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Commit db9fa880 authored by Mulu He's avatar Mulu He Committed by Tingwei Zhang
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trace: Fix no PID issue for trace marker 



Save the Event Meta info include PID into STM log.

Change-Id: I18b00a9f745861e870c055c46b99530d98bdcc73
Signed-off-by: default avatarMulu He <muluhe@codeaurora.org>
parent 48e0d554

kernel/trace/trace.c

+6 −4
Original line number Original line Diff line number Diff line
@@ -6089,6 +6089,7 @@ tracing_mark_write(struct file *filp, const char __user *ubuf, 
	struct trace_array *tr = filp->private_data;

	struct trace_array *tr = filp->private_data;

	struct ring_buffer_event *event;

	struct ring_buffer_event *event;

	enum event_trigger_type tt = ETT_NONE;

	enum event_trigger_type tt = ETT_NONE;

	struct trace_entry *trace_entry;

	struct ring_buffer *buffer;

	struct ring_buffer *buffer;

	struct print_entry *entry;

	struct print_entry *entry;

	unsigned long irq_flags;

	unsigned long irq_flags;
@@ -6126,7 +6127,8 @@ tracing_mark_write(struct file *filp, const char __user *ubuf, 
		return -EBADF;

		return -EBADF;





	entry = ring_buffer_event_data(event);

	entry = ring_buffer_event_data(event);

	entry->ip = _THIS_IP_;

	trace_entry = (struct trace_entry *)entry;

	entry->ip = trace_entry->pid;





	len = __copy_from_user_inatomic(&entry->buf, ubuf, cnt);

	len = __copy_from_user_inatomic(&entry->buf, ubuf, cnt);

	if (len) {

	if (len) {
@@ -6146,12 +6148,12 @@ tracing_mark_write(struct file *filp, const char __user *ubuf, 
	if (entry->buf[cnt - 1] != '\n') {

	if (entry->buf[cnt - 1] != '\n') {

		entry->buf[cnt] = '\n';

		entry->buf[cnt] = '\n';

		entry->buf[cnt + 1] = '\0';

		entry->buf[cnt + 1] = '\0';

		stm_log(OST_ENTITY_TRACE_MARKER, entry->buf, cnt + 2);

		stm_log(OST_ENTITY_TRACE_MARKER, entry, sizeof(*entry)+cnt + 2);

	} else {

	} else {

		entry->buf[cnt] = '\0';

		entry->buf[cnt] = '\0';

		stm_log(OST_ENTITY_TRACE_MARKER, entry->buf, cnt + 1);

		stm_log(OST_ENTITY_TRACE_MARKER, entry, sizeof(*entry)+cnt + 1);

	}

	}



	entry->ip = _THIS_IP_;

	__buffer_unlock_commit(buffer, event);

	__buffer_unlock_commit(buffer, event);





	if (tt)

	if (tt)