From bcb857d9343b0c96d63ba4d6ca71a6df24a80863 Mon Sep 17 00:00:00 2001
From: Con Kolivas <kernel@kolivas.org>
Date: Tue, 22 Feb 2011 00:58:55 +1100
Subject: [PATCH] Don't add extra threads for single-threaded decompression
 case.

---
 stream.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/stream.c b/stream.c
index 1fef9fa..d9ee835 100644
--- a/stream.c
+++ b/stream.c
@@ -842,8 +842,11 @@ void *open_stream_in(int f, int n)
 		return NULL;
 
 	/* We have one thread dedicated to stream 0, and one more thread than
-	 * CPUs to keep them busy. */
-	total_threads = control.threads + 2;
+	 * CPUs to keep them busy, unless we're running single-threaded. */
+	if (control.threads > 1)
+		total_threads = control.threads + 2;
+	else
+		total_threads = control.threads + 1;
 	threads = calloc(sizeof(pthread_t), total_threads);
 	if (unlikely(!threads))
 		return NULL;