shithub: riscv

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ref: b54c61c6174251736e0a6bf30fc1631eca79210c
parent: 06221c080dad6650b1e1af88857951775803bf32
author: cinap_lenrek <cinap_lenrek@felloff.net>
date: Sat Mar 16 13:10:59 EDT 2024

devpipe: use 256k pipeqsize as default, make sure its a multiple of the i/o unit

--- a/sys/src/9/port/devpipe.c
+++ b/sys/src/9/port/devpipe.c
@@ -39,12 +39,10 @@
 static void
 pipeinit(void)
 {
-	if(conf.pipeqsize == 0){
-		if(conf.nmach > 1)
-			conf.pipeqsize = 256*1024;
-		else
-			conf.pipeqsize = 32*1024;
-	}
+	if(conf.pipeqsize == 0)
+		conf.pipeqsize = 256*1024;
+	/* make pipeqsize a multiple of our i/o unit */
+	conf.pipeqsize = qiomaxatomic * ((conf.pipeqsize + qiomaxatomic-1)/qiomaxatomic);
 }
 
 /*