From: "Steven Rostedt (Google)" <rostedt@xxxxxxxxxxx>
If there is no compression algorithm, do not even bother trying to do
compression. Just turn it off. This is not a bug, it is more of an
optimization.
Signed-off-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx>
---
lib/trace-cmd/trace-input.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/lib/trace-cmd/trace-input.c b/lib/trace-cmd/trace-input.c
index 425c6077d88e..90bfa0f32984 100644
--- a/lib/trace-cmd/trace-input.c
+++ b/lib/trace-cmd/trace-input.c
@@ -4278,7 +4278,10 @@ struct tracecmd_input *tracecmd_alloc_fd(int fd, int flags)
if (!zver)
goto failed_read;
- if (strcmp(zname, "none")) {
+ if (strcmp(zname, "none") == 0) {
+ handle->read_zpage = false;
+ handle->flags &= ~TRACECMD_FL_COMPRESSION;
+ } else {
handle->compress = tracecmd_compress_alloc(zname, zver,
handle->fd,
handle->pevent, NULL);
--
2.35.1
|