*/
struct trace_uprobe {
struct list_head list;
- struct ftrace_event_class class;
- struct ftrace_event_call call;
struct trace_uprobe_filter filter;
struct uprobe_consumer consumer;
struct inode *inode;
char *filename;
unsigned long offset;
unsigned long nhit;
- unsigned int flags; /* For TP_FLAG_* */
- ssize_t size; /* trace entry size */
- unsigned int nr_args;
- struct probe_arg args[];
+ struct trace_probe tp;
};
-#define SIZEOF_TRACE_UPROBE(n) \
- (offsetof(struct trace_uprobe, args) + \
+#define SIZEOF_TRACE_UPROBE(n) \
+ (offsetof(struct trace_uprobe, tp.args) + \
(sizeof(struct probe_arg) * (n)))
static int register_uprobe_event(struct trace_uprobe *tu);
if (!tu)
return ERR_PTR(-ENOMEM);
- tu->call.class = &tu->class;
- tu->call.name = kstrdup(event, GFP_KERNEL);
- if (!tu->call.name)
+ tu->tp.call.class = &tu->tp.class;
+ tu->tp.call.name = kstrdup(event, GFP_KERNEL);
+ if (!tu->tp.call.name)
goto error;
- tu->class.system = kstrdup(group, GFP_KERNEL);
- if (!tu->class.system)
+ tu->tp.class.system = kstrdup(group, GFP_KERNEL);
+ if (!tu->tp.class.system)
goto error;
INIT_LIST_HEAD(&tu->list);
if (is_ret)
tu->consumer.ret_handler = uretprobe_dispatcher;
init_trace_uprobe_filter(&tu->filter);
- tu->call.flags |= TRACE_EVENT_FL_USE_CALL_FILTER;
+ tu->tp.call.flags |= TRACE_EVENT_FL_USE_CALL_FILTER;
return tu;
error:
- kfree(tu->call.name);
+ kfree(tu->tp.call.name);
kfree(tu);
return ERR_PTR(-ENOMEM);
{
int i;
- for (i = 0; i < tu->nr_args; i++)
- traceprobe_free_probe_arg(&tu->args[i]);
+ for (i = 0; i < tu->tp.nr_args; i++)
+ traceprobe_free_probe_arg(&tu->tp.args[i]);
iput(tu->inode);
- kfree(tu->call.class->system);
- kfree(tu->call.name);
+ kfree(tu->tp.call.class->system);
+ kfree(tu->tp.call.name);
kfree(tu->filename);
kfree(tu);
}
struct trace_uprobe *tu;
list_for_each_entry(tu, &uprobe_list, list)
- if (strcmp(tu->call.name, event) == 0 &&
- strcmp(tu->call.class->system, group) == 0)
+ if (strcmp(tu->tp.call.name, event) == 0 &&
+ strcmp(tu->tp.call.class->system, group) == 0)
return tu;
return NULL;
/* Register a trace_uprobe and probe_event */
static int register_trace_uprobe(struct trace_uprobe *tu)
{
- struct trace_uprobe *old_tp;
+ struct trace_uprobe *old_tu;
int ret;
mutex_lock(&uprobe_lock);
/* register as an event */
- old_tp = find_probe_event(tu->call.name, tu->call.class->system);
- if (old_tp) {
+ old_tu = find_probe_event(tu->tp.call.name, tu->tp.call.class->system);
+ if (old_tu) {
/* delete old event */
- ret = unregister_trace_uprobe(old_tp);
+ ret = unregister_trace_uprobe(old_tu);
if (ret)
goto end;
}
/* parse arguments */
ret = 0;
for (i = 0; i < argc && i < MAX_TRACE_ARGS; i++) {
+ struct probe_arg *parg = &tu->tp.args[i];
+
/* Increment count for freeing args in error case */
- tu->nr_args++;
+ tu->tp.nr_args++;
/* Parse argument name */
arg = strchr(argv[i], '=');
if (arg) {
*arg++ = '\0';
- tu->args[i].name = kstrdup(argv[i], GFP_KERNEL);
+ parg->name = kstrdup(argv[i], GFP_KERNEL);
} else {
arg = argv[i];
/* If argument name is omitted, set "argN" */
snprintf(buf, MAX_EVENT_NAME_LEN, "arg%d", i + 1);
- tu->args[i].name = kstrdup(buf, GFP_KERNEL);
+ parg->name = kstrdup(buf, GFP_KERNEL);
}
- if (!tu->args[i].name) {
+ if (!parg->name) {
pr_info("Failed to allocate argument[%d] name.\n", i);
ret = -ENOMEM;
goto error;
}
- if (!is_good_name(tu->args[i].name)) {
- pr_info("Invalid argument[%d] name: %s\n", i, tu->args[i].name);
+ if (!is_good_name(parg->name)) {
+ pr_info("Invalid argument[%d] name: %s\n", i, parg->name);
ret = -EINVAL;
goto error;
}
- if (traceprobe_conflict_field_name(tu->args[i].name, tu->args, i)) {
+ if (traceprobe_conflict_field_name(parg->name, tu->tp.args, i)) {
pr_info("Argument[%d] name '%s' conflicts with "
"another field.\n", i, argv[i]);
ret = -EINVAL;
}
/* Parse fetch argument */
- ret = traceprobe_parse_probe_arg(arg, &tu->size, &tu->args[i], false, false);
+ ret = traceprobe_parse_probe_arg(arg, &tu->tp.size, parg,
+ false, false);
if (ret) {
pr_info("Parse error at argument[%d]. (%d)\n", i, ret);
goto error;
char c = is_ret_probe(tu) ? 'r' : 'p';
int i;
- seq_printf(m, "%c:%s/%s", c, tu->call.class->system, tu->call.name);
+ seq_printf(m, "%c:%s/%s", c, tu->tp.call.class->system, tu->tp.call.name);
seq_printf(m, " %s:0x%p", tu->filename, (void *)tu->offset);
- for (i = 0; i < tu->nr_args; i++)
- seq_printf(m, " %s=%s", tu->args[i].name, tu->args[i].comm);
+ for (i = 0; i < tu->tp.nr_args; i++)
+ seq_printf(m, " %s=%s", tu->tp.args[i].name, tu->tp.args[i].comm);
seq_printf(m, "\n");
return 0;
{
struct trace_uprobe *tu = v;
- seq_printf(m, " %s %-44s %15lu\n", tu->filename, tu->call.name, tu->nhit);
+ seq_printf(m, " %s %-44s %15lu\n", tu->filename, tu->tp.call.name, tu->nhit);
return 0;
}
struct ring_buffer *buffer;
void *data;
int size, i;
- struct ftrace_event_call *call = &tu->call;
+ struct ftrace_event_call *call = &tu->tp.call;
size = SIZEOF_TRACE_ENTRY(is_ret_probe(tu));
event = trace_current_buffer_lock_reserve(&buffer, call->event.type,
- size + tu->size, 0, 0);
+ size + tu->tp.size, 0, 0);
if (!event)
return;
data = DATAOF_TRACE_ENTRY(entry, false);
}
- for (i = 0; i < tu->nr_args; i++)
- call_fetch(&tu->args[i].fetch, regs, data + tu->args[i].offset);
+ for (i = 0; i < tu->tp.nr_args; i++) {
+ call_fetch(&tu->tp.args[i].fetch, regs,
+ data + tu->tp.args[i].offset);
+ }
if (!call_filter_check_discard(call, entry, buffer, event))
trace_buffer_unlock_commit(buffer, event, 0, 0);
int i;
entry = (struct uprobe_trace_entry_head *)iter->ent;
- tu = container_of(event, struct trace_uprobe, call.event);
+ tu = container_of(event, struct trace_uprobe, tp.call.event);
if (is_ret_probe(tu)) {
- if (!trace_seq_printf(s, "%s: (0x%lx <- 0x%lx)", tu->call.name,
+ if (!trace_seq_printf(s, "%s: (0x%lx <- 0x%lx)", tu->tp.call.name,
entry->vaddr[1], entry->vaddr[0]))
goto partial;
data = DATAOF_TRACE_ENTRY(entry, true);
} else {
- if (!trace_seq_printf(s, "%s: (0x%lx)", tu->call.name,
+ if (!trace_seq_printf(s, "%s: (0x%lx)", tu->tp.call.name,
entry->vaddr[0]))
goto partial;
data = DATAOF_TRACE_ENTRY(entry, false);
}
- for (i = 0; i < tu->nr_args; i++) {
- if (!tu->args[i].type->print(s, tu->args[i].name,
- data + tu->args[i].offset, entry))
+ for (i = 0; i < tu->tp.nr_args; i++) {
+ struct probe_arg *parg = &tu->tp.args[i];
+
+ if (!parg->type->print(s, parg->name, data + parg->offset, entry))
goto partial;
}
return TRACE_TYPE_PARTIAL_LINE;
}
-static inline bool is_trace_uprobe_enabled(struct trace_uprobe *tu)
-{
- return tu->flags & (TP_FLAG_TRACE | TP_FLAG_PROFILE);
-}
-
typedef bool (*filter_func_t)(struct uprobe_consumer *self,
enum uprobe_filter_ctx ctx,
struct mm_struct *mm);
{
int ret = 0;
- if (is_trace_uprobe_enabled(tu))
+ if (trace_probe_is_enabled(&tu->tp))
return -EINTR;
WARN_ON(!uprobe_filter_is_empty(&tu->filter));
- tu->flags |= flag;
+ tu->tp.flags |= flag;
tu->consumer.filter = filter;
ret = uprobe_register(tu->inode, tu->offset, &tu->consumer);
if (ret)
- tu->flags &= ~flag;
+ tu->tp.flags &= ~flag;
return ret;
}
static void probe_event_disable(struct trace_uprobe *tu, int flag)
{
- if (!is_trace_uprobe_enabled(tu))
+ if (!trace_probe_is_enabled(&tu->tp))
return;
WARN_ON(!uprobe_filter_is_empty(&tu->filter));
uprobe_unregister(tu->inode, tu->offset, &tu->consumer);
- tu->flags &= ~flag;
+ tu->tp.flags &= ~flag;
}
static int uprobe_event_define_fields(struct ftrace_event_call *event_call)
size = SIZEOF_TRACE_ENTRY(false);
}
/* Set argument names as fields */
- for (i = 0; i < tu->nr_args; i++) {
- ret = trace_define_field(event_call, tu->args[i].type->fmttype,
- tu->args[i].name,
- size + tu->args[i].offset,
- tu->args[i].type->size,
- tu->args[i].type->is_signed,
+ for (i = 0; i < tu->tp.nr_args; i++) {
+ struct probe_arg *parg = &tu->tp.args[i];
+
+ ret = trace_define_field(event_call, parg->type->fmttype,
+ parg->name, size + parg->offset,
+ parg->type->size, parg->type->is_signed,
FILTER_OTHER);
if (ret)
pos += snprintf(buf + pos, LEN_OR_ZERO, "\"%s", fmt);
- for (i = 0; i < tu->nr_args; i++) {
+ for (i = 0; i < tu->tp.nr_args; i++) {
pos += snprintf(buf + pos, LEN_OR_ZERO, " %s=%s",
- tu->args[i].name, tu->args[i].type->fmt);
+ tu->tp.args[i].name, tu->tp.args[i].type->fmt);
}
pos += snprintf(buf + pos, LEN_OR_ZERO, "\", %s", arg);
- for (i = 0; i < tu->nr_args; i++) {
+ for (i = 0; i < tu->tp.nr_args; i++) {
pos += snprintf(buf + pos, LEN_OR_ZERO, ", REC->%s",
- tu->args[i].name);
+ tu->tp.args[i].name);
}
return pos; /* return the length of print_fmt */
/* Second: actually write the @print_fmt */
__set_print_fmt(tu, print_fmt, len + 1);
- tu->call.print_fmt = print_fmt;
+ tu->tp.call.print_fmt = print_fmt;
return 0;
}
static void uprobe_perf_print(struct trace_uprobe *tu,
unsigned long func, struct pt_regs *regs)
{
- struct ftrace_event_call *call = &tu->call;
+ struct ftrace_event_call *call = &tu->tp.call;
struct uprobe_trace_entry_head *entry;
struct hlist_head *head;
void *data;
int size, rctx, i;
size = SIZEOF_TRACE_ENTRY(is_ret_probe(tu));
- size = ALIGN(size + tu->size + sizeof(u32), sizeof(u64)) - sizeof(u32);
+ size = ALIGN(size + tu->tp.size + sizeof(u32), sizeof(u64)) - sizeof(u32);
preempt_disable();
head = this_cpu_ptr(call->perf_events);
data = DATAOF_TRACE_ENTRY(entry, false);
}
- for (i = 0; i < tu->nr_args; i++)
- call_fetch(&tu->args[i].fetch, regs, data + tu->args[i].offset);
+ for (i = 0; i < tu->tp.nr_args; i++) {
+ struct probe_arg *parg = &tu->tp.args[i];
+
+ call_fetch(&parg->fetch, regs, data + parg->offset);
+ }
perf_trace_buf_submit(entry, size, rctx, 0, 1, regs, head, NULL);
out:
tu = container_of(con, struct trace_uprobe, consumer);
tu->nhit++;
- if (tu->flags & TP_FLAG_TRACE)
+ if (tu->tp.flags & TP_FLAG_TRACE)
ret |= uprobe_trace_func(tu, regs);
#ifdef CONFIG_PERF_EVENTS
- if (tu->flags & TP_FLAG_PROFILE)
+ if (tu->tp.flags & TP_FLAG_PROFILE)
ret |= uprobe_perf_func(tu, regs);
#endif
return ret;
tu = container_of(con, struct trace_uprobe, consumer);
- if (tu->flags & TP_FLAG_TRACE)
+ if (tu->tp.flags & TP_FLAG_TRACE)
uretprobe_trace_func(tu, func, regs);
#ifdef CONFIG_PERF_EVENTS
- if (tu->flags & TP_FLAG_PROFILE)
+ if (tu->tp.flags & TP_FLAG_PROFILE)
uretprobe_perf_func(tu, func, regs);
#endif
return 0;
static int register_uprobe_event(struct trace_uprobe *tu)
{
- struct ftrace_event_call *call = &tu->call;
+ struct ftrace_event_call *call = &tu->tp.call;
int ret;
/* Initialize ftrace_event_call */
int ret;
/* tu->event is unregistered in trace_remove_event_call() */
- ret = trace_remove_event_call(&tu->call);
+ ret = trace_remove_event_call(&tu->tp.call);
if (ret)
return ret;
- kfree(tu->call.print_fmt);
- tu->call.print_fmt = NULL;
+ kfree(tu->tp.call.print_fmt);
+ tu->tp.call.print_fmt = NULL;
return 0;
}
projects / ~andy / linux / blobdiff