init_irq_work(&tr->fsnotify_irqwork, latency_fsnotify_workfn_irq);
tr->d_max_latency = trace_create_file("tracing_max_latency",
TRACE_MODE_WRITE,
- d_tracer, &tr->max_latency,
+ d_tracer, tr,
&tracing_max_lat_fops);
}
#define trace_create_maxlat_file(tr, d_tracer) \
trace_create_file("tracing_max_latency", TRACE_MODE_WRITE, \
- d_tracer, &tr->max_latency, &tracing_max_lat_fops)
+ d_tracer, tr, &tracing_max_lat_fops)
#endif
return 0;
}
+ /*
+ * The private pointer of the inode is the trace_event_file.
+ * Update the tr ref count associated to it.
+ */
+ int tracing_open_file_tr(struct inode *inode, struct file *filp)
+ {
+ struct trace_event_file *file = inode->i_private;
+ int ret;
+
+ ret = tracing_check_open_get_tr(file->tr);
+ if (ret)
+ return ret;
+
+ filp->private_data = inode->i_private;
+
+ return 0;
+ }
+
+ int tracing_release_file_tr(struct inode *inode, struct file *filp)
+ {
+ struct trace_event_file *file = inode->i_private;
+
+ trace_array_put(file->tr);
+
+ return 0;
+ }
+
static int tracing_mark_open(struct inode *inode, struct file *filp)
{
stream_open(inode, filp);
"\t fetcharg: (%<register>|$<efield>), @<address>, @<symbol>[+|-<offset>],\n"
#ifdef CONFIG_HAVE_FUNCTION_ARG_ACCESS_API
#ifdef CONFIG_PROBE_EVENTS_BTF_ARGS
- "\t $stack<index>, $stack, $retval, $comm, $arg<N>, <argname>\n"
+ "\t $stack<index>, $stack, $retval, $comm, $arg<N>,\n"
+ "\t <argname>[->field[->field|.field...]],\n"
#else
"\t $stack<index>, $stack, $retval, $comm, $arg<N>,\n"
#endif
tracing_max_lat_read(struct file *filp, char __user *ubuf,
size_t cnt, loff_t *ppos)
{
- return tracing_nsecs_read(filp->private_data, ubuf, cnt, ppos);
+ struct trace_array *tr = filp->private_data;
+
+ return tracing_nsecs_read(&tr->max_latency, ubuf, cnt, ppos);
}
static ssize_t
tracing_max_lat_write(struct file *filp, const char __user *ubuf,
size_t cnt, loff_t *ppos)
{
- return tracing_nsecs_write(filp->private_data, ubuf, cnt, ppos);
+ struct trace_array *tr = filp->private_data;
+
+ return tracing_nsecs_write(&tr->max_latency, ubuf, cnt, ppos);
}
#endif
#ifdef CONFIG_TRACER_MAX_TRACE
static const struct file_operations tracing_max_lat_fops = {
- .open = tracing_open_generic,
+ .open = tracing_open_generic_tr,
.read = tracing_max_lat_read,
.write = tracing_max_lat_write,
.llseek = generic_file_llseek,
+ .release = tracing_release_generic_tr,
};
#endif
static const struct file_operations set_tracer_fops = {
- .open = tracing_open_generic,
+ .open = tracing_open_generic_tr,
.read = tracing_set_trace_read,
.write = tracing_set_trace_write,
.llseek = generic_file_llseek,
+ .release = tracing_release_generic_tr,
};
static const struct file_operations tracing_pipe_fops = {
return cnt;
}
+ static int tracing_open_options(struct inode *inode, struct file *filp)
+ {
+ struct trace_option_dentry *topt = inode->i_private;
+ int ret;
+
+ ret = tracing_check_open_get_tr(topt->tr);
+ if (ret)
+ return ret;
+
+ filp->private_data = inode->i_private;
+ return 0;
+ }
+
+ static int tracing_release_options(struct inode *inode, struct file *file)
+ {
+ struct trace_option_dentry *topt = file->private_data;
+
+ trace_array_put(topt->tr);
+ return 0;
+ }
static const struct file_operations trace_options_fops = {
- .open = tracing_open_generic,
+ .open = tracing_open_options,
.read = trace_options_read,
.write = trace_options_write,
.llseek = generic_file_llseek,
+ .release = tracing_release_options,
};
/*
tr, &tracing_mark_fops);
file = __find_event_file(tr, "ftrace", "print");
- if (file && file->dir)
- trace_create_file("trigger", TRACE_MODE_WRITE, file->dir,
+ if (file && file->ef)
+ eventfs_add_file("trigger", TRACE_MODE_WRITE, file->ef,
file, &event_trigger_fops);
tr->trace_marker_file = file;