[PATCH V2 3/4] trace: duplicate function pointer to STM
From: Chunyan Zhang <hidden>
Date: 2016-06-22 02:53:30
Also in:
lkml
Subsystem:
the rest, tracing · Maintainers:
Linus Torvalds, Steven Rostedt, Masami Hiramatsu
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 <redacted> --- 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
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1.9.1