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tracing: remove extra latency_trace method from trace structure

Browse Source 
Impact: clean up

The trace and latency_trace function pointers are identical for
every tracer but the function tracer. The differences in the function
tracer are trivial (latency output puts paranthesis around parent).

This patch removes the latency_trace pointer and all prints will
now just use the trace output function pointer.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
This commit is contained in:
Steven Rostedt 2009-03-04 21:42:04 -05:00
parent c032ef64d6
commit 5fd73f8624
5 changed files with 1 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
kernel/trace/blktrace.c
View File

@ -1231,7 +1231,6 @@ static struct tracer blk_tracer __read_mostly = {
static struct trace_event trace_blk_event = {
.type = TRACE_BLK,
.trace = blk_trace_event_print,
.latency_trace = blk_trace_event_print,
.binary = blk_trace_event_print_binary,
};

2
kernel/trace/trace.c
View File

@ -1485,7 +1485,7 @@ static enum print_line_t print_lat_fmt(struct trace_iterator *iter)
}
if (event)
return event->latency_trace(iter, sym_flags);
return event->trace(iter, sym_flags);
if (!trace_seq_printf(s, "Unknown type %d\n", entry->type))
goto partial;

1
kernel/trace/trace_branch.c
View File

@ -159,7 +159,6 @@ static enum print_line_t trace_branch_print(struct trace_iterator *iter,
static struct trace_event trace_branch_event = {
.type = TRACE_BRANCH,
.trace = trace_branch_print,
.latency_trace = trace_branch_print,
};
static struct tracer branch_trace __read_mostly =

32
kernel/trace/trace_output.c
View File

@ -437,8 +437,6 @@ int register_ftrace_event(struct trace_event *event)
if (event->trace == NULL)
event->trace = trace_nop_print;
if (event->latency_trace == NULL)
event->latency_trace = trace_nop_print;
if (event->raw == NULL)
event->raw = trace_nop_print;
if (event->hex == NULL)
@ -480,29 +478,6 @@ enum print_line_t trace_nop_print(struct trace_iterator *iter, int flags)
}
/* TRACE_FN */
static enum print_line_t trace_fn_latency(struct trace_iterator *iter,
int flags)
{
struct ftrace_entry *field;
struct trace_seq *s = &iter->seq;
trace_assign_type(field, iter->ent);
if (!seq_print_ip_sym(s, field->ip, flags))
goto partial;
if (!trace_seq_puts(s, " ("))
goto partial;
if (!seq_print_ip_sym(s, field->parent_ip, flags))
goto partial;
if (!trace_seq_puts(s, ")\n"))
goto partial;
return TRACE_TYPE_HANDLED;
partial:
return TRACE_TYPE_PARTIAL_LINE;
}
static enum print_line_t trace_fn_trace(struct trace_iterator *iter, int flags)
{
struct ftrace_entry *field;
@ -573,7 +548,6 @@ static enum print_line_t trace_fn_bin(struct trace_iterator *iter, int flags)
static struct trace_event trace_fn_event = {
.type = TRACE_FN,
.trace = trace_fn_trace,
.latency_trace = trace_fn_latency,
.raw = trace_fn_raw,
.hex = trace_fn_hex,
.binary = trace_fn_bin,
@ -705,7 +679,6 @@ static enum print_line_t trace_ctxwake_bin(struct trace_iterator *iter,
static struct trace_event trace_ctx_event = {
.type = TRACE_CTX,
.trace = trace_ctx_print,
.latency_trace = trace_ctx_print,
.raw = trace_ctx_raw,
.hex = trace_ctx_hex,
.binary = trace_ctxwake_bin,
@ -714,7 +687,6 @@ static struct trace_event trace_ctx_event = {
static struct trace_event trace_wake_event = {
.type = TRACE_WAKE,
.trace = trace_wake_print,
.latency_trace = trace_wake_print,
.raw = trace_wake_raw,
.hex = trace_wake_hex,
.binary = trace_ctxwake_bin,
@ -770,7 +742,6 @@ static enum print_line_t trace_special_bin(struct trace_iterator *iter,
static struct trace_event trace_special_event = {
.type = TRACE_SPECIAL,
.trace = trace_special_print,
.latency_trace = trace_special_print,
.raw = trace_special_print,
.hex = trace_special_hex,
.binary = trace_special_bin,
@ -808,7 +779,6 @@ static enum print_line_t trace_stack_print(struct trace_iterator *iter,
static struct trace_event trace_stack_event = {
.type = TRACE_STACK,
.trace = trace_stack_print,
.latency_trace = trace_stack_print,
.raw = trace_special_print,
.hex = trace_special_hex,
.binary = trace_special_bin,
@ -838,7 +808,6 @@ static enum print_line_t trace_user_stack_print(struct trace_iterator *iter,
static struct trace_event trace_user_stack_event = {
.type = TRACE_USER_STACK,
.trace = trace_user_stack_print,
.latency_trace = trace_user_stack_print,
.raw = trace_special_print,
.hex = trace_special_hex,
.binary = trace_special_bin,
@ -883,7 +852,6 @@ static enum print_line_t trace_print_raw(struct trace_iterator *iter, int flags)
static struct trace_event trace_print_event = {
.type = TRACE_PRINT,
.trace = trace_print_print,
.latency_trace = trace_print_print,
.raw = trace_print_raw,
};

1
kernel/trace/trace_output.h
View File

@ -10,7 +10,6 @@ struct trace_event {
struct hlist_node node;
int type;
trace_print_func trace;
trace_print_func latency_trace;
trace_print_func raw;
trace_print_func hex;
trace_print_func binary;