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-rw-r--r--kernel/trace/trace.c61
-rw-r--r--kernel/trace/trace.h7
-rw-r--r--kernel/trace/trace_functions_graph.c3
-rw-r--r--kernel/trace/trace_mmiotrace.c3
4 files changed, 0 insertions, 74 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index f4bb3800318b..fca0233f1d73 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -1765,43 +1765,6 @@ static int task_state_char(unsigned long state)
return bit < sizeof(state_to_char) - 1 ? state_to_char[bit] : '?';
}
-/*
- * The message is supposed to contain an ending newline.
- * If the printing stops prematurely, try to add a newline of our own.
- */
-void trace_seq_print_cont(struct trace_seq *s, struct trace_iterator *iter)
-{
- struct trace_entry *ent;
- struct trace_field_cont *cont;
- bool ok = true;
-
- ent = peek_next_entry(iter, iter->cpu, NULL);
- if (!ent || ent->type != TRACE_CONT) {
- trace_seq_putc(s, '\n');
- return;
- }
-
- do {
- cont = (struct trace_field_cont *)ent;
- if (ok)
- ok = (trace_seq_printf(s, "%s", cont->buf) > 0);
-
- ftrace_disable_cpu();
-
- if (iter->buffer_iter[iter->cpu])
- ring_buffer_read(iter->buffer_iter[iter->cpu], NULL);
- else
- ring_buffer_consume(iter->tr->buffer, iter->cpu, NULL);
-
- ftrace_enable_cpu();
-
- ent = peek_next_entry(iter, iter->cpu, NULL);
- } while (ent && ent->type == TRACE_CONT);
-
- if (!ok)
- trace_seq_putc(s, '\n');
-}
-
static void test_cpu_buff_start(struct trace_iterator *iter)
{
struct trace_seq *s = &iter->seq;
@@ -1834,9 +1797,6 @@ print_lat_fmt(struct trace_iterator *iter, unsigned int trace_idx, int cpu)
int S, T;
int i;
- if (entry->type == TRACE_CONT)
- return TRACE_TYPE_HANDLED;
-
test_cpu_buff_start(iter);
next_entry = find_next_entry(iter, NULL, &next_ts);
@@ -1922,8 +1882,6 @@ print_lat_fmt(struct trace_iterator *iter, unsigned int trace_idx, int cpu)
seq_print_ip_sym(s, field->ip, sym_flags);
trace_seq_printf(s, ": %s", field->buf);
- if (entry->flags & TRACE_FLAG_CONT)
- trace_seq_print_cont(s, iter);
break;
}
case TRACE_BRANCH: {
@@ -1968,9 +1926,6 @@ static enum print_line_t print_trace_fmt(struct trace_iterator *iter)
entry = iter->ent;
- if (entry->type == TRACE_CONT)
- return TRACE_TYPE_HANDLED;
-
test_cpu_buff_start(iter);
comm = trace_find_cmdline(iter->ent->pid);
@@ -2076,8 +2031,6 @@ static enum print_line_t print_trace_fmt(struct trace_iterator *iter)
seq_print_ip_sym(s, field->ip, sym_flags);
trace_seq_printf(s, ": %s", field->buf);
- if (entry->flags & TRACE_FLAG_CONT)
- trace_seq_print_cont(s, iter);
break;
}
case TRACE_GRAPH_RET: {
@@ -2124,9 +2077,6 @@ static enum print_line_t print_raw_fmt(struct trace_iterator *iter)
entry = iter->ent;
- if (entry->type == TRACE_CONT)
- return TRACE_TYPE_HANDLED;
-
ret = trace_seq_printf(s, "%d %d %llu ",
entry->pid, iter->cpu, iter->ts);
if (!ret)
@@ -2187,8 +2137,6 @@ static enum print_line_t print_raw_fmt(struct trace_iterator *iter)
trace_assign_type(field, entry);
trace_seq_printf(s, "# %lx %s", field->ip, field->buf);
- if (entry->flags & TRACE_FLAG_CONT)
- trace_seq_print_cont(s, iter);
break;
}
}
@@ -2217,9 +2165,6 @@ static enum print_line_t print_hex_fmt(struct trace_iterator *iter)
entry = iter->ent;
- if (entry->type == TRACE_CONT)
- return TRACE_TYPE_HANDLED;
-
SEQ_PUT_HEX_FIELD_RET(s, entry->pid);
SEQ_PUT_HEX_FIELD_RET(s, iter->cpu);
SEQ_PUT_HEX_FIELD_RET(s, iter->ts);
@@ -2283,9 +2228,6 @@ static enum print_line_t print_printk_msg_only(struct trace_iterator *iter)
if (!ret)
return TRACE_TYPE_PARTIAL_LINE;
- if (entry->flags & TRACE_FLAG_CONT)
- trace_seq_print_cont(s, iter);
-
return TRACE_TYPE_HANDLED;
}
@@ -2296,9 +2238,6 @@ static enum print_line_t print_bin_fmt(struct trace_iterator *iter)
entry = iter->ent;
- if (entry->type == TRACE_CONT)
- return TRACE_TYPE_HANDLED;
-
SEQ_PUT_FIELD_RET(s, entry->pid);
SEQ_PUT_FIELD_RET(s, entry->cpu);
SEQ_PUT_FIELD_RET(s, iter->ts);
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index cc7a4f864036..3a357382cce6 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -16,7 +16,6 @@ enum trace_type {
TRACE_FN,
TRACE_CTX,
TRACE_WAKE,
- TRACE_CONT,
TRACE_STACK,
TRACE_PRINT,
TRACE_SPECIAL,
@@ -178,7 +177,6 @@ struct trace_power {
* NEED_RESCED - reschedule is requested
* HARDIRQ - inside an interrupt handler
* SOFTIRQ - inside a softirq handler
- * CONT - multiple entries hold the trace item
*/
enum trace_flag_type {
TRACE_FLAG_IRQS_OFF = 0x01,
@@ -186,7 +184,6 @@ enum trace_flag_type {
TRACE_FLAG_NEED_RESCHED = 0x04,
TRACE_FLAG_HARDIRQ = 0x08,
TRACE_FLAG_SOFTIRQ = 0x10,
- TRACE_FLAG_CONT = 0x20,
};
#define TRACE_BUF_SIZE 1024
@@ -262,7 +259,6 @@ extern void __ftrace_bad_type(void);
do { \
IF_ASSIGN(var, ent, struct ftrace_entry, TRACE_FN); \
IF_ASSIGN(var, ent, struct ctx_switch_entry, 0); \
- IF_ASSIGN(var, ent, struct trace_field_cont, TRACE_CONT); \
IF_ASSIGN(var, ent, struct stack_entry, TRACE_STACK); \
IF_ASSIGN(var, ent, struct userstack_entry, TRACE_USER_STACK);\
IF_ASSIGN(var, ent, struct print_entry, TRACE_PRINT); \
@@ -489,9 +485,6 @@ extern int trace_selftest_startup_branch(struct tracer *trace,
extern void *head_page(struct trace_array_cpu *data);
extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...);
-extern void trace_seq_print_cont(struct trace_seq *s,
- struct trace_iterator *iter);
-
extern int
seq_print_ip_sym(struct trace_seq *s, unsigned long ip,
unsigned long sym_flags);
diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c
index bc7d90850be5..f261966e5b6c 100644
--- a/kernel/trace/trace_functions_graph.c
+++ b/kernel/trace/trace_functions_graph.c
@@ -589,9 +589,6 @@ print_graph_comment(struct print_entry *trace, struct trace_seq *s,
if (!ret)
return TRACE_TYPE_PARTIAL_LINE;
- if (ent->flags & TRACE_FLAG_CONT)
- trace_seq_print_cont(s, iter);
-
/* Strip ending newline */
if (s->buffer[s->len - 1] == '\n') {
s->buffer[s->len - 1] = '\0';
diff --git a/kernel/trace/trace_mmiotrace.c b/kernel/trace/trace_mmiotrace.c
index fffcb069f1dc..83f20ae6bd68 100644
--- a/kernel/trace/trace_mmiotrace.c
+++ b/kernel/trace/trace_mmiotrace.c
@@ -262,9 +262,6 @@ static enum print_line_t mmio_print_mark(struct trace_iterator *iter)
if (!ret)
return TRACE_TYPE_PARTIAL_LINE;
- if (entry->flags & TRACE_FLAG_CONT)
- trace_seq_print_cont(s, iter);
-
return TRACE_TYPE_HANDLED;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.