tracing: Remove special traces
Special traces type was only used by sysprof. Lets remove it now
that sysprof ftrace plugin has been dropped.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Soeren Sandmann <sandmann@daimi.au.dk>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Li Zefan <lizf@cn.fujitsu.com>
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 8317ec4..adee958 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -508,9 +508,6 @@
extern void tracing_stop(void);
extern void ftrace_off_permanent(void);
-extern void
-ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3);
-
static inline void __attribute__ ((format (printf, 1, 2)))
____trace_printk_check_format(const char *fmt, ...)
{
@@ -586,8 +583,6 @@
extern void ftrace_dump(enum ftrace_dump_mode oops_dump_mode);
#else
-static inline void
-ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3) { }
static inline int
trace_printk(const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 747fcae..f751ea9 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -2434,18 +2434,6 @@
#endif /* CONFIG_SMP */
-#ifdef CONFIG_TRACING
-extern void
-__trace_special(void *__tr, void *__data,
- unsigned long arg1, unsigned long arg2, unsigned long arg3);
-#else
-static inline void
-__trace_special(void *__tr, void *__data,
- unsigned long arg1, unsigned long arg2, unsigned long arg3)
-{
-}
-#endif
-
extern long sched_setaffinity(pid_t pid, const struct cpumask *new_mask);
extern long sched_getaffinity(pid_t pid, struct cpumask *mask);
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 78a49e6..d9a4aa0 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -1331,61 +1331,6 @@
#endif /* CONFIG_STACKTRACE */
-static void
-ftrace_trace_special(void *__tr,
- unsigned long arg1, unsigned long arg2, unsigned long arg3,
- int pc)
-{
- struct ftrace_event_call *call = &event_special;
- struct ring_buffer_event *event;
- struct trace_array *tr = __tr;
- struct ring_buffer *buffer = tr->buffer;
- struct special_entry *entry;
-
- event = trace_buffer_lock_reserve(buffer, TRACE_SPECIAL,
- sizeof(*entry), 0, pc);
- if (!event)
- return;
- entry = ring_buffer_event_data(event);
- entry->arg1 = arg1;
- entry->arg2 = arg2;
- entry->arg3 = arg3;
-
- if (!filter_check_discard(call, entry, buffer, event))
- trace_buffer_unlock_commit(buffer, event, 0, pc);
-}
-
-void
-__trace_special(void *__tr, void *__data,
- unsigned long arg1, unsigned long arg2, unsigned long arg3)
-{
- ftrace_trace_special(__tr, arg1, arg2, arg3, preempt_count());
-}
-
-void
-ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3)
-{
- struct trace_array *tr = &global_trace;
- struct trace_array_cpu *data;
- unsigned long flags;
- int cpu;
- int pc;
-
- if (tracing_disabled)
- return;
-
- pc = preempt_count();
- local_irq_save(flags);
- cpu = raw_smp_processor_id();
- data = tr->data[cpu];
-
- if (likely(atomic_inc_return(&data->disabled) == 1))
- ftrace_trace_special(tr, arg1, arg2, arg3, pc);
-
- atomic_dec(&data->disabled);
- local_irq_restore(flags);
-}
-
/**
* trace_vbprintk - write binary msg to tracing buffer
*
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 2114b4c1..638a588 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -22,7 +22,6 @@
TRACE_STACK,
TRACE_PRINT,
TRACE_BPRINT,
- TRACE_SPECIAL,
TRACE_MMIO_RW,
TRACE_MMIO_MAP,
TRACE_BRANCH,
@@ -189,7 +188,6 @@
IF_ASSIGN(var, ent, struct userstack_entry, TRACE_USER_STACK);\
IF_ASSIGN(var, ent, struct print_entry, TRACE_PRINT); \
IF_ASSIGN(var, ent, struct bprint_entry, TRACE_BPRINT); \
- IF_ASSIGN(var, ent, struct special_entry, 0); \
IF_ASSIGN(var, ent, struct trace_mmiotrace_rw, \
TRACE_MMIO_RW); \
IF_ASSIGN(var, ent, struct trace_mmiotrace_map, \
@@ -332,11 +330,6 @@
struct task_struct *wakee,
struct task_struct *cur,
unsigned long flags, int pc);
-void trace_special(struct trace_array *tr,
- struct trace_array_cpu *data,
- unsigned long arg1,
- unsigned long arg2,
- unsigned long arg3, int pc);
void trace_function(struct trace_array *tr,
unsigned long ip,
unsigned long parent_ip,
diff --git a/kernel/trace/trace_entries.h b/kernel/trace/trace_entries.h
index 8412837..e3dfeca 100644
--- a/kernel/trace/trace_entries.h
+++ b/kernel/trace/trace_entries.h
@@ -151,23 +151,6 @@
);
/*
- * Special (free-form) trace entry:
- */
-FTRACE_ENTRY(special, special_entry,
-
- TRACE_SPECIAL,
-
- F_STRUCT(
- __field( unsigned long, arg1 )
- __field( unsigned long, arg2 )
- __field( unsigned long, arg3 )
- ),
-
- F_printk("(%08lx) (%08lx) (%08lx)",
- __entry->arg1, __entry->arg2, __entry->arg3)
-);
-
-/*
* Stack-trace entry:
*/
diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index 57c1b45..a46197b 100644
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c
@@ -1069,65 +1069,6 @@
.funcs = &trace_wake_funcs,
};
-/* TRACE_SPECIAL */
-static enum print_line_t trace_special_print(struct trace_iterator *iter,
- int flags, struct trace_event *event)
-{
- struct special_entry *field;
-
- trace_assign_type(field, iter->ent);
-
- if (!trace_seq_printf(&iter->seq, "# %ld %ld %ld\n",
- field->arg1,
- field->arg2,
- field->arg3))
- return TRACE_TYPE_PARTIAL_LINE;
-
- return TRACE_TYPE_HANDLED;
-}
-
-static enum print_line_t trace_special_hex(struct trace_iterator *iter,
- int flags, struct trace_event *event)
-{
- struct special_entry *field;
- struct trace_seq *s = &iter->seq;
-
- trace_assign_type(field, iter->ent);
-
- SEQ_PUT_HEX_FIELD_RET(s, field->arg1);
- SEQ_PUT_HEX_FIELD_RET(s, field->arg2);
- SEQ_PUT_HEX_FIELD_RET(s, field->arg3);
-
- return TRACE_TYPE_HANDLED;
-}
-
-static enum print_line_t trace_special_bin(struct trace_iterator *iter,
- int flags, struct trace_event *event)
-{
- struct special_entry *field;
- struct trace_seq *s = &iter->seq;
-
- trace_assign_type(field, iter->ent);
-
- SEQ_PUT_FIELD_RET(s, field->arg1);
- SEQ_PUT_FIELD_RET(s, field->arg2);
- SEQ_PUT_FIELD_RET(s, field->arg3);
-
- return TRACE_TYPE_HANDLED;
-}
-
-static struct trace_event_functions trace_special_funcs = {
- .trace = trace_special_print,
- .raw = trace_special_print,
- .hex = trace_special_hex,
- .binary = trace_special_bin,
-};
-
-static struct trace_event trace_special_event = {
- .type = TRACE_SPECIAL,
- .funcs = &trace_special_funcs,
-};
-
/* TRACE_STACK */
static enum print_line_t trace_stack_print(struct trace_iterator *iter,
@@ -1161,9 +1102,6 @@
static struct trace_event_functions trace_stack_funcs = {
.trace = trace_stack_print,
- .raw = trace_special_print,
- .hex = trace_special_hex,
- .binary = trace_special_bin,
};
static struct trace_event trace_stack_event = {
@@ -1194,9 +1132,6 @@
static struct trace_event_functions trace_user_stack_funcs = {
.trace = trace_user_stack_print,
- .raw = trace_special_print,
- .hex = trace_special_hex,
- .binary = trace_special_bin,
};
static struct trace_event trace_user_stack_event = {
@@ -1314,7 +1249,6 @@
&trace_fn_event,
&trace_ctx_event,
&trace_wake_event,
- &trace_special_event,
&trace_stack_event,
&trace_user_stack_event,
&trace_bprint_event,
diff --git a/kernel/trace/trace_selftest.c b/kernel/trace/trace_selftest.c
index 6ed05ee..155a415 100644
--- a/kernel/trace/trace_selftest.c
+++ b/kernel/trace/trace_selftest.c
@@ -13,7 +13,6 @@
case TRACE_WAKE:
case TRACE_STACK:
case TRACE_PRINT:
- case TRACE_SPECIAL:
case TRACE_BRANCH:
case TRACE_GRAPH_ENT:
case TRACE_GRAPH_RET: