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Commit 9e57a5be authored by Aparna Das's avatar Aparna Das
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coresight: add stm logging to support optimization in trace printk 



The function trace_printk() performs optimization by determining if
there are no format parameters in argument string and calls appropriate
apis to write to ftrace buffer. Add STM logging to support this
optimization in order to allow CoreSight STM tracing for optimized
trace_printk path.

Change-Id: I1a77291e77410c6ed99474335a6d25742c409e47
Signed-off-by: default avatarAparna Das <adas@codeaurora.org>
parent 14a5d3a3

kernel/trace/trace.c

+5 −1
Original line number Diff line number Diff line
@@ -383,8 +383,11 @@ int __trace_puts(unsigned long ip, const char *str, int size) 
	if (entry->buf[size - 1] != '\n') {

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

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

	} else

		stm_log(OST_ENTITY_TRACE_PRINTK, entry->buf, size + 2);

	} else {

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

		stm_log(OST_ENTITY_TRACE_PRINTK, entry->buf, size + 1);

	}



	__buffer_unlock_commit(buffer, event);
@@ -415,6 +418,7 @@ int __trace_bputs(unsigned long ip, const char *str) 
	entry = ring_buffer_event_data(event);

	entry->ip			= ip;

	entry->str			= str;

	stm_log(OST_ENTITY_TRACE_PRINTK, entry->str, strlen(entry->str)+1);



	__buffer_unlock_commit(buffer, event);