {
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_kprobes_optimization_handler,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
#endif
{ }
@@ -3395,8 +3392,8 @@ int proc_do_static_key(struct ctl_table *table, int write,
.data = &val,
.maxlen = sizeof(val),
.mode = table->mode,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
};
if (write && !capable(CAP_SYS_ADMIN))
diff --git a/kernel/ucount.c b/kernel/ucount.c
index feb128c7b5d9..a53cc2b4179c 100644
--- a/kernel/ucount.c
+++ b/kernel/ucount.c
@@ -52,16 +52,14 @@ static struct ctl_table_root set_root = {
.permissions = set_permissions,
};
-static int zero = 0;
-static int int_max = INT_MAX;
#define UCOUNT_ENTRY(name) \
{ \
.procname = name, \
.maxlen = sizeof(int), \
.mode = 0644, \
.proc_handler = proc_dointvec_minmax, \
- .extra1 = &zero, \
- .extra2 = &int_max, \
+ .extra1 = SYSCTL_ZERO, \
+ .extra2 = SYSCTL_INT_MAX, \
}
static struct ctl_table user_table[] = {
UCOUNT_ENTRY("max_user_namespaces"),
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-12 02:29:05 +0100