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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [PATCH 4/4] tools/tests: Memory Claims
Add some basic testing of the memory claims mechainsm.
Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
CC: Anthony PERARD <anthony.perard@xxxxxxxxxx>
CC: Michal Orzel <michal.orzel@xxxxxxx>
CC: Jan Beulich <jbeulich@xxxxxxxx>
CC: Julien Grall <julien@xxxxxxx>
CC: Roger Pau Monné <roger.pau@xxxxxxxxxx>
CC: Stefano Stabellini <sstabellini@xxxxxxxxxx>
---
tools/tests/Makefile | 1 +
tools/tests/mem-claim/.gitignore | 1 +
tools/tests/mem-claim/Makefile | 38 +++++
tools/tests/mem-claim/test-mem-claim.c | 190 +++++++++++++++++++++++++
4 files changed, 230 insertions(+)
create mode 100644 tools/tests/mem-claim/.gitignore
create mode 100644 tools/tests/mem-claim/Makefile
create mode 100644 tools/tests/mem-claim/test-mem-claim.c
diff --git a/tools/tests/Makefile b/tools/tests/Makefile
index e566bd169952..6477a4386dda 100644
--- a/tools/tests/Makefile
+++ b/tools/tests/Makefile
@@ -3,6 +3,7 @@ include $(XEN_ROOT)/tools/Rules.mk
SUBDIRS-y :=
SUBDIRS-y += domid
+SUBDIRS-y += mem-claim
SUBDIRS-y += paging-mempool
SUBDIRS-y += pdx
SUBDIRS-y += rangeset
diff --git a/tools/tests/mem-claim/.gitignore b/tools/tests/mem-claim/.gitignore
new file mode 100644
index 000000000000..cfcee00b819b
--- /dev/null
+++ b/tools/tests/mem-claim/.gitignore
@@ -0,0 +1 @@
+test-mem-claim
diff --git a/tools/tests/mem-claim/Makefile b/tools/tests/mem-claim/Makefile
new file mode 100644
index 000000000000..76ba3e3c8bef
--- /dev/null
+++ b/tools/tests/mem-claim/Makefile
@@ -0,0 +1,38 @@
+XEN_ROOT = $(CURDIR)/../../..
+include $(XEN_ROOT)/tools/Rules.mk
+
+TARGET := test-mem-claim
+
+.PHONY: all
+all: $(TARGET)
+
+.PHONY: clean
+clean:
+ $(RM) -- *.o $(TARGET) $(DEPS_RM)
+
+.PHONY: distclean
+distclean: clean
+ $(RM) -- *~
+
+.PHONY: install
+install: all
+ $(INSTALL_DIR) $(DESTDIR)$(LIBEXEC)/tests
+ $(INSTALL_PROG) $(TARGET) $(DESTDIR)$(LIBEXEC)/tests
+
+.PHONY: uninstall
+uninstall:
+ $(RM) -- $(DESTDIR)$(LIBEXEC)/tests/$(TARGET)
+
+CFLAGS += $(CFLAGS_xeninclude)
+CFLAGS += $(CFLAGS_libxenctrl)
+CFLAGS += $(APPEND_CFLAGS)
+
+LDFLAGS += $(LDLIBS_libxenctrl)
+LDFLAGS += $(APPEND_LDFLAGS)
+
+%.o: Makefile
+
+$(TARGET): test-mem-claim.o
+ $(CC) -o $@ $< $(LDFLAGS)
+
+-include $(DEPS_INCLUDE)
diff --git a/tools/tests/mem-claim/test-mem-claim.c
b/tools/tests/mem-claim/test-mem-claim.c
new file mode 100644
index 000000000000..78eae9091f52
--- /dev/null
+++ b/tools/tests/mem-claim/test-mem-claim.c
@@ -0,0 +1,190 @@
+#include <err.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/mman.h>
+
+#include <xenctrl.h>
+#include <xenforeignmemory.h>
+#include <xengnttab.h>
+#include <xen-tools/common-macros.h>
+
+static unsigned int nr_failures;
+#define fail(fmt, ...) \
+({ \
+ nr_failures++; \
+ (void)printf(fmt, ##__VA_ARGS__); \
+})
+
+static xc_interface *xch;
+static uint32_t domid = -1;
+
+static xc_physinfo_t physinfo;
+
+static struct xen_domctl_createdomain create = {
+ .flags = XEN_DOMCTL_CDF_hvm | XEN_DOMCTL_CDF_hap,
+ .max_vcpus = 1,
+ .max_grant_frames = 1,
+ .grant_opts = XEN_DOMCTL_GRANT_version(1),
+
+ .arch = {
+#if defined(__x86_64__) || defined(__i386__)
+ .emulation_flags = XEN_X86_EMU_LAPIC,
+#endif
+ },
+};
+
+static void run_tests(void)
+{
+ int rc;
+
+ /*
+ * Check that the system is quiescent. Outstanding claims is a global
+ * field.
+ */
+ rc = xc_physinfo(xch, &physinfo);
+ if ( rc )
+ return fail("Failed to obtain physinfo: %d - %s\n",
+ errno, strerror(errno));
+
+ printf("Free pages: %"PRIu64", Oustanding claims: %"PRIu64"\n",
+ physinfo.free_pages, physinfo.outstanding_pages);
+
+ if ( physinfo.outstanding_pages )
+ return fail(" Test needs running on a quiescent system\n");
+
+ /*
+ * We want any arbitrary domain. Start with HVM/HAP, falling back to
+ * HVM/Shadow and then to PV. The dom0 running this test case is one of
+ * these modes.
+ */
+#if defined(__x86_64__) || defined(__i386__)
+ if ( !(physinfo.capabilities & XEN_SYSCTL_PHYSCAP_hap) )
+ create.flags &= ~XEN_DOMCTL_CDF_hap;
+
+ if ( !(physinfo.capabilities &
(XEN_SYSCTL_PHYSCAP_hap|XEN_SYSCTL_PHYSCAP_shadow)) ||
+ !(physinfo.capabilities & XEN_SYSCTL_PHYSCAP_hvm) )
+ {
+ create.flags &= ~XEN_DOMCTL_CDF_hvm;
+ create.arch.emulation_flags = 0;
+ }
+#endif
+
+ rc = xc_domain_create(xch, &domid, &create);
+ if ( rc )
+ return fail(" Domain create failure: %d - %s\n",
+ errno, strerror(errno));
+
+ rc = xc_domain_setmaxmem(xch, domid, -1);
+ if ( rc )
+ return fail(" Failed to set maxmem: %d - %s\n",
+ errno, strerror(errno));
+
+ printf(" Created d%u\n", domid);
+
+ /*
+ * Creating a domain shouldn't change the claim. Check it's still 0.
+ */
+ rc = xc_physinfo(xch, &physinfo);
+ if ( rc )
+ return fail(" Failed to obtain physinfo: %d - %s\n",
+ errno, strerror(errno));
+
+ if ( physinfo.outstanding_pages )
+ return fail(" Unexpected outstanding claim of %"PRIu64" pages\n",
+ physinfo.outstanding_pages);
+
+ /*
+ * Set a claim for 4M. This should be the only claim in the system, and
+ * show up globally.
+ */
+ rc = xc_domain_claim_pages(xch, domid, 4*1024*1024/4096);
+ if ( rc )
+ return fail(" Failed to claim 4M of RAM: %d - %s\n",
+ errno, strerror(errno));
+
+ rc = xc_physinfo(xch, &physinfo);
+ if ( rc )
+ return fail(" Failed to obtain physinfo: %d - %s\n",
+ errno, strerror(errno));
+
+ if ( physinfo.outstanding_pages != 4*1024*1024/4096 )
+ return fail(" Expected claim to be 4M, got %"PRIu64" pages\n",
+ physinfo.outstanding_pages);
+
+ /*
+ * Allocate 2M of RAM to the domain. This should be deducted from global
+ * claim.
+ */
+ xen_pfn_t ram[] = { 0 };
+ rc = xc_domain_populate_physmap_exact(
+ xch, domid, ARRAY_SIZE(ram), 9, 0, ram);
+ if ( rc )
+ return fail(" Failed to populate physmap domain: %d - %s\n",
+ errno, strerror(errno));
+
+ rc = xc_physinfo(xch, &physinfo);
+ if ( rc )
+ return fail(" Failed to obtain physinfo: %d - %s\n",
+ errno, strerror(errno));
+
+ if ( physinfo.outstanding_pages != 2*1024*1024/4096 )
+ return fail(" Expected claim to be 2M, got %"PRIu64" pages\n",
+ physinfo.outstanding_pages);
+
+ /*
+ * Destroying the domain should release the outstanding 2M claim.
+ */
+ rc = xc_domain_destroy(xch, domid);
+
+ /* Cancel the cleanup path, even in the case of an error. */
+ domid = -1;
+
+ if ( rc )
+ return fail(" Failed to destroy domain: %d - %s\n",
+ errno, strerror(errno));
+
+ rc = xc_physinfo(xch, &physinfo);
+ if ( rc )
+ return fail(" Failed to obtain physinfo: %d - %s\n",
+ errno, strerror(errno));
+
+ if ( physinfo.outstanding_pages )
+ return fail(" Expected no outstanding claim, got %"PRIu64" pages\n",
+ physinfo.outstanding_pages);
+}
+
+int main(int argc, char **argv)
+{
+ int rc;
+
+ printf("Memory claims tests\n");
+
+ xch = xc_interface_open(NULL, NULL, 0);
+
+ if ( !xch )
+ err(1, "xc_interface_open");
+
+ run_tests();
+
+ if ( (int)domid >= 0 )
+ {
+ rc = xc_domain_destroy(xch, domid);
+ if ( rc )
+ fail(" Failed to destroy domain: %d - %s\n",
+ errno, strerror(errno));
+ }
+
+ return !!nr_failures;
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
--
2.39.5
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