coresight: enable stm logging for ftrace events and printk
Dup ftrace event traffic (including writes to trace_marker file from
userspace) to STM. Also dup printk traffic to STM. This allows Linux
tracing and log data to be correlated with other data transported over
STM.
Change-Id: Ieb0b856447f7667eb0005a6a884211dc46f50217
Signed-off-by: Pratik Patel <pratikp@codeaurora.org>
diff --git a/kernel/printk.c b/kernel/printk.c
index 4cf4670..90dfdde 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -41,6 +41,7 @@
#include <linux/cpu.h>
#include <linux/notifier.h>
#include <linux/rculist.h>
+#include <linux/coresight-stm.h>
#include <asm/uaccess.h>
@@ -959,6 +960,8 @@
}
}
+ stm_log(OST_ENTITY_PRINTK, printk_buf, printed_len);
+
/*
* Copy the output into log_buf. If the caller didn't provide
* the appropriate log prefix, we insert them here