diff mbox series

trace-cmd library: When the compression algorithm is none do no compression

Message ID 20220405113650.188bf8bf@gandalf.local.home (mailing list archive)
State Accepted
Commit 49b0447e197840b1352d4284c7646c6750099985
Headers show
Series trace-cmd library: When the compression algorithm is none do no compression | expand

Commit Message

Steven Rostedt April 5, 2022, 3:36 p.m. UTC 
From: "Steven Rostedt (Google)" <rostedt@goodmis.org>

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@goodmis.org>
---
 lib/trace-cmd/trace-input.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
diff mbox series

Patch

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);