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Date: Mon, 2 Nov 2015 14:58:16 +0900
From: Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
To: Stephen Rothwell <sfr@...b.auug.org.au>,
Steven Rostedt <rostedt@...dmis.org>
Cc: linux-next@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: linux-next: Tree for Nov 2
On (11/02/15 15:40), Stephen Rothwell wrote:
> Hi all,
>
> Changes since 20151101:
>
Hi,
unregister_trace_sched_switch/register_trace_prio_sched_switch/etc.
(see the log below. 80-cols unfriendly. sorry.)
expect proto to contain 'bool preempt'
TRACE_EVENT(sched_switch,
TP_PROTO(bool preempt,
struct task_struct *prev,
struct task_struct *next),
event_filter_pid_sched_switch_probe_post() and
event_filter_pid_sched_switch_probe_pre() are missing it.
which results in:
kernel/trace/trace_events.c: In function ‘__ftrace_clear_event_pids’:
kernel/trace/trace_events.c:579:32: warning: passing argument 1 of ‘unregister_trace_sched_switch’ from incompatible pointer type [-Wincompatible-pointer-types]
unregister_trace_sched_switch(event_filter_pid_sched_switch_probe_pre, tr);
^
In file included from include/trace/events/sched.h:8:0,
from kernel/trace/trace_events.c:25:
include/linux/tracepoint.h:223:2: note: expected ‘void (*)(void *, bool, struct task_struct *, struct task_struct *) {aka void (*)(void *, _Bool, struct task_struct *, struct task_struct *)}’ but argument is of type ‘void (*)(void *, struct task_struct *, struct task_struct *)’
unregister_trace_##name(void (*probe)(data_proto), void *data) \
^
include/linux/tracepoint.h:357:3: note: in expansion of macro ‘__DECLARE_TRACE’
__DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), 1, \
^
include/linux/tracepoint.h:491:2: note: in expansion of macro ‘DECLARE_TRACE’
DECLARE_TRACE(name, PARAMS(proto), PARAMS(args))
^
include/trace/events/sched.h:124:1: note: in expansion of macro ‘TRACE_EVENT’
TRACE_EVENT(sched_switch,
^
kernel/trace/trace_events.c:580:32: warning: passing argument 1 of ‘unregister_trace_sched_switch’ from incompatible pointer type [-Wincompatible-pointer-types]
unregister_trace_sched_switch(event_filter_pid_sched_switch_probe_post, tr);
^
In file included from include/trace/events/sched.h:8:0,
from kernel/trace/trace_events.c:25:
include/linux/tracepoint.h:223:2: note: expected ‘void (*)(void *, bool, struct task_struct *, struct task_struct *) {aka void (*)(void *, _Bool, struct task_struct *, struct task_struct *)}’ but argument is of type ‘void (*)(void *, struct task_struct *, struct task_struct *)’
unregister_trace_##name(void (*probe)(data_proto), void *data) \
^
include/linux/tracepoint.h:357:3: note: in expansion of macro ‘__DECLARE_TRACE’
__DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), 1, \
^
include/linux/tracepoint.h:491:2: note: in expansion of macro ‘DECLARE_TRACE’
DECLARE_TRACE(name, PARAMS(proto), PARAMS(args))
^
include/trace/events/sched.h:124:1: note: in expansion of macro ‘TRACE_EVENT’
TRACE_EVENT(sched_switch,
^
kernel/trace/trace_events.c: In function ‘ftrace_event_pid_write’:
kernel/trace/trace_events.c:1723:36: warning: passing argument 1 of ‘register_trace_prio_sched_switch’ from incompatible pointer type [-Wincompatible-pointer-types]
register_trace_prio_sched_switch(event_filter_pid_sched_switch_probe_pre,
^
In file included from include/trace/events/sched.h:8:0,
from kernel/trace/trace_events.c:25:
include/linux/tracepoint.h:216:2: note: expected ‘void (*)(void *, bool, struct task_struct *, struct task_struct *) {aka void (*)(void *, _Bool, struct task_struct *, struct task_struct *)}’ but argument is of type ‘void (*)(void *, struct task_struct *, struct task_struct *)’
register_trace_prio_##name(void (*probe)(data_proto), void *data,\
^
include/linux/tracepoint.h:357:3: note: in expansion of macro ‘__DECLARE_TRACE’
__DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), 1, \
^
include/linux/tracepoint.h:491:2: note: in expansion of macro ‘DECLARE_TRACE’
DECLARE_TRACE(name, PARAMS(proto), PARAMS(args))
^
include/trace/events/sched.h:124:1: note: in expansion of macro ‘TRACE_EVENT’
TRACE_EVENT(sched_switch,
^
kernel/trace/trace_events.c:1725:36: warning: passing argument 1 of ‘register_trace_prio_sched_switch’ from incompatible pointer type [-Wincompatible-pointer-types]
register_trace_prio_sched_switch(event_filter_pid_sched_switch_probe_post,
^
In file included from include/trace/events/sched.h:8:0,
from kernel/trace/trace_events.c:25:
include/linux/tracepoint.h:216:2: note: expected ‘void (*)(void *, bool, struct task_struct *, struct task_struct *) {aka void (*)(void *, _Bool, struct task_struct *, struct task_struct *)}’ but argument is of type ‘void (*)(void *, struct task_struct *, struct task_struct *)’
register_trace_prio_##name(void (*probe)(data_proto), void *data,\
^
include/linux/tracepoint.h:357:3: note: in expansion of macro ‘__DECLARE_TRACE’
__DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), 1, \
^
include/linux/tracepoint.h:491:2: note: in expansion of macro ‘DECLARE_TRACE’
DECLARE_TRACE(name, PARAMS(proto), PARAMS(args))
^
include/trace/events/sched.h:124:1: note: in expansion of macro ‘TRACE_EVENT’
TRACE_EVENT(sched_switch,
something like this, I guess.
===8<===8<===8<===8<===
Add missing 'bool preempt' argument as required by
sched_switch's trace event proto:
: TRACE_EVENT(sched_switch,
:
: TP_PROTO(bool preempt,
: struct task_struct *prev,
: struct task_struct *next),
...
to event_filter_pid_sched_switch_probe_post() and
event_filter_pid_sched_switch_probe_pre() functions.
kernel/trace/trace_events.c: In function ‘__ftrace_clear_event_pids’:
kernel/trace/trace_events.c:579:32: warning: passing argument 1 of
‘unregister_trace_sched_switch’ from incompatible pointer type
[-Wincompatible-pointer-types]
unregister_trace_sched_switch(event_filter_pid_sched_switch_probe_pre, tr);
^
In file included from include/trace/events/sched.h:8:0,
from kernel/trace/trace_events.c:25:
include/linux/tracepoint.h:223:2: note: expected
‘void (*)(void *, bool, struct task_struct *, struct task_struct *)
{aka void (*)(void *, _Bool, struct task_struct *, struct task_struct *)}’
but argument is of type
‘void (*)(void *, struct task_struct *, struct task_struct *)’
unregister_trace_##name(void (*probe)(data_proto), void *data) \
^
include/linux/tracepoint.h:357:3: note: in expansion of macro ‘__DECLARE_TRACE’
__DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), 1, \
^
include/linux/tracepoint.h:491:2: note: in expansion of macro ‘DECLARE_TRACE’
DECLARE_TRACE(name, PARAMS(proto), PARAMS(args))
^
include/trace/events/sched.h:124:1: note: in expansion of macro ‘TRACE_EVENT’
TRACE_EVENT(sched_switch,
^
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@...il.com>
---
kernel/trace/trace_events.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index fb0261e..0d86f0c 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -506,7 +506,7 @@ check_ignore_pid(struct trace_pid_list *filtered_pids, struct task_struct *task)
}
static void
-event_filter_pid_sched_switch_probe_pre(void *data,
+event_filter_pid_sched_switch_probe_pre(void *data, bool preempt,
struct task_struct *prev, struct task_struct *next)
{
struct trace_array *tr = data;
@@ -520,7 +520,7 @@ event_filter_pid_sched_switch_probe_pre(void *data,
}
static void
-event_filter_pid_sched_switch_probe_post(void *data,
+event_filter_pid_sched_switch_probe_post(void *data, bool preempt,
struct task_struct *prev, struct task_struct *next)
{
struct trace_array *tr = data;
--
2.6.2.402.g2635c2b
--
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