It's not very polite to put trace messages to debugfs without asking the user,
while they are only used for easier debugging fuse_kio_pcs module. This patch
disables debugfs tracing by default and makes it possible to enable this traces
via debugfs_tracing option.
Signed-off-by: Pavel Butsykin <pbutsy...@virtuozzo.com>
---
fs/fuse/kio/pcs/pcs_fuse_kdirect.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/fs/fuse/kio/pcs/pcs_fuse_kdirect.c
b/fs/fuse/kio/pcs/pcs_fuse_kdirect.c
index 7bedb7f95486..e4d23eb38208 100644
--- a/fs/fuse/kio/pcs/pcs_fuse_kdirect.c
+++ b/fs/fuse/kio/pcs/pcs_fuse_kdirect.c
@@ -31,6 +31,10 @@ unsigned int pcs_loglevel = LOG_TRACE;
module_param(pcs_loglevel, uint, 0644);
MODULE_PARM_DESC(pcs_loglevel, "Trace level");
+unsigned int debugfs_tracing;
+module_param(debugfs_tracing, uint, 0644);
+MODULE_PARM_DESC(debugfs_tracing, "Enable/Disbale debugfs tracing");
+
#ifdef CONFIG_DEBUG_KERNEL
static int set_sockio_fail_percent(const char *val, struct kernel_param *kp)
{
@@ -1472,10 +1476,12 @@ void __kfuse_trace(struct fuse_conn * fc, unsigned long
ip, const char * fmt, ..
if (t)
memcpy(t + 1, buf, len + 1);
FUSE_TRACE_COMMIT(tr);
- if (ip)
- __trace_puts(ip, buf, len);
- else
- pr_debug("%s\n", buf);
+ if (unlikely(debugfs_tracing)) {
+ if (ip)
+ __trace_puts(ip, buf, len);
+ else
+ pr_debug("%s\n", buf);
+ }
}
put_cpu();
}
--
2.15.1
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