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authorAustin Clements <[email protected]>2010-09-01 02:14:35 -0400
committerAustin Clements <[email protected]>2010-09-01 02:14:35 -0400
commit41c4bbb505f4389a5c1660b407cd4073d7a72aab (patch)
treeae13a22d8f4e00ac5c7061b156004c9171e3b6c0
parentb0751a3e9bfce88cb07c1a540ceabf21f2d53b31 (diff)
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Make it easy to change the number of CPUs
-rw-r--r--Makefile5
1 files changed, 4 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index 37924e2..30cec7c 100644
--- a/Makefile
+++ b/Makefile
@@ -179,7 +179,10 @@ GDBPORT = $(shell expr `id -u` % 5000 + 25000)
QEMUGDB = $(shell if $(QEMU) -help | grep -q '^-gdb'; \
then echo "-gdb tcp::$(GDBPORT)"; \
else echo "-s -p $(GDBPORT)"; fi)
-QEMUOPTS = -smp 2 -hdb fs.img xv6.img
+ifndef CPUS
+CPUS := 2
+endif
+QEMUOPTS = -hdb fs.img xv6.img -smp $(CPUS)
qemu: fs.img xv6.img
$(QEMU) -serial mon:stdio $(QEMUOPTS)