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rv: Convert to use __free 

Convert to use __free to tidy up the code.

Signed-off-by: Nam Cao <namcao@linutronix.de>
Reviewed-by: Gabriele Monaco <gmonaco@redhat.com>
Link: https://lore.kernel.org/r/62854e2fcb8f8dd2180a98a9700702dcf89a6980.1763370183.git.namcao@linutronix.de
Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>
This commit is contained in:
Nam Cao 2025-11-17 09:06:03 +00:00 committed by Gabriele Monaco
parent 8db3790c4d
commit b30f635bb6
4 changed files with 46 additions and 58 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

65
kernel/trace/rv/rv.c
View File

@ -420,35 +420,27 @@ static const struct file_operations interface_desc_fops = {
static int create_monitor_dir(struct rv_monitor *mon, struct rv_monitor *parent)
{
struct dentry *root = parent ? parent->root_d : get_monitors_root();
const char *name = mon->name;
struct dentry *dir __free(rv_remove) = rv_create_dir(mon->name, root);
struct dentry *tmp;
int retval;
mon->root_d = rv_create_dir(name, root);
if (!mon->root_d)
if (!dir)
return -ENOMEM;
tmp = rv_create_file("enable", RV_MODE_WRITE, mon->root_d, mon, &interface_enable_fops);
if (!tmp) {
retval = -ENOMEM;
goto out_remove_root;
}
tmp = rv_create_file("enable", RV_MODE_WRITE, dir, mon, &interface_enable_fops);
if (!tmp)
return -ENOMEM;
tmp = rv_create_file("desc", RV_MODE_READ, mon->root_d, mon, &interface_desc_fops);
if (!tmp) {
retval = -ENOMEM;
goto out_remove_root;
}
tmp = rv_create_file("desc", RV_MODE_READ, dir, mon, &interface_desc_fops);
if (!tmp)
return -ENOMEM;
retval = reactor_populate_monitor(mon);
retval = reactor_populate_monitor(mon, dir);
if (retval)
goto out_remove_root;
return 0;
out_remove_root:
rv_remove(mon->root_d);
return retval;
mon->root_d = no_free_ptr(dir);
return 0;
}
/*
@ -827,39 +819,36 @@ int __init rv_init_interface(void)
{
struct dentry *tmp;
int retval;
struct dentry *root_dir __free(rv_remove) = rv_create_dir("rv", NULL);
rv_root.root_dir = rv_create_dir("rv", NULL);
if (!rv_root.root_dir)
goto out_err;
if (!root_dir)
return 1;
rv_root.monitors_dir = rv_create_dir("monitors", rv_root.root_dir);
rv_root.monitors_dir = rv_create_dir("monitors", root_dir);
if (!rv_root.monitors_dir)
goto out_err;
return 1;
tmp = rv_create_file("available_monitors", RV_MODE_READ, rv_root.root_dir, NULL,
tmp = rv_create_file("available_monitors", RV_MODE_READ, root_dir, NULL,
&available_monitors_ops);
if (!tmp)
goto out_err;
return 1;
tmp = rv_create_file("enabled_monitors", RV_MODE_WRITE, rv_root.root_dir, NULL,
tmp = rv_create_file("enabled_monitors", RV_MODE_WRITE, root_dir, NULL,
&enabled_monitors_ops);
if (!tmp)
goto out_err;
return 1;
tmp = rv_create_file("monitoring_on", RV_MODE_WRITE, rv_root.root_dir, NULL,
tmp = rv_create_file("monitoring_on", RV_MODE_WRITE, root_dir, NULL,
&monitoring_on_fops);
if (!tmp)
goto out_err;
retval = init_rv_reactors(rv_root.root_dir);
return 1;
retval = init_rv_reactors(root_dir);
if (retval)
goto out_err;
return 1;
turn_monitoring_on();
return 0;
rv_root.root_dir = no_free_ptr(root_dir);
out_err:
rv_remove(rv_root.root_dir);
printk(KERN_ERR "RV: Error while creating the RV interface\n");
return 1;
return 0;
}

6
kernel/trace/rv/rv.h
View File

@ -17,6 +17,8 @@ struct rv_interface {
#define rv_create_file tracefs_create_file
#define rv_remove tracefs_remove
DEFINE_FREE(rv_remove, struct dentry *, if (_T) rv_remove(_T));
#define MAX_RV_MONITOR_NAME_SIZE 32
#define MAX_RV_REACTOR_NAME_SIZE 32
@ -30,10 +32,10 @@ bool rv_is_container_monitor(struct rv_monitor *mon);
bool rv_is_nested_monitor(struct rv_monitor *mon);
#ifdef CONFIG_RV_REACTORS
int reactor_populate_monitor(struct rv_monitor *mon);
int reactor_populate_monitor(struct rv_monitor *mon, struct dentry *root);
int init_rv_reactors(struct dentry *root_dir);
#else
static inline int reactor_populate_monitor(struct rv_monitor *mon)
static inline int reactor_populate_monitor(struct rv_monitor *mon, struct dentry *root)
{
return 0;
}

32
kernel/trace/rv/rv_reactors.c
View File

@ -405,14 +405,15 @@ static const struct file_operations reacting_on_fops = {
/**
* reactor_populate_monitor - creates per monitor reactors file
* @mon: The monitor.
* @root: The directory of the monitor.
*
* Returns 0 if successful, error otherwise.
*/
int reactor_populate_monitor(struct rv_monitor *mon)
int reactor_populate_monitor(struct rv_monitor *mon, struct dentry *root)
{
struct dentry *tmp;
tmp = rv_create_file("reactors", RV_MODE_WRITE, mon->root_d, mon, &monitor_reactors_ops);
tmp = rv_create_file("reactors", RV_MODE_WRITE, root, mon, &monitor_reactors_ops);
if (!tmp)
return -ENOMEM;
@ -439,32 +440,27 @@ static struct rv_reactor rv_nop = {
int init_rv_reactors(struct dentry *root_dir)
{
struct dentry *available, *reacting;
int retval;
available = rv_create_file("available_reactors", RV_MODE_READ, root_dir, NULL,
&available_reactors_ops);
if (!available)
goto out_err;
struct dentry *available __free(rv_remove) =
rv_create_file("available_reactors", RV_MODE_READ, root_dir,
NULL, &available_reactors_ops);
reacting = rv_create_file("reacting_on", RV_MODE_WRITE, root_dir, NULL, &reacting_on_fops);
if (!reacting)
goto rm_available;
struct dentry *reacting __free(rv_remove) =
rv_create_file("reacting_on", RV_MODE_WRITE, root_dir, NULL, &reacting_on_fops);
if (!reacting || !available)
return -ENOMEM;
retval = __rv_register_reactor(&rv_nop);
if (retval)
goto rm_reacting;
return retval;
turn_reacting_on();
retain_and_null_ptr(available);
retain_and_null_ptr(reacting);
return 0;
rm_reacting:
rv_remove(reacting);
rm_available:
rv_remove(available);
out_err:
return -ENOMEM;
}
void rv_react(struct rv_monitor *monitor, const char *msg, ...)

3
kernel/trace/trace.c
View File

@ -10640,7 +10640,8 @@ static __init int tracer_init_tracefs(void)
tracer_init_tracefs_work_func(NULL);
}
rv_init_interface();
if (rv_init_interface())
pr_err("RV: Error while creating the RV interface\n");
return 0;
}