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Fix syscall tracing argument input
[lttng-modules.git]
/
probes
/
lttng-ftrace.c
diff --git
a/probes/lttng-ftrace.c
b/probes/lttng-ftrace.c
index f583ab6ee9afd2c1d25cd23a657345f07e082137..476d6bce8e50600e0a6691317e3fd39d044c1c1b 100644
(file)
--- a/
probes/lttng-ftrace.c
+++ b/
probes/lttng-ftrace.c
@@
-36,9
+36,9
@@
void lttng_ftrace_handler(unsigned long ip, unsigned long parent_ip, void **data
if (!ACCESS_ONCE(chan->session->active))
return;
if (!ACCESS_ONCE(chan->session->active))
return;
- lib_ring_buffer_ctx_init(&ctx, chan->chan,
NULL
,
+ lib_ring_buffer_ctx_init(&ctx, chan->chan,
event
,
sizeof(payload), ltt_alignof(payload), -1);
sizeof(payload), ltt_alignof(payload), -1);
- ret = chan->ops->event_reserve(&ctx);
+ ret = chan->ops->event_reserve(&ctx
, event->id
);
if (ret < 0)
return;
payload.ip = ip;
if (ret < 0)
return;
payload.ip = ip;
@@
-78,7
+78,7
@@
int lttng_create_ftrace_event(const char *name, struct ltt_event *event)
fields[0].type.atype = atype_integer;
fields[0].type.u.basic.integer.size = sizeof(unsigned long) * CHAR_BIT;
fields[0].type.u.basic.integer.alignment = ltt_alignof(unsigned long) * CHAR_BIT;
fields[0].type.atype = atype_integer;
fields[0].type.u.basic.integer.size = sizeof(unsigned long) * CHAR_BIT;
fields[0].type.u.basic.integer.alignment = ltt_alignof(unsigned long) * CHAR_BIT;
- fields[0].type.u.basic.integer.signedness =
0
;
+ fields[0].type.u.basic.integer.signedness =
is_signed_type(unsigned long)
;
fields[0].type.u.basic.integer.reverse_byte_order = 0;
fields[0].type.u.basic.integer.base = 16;
fields[0].type.u.basic.integer.encoding = lttng_encode_none;
fields[0].type.u.basic.integer.reverse_byte_order = 0;
fields[0].type.u.basic.integer.base = 16;
fields[0].type.u.basic.integer.encoding = lttng_encode_none;
@@
-87,11
+87,12
@@
int lttng_create_ftrace_event(const char *name, struct ltt_event *event)
fields[1].type.atype = atype_integer;
fields[1].type.u.basic.integer.size = sizeof(unsigned long) * CHAR_BIT;
fields[1].type.u.basic.integer.alignment = ltt_alignof(unsigned long) * CHAR_BIT;
fields[1].type.atype = atype_integer;
fields[1].type.u.basic.integer.size = sizeof(unsigned long) * CHAR_BIT;
fields[1].type.u.basic.integer.alignment = ltt_alignof(unsigned long) * CHAR_BIT;
- fields[1].type.u.basic.integer.signedness =
0
;
+ fields[1].type.u.basic.integer.signedness =
is_signed_type(unsigned long)
;
fields[1].type.u.basic.integer.reverse_byte_order = 0;
fields[1].type.u.basic.integer.base = 16;
fields[1].type.u.basic.integer.encoding = lttng_encode_none;
fields[1].type.u.basic.integer.reverse_byte_order = 0;
fields[1].type.u.basic.integer.base = 16;
fields[1].type.u.basic.integer.encoding = lttng_encode_none;
+ desc->owner = THIS_MODULE;
event->desc = desc;
return 0;
event->desc = desc;
return 0;
@@
-118,7
+119,7
@@
int lttng_ftrace_register(const char *name,
if (ret)
goto error;
if (ret)
goto error;
- event->u.ftrace.symbol_name = kstrdup(name, GFP_KERNEL);
+ event->u.ftrace.symbol_name = kstrdup(
symbol_
name, GFP_KERNEL);
if (!event->u.ftrace.symbol_name)
goto name_error;
if (!event->u.ftrace.symbol_name)
goto name_error;
@@
-127,7
+128,7
@@
int lttng_ftrace_register(const char *name,
ret = wrapper_register_ftrace_function_probe(event->u.ftrace.symbol_name,
<tng_ftrace_ops, event);
ret = wrapper_register_ftrace_function_probe(event->u.ftrace.symbol_name,
<tng_ftrace_ops, event);
- if (ret)
+ if (ret
< 0
)
goto register_error;
return 0;
goto register_error;
return 0;
@@
-145,14
+146,18
@@
void lttng_ftrace_unregister(struct ltt_event *event)
{
wrapper_unregister_ftrace_function_probe(event->u.ftrace.symbol_name,
<tng_ftrace_ops, event);
{
wrapper_unregister_ftrace_function_probe(event->u.ftrace.symbol_name,
<tng_ftrace_ops, event);
+}
+EXPORT_SYMBOL_GPL(lttng_ftrace_unregister);
+
+void lttng_ftrace_destroy_private(struct ltt_event *event)
+{
kfree(event->u.ftrace.symbol_name);
kfree(event->u.ftrace.symbol_name);
- kfree(desc->fields);
+ kfree(
event->
desc->fields);
kfree(event->desc->name);
kfree(event->desc);
}
kfree(event->desc->name);
kfree(event->desc);
}
-EXPORT_SYMBOL_GPL(lttng_ftrace_
unregister
);
+EXPORT_SYMBOL_GPL(lttng_ftrace_
destroy_private
);
-/* This module is permanent. */
int lttng_ftrace_init(void)
{
wrapper_vmalloc_sync_all();
int lttng_ftrace_init(void)
{
wrapper_vmalloc_sync_all();
@@
-160,6
+165,15
@@
int lttng_ftrace_init(void)
}
module_init(lttng_ftrace_init)
}
module_init(lttng_ftrace_init)
+/*
+ * Ftrace takes care of waiting for a grace period (RCU sched) at probe
+ * unregistration, and disables preemption around probe call.
+ */
+void lttng_ftrace_exit(void)
+{
+}
+module_exit(lttng_ftrace_exit)
+
MODULE_LICENSE("GPL and additional rights");
MODULE_AUTHOR("Mathieu Desnoyers");
MODULE_DESCRIPTION("Linux Trace Toolkit Ftrace Support");
MODULE_LICENSE("GPL and additional rights");
MODULE_AUTHOR("Mathieu Desnoyers");
MODULE_DESCRIPTION("Linux Trace Toolkit Ftrace Support");
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