lkml.org 
[lkml]   [2016]   [Jun]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH V2 3/4] trace: duplicate function pointer to STM
Date
This patch inserts an output from Ftrace to STM, logs the pointer of
the functions and their parents to STM.

Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org>
---
kernel/trace/trace.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 8a4bd6b..ed9e1b4 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -41,6 +41,7 @@
#include <linux/nmi.h>
#include <linux/fs.h>
#include <linux/sched/rt.h>
+#include <linux/trace_output_stm.h>

#include "trace.h"
#include "trace_output.h"
@@ -1884,8 +1885,10 @@ trace_function(struct trace_array *tr,
entry->ip = ip;
entry->parent_ip = parent_ip;

- if (!call_filter_check_discard(call, entry, buffer, event))
+ if (!call_filter_check_discard(call, entry, buffer, event)) {
__buffer_unlock_commit(buffer, event);
+ trace_func_to_stm(ip, parent_ip);
+ }
}

#ifdef CONFIG_STACKTRACE
--
1.9.1
\
 
 \ /
  Last update: 2016-06-22 05:41    [W:0.598 / U:0.124 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site