From: Masami Hiramatsu <masami.hiramatsu.pt@xxxxxxxxxxx>
Use TRACE_DIR environment variable for setting
debugfs/tracing directory if defined. This is
for controlling guest(or remote) ftrace.
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@xxxxxxxxxxx>
Signed-off-by: Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@xxxxxxxxxxx>
---
trace-util.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/trace-util.c b/trace-util.c
index e128188..d5a3eb4 100644
--- a/trace-util.c
+++ b/trace-util.c
@@ -311,6 +311,15 @@ char *tracecmd_find_tracing_dir(void)
char type[100];
FILE *fp;
+ tracing_dir = getenv("TRACE_DIR");
+ if (tracing_dir) {
+ tracing_dir = strdup(tracing_dir);
+ if (!tracing_dir)
+ die("malloc");
+ warning("Use environmental tracing directory: %s\n", tracing_dir);
+ return tracing_dir;
+ }
+
if ((fp = fopen("/proc/mounts","r")) == NULL) {
warning("Can't open /proc/mounts for read");
return NULL;
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