projects
/
lttng-modules.git
/ blobdiff
commit
grep
author
committer
pickaxe
?
search:
re
summary
|
shortlog
|
log
|
commit
|
commitdiff
|
tree
raw
|
inline
| side by side
Add PIPE_DEF_BUFFERS to splice wrapper
[lttng-modules.git]
/
probes
/
lttng-ftrace.c
diff --git
a/probes/lttng-ftrace.c
b/probes/lttng-ftrace.c
index ec086902892d644fcee8c57f70d78231cc4944f2..1aa71831e86fd4bd21780278bb78d385f79ebc8b 100644
(file)
--- a/
probes/lttng-ftrace.c
+++ b/
probes/lttng-ftrace.c
@@
-11,6
+11,10
@@
* Ftrace function tracer does not seem to provide synchronization between probe
* teardown and callback execution. Therefore, we make this module permanently
* loaded (unloadable).
* Ftrace function tracer does not seem to provide synchronization between probe
* teardown and callback execution. Therefore, we make this module permanently
* loaded (unloadable).
+ *
+ * TODO: Move to register_ftrace_function() (which is exported for
+ * modules) for Linux >= 3.0. It is faster (only enables the selected
+ * functions), and will stay there.
*/
#include <linux/module.h>
*/
#include <linux/module.h>
@@
-34,9
+38,14
@@
void lttng_ftrace_handler(unsigned long ip, unsigned long parent_ip, void **data
} payload;
int ret;
} payload;
int ret;
- if (!ACCESS_ONCE(chan->session->active))
+ if (unlikely(!ACCESS_ONCE(chan->session->active)))
+ return;
+ if (unlikely(!ACCESS_ONCE(chan->enabled)))
return;
return;
- lib_ring_buffer_ctx_init(&ctx, chan->chan, NULL,
+ if (unlikely(!ACCESS_ONCE(event->enabled)))
+ return;
+
+ lib_ring_buffer_ctx_init(&ctx, chan->chan, event,
sizeof(payload), ltt_alignof(payload), -1);
ret = chan->ops->event_reserve(&ctx, event->id);
if (ret < 0)
sizeof(payload), ltt_alignof(payload), -1);
ret = chan->ops->event_reserve(&ctx, event->id);
if (ret < 0)
@@
-78,7
+87,7
@@
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;
@@
-87,7
+96,7
@@
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;
This page took
0.027479 seconds
and
4
git commands to generate.