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Diffstat (limited to 'tapset/LKET/ioscheduler.stp')
-rwxr-xr-xtapset/LKET/ioscheduler.stp103
1 files changed, 28 insertions, 75 deletions
diff --git a/tapset/LKET/ioscheduler.stp b/tapset/LKET/ioscheduler.stp
index 4d68537c..462e3758 100755
--- a/tapset/LKET/ioscheduler.stp
+++ b/tapset/LKET/ioscheduler.stp
@@ -5,7 +5,6 @@
// Public License (GPL); either version 2, or (at your option) any
// later version.
-/* only print backtrace for elv_add_request & elv_next_request*/
probe addevent.ioscheduler
= addevent.ioscheduler.elv_next_request,
addevent.ioscheduler.elv_completed_request,
@@ -15,20 +14,20 @@ probe addevent.ioscheduler
/* when a request is retrieved from request queue */
probe addevent.ioscheduler.elv_next_request
- += ioscheduler.elv_next_request
+ = ioscheduler.elv_next_request
{
if(filter_by_pid() == 1 ) {
- log_ioscheduler_tracedata_elv_next(HOOKID_IOSCHED_NEXT_REQ, $q, backtrace)
+ log_ioscheduler_tracedata_elv_next(HOOKID_IOSCHED_NEXT_REQ, $q)
}
}
/* when a request is added to the request queue */
probe addevent.ioscheduler.elv_add_request
- += ioscheduler.elv_add_request
+ = ioscheduler.elv_add_request
{
if(filter_by_pid() == 1 ) {
- log_ioscheduler_tracedata_others(HOOKID_IOSCHED_ADD_REQ, $q, $rq, backtrace)
+ log_ioscheduler_tracedata_others(HOOKID_IOSCHED_ADD_REQ, $q, $rq)
}
}
@@ -37,7 +36,7 @@ probe addevent.ioscheduler.elv_completed_request
= ioscheduler.elv_completed_request
{
if(filter_by_pid() == 1 ) {
- log_ioscheduler_tracedata_others(HOOKID_IOSCHED_REMOVE_REQ, $q, $rq, backtrace)
+ log_ioscheduler_tracedata_others(HOOKID_IOSCHED_REMOVE_REQ, $q, $rq)
}
}
@@ -50,46 +49,29 @@ probe addevent.ioscheduler.elv_completed_request
/* log the data specific to __elv_add_request and elv_remove_request */
%( kernel_v >= "2.6.10" %?
-function log_ioscheduler_tracedata_others(var_id:long, var_q:long, var_rq:long, backtrace:long)
+function log_ioscheduler_tracedata_others(var_id:long, var_q:long, var_rq:long)
%{
struct request *rq = (struct request *)((long)THIS->var_rq);
struct request_queue *q = (struct request_queue *)((long)THIS->var_q);
/* elevator name|major|minor| */
- /* only print backtrace for elv_add_request */
- if(THIS->backtrace == 1) {
- String str = _stp_string_init (0);
- _stp_stack_sprint (str, CONTEXT->regs, 0);
-
- _lket_trace(_GROUP_IOSCHED, THIS->var_id, "%0s%1b%1b%0s", q->elevator->elevator_type->elevator_name,
- (_FMT_)rq->rq_disk->major, (_FMT_)rq->rq_disk->first_minor, _stp_string_ptr(str));
- } else {
- _lket_trace(_GROUP_IOSCHED, THIS->var_id, "%0s%1b%1b", q->elevator->elevator_type->elevator_name,
- (_FMT_)rq->rq_disk->major, (_FMT_)rq->rq_disk->first_minor);
- }
+ _lket_trace(_GROUP_IOSCHED, THIS->var_id, "%0s%1b%1b",
+ q->elevator->elevator_type->elevator_name,
+ (_FMT_)rq->rq_disk->major, (_FMT_)rq->rq_disk->first_minor);
%}
%:
-function log_ioscheduler_tracedata_others(var_id:long, var_q:long, var_rq:long, backtrace:long)
+function log_ioscheduler_tracedata_others(var_id:long, var_q:long, var_rq:long)
%{
struct request *rq = (struct request *)((long)THIS->var_rq);
struct request_queue *q = (struct request_queue *)((long)THIS->var_q);
/* elevator name|major|minor| */
- /* only print backtrace for elv_add_request */
- if(THIS->backtrace == 1) {
- String str = _stp_string_init (0);
- _stp_stack_sprint (str, CONTEXT->regs, 0);
-
- _lket_trace(_GROUP_IOSCHED, THIS->var_id, "%0s%1b%1b%0s", q->elevator.elevator_name,
- (_FMT_)rq->rq_disk->major, (_FMT_)rq->rq_disk->first_minor, _stp_string_ptr(str));
- } else {
- _lket_trace(_GROUP_IOSCHED, THIS->var_id, "%0s%1b%1b", q->elevator.elevator_name,
- (_FMT_)rq->rq_disk->major, (_FMT_)rq->rq_disk->first_minor);
- }
+ _lket_trace(_GROUP_IOSCHED, THIS->var_id, "%0s%1b%1b", q->elevator.elevator_name,
+ (_FMT_)rq->rq_disk->major, (_FMT_)rq->rq_disk->first_minor);
%}
%)
@@ -98,7 +80,7 @@ function log_ioscheduler_tracedata_others(var_id:long, var_q:long, var_rq:long,
%( kernel_v >= "2.6.10" %?
/* log the data specific to elv_next_request , for kernel > 2.6.9*/
-function log_ioscheduler_tracedata_elv_next(var_id:long, var:long, backtrace:long)
+function log_ioscheduler_tracedata_elv_next(var_id:long, var:long)
%{
struct request_queue *q;
@@ -112,36 +94,21 @@ function log_ioscheduler_tracedata_elv_next(var_id:long, var:long, backtrace:lon
elevator name|empty|
*/
- if(THIS->backtrace == 1) {
- String str = _stp_string_init (0);
- _stp_stack_sprint (str, CONTEXT->regs, 0);
-
- if(list_empty(&(q->queue_head))) {
- _lket_trace(_GROUP_IOSCHED, THIS->var_id, "%0s%1b%1b%0s",
- q->elevator->elevator_type->elevator_name, (_FMT_)-1, (_FMT_)-1, _stp_string_ptr(str));
- } else {
- rq = list_entry_rq(q->queue_head.next);
- _lket_trace(_GROUP_IOSCHED, THIS->var_id, "%0s%1b%1b%0s",
- q->elevator->elevator_type->elevator_name, (_FMT_)rq->rq_disk->major,
- (_FMT_)rq->rq_disk->first_minor, _stp_string_ptr(str));
- }
+ if(list_empty(&(q->queue_head))) {
+ _lket_trace(_GROUP_IOSCHED, THIS->var_id, "%0s%1b%1b",
+ q->elevator->elevator_type->elevator_name, (_FMT_)-1, (_FMT_)-1);
} else {
- if(list_empty(&(q->queue_head))) {
- _lket_trace(_GROUP_IOSCHED, THIS->var_id, "%0s%1b%1b",
- q->elevator->elevator_type->elevator_name, (_FMT_)-1, (_FMT_)-1);
- } else {
- rq = list_entry_rq(q->queue_head.next);
- _lket_trace(_GROUP_IOSCHED, THIS->var_id, "%0s%1b%1b",
- q->elevator->elevator_type->elevator_name, (_FMT_)rq->rq_disk->major,
- (_FMT_)rq->rq_disk->first_minor);
- }
-
+ rq = list_entry_rq(q->queue_head.next);
+ _lket_trace(_GROUP_IOSCHED, THIS->var_id, "%0s%1b%1b",
+ q->elevator->elevator_type->elevator_name, (_FMT_)rq->rq_disk->major,
+ (_FMT_)rq->rq_disk->first_minor);
}
+
%}
%:
-function log_ioscheduler_tracedata_elv_next(var_id:long, var:long, backtrace:long)
+function log_ioscheduler_tracedata_elv_next(var_id:long, var:long)
%{
struct request_queue *q;
@@ -154,27 +121,13 @@ function log_ioscheduler_tracedata_elv_next(var_id:long, var:long, backtrace:lon
if there is no request in the request queue:
elevator name|empty|
*/
- if(THIS->backtrace == 1) {
- String str = _stp_string_init (0);
- _stp_stack_sprint (str, CONTEXT->regs, 0);
-
- if(list_empty(&(q->queue_head))) {
- _lket_trace(_GROUP_IOSCHED, THIS->var_id, "%0s%1b%1b%0s",
- q->elevator.elevator_name, (_FMT_)-1, (_FMT_)-1, _stp_string_ptr(str));
- } else {
- rq = list_entry_rq(q->queue_head.next);
- _lket_trace(_GROUP_IOSCHED, THIS->var_id, "%0s%1b%1b%0s", q->elevator.elevator_name,
- (_FMT_)rq->rq_disk->major, (_FMT_)rq->rq_disk->first_minor, _stp_string_ptr(str));
- }
+ if(list_empty(&(q->queue_head))) {
+ _lket_trace(_GROUP_IOSCHED, THIS->var_id, "%0s%1b%1b",
+ q->elevator.elevator_name, (_FMT_)-1, (_FMT_)-1);
} else {
- if(list_empty(&(q->queue_head))) {
- _lket_trace(_GROUP_IOSCHED, THIS->var_id, "%0s%1b%1b",
- q->elevator.elevator_name, (_FMT_)-1, (_FMT_)-1);
- } else {
- rq = list_entry_rq(q->queue_head.next);
- _lket_trace(_GROUP_IOSCHED, THIS->var_id, "%0s%1b%1b", q->elevator.elevator_name,
- (_FMT_)rq->rq_disk->major, (_FMT_)rq->rq_disk->first_minor);
- }
+ rq = list_entry_rq(q->queue_head.next);
+ _lket_trace(_GROUP_IOSCHED, THIS->var_id, "%0s%1b%1b", q->elevator.elevator_name,
+ (_FMT_)rq->rq_disk->major, (_FMT_)rq->rq_disk->first_minor);
}
%}
generated by cgit (git 2.34.1) at 2025-08-05 15:10:05 +0000