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-rw-r--r--drivers/base/Makefile2
-rw-r--r--drivers/base/arch_topology.c2
-rw-r--r--drivers/base/bus.c2
-rw-r--r--drivers/base/cacheinfo.c49
-rw-r--r--drivers/base/class.c2
-rw-r--r--drivers/base/core.c63
-rw-r--r--drivers/base/cpu.c84
-rw-r--r--drivers/base/dd.c8
-rw-r--r--drivers/base/devcon.c231
-rw-r--r--drivers/base/devcoredump.c2
-rw-r--r--drivers/base/devres.c105
-rw-r--r--drivers/base/firmware_loader/fallback.c4
-rw-r--r--drivers/base/memory.c62
-rw-r--r--drivers/base/node.c306
-rw-r--r--drivers/base/platform.c37
-rw-r--r--drivers/base/power/sysfs.c160
-rw-r--r--drivers/base/power/wakeup_stats.c17
-rw-r--r--drivers/base/property.c73
-rw-r--r--drivers/base/soc.c64
-rw-r--r--drivers/base/syscore.c8
-rw-r--r--drivers/base/topology.c10
21 files changed, 652 insertions, 639 deletions
diff --git a/drivers/base/Makefile b/drivers/base/Makefile
index 157452080f3d..41369fc7004f 100644
--- a/drivers/base/Makefile
+++ b/drivers/base/Makefile
@@ -6,7 +6,7 @@ obj-y := component.o core.o bus.o dd.o syscore.o \
cpu.o firmware.o init.o map.o devres.o \
attribute_container.o transport_class.o \
topology.o container.o property.o cacheinfo.o \
- devcon.o swnode.o
+ swnode.o
obj-$(CONFIG_DEVTMPFS) += devtmpfs.o
obj-y += power/
obj-$(CONFIG_ISA_BUS_API) += isa.o
diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c
index c1a9e2fb634e..de8587cc119e 100644
--- a/drivers/base/arch_topology.c
+++ b/drivers/base/arch_topology.c
@@ -80,7 +80,7 @@ static ssize_t cpu_capacity_show(struct device *dev,
{
struct cpu *cpu = container_of(dev, struct cpu, dev);
- return sprintf(buf, "%lu\n", topology_get_cpu_scale(cpu->dev.id));
+ return sysfs_emit(buf, "%lu\n", topology_get_cpu_scale(cpu->dev.id));
}
static void update_topology_flags_workfn(struct work_struct *work);
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 886e9054999a..a9c23ecebc7c 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -229,7 +229,7 @@ static DRIVER_ATTR_IGNORE_LOCKDEP(bind, S_IWUSR, NULL, bind_store);
static ssize_t drivers_autoprobe_show(struct bus_type *bus, char *buf)
{
- return sprintf(buf, "%d\n", bus->p->drivers_autoprobe);
+ return sysfs_emit(buf, "%d\n", bus->p->drivers_autoprobe);
}
static ssize_t drivers_autoprobe_store(struct bus_type *bus,
diff --git a/drivers/base/cacheinfo.c b/drivers/base/cacheinfo.c
index 8d553c92cd32..bfc095956dd1 100644
--- a/drivers/base/cacheinfo.c
+++ b/drivers/base/cacheinfo.c
@@ -362,7 +362,7 @@ static ssize_t file_name##_show(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
struct cacheinfo *this_leaf = dev_get_drvdata(dev); \
- return sprintf(buf, "%u\n", this_leaf->object); \
+ return sysfs_emit(buf, "%u\n", this_leaf->object); \
}
show_one(id, id);
@@ -377,44 +377,48 @@ static ssize_t size_show(struct device *dev,
{
struct cacheinfo *this_leaf = dev_get_drvdata(dev);
- return sprintf(buf, "%uK\n", this_leaf->size >> 10);
+ return sysfs_emit(buf, "%uK\n", this_leaf->size >> 10);
}
-static ssize_t shared_cpumap_show_func(struct device *dev, bool list, char *buf)
+static ssize_t shared_cpu_map_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
struct cacheinfo *this_leaf = dev_get_drvdata(dev);
const struct cpumask *mask = &this_leaf->shared_cpu_map;
- return cpumap_print_to_pagebuf(list, buf, mask);
-}
-
-static ssize_t shared_cpu_map_show(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- return shared_cpumap_show_func(dev, false, buf);
+ return sysfs_emit(buf, "%*pb\n", nr_cpu_ids, mask);
}
static ssize_t shared_cpu_list_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- return shared_cpumap_show_func(dev, true, buf);
+ struct cacheinfo *this_leaf = dev_get_drvdata(dev);
+ const struct cpumask *mask = &this_leaf->shared_cpu_map;
+
+ return sysfs_emit(buf, "%*pbl\n", nr_cpu_ids, mask);
}
static ssize_t type_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct cacheinfo *this_leaf = dev_get_drvdata(dev);
+ const char *output;
switch (this_leaf->type) {
case CACHE_TYPE_DATA:
- return sprintf(buf, "Data\n");
+ output = "Data";
+ break;
case CACHE_TYPE_INST:
- return sprintf(buf, "Instruction\n");
+ output = "Instruction";
+ break;
case CACHE_TYPE_UNIFIED:
- return sprintf(buf, "Unified\n");
+ output = "Unified";
+ break;
default:
return -EINVAL;
}
+
+ return sysfs_emit(buf, "%s\n", output);
}
static ssize_t allocation_policy_show(struct device *dev,
@@ -422,15 +426,18 @@ static ssize_t allocation_policy_show(struct device *dev,
{
struct cacheinfo *this_leaf = dev_get_drvdata(dev);
unsigned int ci_attr = this_leaf->attributes;
- int n = 0;
+ const char *output;
if ((ci_attr & CACHE_READ_ALLOCATE) && (ci_attr & CACHE_WRITE_ALLOCATE))
- n = sprintf(buf, "ReadWriteAllocate\n");
+ output = "ReadWriteAllocate";
else if (ci_attr & CACHE_READ_ALLOCATE)
- n = sprintf(buf, "ReadAllocate\n");
+ output = "ReadAllocate";
else if (ci_attr & CACHE_WRITE_ALLOCATE)
- n = sprintf(buf, "WriteAllocate\n");
- return n;
+ output = "WriteAllocate";
+ else
+ return 0;
+
+ return sysfs_emit(buf, "%s\n", output);
}
static ssize_t write_policy_show(struct device *dev,
@@ -441,9 +448,9 @@ static ssize_t write_policy_show(struct device *dev,
int n = 0;
if (ci_attr & CACHE_WRITE_THROUGH)
- n = sprintf(buf, "WriteThrough\n");
+ n = sysfs_emit(buf, "WriteThrough\n");
else if (ci_attr & CACHE_WRITE_BACK)
- n = sprintf(buf, "WriteBack\n");
+ n = sysfs_emit(buf, "WriteBack\n");
return n;
}
diff --git a/drivers/base/class.c b/drivers/base/class.c
index bcd410e6d70a..c3451481194e 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -478,7 +478,7 @@ ssize_t show_class_attr_string(struct class *class,
struct class_attribute_string *cs;
cs = container_of(attr, struct class_attribute_string, attr);
- return snprintf(buf, PAGE_SIZE, "%s\n", cs->str);
+ return sysfs_emit(buf, "%s\n", cs->str);
}
EXPORT_SYMBOL_GPL(show_class_attr_string);
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 0bad9e6066c3..3b9404921da9 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -26,6 +26,7 @@
#include <linux/pm_runtime.h>
#include <linux/netdevice.h>
#include <linux/sched/signal.h>
+#include <linux/sched/mm.h>
#include <linux/sysfs.h>
#include "base.h"
@@ -239,27 +240,35 @@ void device_pm_move_to_tail(struct device *dev)
#define to_devlink(dev) container_of((dev), struct device_link, link_dev)
static ssize_t status_show(struct device *dev,
- struct device_attribute *attr, char *buf)
+ struct device_attribute *attr, char *buf)
{
- char *status;
+ const char *output;
switch (to_devlink(dev)->status) {
case DL_STATE_NONE:
- status = "not tracked"; break;
+ output = "not tracked";
+ break;
case DL_STATE_DORMANT:
- status = "dormant"; break;
+ output = "dormant";
+ break;
case DL_STATE_AVAILABLE:
- status = "available"; break;
+ output = "available";
+ break;
case DL_STATE_CONSUMER_PROBE:
- status = "consumer probing"; break;
+ output = "consumer probing";
+ break;
case DL_STATE_ACTIVE:
- status = "active"; break;
+ output = "active";
+ break;
case DL_STATE_SUPPLIER_UNBIND:
- status = "supplier unbinding"; break;
+ output = "supplier unbinding";
+ break;
default:
- status = "unknown"; break;
+ output = "unknown";
+ break;
}
- return sprintf(buf, "%s\n", status);
+
+ return sysfs_emit(buf, "%s\n", output);
}
static DEVICE_ATTR_RO(status);
@@ -267,16 +276,16 @@ static ssize_t auto_remove_on_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct device_link *link = to_devlink(dev);
- char *str;
+ const char *output;
if (link->flags & DL_FLAG_AUTOREMOVE_SUPPLIER)
- str = "supplier unbind";
+ output = "supplier unbind";
else if (link->flags & DL_FLAG_AUTOREMOVE_CONSUMER)
- str = "consumer unbind";
+ output = "consumer unbind";
else
- str = "never";
+ output = "never";
- return sprintf(buf, "%s\n", str);
+ return sysfs_emit(buf, "%s\n", output);
}
static DEVICE_ATTR_RO(auto_remove_on);
@@ -285,7 +294,7 @@ static ssize_t runtime_pm_show(struct device *dev,
{
struct device_link *link = to_devlink(dev);
- return sprintf(buf, "%d\n", !!(link->flags & DL_FLAG_PM_RUNTIME));
+ return sysfs_emit(buf, "%d\n", !!(link->flags & DL_FLAG_PM_RUNTIME));
}
static DEVICE_ATTR_RO(runtime_pm);
@@ -294,7 +303,8 @@ static ssize_t sync_state_only_show(struct device *dev,
{
struct device_link *link = to_devlink(dev);
- return sprintf(buf, "%d\n", !!(link->flags & DL_FLAG_SYNC_STATE_ONLY));
+ return sysfs_emit(buf, "%d\n",
+ !!(link->flags & DL_FLAG_SYNC_STATE_ONLY));
}
static DEVICE_ATTR_RO(sync_state_only);
@@ -1059,7 +1069,7 @@ static ssize_t waiting_for_supplier_show(struct device *dev,
&& dev->links.need_for_probe;
mutex_unlock(&wfs_lock);
device_unlock(dev);
- return sprintf(buf, "%u\n", val);
+ return sysfs_emit(buf, "%u\n", val);
}
static DEVICE_ATTR_RO(waiting_for_supplier);
@@ -1709,7 +1719,7 @@ ssize_t device_show_ulong(struct device *dev,
char *buf)
{
struct dev_ext_attribute *ea = to_ext_attr(attr);
- return snprintf(buf, PAGE_SIZE, "%lx\n", *(unsigned long *)(ea->var));
+ return sysfs_emit(buf, "%lx\n", *(unsigned long *)(ea->var));
}
EXPORT_SYMBOL_GPL(device_show_ulong);
@@ -1739,7 +1749,7 @@ ssize_t device_show_int(struct device *dev,
{
struct dev_ext_attribute *ea = to_ext_attr(attr);
- return snprintf(buf, PAGE_SIZE, "%d\n", *(int *)(ea->var));
+ return sysfs_emit(buf, "%d\n", *(int *)(ea->var));
}
EXPORT_SYMBOL_GPL(device_show_int);
@@ -1760,7 +1770,7 @@ ssize_t device_show_bool(struct device *dev, struct device_attribute *attr,
{
struct dev_ext_attribute *ea = to_ext_attr(attr);
- return snprintf(buf, PAGE_SIZE, "%d\n", *(bool *)(ea->var));
+ return sysfs_emit(buf, "%d\n", *(bool *)(ea->var));
}
EXPORT_SYMBOL_GPL(device_show_bool);
@@ -1932,7 +1942,7 @@ static ssize_t uevent_show(struct device *dev, struct device_attribute *attr,
struct kset *kset;
struct kobj_uevent_env *env = NULL;
int i;
- size_t count = 0;
+ int len = 0;
int retval;
/* search the kset, the device belongs to */
@@ -1962,10 +1972,10 @@ static ssize_t uevent_show(struct device *dev, struct device_attribute *attr,
/* copy keys to file */
for (i = 0; i < env->envp_idx; i++)
- count += sprintf(&buf[count], "%s\n", env->envp[i]);
+ len += sysfs_emit_at(buf, len, "%s\n", env->envp[i]);
out:
kfree(env);
- return count;
+ return len;
}
static ssize_t uevent_store(struct device *dev, struct device_attribute *attr,
@@ -1992,7 +2002,7 @@ static ssize_t online_show(struct device *dev, struct device_attribute *attr,
device_lock(dev);
val = !dev->offline;
device_unlock(dev);
- return sprintf(buf, "%u\n", val);
+ return sysfs_emit(buf, "%u\n", val);
}
static ssize_t online_store(struct device *dev, struct device_attribute *attr,
@@ -3062,6 +3072,7 @@ void device_del(struct device *dev)
struct device *parent = dev->parent;
struct kobject *glue_dir = NULL;
struct class_interface *class_intf;
+ unsigned int noio_flag;
device_lock(dev);
kill_device(dev);
@@ -3073,6 +3084,7 @@ void device_del(struct device *dev)
/* Notify clients of device removal. This call must come
* before dpm_sysfs_remove().
*/
+ noio_flag = memalloc_noio_save();
if (dev->bus)
blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
BUS_NOTIFY_DEL_DEVICE, dev);
@@ -3114,6 +3126,7 @@ void device_del(struct device *dev)
glue_dir = get_glue_dir(dev);
kobject_del(&dev->kobj);
cleanup_glue_dir(dev, glue_dir);
+ memalloc_noio_restore(noio_flag);
put_device(parent);
}
EXPORT_SYMBOL_GPL(device_del);
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index d2136ab9b14a..8f1d6569564c 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -139,11 +139,11 @@ EXPORT_SYMBOL_GPL(cpu_subsys);
#ifdef CONFIG_KEXEC
#include <linux/kexec.h>
-static ssize_t show_crash_notes(struct device *dev, struct device_attribute *attr,
+static ssize_t crash_notes_show(struct device *dev,
+ struct device_attribute *attr,
char *buf)
{
struct cpu *cpu = container_of(dev, struct cpu, dev);
- ssize_t rc;
unsigned long long addr;
int cpunum;
@@ -156,21 +156,18 @@ static ssize_t show_crash_notes(struct device *dev, struct device_attribute *att
* operation should be safe. No locking required.
*/
addr = per_cpu_ptr_to_phys(per_cpu_ptr(crash_notes, cpunum));
- rc = sprintf(buf, "%Lx\n", addr);
- return rc;
+
+ return sysfs_emit(buf, "%llx\n", addr);
}
-static DEVICE_ATTR(crash_notes, 0400, show_crash_notes, NULL);
+static DEVICE_ATTR_ADMIN_RO(crash_notes);
-static ssize_t show_crash_notes_size(struct device *dev,
+static ssize_t crash_notes_size_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- ssize_t rc;
-
- rc = sprintf(buf, "%zu\n", sizeof(note_buf_t));
- return rc;
+ return sysfs_emit(buf, "%zu\n", sizeof(note_buf_t));
}
-static DEVICE_ATTR(crash_notes_size, 0400, show_crash_notes_size, NULL);
+static DEVICE_ATTR_ADMIN_RO(crash_notes_size);
static struct attribute *crash_note_cpu_attrs[] = {
&dev_attr_crash_notes.attr,
@@ -231,7 +228,7 @@ static struct cpu_attr cpu_attrs[] = {
static ssize_t print_cpus_kernel_max(struct device *dev,
struct device_attribute *attr, char *buf)
{
- return sprintf(buf, "%d\n", NR_CPUS - 1);
+ return sysfs_emit(buf, "%d\n", NR_CPUS - 1);
}
static DEVICE_ATTR(kernel_max, 0444, print_cpus_kernel_max, NULL);
@@ -241,37 +238,37 @@ unsigned int total_cpus;
static ssize_t print_cpus_offline(struct device *dev,
struct device_attribute *attr, char *buf)
{
- int n = 0, len = PAGE_SIZE-2;
+ int len = 0;
cpumask_var_t offline;
/* display offline cpus < nr_cpu_ids */
if (!alloc_cpumask_var(&offline, GFP_KERNEL))
return -ENOMEM;
cpumask_andnot(offline, cpu_possible_mask, cpu_online_mask);
- n = scnprintf(buf, len, "%*pbl", cpumask_pr_args(offline));
+ len += sysfs_emit_at(buf, len, "%*pbl", cpumask_pr_args(offline));
free_cpumask_var(offline);
/* display offline cpus >= nr_cpu_ids */
if (total_cpus && nr_cpu_ids < total_cpus) {
- if (n && n < len)
- buf[n++] = ',';
+ len += sysfs_emit_at(buf, len, ",");
if (nr_cpu_ids == total_cpus-1)
- n += scnprintf(&buf[n], len - n, "%u", nr_cpu_ids);
+ len += sysfs_emit_at(buf, len, "%u", nr_cpu_ids);
else
- n += scnprintf(&buf[n], len - n, "%u-%d",
- nr_cpu_ids, total_cpus-1);
+ len += sysfs_emit_at(buf, len, "%u-%d",
+ nr_cpu_ids, total_cpus - 1);
}
- n += scnprintf(&buf[n], len - n, "\n");
- return n;
+ len += sysfs_emit_at(buf, len, "\n");
+
+ return len;
}
static DEVICE_ATTR(offline, 0444, print_cpus_offline, NULL);
static ssize_t print_cpus_isolated(struct device *dev,
struct device_attribute *attr, char *buf)
{
- int n;
+ int len;
cpumask_var_t isolated;
if (!alloc_cpumask_var(&isolated, GFP_KERNEL))
@@ -279,19 +276,19 @@ static ssize_t print_cpus_isolated(struct device *dev,
cpumask_andnot(isolated, cpu_possible_mask,
housekeeping_cpumask(HK_FLAG_DOMAIN));
- n = sprintf(buf, "%*pbl\n", cpumask_pr_args(isolated));
+ len = sysfs_emit(buf, "%*pbl\n", cpumask_pr_args(isolated));
free_cpumask_var(isolated);
- return n;
+ return len;
}
static DEVICE_ATTR(isolated, 0444, print_cpus_isolated, NULL);
#ifdef CONFIG_NO_HZ_FULL
static ssize_t print_cpus_nohz_full(struct device *dev,
- struct device_attribute *attr, char *buf)
+ struct device_attribute *attr, char *buf)
{
- return sprintf(buf, "%*pbl\n", cpumask_pr_args(tick_nohz_full_mask));
+ return sysfs_emit(buf, "%*pbl\n", cpumask_pr_args(tick_nohz_full_mask));
}
static DEVICE_ATTR(nohz_full, 0444, print_cpus_nohz_full, NULL);
#endif
@@ -320,22 +317,23 @@ static ssize_t print_cpu_modalias(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- ssize_t n;
+ int len = 0;
u32 i;
- n = sprintf(buf, "cpu:type:" CPU_FEATURE_TYPEFMT ":feature:",
- CPU_FEATURE_TYPEVAL);
+ len += sysfs_emit_at(buf, len,
+ "cpu:type:" CPU_FEATURE_TYPEFMT ":feature:",
+ CPU_FEATURE_TYPEVAL);
for (i = 0; i < MAX_CPU_FEATURES; i++)
if (cpu_have_feature(i)) {
- if (PAGE_SIZE < n + sizeof(",XXXX\n")) {
+ if (len + sizeof(",XXXX\n") >= PAGE_SIZE) {
WARN(1, "CPU features overflow page\n");
break;
}
- n += sprintf(&buf[n], ",%04X", i);
+ len += sysfs_emit_at(buf, len, ",%04X", i);
}
- buf[n++] = '\n';
- return n;
+ len += sysfs_emit_at(buf, len, "\n");
+ return len;
}
static int cpu_uevent(struct device *dev, struct kobj_uevent_env *env)
@@ -516,56 +514,56 @@ static void __init cpu_dev_register_generic(void)
ssize_t __weak cpu_show_meltdown(struct device *dev,
struct device_attribute *attr, char *buf)
{
- return sprintf(buf, "Not affected\n");
+ return sysfs_emit(buf, "Not affected\n");
}
ssize_t __weak cpu_show_spectre_v1(struct device *dev,
struct device_attribute *attr, char *buf)
{
- return sprintf(buf, "Not affected\n");
+ return sysfs_emit(buf, "Not affected\n");
}
ssize_t __weak cpu_show_spectre_v2(struct device *dev,
struct device_attribute *attr, char *buf)
{
- return sprintf(buf, "Not affected\n");
+ return sysfs_emit(buf, "Not affected\n");
}
ssize_t __weak cpu_show_spec_store_bypass(struct device *dev,
struct device_attribute *attr, char *buf)
{
- return sprintf(buf, "Not affected\n");
+ return sysfs_emit(buf, "Not affected\n");
}
ssize_t __weak cpu_show_l1tf(struct device *dev,
struct device_attribute *attr, char *buf)
{
- return sprintf(buf, "Not affected\n");
+ return sysfs_emit(buf, "Not affected\n");
}
ssize_t __weak cpu_show_mds(struct device *dev,
struct device_attribute *attr, char *buf)
{
- return sprintf(buf, "Not affected\n");
+ return sysfs_emit(buf, "Not affected\n");
}
ssize_t __weak cpu_show_tsx_async_abort(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- return sprintf(buf, "Not affected\n");
+ return sysfs_emit(buf, "Not affected\n");
}
ssize_t __weak cpu_show_itlb_multihit(struct device *dev,
- struct device_attribute *attr, char *buf)
+ struct device_attribute *attr, char *buf)
{
- return sprintf(buf, "Not affected\n");
+ return sysfs_emit(buf, "Not affected\n");
}
ssize_t __weak cpu_show_srbds(struct device *dev,
struct device_attribute *attr, char *buf)
{
- return sprintf(buf, "Not affected\n");
+ return sysfs_emit(buf, "Not affected\n");
}
static DEVICE_ATTR(meltdown, 0444, cpu_show_meltdown, NULL);
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 857b0a928e8d..b52d69eb4e71 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -486,7 +486,8 @@ static ssize_t state_synced_show(struct device *dev,
device_lock(dev);
val = dev->state_synced;
device_unlock(dev);
- return sprintf(buf, "%u\n", val);
+
+ return sysfs_emit(buf, "%u\n", val);
}
static DEVICE_ATTR_RO(state_synced);
@@ -658,15 +659,14 @@ done:
*/
static int really_probe_debug(struct device *dev, struct device_driver *drv)
{
- ktime_t calltime, delta, rettime;
+ ktime_t calltime, rettime;
int ret;
calltime = ktime_get();
ret = really_probe(dev, drv);
rettime = ktime_get();
- delta = ktime_sub(rettime, calltime);
pr_debug("probe of %s returned %d after %lld usecs\n",
- dev_name(dev), ret, (s64) ktime_to_us(delta));
+ dev_name(dev), ret, ktime_us_delta(rettime, calltime));
return ret;
}
diff --git a/drivers/base/devcon.c b/drivers/base/devcon.c
deleted file mode 100644
index 14e2178e09f8..000000000000
--- a/drivers/base/devcon.c
+++ /dev/null
@@ -1,231 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/**
- * Device connections
- *
- * Copyright (C) 2018 Intel Corporation
- * Author: Heikki Krogerus <heikki.krogerus@linux.intel.com>
- */
-
-#include <linux/device.h>
-#include <linux/property.h>
-
-static DEFINE_MUTEX(devcon_lock);
-static LIST_HEAD(devcon_list);
-
-static void *
-fwnode_graph_devcon_match(struct fwnode_handle *fwnode, const char *con_id,
- void *data, devcon_match_fn_t match)
-{
- struct device_connection con = { .id = con_id };
- struct fwnode_handle *ep;
- void *ret;
-
- fwnode_graph_for_each_endpoint(fwnode, ep) {
- con.fwnode = fwnode_graph_get_remote_port_parent(ep);
- if (!fwnode_device_is_available(con.fwnode))
- continue;
-
- ret = match(&con, -1, data);
- fwnode_handle_put(con.fwnode);
- if (ret) {
- fwnode_handle_put(ep);
- return ret;
- }
- }
- return NULL;
-}
-
-static void *
-fwnode_devcon_match(struct fwnode_handle *fwnode, const char *con_id,
- void *data, devcon_match_fn_t match)
-{
- struct device_connection con = { };
- void *ret;
- int i;
-
- for (i = 0; ; i++) {
- con.fwnode = fwnode_find_reference(fwnode, con_id, i);
- if (IS_ERR(con.fwnode))
- break;
-
- ret = match(&con, -1, data);
- fwnode_handle_put(con.fwnode);
- if (ret)
- return ret;
- }
-
- return NULL;
-}
-
-/**
- * fwnode_connection_find_match - Find connection from a device node
- * @fwnode: Device node with the connection
- * @con_id: Identifier for the connection
- * @data: Data for the match function
- * @match: Function to check and convert the connection description
- *
- * Find a connection with unique identifier @con_id between @fwnode and another
- * device node. @match will be used to convert the connection description to
- * data the caller is expecting to be returned.
- */
-void *fwnode_connection_find_match(struct fwnode_handle *fwnode,
- const char *con_id, void *data,
- devcon_match_fn_t match)
-{
- void *ret;
-
- if (!fwnode || !match)
- return NULL;
-
- ret = fwnode_graph_devcon_match(fwnode, con_id, data, match);
- if (ret)
- return ret;
-
- return fwnode_devcon_match(fwnode, con_id, data, match);
-}
-EXPORT_SYMBOL_GPL(fwnode_connection_find_match);
-
-/**
- * device_connection_find_match - Find physical connection to a device
- * @dev: Device with the connection
- * @con_id: Identifier for the connection
- * @data: Data for the match function
- * @match: Function to check and convert the connection description
- *
- * Find a connection with unique identifier @con_id between @dev and another
- * device. @match will be used to convert the connection description to data the
- * caller is expecting to be returned.
- */
-void *device_connection_find_match(struct device *dev, const char *con_id,
- void *data, devcon_match_fn_t match)
-{
- struct fwnode_handle *fwnode = dev_fwnode(dev);
- const char *devname = dev_name(dev);
- struct device_connection *con;
- void *ret = NULL;
- int ep;
-
- if (!match)
- return NULL;
-
- ret = fwnode_connection_find_match(fwnode, con_id, data, match);
- if (ret)
- return ret;
-
- mutex_lock(&devcon_lock);
-
- list_for_each_entry(con, &devcon_list, list) {
- ep = match_string(con->endpoint, 2, devname);
- if (ep < 0)
- continue;
-
- if (con_id && strcmp(con->id, con_id))
- continue;
-
- ret = match(con, !ep, data);
- if (ret)
- break;
- }
-
- mutex_unlock(&devcon_lock);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(device_connection_find_match);
-
-extern struct bus_type platform_bus_type;
-extern struct bus_type pci_bus_type;
-extern struct bus_type i2c_bus_type;
-extern struct bus_type spi_bus_type;
-
-static struct bus_type *generic_match_buses[] = {
- &platform_bus_type,
-#ifdef CONFIG_PCI
- &pci_bus_type,
-#endif
-#ifdef CONFIG_I2C
- &i2c_bus_type,
-#endif
-#ifdef CONFIG_SPI_MASTER
- &spi_bus_type,
-#endif
- NULL,
-};
-
-static void *device_connection_fwnode_match(struct device_connection *con)
-{
- struct bus_type *bus;
- struct device *dev;
-
- for (bus = generic_match_buses[0]; bus; bus++) {
- dev = bus_find_device_by_fwnode(bus, con->fwnode);
- if (dev && !strncmp(dev_name(dev), con->id, strlen(con->id)))
- return dev;
-
- put_device(dev);
- }
- return NULL;
-}
-
-/* This tries to find the device from the most common bus types by name. */
-static void *generic_match(struct device_connection *con, int ep, void *data)
-{
- struct bus_type *bus;
- struct device *dev;
-
- if (con->fwnode)
- return device_connection_fwnode_match(con);
-
- for (bus = generic_match_buses[0]; bus; bus++) {
- dev = bus_find_device_by_name(bus, NULL, con->endpoint[ep]);
- if (dev)
- return dev;
- }
-
- /*
- * We only get called if a connection was found, tell the caller to
- * wait for the other device to show up.
- */
- return ERR_PTR(-EPROBE_DEFER);
-}
-
-/**
- * device_connection_find - Find two devices connected together
- * @dev: Device with the connection
- * @con_id: Identifier for the connection
- *
- * Find a connection with unique identifier @con_id between @dev and
- * another device. On success returns handle to the device that is connected
- * to @dev, with the reference count for the found device incremented. Returns
- * NULL if no matching connection was found, or ERR_PTR(-EPROBE_DEFER) when a
- * connection was found but the other device has not been enumerated yet.
- */
-struct device *device_connection_find(struct device *dev, const char *con_id)
-{
- return device_connection_find_match(dev, con_id, NULL, generic_match);
-}
-EXPORT_SYMBOL_GPL(device_connection_find);
-
-/**
- * device_connection_add - Register a connection description
- * @con: The connection description to be registered
- */
-void device_connection_add(struct device_connection *con)
-{
- mutex_lock(&devcon_lock);
- list_add_tail(&con->list, &devcon_list);
- mutex_unlock(&devcon_lock);
-}
-EXPORT_SYMBOL_GPL(device_connection_add);
-
-/**
- * device_connections_remove - Unregister connection description
- * @con: The connection description to be unregistered
- */
-void device_connection_remove(struct device_connection *con)
-{
- mutex_lock(&devcon_lock);
- list_del(&con->list);
- mutex_unlock(&devcon_lock);
-}
-EXPORT_SYMBOL_GPL(device_connection_remove);
diff --git a/drivers/base/devcoredump.c b/drivers/base/devcoredump.c
index e42d0b514384..9243468e2c99 100644
--- a/drivers/base/devcoredump.c
+++ b/drivers/base/devcoredump.c
@@ -123,7 +123,7 @@ static int devcd_free(struct device *dev, void *data)
static ssize_t disabled_show(struct class *class, struct class_attribute *attr,
char *buf)
{
- return sprintf(buf, "%d\n", devcd_disabled);
+ return sysfs_emit(buf, "%d\n", devcd_disabled);
}
static ssize_t disabled_store(struct class *class, struct class_attribute *attr,
diff --git a/drivers/base/devres.c b/drivers/base/devres.c
index ed615d3b9cf1..586e9a75c840 100644
--- a/drivers/base/devres.c
+++ b/drivers/base/devres.c
@@ -126,6 +126,14 @@ static void add_dr(struct device *dev, struct devres_node *node)
list_add_tail(&node->entry, &dev->devres_head);
}
+static void replace_dr(struct device *dev,
+ struct devres_node *old, struct devres_node *new)
+{
+ devres_log(dev, old, "REPLACE");
+ BUG_ON(!list_empty(&new->entry));
+ list_replace(&old->entry, &new->entry);
+}
+
#ifdef CONFIG_DEBUG_DEVRES
void * __devres_alloc_node(dr_release_t release, size_t size, gfp_t gfp, int nid,
const char *name)
@@ -838,6 +846,103 @@ void *devm_kmalloc(struct device *dev, size_t size, gfp_t gfp)
EXPORT_SYMBOL_GPL(devm_kmalloc);
/**
+ * devm_krealloc - Resource-managed krealloc()
+ * @dev: Device to re-allocate memory for
+ * @ptr: Pointer to the memory chunk to re-allocate
+ * @new_size: New allocation size
+ * @gfp: Allocation gfp flags
+ *
+ * Managed krealloc(). Resizes the memory chunk allocated with devm_kmalloc().
+ * Behaves similarly to regular krealloc(): if @ptr is NULL or ZERO_SIZE_PTR,
+ * it's the equivalent of devm_kmalloc(). If new_size is zero, it frees the
+ * previously allocated memory and returns ZERO_SIZE_PTR. This function doesn't
+ * change the order in which the release callback for the re-alloc'ed devres
+ * will be called (except when falling back to devm_kmalloc() or when freeing
+ * resources when new_size is zero). The contents of the memory are preserved
+ * up to the lesser of new and old sizes.
+ */
+void *devm_krealloc(struct device *dev, void *ptr, size_t new_size, gfp_t gfp)
+{
+ size_t total_new_size, total_old_size;
+ struct devres *old_dr, *new_dr;
+ unsigned long flags;
+
+ if (unlikely(!new_size)) {
+ devm_kfree(dev, ptr);
+ return ZERO_SIZE_PTR;
+ }
+
+ if (unlikely(ZERO_OR_NULL_PTR(ptr)))
+ return devm_kmalloc(dev, new_size, gfp);
+
+ if (WARN_ON(is_kernel_rodata((unsigned long)ptr)))
+ /*
+ * We cannot reliably realloc a const string returned by
+ * devm_kstrdup_const().
+ */
+ return NULL;
+
+ if (!check_dr_size(new_size, &total_new_size))
+ return NULL;
+
+ total_old_size = ksize(container_of(ptr, struct devres, data));
+ if (total_old_size == 0) {
+ WARN(1, "Pointer doesn't point to dynamically allocated memory.");
+ return NULL;
+ }
+
+ /*
+ * If new size is smaller or equal to the actual number of bytes
+ * allocated previously - just return the same pointer.
+ */
+ if (total_new_size <= total_old_size)
+ return ptr;
+
+ /*
+ * Otherwise: allocate new, larger chunk. We need to allocate before
+ * taking the lock as most probably the caller uses GFP_KERNEL.
+ */
+ new_dr = alloc_dr(devm_kmalloc_release,
+ total_new_size, gfp, dev_to_node(dev));
+ if (!new_dr)
+ return NULL;
+
+ /*
+ * The spinlock protects the linked list against concurrent
+ * modifications but not the resource itself.
+ */
+ spin_lock_irqsave(&dev->devres_lock, flags);
+
+ old_dr = find_dr(dev, devm_kmalloc_release, devm_kmalloc_match, ptr);
+ if (!old_dr) {
+ spin_unlock_irqrestore(&dev->devres_lock, flags);
+ kfree(new_dr);
+ WARN(1, "Memory chunk not managed or managed by a different device.");
+ return NULL;
+ }
+
+ replace_dr(dev, &old_dr->node, &new_dr->node);
+
+ spin_unlock_irqrestore(&dev->devres_lock, flags);
+
+ /*
+ * We can copy the memory contents after releasing the lock as we're
+ * no longer modyfing the list links.
+ */
+ memcpy(new_dr->data, old_dr->data,
+ total_old_size - offsetof(struct devres, data));
+ /*
+ * Same for releasing the old devres - it's now been removed from the
+ * list. This is also the reason why we must not use devm_kfree() - the
+ * links are no longer valid.
+ */
+ kfree(old_dr);
+
+ return new_dr->data;
+}
+EXPORT_SYMBOL_GPL(devm_krealloc);
+
+/**
* devm_kstrdup - Allocate resource managed space and
* copy an existing string into that.
* @dev: Device to allocate memory for
diff --git a/drivers/base/firmware_loader/fallback.c b/drivers/base/firmware_loader/fallback.c
index 283ca2de76d4..d60e6d8c967c 100644
--- a/drivers/base/firmware_loader/fallback.c
+++ b/drivers/base/firmware_loader/fallback.c
@@ -124,7 +124,7 @@ void kill_pending_fw_fallback_reqs(bool only_kill_custom)
static ssize_t timeout_show(struct class *class, struct class_attribute *attr,
char *buf)
{
- return sprintf(buf, "%d\n", __firmware_loading_timeout());
+ return sysfs_emit(buf, "%d\n", __firmware_loading_timeout());
}
/**
@@ -219,7 +219,7 @@ static ssize_t firmware_loading_show(struct device *dev,
loading = fw_sysfs_loading(fw_sysfs->fw_priv);
mutex_unlock(&fw_lock);
- return sprintf(buf, "%d\n", loading);
+ return sysfs_emit(buf, "%d\n", loading);
}
/**
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 4db3c660de83..adf828dfccf0 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -119,7 +119,8 @@ static ssize_t phys_index_show(struct device *dev,
unsigned long phys_index;
phys_index = mem->start_section_nr / sections_per_block;
- return sprintf(buf, "%08lx\n", phys_index);
+
+ return sysfs_emit(buf, "%08lx\n", phys_index);
}
/*
@@ -129,7 +130,7 @@ static ssize_t phys_index_show(struct device *dev,
static ssize_t removable_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
- return sprintf(buf, "%d\n", (int)IS_ENABLED(CONFIG_MEMORY_HOTREMOVE));
+ return sysfs_emit(buf, "%d\n", (int)IS_ENABLED(CONFIG_MEMORY_HOTREMOVE));
}
/*
@@ -139,7 +140,7 @@ static ssize_t state_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct memory_block *mem = to_memory_block(dev);
- ssize_t len = 0;
+ const char *output;
/*
* We can probably put these states in a nice little array
@@ -147,22 +148,20 @@ static ssize_t state_show(struct device *dev, struct device_attribute *attr,
*/
switch (mem->state) {
case MEM_ONLINE:
- len = sprintf(buf, "online\n");
+ output = "online";
break;
case MEM_OFFLINE:
- len = sprintf(buf, "offline\n");
+ output = "offline";
break;
case MEM_GOING_OFFLINE:
- len = sprintf(buf, "going-offline\n");
+ output = "going-offline";
break;
default:
- len = sprintf(buf, "ERROR-UNKNOWN-%ld\n",
- mem->state);
WARN_ON(1);
- break;
+ return sysfs_emit(buf, "ERROR-UNKNOWN-%ld\n", mem->state);
}
- return len;
+ return sysfs_emit(buf, "%s\n", output);
}
int memory_notify(unsigned long val, void *v)
@@ -303,21 +302,22 @@ static ssize_t phys_device_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct memory_block *mem = to_memory_block(dev);
- return sprintf(buf, "%d\n", mem->phys_device);
+
+ return sysfs_emit(buf, "%d\n", mem->phys_device);
}
#ifdef CONFIG_MEMORY_HOTREMOVE
-static void print_allowed_zone(char *buf, int nid, unsigned long start_pfn,
- unsigned long nr_pages, int online_type,
- struct zone *default_zone)
+static int print_allowed_zone(char *buf, int len, int nid,
+ unsigned long start_pfn, unsigned long nr_pages,
+ int online_type, struct zone *default_zone)
{
struct zone *zone;
zone = zone_for_pfn_range(online_type, nid, start_pfn, nr_pages);
- if (zone != default_zone) {
- strcat(buf, " ");
- strcat(buf, zone->name);
- }
+ if (zone == default_zone)
+ return 0;
+
+ return sysfs_emit_at(buf, len, " %s", zone->name);
}
static ssize_t valid_zones_show(struct device *dev,
@@ -327,6 +327,7 @@ static ssize_t valid_zones_show(struct device *dev,
unsigned long start_pfn = section_nr_to_pfn(mem->start_section_nr);
unsigned long nr_pages = PAGES_PER_SECTION * sections_per_block;
struct zone *default_zone;
+ int len = 0;
int nid;
/*
@@ -341,24 +342,23 @@ static ssize_t valid_zones_show(struct device *dev,
default_zone = test_pages_in_a_zone(start_pfn,
start_pfn + nr_pages);
if (!default_zone)
- return sprintf(buf, "none\n");
- strcat(buf, default_zone->name);
+ return sysfs_emit(buf, "%s\n", "none");
+ len += sysfs_emit_at(buf, len, "%s", default_zone->name);
goto out;
}
nid = mem->nid;
default_zone = zone_for_pfn_range(MMOP_ONLINE, nid, start_pfn,
nr_pages);
- strcat(buf, default_zone->name);
- print_allowed_zone(buf, nid, start_pfn, nr_pages, MMOP_ONLINE_KERNEL,
- default_zone);
- print_allowed_zone(buf, nid, start_pfn, nr_pages, MMOP_ONLINE_MOVABLE,
- default_zone);
+ len += sysfs_emit_at(buf, len, "%s", default_zone->name);
+ len += print_allowed_zone(buf, len, nid, start_pfn, nr_pages,
+ MMOP_ONLINE_KERNEL, default_zone);
+ len += print_allowed_zone(buf, len, nid, start_pfn, nr_pages,
+ MMOP_ONLINE_MOVABLE, default_zone);
out:
- strcat(buf, "\n");
-
- return strlen(buf);
+ len += sysfs_emit_at(buf, len, "\n");
+ return len;
}
static DEVICE_ATTR_RO(valid_zones);
#endif
@@ -374,7 +374,7 @@ static DEVICE_ATTR_RO(removable);
static ssize_t block_size_bytes_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- return sprintf(buf, "%lx\n", memory_block_size_bytes());
+ return sysfs_emit(buf, "%lx\n", memory_block_size_bytes());
}
static DEVICE_ATTR_RO(block_size_bytes);
@@ -386,8 +386,8 @@ static DEVICE_ATTR_RO(block_size_bytes);
static ssize_t auto_online_blocks_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- return sprintf(buf, "%s\n",
- online_type_to_str[memhp_default_online_type]);
+ return sysfs_emit(buf, "%s\n",
+ online_type_to_str[memhp_default_online_type]);
}
static ssize_t auto_online_blocks_store(struct device *dev,
diff --git a/drivers/base/node.c b/drivers/base/node.c
index 5ca6f8905db2..43d21f9e88b1 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -46,19 +46,23 @@ static ssize_t node_read_cpumap(struct device *dev, bool list, char *buf)
return n;
}
-static inline ssize_t node_read_cpumask(struct device *dev,
- struct device_attribute *attr, char *buf)
+static inline ssize_t cpumap_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
{
return node_read_cpumap(dev, false, buf);
}
-static inline ssize_t node_read_cpulist(struct device *dev,
- struct device_attribute *attr, char *buf)
+
+static DEVICE_ATTR_RO(cpumap);
+
+static inline ssize_t cpulist_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
{
return node_read_cpumap(dev, true, buf);
}
-static DEVICE_ATTR(cpumap, S_IRUGO, node_read_cpumask, NULL);
-static DEVICE_ATTR(cpulist, S_IRUGO, node_read_cpulist, NULL);
+static DEVICE_ATTR_RO(cpulist);
/**
* struct node_access_nodes - Access class device to hold user visible
@@ -153,19 +157,20 @@ free:
}
#ifdef CONFIG_HMEM_REPORTING
-#define ACCESS_ATTR(name) \
-static ssize_t name##_show(struct device *dev, \
- struct device_attribute *attr, \
- char *buf) \
-{ \
- return sprintf(buf, "%u\n", to_access_nodes(dev)->hmem_attrs.name); \
-} \
-static DEVICE_ATTR_RO(name);
-
-ACCESS_ATTR(read_bandwidth)
-ACCESS_ATTR(read_latency)
-ACCESS_ATTR(write_bandwidth)
-ACCESS_ATTR(write_latency)
+#define ACCESS_ATTR(name) \
+static ssize_t name##_show(struct device *dev, \
+ struct device_attribute *attr, \
+ char *buf) \
+{ \
+ return sysfs_emit(buf, "%u\n", \
+ to_access_nodes(dev)->hmem_attrs.name); \
+} \
+static DEVICE_ATTR_RO(name)
+
+ACCESS_ATTR(read_bandwidth);
+ACCESS_ATTR(read_latency);
+ACCESS_ATTR(write_bandwidth);
+ACCESS_ATTR(write_latency);
static struct attribute *access_attrs[] = {
&dev_attr_read_bandwidth.attr,
@@ -225,7 +230,8 @@ static ssize_t name##_show(struct device *dev, \
struct device_attribute *attr, \
char *buf) \
{ \
- return sprintf(buf, fmt "\n", to_cache_info(dev)->cache_attrs.name);\
+ return sysfs_emit(buf, fmt "\n", \
+ to_cache_info(dev)->cache_attrs.name); \
} \
DEVICE_ATTR_RO(name);
@@ -361,7 +367,7 @@ static void node_remove_caches(struct node *node) { }
static ssize_t node_read_meminfo(struct device *dev,
struct device_attribute *attr, char *buf)
{
- int n;
+ int len = 0;
int nid = dev->id;
struct pglist_data *pgdat = NODE_DATA(nid);
struct sysinfo i;
@@ -370,128 +376,128 @@ static ssize_t node_read_meminfo(struct device *dev,
si_meminfo_node(&i, nid);
sreclaimable = node_page_state_pages(pgdat, NR_SLAB_RECLAIMABLE_B);
sunreclaimable = node_page_state_pages(pgdat, NR_SLAB_UNRECLAIMABLE_B);
- n = sprintf(buf,
- "Node %d MemTotal: %8lu kB\n"
- "Node %d MemFree: %8lu kB\n"
- "Node %d MemUsed: %8lu kB\n"
- "Node %d Active: %8lu kB\n"
- "Node %d Inactive: %8lu kB\n"
- "Node %d Active(anon): %8lu kB\n"
- "Node %d Inactive(anon): %8lu kB\n"
- "Node %d Active(file): %8lu kB\n"
- "Node %d Inactive(file): %8lu kB\n"
- "Node %d Unevictable: %8lu kB\n"
- "Node %d Mlocked: %8lu kB\n",
- nid, K(i.totalram),
- nid, K(i.freeram),
- nid, K(i.totalram - i.freeram),
- nid, K(node_page_state(pgdat, NR_ACTIVE_ANON) +
- node_page_state(pgdat, NR_ACTIVE_FILE)),
- nid, K(node_page_state(pgdat, NR_INACTIVE_ANON) +
- node_page_state(pgdat, NR_INACTIVE_FILE)),
- nid, K(node_page_state(pgdat, NR_ACTIVE_ANON)),
- nid, K(node_page_state(pgdat, NR_INACTIVE_ANON)),
- nid, K(node_page_state(pgdat, NR_ACTIVE_FILE)),
- nid, K(node_page_state(pgdat, NR_INACTIVE_FILE)),
- nid, K(node_page_state(pgdat, NR_UNEVICTABLE)),
- nid, K(sum_zone_node_page_state(nid, NR_MLOCK)));
+ len = sysfs_emit_at(buf, len,
+ "Node %d MemTotal: %8lu kB\n"
+ "Node %d MemFree: %8lu kB\n"
+ "Node %d MemUsed: %8lu kB\n"
+ "Node %d Active: %8lu kB\n"
+ "Node %d Inactive: %8lu kB\n"
+ "Node %d Active(anon): %8lu kB\n"
+ "Node %d Inactive(anon): %8lu kB\n"
+ "Node %d Active(file): %8lu kB\n"
+ "Node %d Inactive(file): %8lu kB\n"
+ "Node %d Unevictable: %8lu kB\n"
+ "Node %d Mlocked: %8lu kB\n",
+ nid, K(i.totalram),
+ nid, K(i.freeram),
+ nid, K(i.totalram - i.freeram),
+ nid, K(node_page_state(pgdat, NR_ACTIVE_ANON) +
+ node_page_state(pgdat, NR_ACTIVE_FILE)),
+ nid, K(node_page_state(pgdat, NR_INACTIVE_ANON) +
+ node_page_state(pgdat, NR_INACTIVE_FILE)),
+ nid, K(node_page_state(pgdat, NR_ACTIVE_ANON)),
+ nid, K(node_page_state(pgdat, NR_INACTIVE_ANON)),
+ nid, K(node_page_state(pgdat, NR_ACTIVE_FILE)),
+ nid, K(node_page_state(pgdat, NR_INACTIVE_FILE)),
+ nid, K(node_page_state(pgdat, NR_UNEVICTABLE)),
+ nid, K(sum_zone_node_page_state(nid, NR_MLOCK)));
#ifdef CONFIG_HIGHMEM
- n += sprintf(buf + n,
- "Node %d HighTotal: %8lu kB\n"
- "Node %d HighFree: %8lu kB\n"
- "Node %d LowTotal: %8lu kB\n"
- "Node %d LowFree: %8lu kB\n",
- nid, K(i.totalhigh),
- nid, K(i.freehigh),
- nid, K(i.totalram - i.totalhigh),
- nid, K(i.freeram - i.freehigh));
+ len += sysfs_emit_at(buf, len,
+ "Node %d HighTotal: %8lu kB\n"
+ "Node %d HighFree: %8lu kB\n"
+ "Node %d LowTotal: %8lu kB\n"
+ "Node %d LowFree: %8lu kB\n",
+ nid, K(i.totalhigh),
+ nid, K(i.freehigh),
+ nid, K(i.totalram - i.totalhigh),
+ nid, K(i.freeram - i.freehigh));
#endif
- n += sprintf(buf + n,
- "Node %d Dirty: %8lu kB\n"
- "Node %d Writeback: %8lu kB\n"
- "Node %d FilePages: %8lu kB\n"
- "Node %d Mapped: %8lu kB\n"
- "Node %d AnonPages: %8lu kB\n"
- "Node %d Shmem: %8lu kB\n"
- "Node %d KernelStack: %8lu kB\n"
+ len += sysfs_emit_at(buf, len,
+ "Node %d Dirty: %8lu kB\n"
+ "Node %d Writeback: %8lu kB\n"
+ "Node %d FilePages: %8lu kB\n"
+ "Node %d Mapped: %8lu kB\n"
+ "Node %d AnonPages: %8lu kB\n"
+ "Node %d Shmem: %8lu kB\n"
+ "Node %d KernelStack: %8lu kB\n"
#ifdef CONFIG_SHADOW_CALL_STACK
- "Node %d ShadowCallStack:%8lu kB\n"
+ "Node %d ShadowCallStack:%8lu kB\n"
#endif
- "Node %d PageTables: %8lu kB\n"
- "Node %d NFS_Unstable: %8lu kB\n"
- "Node %d Bounce: %8lu kB\n"
- "Node %d WritebackTmp: %8lu kB\n"
- "Node %d KReclaimable: %8lu kB\n"
- "Node %d Slab: %8lu kB\n"
- "Node %d SReclaimable: %8lu kB\n"
- "Node %d SUnreclaim: %8lu kB\n"
+ "Node %d PageTables: %8lu kB\n"
+ "Node %d NFS_Unstable: %8lu kB\n"
+ "Node %d Bounce: %8lu kB\n"
+ "Node %d WritebackTmp: %8lu kB\n"
+ "Node %d KReclaimable: %8lu kB\n"
+ "Node %d Slab: %8lu kB\n"
+ "Node %d SReclaimable: %8lu kB\n"
+ "Node %d SUnreclaim: %8lu kB\n"
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
- "Node %d AnonHugePages: %8lu kB\n"
- "Node %d ShmemHugePages: %8lu kB\n"
- "Node %d ShmemPmdMapped: %8lu kB\n"
- "Node %d FileHugePages: %8lu kB\n"
- "Node %d FilePmdMapped: %8lu kB\n"
+ "Node %d AnonHugePages: %8lu kB\n"
+ "Node %d ShmemHugePages: %8lu kB\n"
+ "Node %d ShmemPmdMapped: %8lu kB\n"
+ "Node %d FileHugePages: %8lu kB\n"
+ "Node %d FilePmdMapped: %8lu kB\n"
#endif
- ,
- nid, K(node_page_state(pgdat, NR_FILE_DIRTY)),
- nid, K(node_page_state(pgdat, NR_WRITEBACK)),
- nid, K(node_page_state(pgdat, NR_FILE_PAGES)),
- nid, K(node_page_state(pgdat, NR_FILE_MAPPED)),
- nid, K(node_page_state(pgdat, NR_ANON_MAPPED)),
- nid, K(i.sharedram),
- nid, node_page_state(pgdat, NR_KERNEL_STACK_KB),
+ ,
+ nid, K(node_page_state(pgdat, NR_FILE_DIRTY)),
+ nid, K(node_page_state(pgdat, NR_WRITEBACK)),
+ nid, K(node_page_state(pgdat, NR_FILE_PAGES)),
+ nid, K(node_page_state(pgdat, NR_FILE_MAPPED)),
+ nid, K(node_page_state(pgdat, NR_ANON_MAPPED)),
+ nid, K(i.sharedram),
+ nid, node_page_state(pgdat, NR_KERNEL_STACK_KB),
#ifdef CONFIG_SHADOW_CALL_STACK
- nid, node_page_state(pgdat, NR_KERNEL_SCS_KB),
+ nid, node_page_state(pgdat, NR_KERNEL_SCS_KB),
#endif
- nid, K(sum_zone_node_page_state(nid, NR_PAGETABLE)),
- nid, 0UL,
- nid, K(sum_zone_node_page_state(nid, NR_BOUNCE)),
- nid, K(node_page_state(pgdat, NR_WRITEBACK_TEMP)),
- nid, K(sreclaimable +
- node_page_state(pgdat, NR_KERNEL_MISC_RECLAIMABLE)),
- nid, K(sreclaimable + sunreclaimable),
- nid, K(sreclaimable),
- nid, K(sunreclaimable)
+ nid, K(sum_zone_node_page_state(nid, NR_PAGETABLE)),
+ nid, 0UL,
+ nid, K(sum_zone_node_page_state(nid, NR_BOUNCE)),
+ nid, K(node_page_state(pgdat, NR_WRITEBACK_TEMP)),
+ nid, K(sreclaimable +
+ node_page_state(pgdat, NR_KERNEL_MISC_RECLAIMABLE)),
+ nid, K(sreclaimable + sunreclaimable),
+ nid, K(sreclaimable),
+ nid, K(sunreclaimable)
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
- ,
- nid, K(node_page_state(pgdat, NR_ANON_THPS) *
- HPAGE_PMD_NR),
- nid, K(node_page_state(pgdat, NR_SHMEM_THPS) *
- HPAGE_PMD_NR),
- nid, K(node_page_state(pgdat, NR_SHMEM_PMDMAPPED) *
- HPAGE_PMD_NR),
- nid, K(node_page_state(pgdat, NR_FILE_THPS) *
- HPAGE_PMD_NR),
- nid, K(node_page_state(pgdat, NR_FILE_PMDMAPPED) *
- HPAGE_PMD_NR)
+ ,
+ nid, K(node_page_state(pgdat, NR_ANON_THPS) *
+ HPAGE_PMD_NR),
+ nid, K(node_page_state(pgdat, NR_SHMEM_THPS) *
+ HPAGE_PMD_NR),
+ nid, K(node_page_state(pgdat, NR_SHMEM_PMDMAPPED) *
+ HPAGE_PMD_NR),
+ nid, K(node_page_state(pgdat, NR_FILE_THPS) *
+ HPAGE_PMD_NR),
+ nid, K(node_page_state(pgdat, NR_FILE_PMDMAPPED) *
+ HPAGE_PMD_NR)
#endif
- );
- n += hugetlb_report_node_meminfo(nid, buf + n);
- return n;
+ );
+ len += hugetlb_report_node_meminfo(buf, len, nid);
+ return len;
}
#undef K
-static DEVICE_ATTR(meminfo, S_IRUGO, node_read_meminfo, NULL);
+static DEVICE_ATTR(meminfo, 0444, node_read_meminfo, NULL);
static ssize_t node_read_numastat(struct device *dev,
- struct device_attribute *attr, char *buf)
+ struct device_attribute *attr, char *buf)
{
- return sprintf(buf,
- "numa_hit %lu\n"
- "numa_miss %lu\n"
- "numa_foreign %lu\n"
- "interleave_hit %lu\n"
- "local_node %lu\n"
- "other_node %lu\n",
- sum_zone_numa_state(dev->id, NUMA_HIT),
- sum_zone_numa_state(dev->id, NUMA_MISS),
- sum_zone_numa_state(dev->id, NUMA_FOREIGN),
- sum_zone_numa_state(dev->id, NUMA_INTERLEAVE_HIT),
- sum_zone_numa_state(dev->id, NUMA_LOCAL),
- sum_zone_numa_state(dev->id, NUMA_OTHER));
+ return sysfs_emit(buf,
+ "numa_hit %lu\n"
+ "numa_miss %lu\n"
+ "numa_foreign %lu\n"
+ "interleave_hit %lu\n"
+ "local_node %lu\n"
+ "other_node %lu\n",
+ sum_zone_numa_state(dev->id, NUMA_HIT),
+ sum_zone_numa_state(dev->id, NUMA_MISS),
+ sum_zone_numa_state(dev->id, NUMA_FOREIGN),
+ sum_zone_numa_state(dev->id, NUMA_INTERLEAVE_HIT),
+ sum_zone_numa_state(dev->id, NUMA_LOCAL),
+ sum_zone_numa_state(dev->id, NUMA_OTHER));
}
-static DEVICE_ATTR(numastat, S_IRUGO, node_read_numastat, NULL);
+static DEVICE_ATTR(numastat, 0444, node_read_numastat, NULL);
static ssize_t node_read_vmstat(struct device *dev,
struct device_attribute *attr, char *buf)
@@ -499,28 +505,31 @@ static ssize_t node_read_vmstat(struct device *dev,
int nid = dev->id;
struct pglist_data *pgdat = NODE_DATA(nid);
int i;
- int n = 0;
+ int len = 0;
for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++)
- n += sprintf(buf+n, "%s %lu\n", zone_stat_name(i),
- sum_zone_node_page_state(nid, i));
+ len += sysfs_emit_at(buf, len, "%s %lu\n",
+ zone_stat_name(i),
+ sum_zone_node_page_state(nid, i));
#ifdef CONFIG_NUMA
for (i = 0; i < NR_VM_NUMA_STAT_ITEMS; i++)
- n += sprintf(buf+n, "%s %lu\n", numa_stat_name(i),
- sum_zone_numa_state(nid, i));
-#endif
+ len += sysfs_emit_at(buf, len, "%s %lu\n",
+ numa_stat_name(i),
+ sum_zone_numa_state(nid, i));
+#endif
for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++)
- n += sprintf(buf+n, "%s %lu\n", node_stat_name(i),
- node_page_state_pages(pgdat, i));
+ len += sysfs_emit_at(buf, len, "%s %lu\n",
+ node_stat_name(i),
+ node_page_state_pages(pgdat, i));
- return n;
+ return len;
}
-static DEVICE_ATTR(vmstat, S_IRUGO, node_read_vmstat, NULL);
+static DEVICE_ATTR(vmstat, 0444, node_read_vmstat, NULL);
static ssize_t node_read_distance(struct device *dev,
- struct device_attribute *attr, char *buf)
+ struct device_attribute *attr, char *buf)
{
int nid = dev->id;
int len = 0;
@@ -532,13 +541,15 @@ static ssize_t node_read_distance(struct device *dev,
*/
BUILD_BUG_ON(MAX_NUMNODES * 4 > PAGE_SIZE);
- for_each_online_node(i)
- len += sprintf(buf + len, "%s%d", i ? " " : "", node_distance(nid, i));
+ for_each_online_node(i) {
+ len += sysfs_emit_at(buf, len, "%s%d",
+ i ? " " : "", node_distance(nid, i));
+ }
- len += sprintf(buf + len, "\n");
+ len += sysfs_emit_at(buf, len, "\n");
return len;
}
-static DEVICE_ATTR(distance, S_IRUGO, node_read_distance, NULL);
+static DEVICE_ATTR(distance, 0444, node_read_distance, NULL);
static struct attribute *node_dev_attrs[] = {
&dev_attr_cpumap.attr,
@@ -970,17 +981,6 @@ void unregister_one_node(int nid)
* node states attributes
*/
-static ssize_t print_nodes_state(enum node_states state, char *buf)
-{
- int n;
-
- n = scnprintf(buf, PAGE_SIZE - 1, "%*pbl",
- nodemask_pr_args(&node_states[state]));
- buf[n++] = '\n';
- buf[n] = '\0';
- return n;
-}
-
struct node_attr {
struct device_attribute attr;
enum node_states state;
@@ -990,7 +990,9 @@ static ssize_t show_node_state(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct node_attr *na = container_of(attr, struct node_attr, attr);
- return print_nodes_state(na->state, buf);
+
+ return sysfs_emit(buf, "%*pbl\n",
+ nodemask_pr_args(&node_states[na->state]));
}
#define _NODE_ATTR(name, state) \
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index e5d8a0503b4f..88aef93eb4dd 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -45,6 +45,8 @@ EXPORT_SYMBOL_GPL(platform_bus);
* @dev: platform device
* @type: resource type
* @num: resource index
+ *
+ * Return: a pointer to the resource or NULL on failure.
*/
struct resource *platform_get_resource(struct platform_device *dev,
unsigned int type, unsigned int num)
@@ -70,6 +72,9 @@ EXPORT_SYMBOL_GPL(platform_get_resource);
* resource management
* @index: resource index
* @res: optional output parameter to store a pointer to the obtained resource.
+ *
+ * Return: a pointer to the remapped memory or an ERR_PTR() encoded error code
+ * on failure.
*/
void __iomem *
devm_platform_get_and_ioremap_resource(struct platform_device *pdev,
@@ -91,6 +96,9 @@ EXPORT_SYMBOL_GPL(devm_platform_get_and_ioremap_resource);
* @pdev: platform device to use both for memory resource lookup as well as
* resource management
* @index: resource index
+ *
+ * Return: a pointer to the remapped memory or an ERR_PTR() encoded error code
+ * on failure.
*/
void __iomem *devm_platform_ioremap_resource(struct platform_device *pdev,
unsigned int index)
@@ -106,6 +114,9 @@ EXPORT_SYMBOL_GPL(devm_platform_ioremap_resource);
* @pdev: platform device to use both for memory resource lookup as well as
* resource management
* @index: resource index
+ *
+ * Return: a pointer to the remapped memory or an ERR_PTR() encoded error code
+ * on failure.
*/
void __iomem *devm_platform_ioremap_resource_wc(struct platform_device *pdev,
unsigned int index)
@@ -124,6 +135,9 @@ void __iomem *devm_platform_ioremap_resource_wc(struct platform_device *pdev,
* @pdev: platform device to use both for memory resource lookup as well as
* resource management
* @name: name of the resource
+ *
+ * Return: a pointer to the remapped memory or an ERR_PTR() encoded error code
+ * on failure.
*/
void __iomem *
devm_platform_ioremap_resource_byname(struct platform_device *pdev,
@@ -559,7 +573,7 @@ int platform_device_add(struct platform_device *pdev)
* that we remember it must be freed, and we append a suffix
* to avoid namespace collision with explicit IDs.
*/
- ret = ida_simple_get(&platform_devid_ida, 0, 0, GFP_KERNEL);
+ ret = ida_alloc(&platform_devid_ida, GFP_KERNEL);
if (ret < 0)
goto err_out;
pdev->id = ret;
@@ -600,7 +614,7 @@ int platform_device_add(struct platform_device *pdev)
failed:
if (pdev->id_auto) {
- ida_simple_remove(&platform_devid_ida, pdev->id);
+ ida_free(&platform_devid_ida, pdev->id);
pdev->id = PLATFORM_DEVID_AUTO;
}
@@ -631,7 +645,7 @@ void platform_device_del(struct platform_device *pdev)
device_del(&pdev->dev);
if (pdev->id_auto) {
- ida_simple_remove(&platform_devid_ida, pdev->id);
+ ida_free(&platform_devid_ida, pdev->id);
pdev->id = PLATFORM_DEVID_AUTO;
}
@@ -1009,10 +1023,10 @@ EXPORT_SYMBOL_GPL(platform_unregister_drivers);
* (b) sysfs attribute lets new-style coldplug recover from hotplug events
* mishandled before system is fully running: "modprobe $(cat modalias)"
*/
-static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
- char *buf)
+static ssize_t modalias_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
- struct platform_device *pdev = to_platform_device(dev);
+ struct platform_device *pdev = to_platform_device(dev);
int len;
len = of_device_modalias(dev, buf, PAGE_SIZE);
@@ -1023,9 +1037,7 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
if (len != -ENODEV)
return len;
- len = snprintf(buf, PAGE_SIZE, "platform:%s\n", pdev->name);
-
- return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
+ return sysfs_emit(buf, "platform:%s\n", pdev->name);
}
static DEVICE_ATTR_RO(modalias);
@@ -1070,16 +1082,17 @@ static ssize_t driver_override_show(struct device *dev,
ssize_t len;
device_lock(dev);
- len = sprintf(buf, "%s\n", pdev->driver_override);
+ len = sysfs_emit(buf, "%s\n", pdev->driver_override);
device_unlock(dev);
+
return len;
}
static DEVICE_ATTR_RW(driver_override);
static ssize_t numa_node_show(struct device *dev,
- struct device_attribute *attr, char *buf)
+ struct device_attribute *attr, char *buf)
{
- return sprintf(buf, "%d\n", dev_to_node(dev));
+ return sysfs_emit(buf, "%d\n", dev_to_node(dev));
}
static DEVICE_ATTR_RO(numa_node);
diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c
index c7b24812523c..a1474fb67db9 100644
--- a/drivers/base/power/sysfs.c
+++ b/drivers/base/power/sysfs.c
@@ -101,8 +101,8 @@ static const char ctrl_on[] = "on";
static ssize_t control_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
- return sprintf(buf, "%s\n",
- dev->power.runtime_auto ? ctrl_auto : ctrl_on);
+ return sysfs_emit(buf, "%s\n",
+ dev->power.runtime_auto ? ctrl_auto : ctrl_on);
}
static ssize_t control_store(struct device * dev, struct device_attribute *attr,
@@ -122,67 +122,71 @@ static ssize_t control_store(struct device * dev, struct device_attribute *attr,
static DEVICE_ATTR_RW(control);
static ssize_t runtime_active_time_show(struct device *dev,
- struct device_attribute *attr, char *buf)
+ struct device_attribute *attr,
+ char *buf)
{
- int ret;
u64 tmp = pm_runtime_active_time(dev);
+
do_div(tmp, NSEC_PER_MSEC);
- ret = sprintf(buf, "%llu\n", tmp);
- return ret;
+
+ return sysfs_emit(buf, "%llu\n", tmp);
}
static DEVICE_ATTR_RO(runtime_active_time);
static ssize_t runtime_suspended_time_show(struct device *dev,
- struct device_attribute *attr, char *buf)
+ struct device_attribute *attr,
+ char *buf)
{
- int ret;
u64 tmp = pm_runtime_suspended_time(dev);
+
do_div(tmp, NSEC_PER_MSEC);
- ret = sprintf(buf, "%llu\n", tmp);
- return ret;
+
+ return sysfs_emit(buf, "%llu\n", tmp);
}
static DEVICE_ATTR_RO(runtime_suspended_time);
static ssize_t runtime_status_show(struct device *dev,
- struct device_attribute *attr, char *buf)
+ struct device_attribute *attr, char *buf)
{
- const char *p;
+ const char *output;
if (dev->power.runtime_error) {
- p = "error\n";
+ output = "error";
} else if (dev->power.disable_depth) {
- p = "unsupported\n";
+ output = "unsupported";
} else {
switch (dev->power.runtime_status) {
case RPM_SUSPENDED:
- p = "suspended\n";
+ output = "suspended";
break;
case RPM_SUSPENDING:
- p = "suspending\n";
+ output = "suspending";
break;
case RPM_RESUMING:
- p = "resuming\n";
+ output = "resuming";
break;
case RPM_ACTIVE:
- p = "active\n";
+ output = "active";
break;
default:
return -EIO;
}
}
- return sprintf(buf, p);
+ return sysfs_emit(buf, "%s\n", output);
}
static DEVICE_ATTR_RO(runtime_status);
static ssize_t autosuspend_delay_ms_show(struct device *dev,
- struct device_attribute *attr, char *buf)
+ struct device_attribute *attr,
+ char *buf)
{
if (!dev->power.use_autosuspend)
return -EIO;
- return sprintf(buf, "%d\n", dev->power.autosuspend_delay);
+
+ return sysfs_emit(buf, "%d\n", dev->power.autosuspend_delay);
}
static ssize_t autosuspend_delay_ms_store(struct device *dev,
@@ -211,11 +215,11 @@ static ssize_t pm_qos_resume_latency_us_show(struct device *dev,
s32 value = dev_pm_qos_requested_resume_latency(dev);
if (value == 0)
- return sprintf(buf, "n/a\n");
+ return sysfs_emit(buf, "n/a\n");
if (value == PM_QOS_RESUME_LATENCY_NO_CONSTRAINT)
value = 0;
- return sprintf(buf, "%d\n", value);
+ return sysfs_emit(buf, "%d\n", value);
}
static ssize_t pm_qos_resume_latency_us_store(struct device *dev,
@@ -255,11 +259,11 @@ static ssize_t pm_qos_latency_tolerance_us_show(struct device *dev,
s32 value = dev_pm_qos_get_user_latency_tolerance(dev);
if (value < 0)
- return sprintf(buf, "auto\n");
+ return sysfs_emit(buf, "%s\n", "auto");
if (value == PM_QOS_LATENCY_ANY)
- return sprintf(buf, "any\n");
+ return sysfs_emit(buf, "%s\n", "any");
- return sprintf(buf, "%d\n", value);
+ return sysfs_emit(buf, "%d\n", value);
}
static ssize_t pm_qos_latency_tolerance_us_store(struct device *dev,
@@ -291,8 +295,8 @@ static ssize_t pm_qos_no_power_off_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- return sprintf(buf, "%d\n", !!(dev_pm_qos_requested_flags(dev)
- & PM_QOS_FLAG_NO_POWER_OFF));
+ return sysfs_emit(buf, "%d\n", !!(dev_pm_qos_requested_flags(dev)
+ & PM_QOS_FLAG_NO_POWER_OFF));
}
static ssize_t pm_qos_no_power_off_store(struct device *dev,
@@ -320,9 +324,9 @@ static const char _disabled[] = "disabled";
static ssize_t wakeup_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
- return sprintf(buf, "%s\n", device_can_wakeup(dev)
- ? (device_may_wakeup(dev) ? _enabled : _disabled)
- : "");
+ return sysfs_emit(buf, "%s\n", device_can_wakeup(dev)
+ ? (device_may_wakeup(dev) ? _enabled : _disabled)
+ : "");
}
static ssize_t wakeup_store(struct device *dev, struct device_attribute *attr,
@@ -345,7 +349,7 @@ static DEVICE_ATTR_RW(wakeup);
static ssize_t wakeup_count_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- unsigned long count = 0;
+ unsigned long count;
bool enabled = false;
spin_lock_irq(&dev->power.lock);
@@ -354,7 +358,10 @@ static ssize_t wakeup_count_show(struct device *dev,
enabled = true;
}
spin_unlock_irq(&dev->power.lock);
- return enabled ? sprintf(buf, "%lu\n", count) : sprintf(buf, "\n");
+
+ if (!enabled)
+ return sysfs_emit(buf, "\n");
+ return sysfs_emit(buf, "%lu\n", count);
}
static DEVICE_ATTR_RO(wakeup_count);
@@ -363,7 +370,7 @@ static ssize_t wakeup_active_count_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- unsigned long count = 0;
+ unsigned long count;
bool enabled = false;
spin_lock_irq(&dev->power.lock);
@@ -372,7 +379,10 @@ static ssize_t wakeup_active_count_show(struct device *dev,
enabled = true;
}
spin_unlock_irq(&dev->power.lock);
- return enabled ? sprintf(buf, "%lu\n", count) : sprintf(buf, "\n");
+
+ if (!enabled)
+ return sysfs_emit(buf, "\n");
+ return sysfs_emit(buf, "%lu\n", count);
}
static DEVICE_ATTR_RO(wakeup_active_count);
@@ -381,7 +391,7 @@ static ssize_t wakeup_abort_count_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- unsigned long count = 0;
+ unsigned long count;
bool enabled = false;
spin_lock_irq(&dev->power.lock);
@@ -390,7 +400,10 @@ static ssize_t wakeup_abort_count_show(struct device *dev,
enabled = true;
}
spin_unlock_irq(&dev->power.lock);
- return enabled ? sprintf(buf, "%lu\n", count) : sprintf(buf, "\n");
+
+ if (!enabled)
+ return sysfs_emit(buf, "\n");
+ return sysfs_emit(buf, "%lu\n", count);
}
static DEVICE_ATTR_RO(wakeup_abort_count);
@@ -399,7 +412,7 @@ static ssize_t wakeup_expire_count_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- unsigned long count = 0;
+ unsigned long count;
bool enabled = false;
spin_lock_irq(&dev->power.lock);
@@ -408,7 +421,10 @@ static ssize_t wakeup_expire_count_show(struct device *dev,
enabled = true;
}
spin_unlock_irq(&dev->power.lock);
- return enabled ? sprintf(buf, "%lu\n", count) : sprintf(buf, "\n");
+
+ if (!enabled)
+ return sysfs_emit(buf, "\n");
+ return sysfs_emit(buf, "%lu\n", count);
}
static DEVICE_ATTR_RO(wakeup_expire_count);
@@ -416,7 +432,7 @@ static DEVICE_ATTR_RO(wakeup_expire_count);
static ssize_t wakeup_active_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- unsigned int active = 0;
+ unsigned int active;
bool enabled = false;
spin_lock_irq(&dev->power.lock);
@@ -425,7 +441,10 @@ static ssize_t wakeup_active_show(struct device *dev,
enabled = true;
}
spin_unlock_irq(&dev->power.lock);
- return enabled ? sprintf(buf, "%u\n", active) : sprintf(buf, "\n");
+
+ if (!enabled)
+ return sysfs_emit(buf, "\n");
+ return sysfs_emit(buf, "%u\n", active);
}
static DEVICE_ATTR_RO(wakeup_active);
@@ -434,7 +453,7 @@ static ssize_t wakeup_total_time_ms_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- s64 msec = 0;
+ s64 msec;
bool enabled = false;
spin_lock_irq(&dev->power.lock);
@@ -443,7 +462,10 @@ static ssize_t wakeup_total_time_ms_show(struct device *dev,
enabled = true;
}
spin_unlock_irq(&dev->power.lock);
- return enabled ? sprintf(buf, "%lld\n", msec) : sprintf(buf, "\n");
+
+ if (!enabled)
+ return sysfs_emit(buf, "\n");
+ return sysfs_emit(buf, "%lld\n", msec);
}
static DEVICE_ATTR_RO(wakeup_total_time_ms);
@@ -451,7 +473,7 @@ static DEVICE_ATTR_RO(wakeup_total_time_ms);
static ssize_t wakeup_max_time_ms_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- s64 msec = 0;
+ s64 msec;
bool enabled = false;
spin_lock_irq(&dev->power.lock);
@@ -460,7 +482,10 @@ static ssize_t wakeup_max_time_ms_show(struct device *dev,
enabled = true;
}
spin_unlock_irq(&dev->power.lock);
- return enabled ? sprintf(buf, "%lld\n", msec) : sprintf(buf, "\n");
+
+ if (!enabled)
+ return sysfs_emit(buf, "\n");
+ return sysfs_emit(buf, "%lld\n", msec);
}
static DEVICE_ATTR_RO(wakeup_max_time_ms);
@@ -469,7 +494,7 @@ static ssize_t wakeup_last_time_ms_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- s64 msec = 0;
+ s64 msec;
bool enabled = false;
spin_lock_irq(&dev->power.lock);
@@ -478,7 +503,10 @@ static ssize_t wakeup_last_time_ms_show(struct device *dev,
enabled = true;
}
spin_unlock_irq(&dev->power.lock);
- return enabled ? sprintf(buf, "%lld\n", msec) : sprintf(buf, "\n");
+
+ if (!enabled)
+ return sysfs_emit(buf, "\n");
+ return sysfs_emit(buf, "%lld\n", msec);
}
static inline int dpm_sysfs_wakeup_change_owner(struct device *dev, kuid_t kuid,
@@ -496,7 +524,7 @@ static ssize_t wakeup_prevent_sleep_time_ms_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- s64 msec = 0;
+ s64 msec;
bool enabled = false;
spin_lock_irq(&dev->power.lock);
@@ -505,7 +533,10 @@ static ssize_t wakeup_prevent_sleep_time_ms_show(struct device *dev,
enabled = true;
}
spin_unlock_irq(&dev->power.lock);
- return enabled ? sprintf(buf, "%lld\n", msec) : sprintf(buf, "\n");
+
+ if (!enabled)
+ return sysfs_emit(buf, "\n");
+ return sysfs_emit(buf, "%lld\n", msec);
}
static DEVICE_ATTR_RO(wakeup_prevent_sleep_time_ms);
@@ -522,7 +553,7 @@ static inline int dpm_sysfs_wakeup_change_owner(struct device *dev, kuid_t kuid,
static ssize_t runtime_usage_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- return sprintf(buf, "%d\n", atomic_read(&dev->power.usage_count));
+ return sysfs_emit(buf, "%d\n", atomic_read(&dev->power.usage_count));
}
static DEVICE_ATTR_RO(runtime_usage);
@@ -530,21 +561,26 @@ static ssize_t runtime_active_kids_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- return sprintf(buf, "%d\n", dev->power.ignore_children ?
- 0 : atomic_read(&dev->power.child_count));
+ return sysfs_emit(buf, "%d\n", dev->power.ignore_children ?
+ 0 : atomic_read(&dev->power.child_count));
}
static DEVICE_ATTR_RO(runtime_active_kids);
static ssize_t runtime_enabled_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- if (dev->power.disable_depth && (dev->power.runtime_auto == false))
- return sprintf(buf, "disabled & forbidden\n");
- if (dev->power.disable_depth)
- return sprintf(buf, "disabled\n");
- if (dev->power.runtime_auto == false)
- return sprintf(buf, "forbidden\n");
- return sprintf(buf, "enabled\n");
+ const char *output;
+
+ if (dev->power.disable_depth && !dev->power.runtime_auto)
+ output = "disabled & forbidden";
+ else if (dev->power.disable_depth)
+ output = "disabled";
+ else if (!dev->power.runtime_auto)
+ output = "forbidden";
+ else
+ output = "enabled";
+
+ return sysfs_emit(buf, "%s\n", output);
}
static DEVICE_ATTR_RO(runtime_enabled);
@@ -552,9 +588,9 @@ static DEVICE_ATTR_RO(runtime_enabled);
static ssize_t async_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
- return sprintf(buf, "%s\n",
- device_async_suspend_enabled(dev) ?
- _enabled : _disabled);
+ return sysfs_emit(buf, "%s\n",
+ device_async_suspend_enabled(dev) ?
+ _enabled : _disabled);
}
static ssize_t async_store(struct device *dev, struct device_attribute *attr,
diff --git a/drivers/base/power/wakeup_stats.c b/drivers/base/power/wakeup_stats.c
index c7734914d914..d638259b829a 100644
--- a/drivers/base/power/wakeup_stats.c
+++ b/drivers/base/power/wakeup_stats.c
@@ -26,7 +26,7 @@ static ssize_t _name##_show(struct device *dev, \
{ \
struct wakeup_source *ws = dev_get_drvdata(dev); \
\
- return sprintf(buf, "%lu\n", ws->_name); \
+ return sysfs_emit(buf, "%lu\n", ws->_name); \
} \
static DEVICE_ATTR_RO(_name)
@@ -42,7 +42,7 @@ static ssize_t active_time_ms_show(struct device *dev,
ktime_t active_time =
ws->active ? ktime_sub(ktime_get(), ws->last_time) : 0;
- return sprintf(buf, "%lld\n", ktime_to_ms(active_time));
+ return sysfs_emit(buf, "%lld\n", ktime_to_ms(active_time));
}
static DEVICE_ATTR_RO(active_time_ms);
@@ -57,7 +57,8 @@ static ssize_t total_time_ms_show(struct device *dev,
active_time = ktime_sub(ktime_get(), ws->last_time);
total_time = ktime_add(total_time, active_time);
}
- return sprintf(buf, "%lld\n", ktime_to_ms(total_time));
+
+ return sysfs_emit(buf, "%lld\n", ktime_to_ms(total_time));
}
static DEVICE_ATTR_RO(total_time_ms);
@@ -73,7 +74,8 @@ static ssize_t max_time_ms_show(struct device *dev,
if (active_time > max_time)
max_time = active_time;
}
- return sprintf(buf, "%lld\n", ktime_to_ms(max_time));
+
+ return sysfs_emit(buf, "%lld\n", ktime_to_ms(max_time));
}
static DEVICE_ATTR_RO(max_time_ms);
@@ -82,7 +84,7 @@ static ssize_t last_change_ms_show(struct device *dev,
{
struct wakeup_source *ws = dev_get_drvdata(dev);
- return sprintf(buf, "%lld\n", ktime_to_ms(ws->last_time));
+ return sysfs_emit(buf, "%lld\n", ktime_to_ms(ws->last_time));
}
static DEVICE_ATTR_RO(last_change_ms);
@@ -91,7 +93,7 @@ static ssize_t name_show(struct device *dev, struct device_attribute *attr,
{
struct wakeup_source *ws = dev_get_drvdata(dev);
- return sprintf(buf, "%s\n", ws->name);
+ return sysfs_emit(buf, "%s\n", ws->name);
}
static DEVICE_ATTR_RO(name);
@@ -106,7 +108,8 @@ static ssize_t prevent_suspend_time_ms_show(struct device *dev,
prevent_sleep_time = ktime_add(prevent_sleep_time,
ktime_sub(ktime_get(), ws->start_prevent_time));
}
- return sprintf(buf, "%lld\n", ktime_to_ms(prevent_sleep_time));
+
+ return sysfs_emit(buf, "%lld\n", ktime_to_ms(prevent_sleep_time));
}
static DEVICE_ATTR_RO(prevent_suspend_time_ms);
diff --git a/drivers/base/property.c b/drivers/base/property.c
index d58aa98fe964..4c43d30145c6 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -1184,3 +1184,76 @@ const void *device_get_match_data(struct device *dev)
return fwnode_call_ptr_op(dev_fwnode(dev), device_get_match_data, dev);
}
EXPORT_SYMBOL_GPL(device_get_match_data);
+
+static void *
+fwnode_graph_devcon_match(struct fwnode_handle *fwnode, const char *con_id,
+ void *data, devcon_match_fn_t match)
+{
+ struct fwnode_handle *node;
+ struct fwnode_handle *ep;
+ void *ret;
+
+ fwnode_graph_for_each_endpoint(fwnode, ep) {
+ node = fwnode_graph_get_remote_port_parent(ep);
+ if (!fwnode_device_is_available(node))
+ continue;
+
+ ret = match(node, con_id, data);
+ fwnode_handle_put(node);
+ if (ret) {
+ fwnode_handle_put(ep);
+ return ret;
+ }
+ }
+ return NULL;
+}
+
+static void *
+fwnode_devcon_match(struct fwnode_handle *fwnode, const char *con_id,
+ void *data, devcon_match_fn_t match)
+{
+ struct fwnode_handle *node;
+ void *ret;
+ int i;
+
+ for (i = 0; ; i++) {
+ node = fwnode_find_reference(fwnode, con_id, i);
+ if (IS_ERR(node))
+ break;
+
+ ret = match(node, NULL, data);
+ fwnode_handle_put(node);
+ if (ret)
+ return ret;
+ }
+
+ return NULL;
+}
+
+/**
+ * fwnode_connection_find_match - Find connection from a device node
+ * @fwnode: Device node with the connection
+ * @con_id: Identifier for the connection
+ * @data: Data for the match function
+ * @match: Function to check and convert the connection description
+ *
+ * Find a connection with unique identifier @con_id between @fwnode and another
+ * device node. @match will be used to convert the connection description to
+ * data the caller is expecting to be returned.
+ */
+void *fwnode_connection_find_match(struct fwnode_handle *fwnode,
+ const char *con_id, void *data,
+ devcon_match_fn_t match)
+{
+ void *ret;
+
+ if (!fwnode || !match)
+ return NULL;
+
+ ret = fwnode_graph_devcon_match(fwnode, con_id, data, match);
+ if (ret)
+ return ret;
+
+ return fwnode_devcon_match(fwnode, con_id, data, match);
+}
+EXPORT_SYMBOL_GPL(fwnode_connection_find_match);
diff --git a/drivers/base/soc.c b/drivers/base/soc.c
index a5bae551167d..d34609bb7386 100644
--- a/drivers/base/soc.c
+++ b/drivers/base/soc.c
@@ -17,9 +17,9 @@
static DEFINE_IDA(soc_ida);
-static ssize_t soc_info_get(struct device *dev,
- struct device_attribute *attr,
- char *buf);
+/* Prototype to allow declarations of DEVICE_ATTR(<foo>) before soc_info_show */
+static ssize_t soc_info_show(struct device *dev, struct device_attribute *attr,
+ char *buf);
struct soc_device {
struct device dev;
@@ -31,11 +31,11 @@ static struct bus_type soc_bus_type = {
.name = "soc",
};
-static DEVICE_ATTR(machine, S_IRUGO, soc_info_get, NULL);
-static DEVICE_ATTR(family, S_IRUGO, soc_info_get, NULL);
-static DEVICE_ATTR(serial_number, S_IRUGO, soc_info_get, NULL);
-static DEVICE_ATTR(soc_id, S_IRUGO, soc_info_get, NULL);
-static DEVICE_ATTR(revision, S_IRUGO, soc_info_get, NULL);
+static DEVICE_ATTR(machine, 0444, soc_info_show, NULL);
+static DEVICE_ATTR(family, 0444, soc_info_show, NULL);
+static DEVICE_ATTR(serial_number, 0444, soc_info_show, NULL);
+static DEVICE_ATTR(soc_id, 0444, soc_info_show, NULL);
+static DEVICE_ATTR(revision, 0444, soc_info_show, NULL);
struct device *soc_device_to_device(struct soc_device *soc_dev)
{
@@ -49,45 +49,41 @@ static umode_t soc_attribute_mode(struct kobject *kobj,
struct device *dev = kobj_to_dev(kobj);
struct soc_device *soc_dev = container_of(dev, struct soc_device, dev);
- if ((attr == &dev_attr_machine.attr)
- && (soc_dev->attr->machine != NULL))
+ if ((attr == &dev_attr_machine.attr) && soc_dev->attr->machine)
return attr->mode;
- if ((attr == &dev_attr_family.attr)
- && (soc_dev->attr->family != NULL))
+ if ((attr == &dev_attr_family.attr) && soc_dev->attr->family)
return attr->mode;
- if ((attr == &dev_attr_revision.attr)
- && (soc_dev->attr->revision != NULL))
+ if ((attr == &dev_attr_revision.attr) && soc_dev->attr->revision)
return attr->mode;
- if ((attr == &dev_attr_serial_number.attr)
- && (soc_dev->attr->serial_number != NULL))
+ if ((attr == &dev_attr_serial_number.attr) && soc_dev->attr->serial_number)
return attr->mode;
- if ((attr == &dev_attr_soc_id.attr)
- && (soc_dev->attr->soc_id != NULL))
+ if ((attr == &dev_attr_soc_id.attr) && soc_dev->attr->soc_id)
return attr->mode;
- /* Unknown or unfilled attribute. */
+ /* Unknown or unfilled attribute */
return 0;
}
-static ssize_t soc_info_get(struct device *dev,
- struct device_attribute *attr,
- char *buf)
+static ssize_t soc_info_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
{
struct soc_device *soc_dev = container_of(dev, struct soc_device, dev);
+ const char *output;
if (attr == &dev_attr_machine)
- return sprintf(buf, "%s\n", soc_dev->attr->machine);
- if (attr == &dev_attr_family)
- return sprintf(buf, "%s\n", soc_dev->attr->family);
- if (attr == &dev_attr_revision)
- return sprintf(buf, "%s\n", soc_dev->attr->revision);
- if (attr == &dev_attr_serial_number)
- return sprintf(buf, "%s\n", soc_dev->attr->serial_number);
- if (attr == &dev_attr_soc_id)
- return sprintf(buf, "%s\n", soc_dev->attr->soc_id);
-
- return -EINVAL;
-
+ output = soc_dev->attr->machine;
+ else if (attr == &dev_attr_family)
+ output = soc_dev->attr->family;
+ else if (attr == &dev_attr_revision)
+ output = soc_dev->attr->revision;
+ else if (attr == &dev_attr_serial_number)
+ output = soc_dev->attr->serial_number;
+ else if (attr == &dev_attr_soc_id)
+ output = soc_dev->attr->soc_id;
+ else
+ return -EINVAL;
+
+ return sysfs_emit(buf, "%s\n", output);
}
static struct attribute *soc_attr[] = {
diff --git a/drivers/base/syscore.c b/drivers/base/syscore.c
index 0d346a307140..13db1f78d2ce 100644
--- a/drivers/base/syscore.c
+++ b/drivers/base/syscore.c
@@ -50,7 +50,7 @@ int syscore_suspend(void)
int ret = 0;
trace_suspend_resume(TPS("syscore_suspend"), 0, true);
- pr_debug("Checking wakeup interrupts\n");
+ pm_pr_dbg("Checking wakeup interrupts\n");
/* Return error code if there are any wakeup interrupts pending. */
if (pm_wakeup_pending())
@@ -61,8 +61,7 @@ int syscore_suspend(void)
list_for_each_entry_reverse(ops, &syscore_ops_list, node)
if (ops->suspend) {
- if (initcall_debug)
- pr_info("PM: Calling %pS\n", ops->suspend);
+ pm_pr_dbg("Calling %pS\n", ops->suspend);
ret = ops->suspend();
if (ret)
goto err_out;
@@ -99,8 +98,7 @@ void syscore_resume(void)
list_for_each_entry(ops, &syscore_ops_list, node)
if (ops->resume) {
- if (initcall_debug)
- pr_info("PM: Calling %pS\n", ops->resume);
+ pm_pr_dbg("Calling %pS\n", ops->resume);
ops->resume();
WARN_ONCE(!irqs_disabled(),
"Interrupts enabled after %pS\n", ops->resume);
diff --git a/drivers/base/topology.c b/drivers/base/topology.c
index ad8d33c6077b..4d254fcc93d1 100644
--- a/drivers/base/topology.c
+++ b/drivers/base/topology.c
@@ -14,11 +14,11 @@
#include <linux/hardirq.h>
#include <linux/topology.h>
-#define define_id_show_func(name) \
-static ssize_t name##_show(struct device *dev, \
- struct device_attribute *attr, char *buf) \
-{ \
- return sprintf(buf, "%d\n", topology_##name(dev->id)); \
+#define define_id_show_func(name) \
+static ssize_t name##_show(struct device *dev, \
+ struct device_attribute *attr, char *buf) \
+{ \
+ return sysfs_emit(buf, "%d\n", topology_##name(dev->id)); \
}
#define define_siblings_show_map(name, mask) \
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-30 19:09:09 +0300