add spawn benchmark

9 files changed, 99 insertions, 22 deletions

diff --git a/benchmarks/create/source.mk b/benchmarks/create/source.mk
index 0377337..48b022d 100644
--- a/benchmarks/create/source.mk
+++ b/benchmarks/create/source.mk
@@ -1 +1 @@
-DO != ./scripts/gen-benchmark -n create
+DO != ./scripts/gen-benchmark -n create -p init
diff --git a/benchmarks/fork/source.mk b/benchmarks/fork/source.mk
index 46bde60..9c82080 100644
--- a/benchmarks/fork/source.mk
+++ b/benchmarks/fork/source.mk
@@ -1 +1 @@
-DO != ./scripts/gen-benchmark -n fork
+DO != ./scripts/gen-benchmark -n fork -p init
diff --git a/benchmarks/ipc-req/source.mk b/benchmarks/ipc-req/source.mk
index 21dc0e0..3a31d47 100644
--- a/benchmarks/ipc-req/source.mk
+++ b/benchmarks/ipc-req/source.mk
@@ -1 +1 @@
-DO != ./scripts/gen-benchmark -n ipc-req
+DO != ./scripts/gen-benchmark -n ipc-req -p init
diff --git a/benchmarks/malloc/source.mk b/benchmarks/malloc/source.mk
index 3367314..0c54306 100644
--- a/benchmarks/malloc/source.mk
+++ b/benchmarks/malloc/source.mk
@@ -1 +1 @@
-DO != ./scripts/gen-benchmark -n malloc
+DO != ./scripts/gen-benchmark -n malloc -p init
diff --git a/benchmarks/scripts/gen-benchmark b/benchmarks/scripts/gen-benchmark
index 459040d..6545d11 100755
--- a/benchmarks/scripts/gen-benchmark
+++ b/benchmarks/scripts/gen-benchmark
@@ -1,32 +1,45 @@
 #!/bin/sh
 
 NAME=
+PROGS=
 while getopts "n:p:" opt; do
 	case "$opt" in
 		n) NAME="$OPTARG";;
+		p) PROGS="$PROGS $OPTARG";;
 		*) echo "unrecognised options -$OPTARG" >&2; exit 1;
 	esac
 done
 
-obj="build/${NAME}/init.o"
-dep="${obj}.d"
+mkdir -p "build/$NAME"
 
-echo "${dep}:"							>> benchmarks.mk
-echo "-include ${dep}"						>> benchmarks.mk
-echo "${obj}: $NAME/${s}"					>> benchmarks.mk
-echo "	mkdir -p build/$NAME"					>> benchmarks.mk
-echo "	\$(COMPILE_BENCHMARK) -c $NAME/init.c -o ${obj}"	>> benchmarks.mk
+if [ -z "$NAME" ]; then
+	echo "No name given for benchmark" >&2; exit 2;
+fi
 
-echo "build/${NAME}/initrd: ${obj} \$(COMMON)"			>> benchmarks.mk
-echo "	\$(COMPILE_BENCHMARK) ${obj} \
-	\$(COMMON) -o build/${NAME}/init"			>> benchmarks.mk
+if [ -z "$PROGS" ]; then
+	echo "No programs to add to initrd" >&2; exit 3;
+fi
 
-echo "	echo build/${NAME}/init | \
-	\$(GEN_INITRD) build/${NAME}/initrd"			>> benchmarks.mk
+for p in $PROGS
+do
+	dep="build/${NAME}/${p}.d"
 
-echo "BENCHMARKS += ${NAME}"					>> benchmarks.mk
-echo ".PHONY: ${NAME}"						>> benchmarks.mk
-echo "${NAME}: build/${NAME}/initrd"				>> benchmarks.mk
-echo "	mkdir -p reports/${NAME}"				>> benchmarks.mk
+	echo "${NAME}_PROGS += build/${NAME}/${p}"			>> benchmarks.mk
+	echo "${dep}:"							>> benchmarks.mk
+	echo "-include ${dep}"						>> benchmarks.mk
+	echo "build/${NAME}/${p}: $NAME/$p.c \$(COMMON)"		>> benchmarks.mk
+	echo "	\$(COMPILE_BENCHMARK) $NAME/${p}.c \$(COMMON) \\"	>> benchmarks.mk
+	echo "		-o build/${NAME}/${p}"				>> benchmarks.mk
+done
+
+echo "build/${NAME}/initrd: \$(${NAME}_PROGS) \$(COMMON) \$(KMI)"	>> benchmarks.mk
+echo "	for p in \$(${NAME}_PROGS); do \\"				>> benchmarks.mk
+echo "		echo \$\$p; \\"						>> benchmarks.mk
+echo "	done | \$(GEN_INITRD) build/$NAME/initrd"			>> benchmarks.mk
+
+echo "BENCHMARKS += ${NAME}"						>> benchmarks.mk
+echo ".PHONY: ${NAME}"							>> benchmarks.mk
+echo "${NAME}: build/${NAME}/initrd"					>> benchmarks.mk
+echo "	mkdir -p reports/${NAME}"					>> benchmarks.mk
 echo "	timeout --foreground 30s \
-	\$(QEMU) build/${NAME}/initrd > reports/${NAME}/log"	>> benchmarks.mk
+	\$(QEMU) build/${NAME}/initrd > reports/${NAME}/log"		>> benchmarks.mk
diff --git a/benchmarks/scripts/makefile b/benchmarks/scripts/makefile
index 7140c05..f862305 100644
--- a/benchmarks/scripts/makefile
+++ b/benchmarks/scripts/makefile
@@ -32,11 +32,14 @@ QEMU		:= qemu-system-$(ARCH) -machine virt -kernel ../kmi.bin \
 		   -initrd
 
 KMI		:= ../kmi.bin
-COMMON		:= build/printf.o
+COMMON		:= build/printf.o build/string.o
 
 build/printf.o: common/printf.c $(KMI)
 	$(COMPILE_BENCHMARK) -c common/printf.c -o build/printf.o
 
+build/string.o: common/string.c $(KMI)
+	$(COMPILE_BENCHMARK) -c common/string.c -o build/string.o
+
 BENCHMARKS :=
 include benchmarks.mk
 
diff --git a/benchmarks/spawn/init.c b/benchmarks/spawn/init.c
new file mode 100644
index 0000000..d4c2504
--- /dev/null
+++ b/benchmarks/spawn/init.c
@@ -0,0 +1,46 @@
+#include <common/benchmark.h>
+#include <common/cpio.h>
+
+void callback()
+{
+	sys_exit(1);
+}
+
+START(pid, tid, d0, d1, d2, d3)
+{
+	UNUSED(pid);
+	UNUSED(tid);
+	UNUSED(d0);
+	UNUSED(d1);
+	UNUSED(d2);
+	UNUSED(d3);
+
+	if (d0 == SYS_USER_ORPHANED) {
+		sys_exit(1);
+	}
+
+	printf("finding spawn in cpio archive %lx...\n", d2);
+	struct cpio_header *cp = cpio_find_file((const void *)d2,
+			"spawn", sizeof("spawn") - 1);
+
+	if (!cp) {
+		printf("couldn't find spawn?\n");
+		report(0, 0, 0);
+	}
+
+	long name_len = convnum(cp->c_namesize, 8, 16);
+	uintptr_t spawn = (uintptr_t)(cp) + align_up(sizeof(struct cpio_header) + name_len, 4);
+	printf("found spawn at %lx\n", spawn);
+
+	uint64_t timebase = sys_timebase();
+	uint64_t start = sys_ticks();
+
+	for (size_t i = 0; i < 1000; ++i) {
+		id_t new_id = sys_spawn(spawn, 0);
+		sys_detach(new_id);
+		sys_swap(new_id);
+	}
+
+	uint64_t end = sys_ticks();
+	report(start, end, timebase);
+}
diff --git a/benchmarks/spawn/source.mk b/benchmarks/spawn/source.mk
new file mode 100644
index 0000000..20ce8d4
--- /dev/null
+++ b/benchmarks/spawn/source.mk
@@ -0,0 +1 @@
+DO != ./scripts/gen-benchmark -n spawn -p init -p spawn
diff --git a/benchmarks/spawn/spawn.c b/benchmarks/spawn/spawn.c
new file mode 100644
index 0000000..c6a2f8e
--- /dev/null
+++ b/benchmarks/spawn/spawn.c
@@ -0,0 +1,14 @@
+#include <common/benchmark.h>
+
+START(pid, tid, d0, d1, d2, d3)
+{
+	UNUSED(pid);
+	UNUSED(tid);
+	UNUSED(d0);
+	UNUSED(d1);
+	UNUSED(d2);
+	UNUSED(d3);
+
+	printf("not sure how we got here?\n");
+	/* die or something */
+}