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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v12 9/9] tools: CMDs and APIs for Platform QoS Monitoring
Introduced some new xl commands to handle the platform QoS monitoring
related services.
The following two commands is to attach/detach the QoS monitoring
service to/from a certain domain.
$ xl pqos-monitor-attach domid
$ xl pqos-monitor-detach domid
This command is to display the QoS monitoring information, such as CQM,
to show the L3 cache occupancy.
$ xl pqos-monitor-show cache_occupancy <domid>
Signed-off-by: Dongxiao Xu <dongxiao.xu@xxxxxxxxx>
---
docs/man/xl.pod.1 | 24 +++++
tools/libxc/Makefile | 1 +
tools/libxc/xc_msr_x86.h | 36 +++++++
tools/libxc/xc_pqos.c | 219 +++++++++++++++++++++++++++++++++++++++++++
tools/libxc/xenctrl.h | 18 ++++
tools/libxl/Makefile | 2 +-
tools/libxl/libxl.h | 17 ++++
tools/libxl/libxl_pqos.c | 171 +++++++++++++++++++++++++++++++++
tools/libxl/libxl_types.idl | 4 +
tools/libxl/xl.h | 3 +
tools/libxl/xl_cmdimpl.c | 131 ++++++++++++++++++++++++++
tools/libxl/xl_cmdtable.c | 17 ++++
12 files changed, 642 insertions(+), 1 deletion(-)
create mode 100644 tools/libxc/xc_msr_x86.h
create mode 100644 tools/libxc/xc_pqos.c
create mode 100644 tools/libxl/libxl_pqos.c
diff --git a/docs/man/xl.pod.1 b/docs/man/xl.pod.1
index 30bd4bf..9480a86 100644
--- a/docs/man/xl.pod.1
+++ b/docs/man/xl.pod.1
@@ -1366,6 +1366,30 @@ Load FLASK policy from the given policy file. The
initial policy is provided to
the hypervisor as a multiboot module; this command allows runtime updates to
the
policy. Loading new security policy will reset runtime changes to device
labels.
+=head1 PLATFORM QOS MONITORING
+
+Some new hardware may offer monitoring capability in each logical processor to
+measure specific quality-of-service metric. In Xen implementation, the
+monitoring granularity is domain level. To monitor a specific domain, just
+attach the domain id with the monitoring service. When the domain doesn't need
+to be monitored any more, detach the domain id from the monitoring service.
+
+=over 4
+
+=item B<pqos-monitor-attach> [I<domain-id>]
+
+attach: Attach the platform QoS monitoring service to a domain.
+
+=item B<pqos-monitor-detach> [I<domain-id>]
+
+detach: Detach the platform QoS monitoring service from a domain.
+
+=item B<pqos-monitor-show> [I<qos-monitor-type>] [I<domain-id>]
+
+Show monitoring data for a certain domain or all domains. Current supported
+QoS monitor types are:
+ - "cache-occupancy": showing the L3 cache occupancy.
+
=back
=head1 TO BE DOCUMENTED
diff --git a/tools/libxc/Makefile b/tools/libxc/Makefile
index b8b28c1..91e65c4 100644
--- a/tools/libxc/Makefile
+++ b/tools/libxc/Makefile
@@ -35,6 +35,7 @@ CTRL_SRCS-y += xc_kexec.c
CTRL_SRCS-y += xtl_core.c
CTRL_SRCS-y += xtl_logger_stdio.c
CTRL_SRCS-y += xc_resource.c
+CTRL_SRCS-y += xc_pqos.c
CTRL_SRCS-$(CONFIG_X86) += xc_pagetab.c
CTRL_SRCS-$(CONFIG_Linux) += xc_linux.c xc_linux_osdep.c
CTRL_SRCS-$(CONFIG_FreeBSD) += xc_freebsd.c xc_freebsd_osdep.c
diff --git a/tools/libxc/xc_msr_x86.h b/tools/libxc/xc_msr_x86.h
new file mode 100644
index 0000000..1e0ee99
--- /dev/null
+++ b/tools/libxc/xc_msr_x86.h
@@ -0,0 +1,36 @@
+/*
+ * xc_msr_x86.h
+ *
+ * MSR definition macros
+ *
+ * Copyright (C) 2014 Intel Corporation
+ * Author Dongxiao Xu <dongxiao.xu@xxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; version 2.1 only. with the special
+ * exception on linking described in file LICENSE.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ */
+
+#ifndef XC_MSR_X86_H
+#define XC_MSR_X86_H
+
+#define MSR_IA32_QOSEVTSEL 0x00000c8d
+#define MSR_IA32_QMC 0x00000c8e
+
+#endif
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/libxc/xc_pqos.c b/tools/libxc/xc_pqos.c
new file mode 100644
index 0000000..4adf7ef
--- /dev/null
+++ b/tools/libxc/xc_pqos.c
@@ -0,0 +1,219 @@
+/*
+ * xc_pqos.c
+ *
+ * platform QoS related API functions.
+ *
+ * Copyright (C) 2014 Intel Corporation
+ * Author Dongxiao Xu <dongxiao.xu@xxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; version 2.1 only. with the special
+ * exception on linking described in file LICENSE.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ */
+
+#include "xc_private.h"
+#include "xc_msr_x86.h"
+
+#define IA32_QM_CTR_ERROR_MASK (0x3ull << 62)
+
+#define EVTID_L3_OCCUPANCY 0x1
+
+int xc_pqos_monitor_attach(xc_interface *xch, uint32_t domid)
+{
+ DECLARE_DOMCTL;
+
+ domctl.cmd = XEN_DOMCTL_pqos_monitor_op;
+ domctl.domain = (domid_t)domid;
+ domctl.u.pqos_monitor_op.cmd = XEN_DOMCTL_PQOS_MONITOR_OP_ATTACH;
+
+ return do_domctl(xch, &domctl);
+}
+
+int xc_pqos_monitor_detach(xc_interface *xch, uint32_t domid)
+{
+ DECLARE_DOMCTL;
+
+ domctl.cmd = XEN_DOMCTL_pqos_monitor_op;
+ domctl.domain = (domid_t)domid;
+ domctl.u.pqos_monitor_op.cmd = XEN_DOMCTL_PQOS_MONITOR_OP_DETACH;
+
+ return do_domctl(xch, &domctl);
+}
+
+int xc_pqos_monitor_get_domain_rmid(xc_interface *xch, uint32_t domid,
+ uint32_t *rmid)
+{
+ int rc;
+ DECLARE_DOMCTL;
+
+ domctl.cmd = XEN_DOMCTL_pqos_monitor_op;
+ domctl.domain = (domid_t)domid;
+ domctl.u.pqos_monitor_op.cmd = XEN_DOMCTL_PQOS_MONITOR_OP_QUERY_RMID;
+
+ rc = do_domctl(xch, &domctl);
+
+ *rmid = domctl.u.pqos_monitor_op.data;
+
+ return rc;
+}
+
+int xc_pqos_monitor_get_total_rmid(xc_interface *xch, uint32_t *total_rmid)
+{
+ static int val = 0;
+ int rc;
+ DECLARE_SYSCTL;
+
+ if ( val )
+ {
+ *total_rmid = val;
+ return 0;
+ }
+
+ sysctl.cmd = XEN_SYSCTL_pqos_monitor_op;
+ sysctl.u.pqos_monitor_op.cmd = XEN_SYSCTL_PQOS_MONITOR_get_total_rmid;
+
+ rc = xc_sysctl(xch, &sysctl);
+ if ( !rc )
+ val = *total_rmid = sysctl.u.pqos_monitor_op.data;
+
+ return rc;
+}
+
+int xc_pqos_monitor_get_l3_upscaling_factor(xc_interface *xch,
+ uint32_t *upscaling_factor)
+{
+ static int val = 0;
+ int rc;
+ DECLARE_SYSCTL;
+
+ if ( val )
+ {
+ *upscaling_factor = val;
+ return 0;
+ }
+
+ sysctl.cmd = XEN_SYSCTL_pqos_monitor_op;
+ sysctl.u.pqos_monitor_op.cmd =
+ XEN_SYSCTL_PQOS_MONITOR_get_l3_upscaling_factor;
+
+ rc = xc_sysctl(xch, &sysctl);
+ if ( !rc )
+ val = *upscaling_factor = sysctl.u.pqos_monitor_op.data;
+
+ return rc;
+}
+
+int xc_pqos_monitor_get_l3_cache_size(xc_interface *xch,
+ uint32_t *l3_cache_size)
+{
+ static int val = 0;
+ int rc;
+ DECLARE_SYSCTL;
+
+ if ( val )
+ {
+ *l3_cache_size = val;
+ return 0;
+ }
+
+ sysctl.cmd = XEN_SYSCTL_pqos_monitor_op;
+ sysctl.u.pqos_monitor_op.cmd =
+ XEN_SYSCTL_PQOS_MONITOR_get_l3_cache_size;
+
+ rc = xc_sysctl(xch, &sysctl);
+ if ( !rc )
+ val = *l3_cache_size= sysctl.u.pqos_monitor_op.data;
+
+ return rc;
+}
+
+int xc_pqos_monitor_select_socket_cpu(xc_interface *xch, uint32_t socket)
+{
+ int rc;
+ DECLARE_SYSCTL;
+
+ sysctl.cmd = XEN_SYSCTL_pqos_monitor_op;
+ sysctl.u.pqos_monitor_op.cmd = XEN_SYSCTL_PQOS_MONITOR_get_socket_cpu;
+ sysctl.u.pqos_monitor_op.data = socket;
+
+ rc = do_sysctl(xch, &sysctl);
+ if ( !rc )
+ return sysctl.u.pqos_monitor_op.data;
+
+ return -1;
+}
+
+int xc_pqos_monitor_get_data(xc_interface *xch, uint32_t rmid,
+ uint32_t cpu, xc_pqos_monitor_type type, uint64_t *monitor_data)
+{
+ xc_resource_data_t rsc_data[2];
+ uint32_t evtid;
+ int rc;
+
+ switch ( type )
+ {
+ case XC_PQOS_MONITOR_L3_OCCUPANCY:
+ evtid = EVTID_L3_OCCUPANCY;
+ break;
+ default:
+ return -1;
+ }
+
+ rsc_data[0].cmd = XEN_RESOURCE_OP_WRITE;
+ rsc_data[0].cpu = cpu;
+ rsc_data[0].idx = MSR_IA32_QOSEVTSEL;
+ rsc_data[0].val = (uint64_t)rmid << 32 | evtid;
+ rsc_data[1].cmd = XEN_RESOURCE_OP_READ;
+ rsc_data[1].cpu = cpu;
+ rsc_data[1].idx = MSR_IA32_QMC;
+ rsc_data[1].val = 0;
+
+ rc = xc_resource_op(xch, 2, XEN_RESOURCE_TYPE_MSR, rsc_data);
+ if ( rc )
+ return rc;
+
+ if ( rsc_data[1].val & IA32_QM_CTR_ERROR_MASK )
+ return -1;
+
+ *monitor_data = rsc_data[1].val;
+
+ return 0;
+}
+
+int xc_pqos_monitor_cqm_enabled(xc_interface *xch)
+{
+ static int val = -1;
+ int rc;
+ DECLARE_SYSCTL;
+
+ if ( val >= 0 )
+ return val;
+
+ sysctl.cmd = XEN_SYSCTL_pqos_monitor_op;
+ sysctl.u.pqos_monitor_op.cmd = XEN_SYSCTL_PQOS_MONITOR_cqm_enabled;
+
+ rc = do_sysctl(xch, &sysctl);
+ if ( !rc )
+ {
+ val = sysctl.u.pqos_monitor_op.data;
+ return val;
+ }
+
+ return 0;
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/libxc/xenctrl.h b/tools/libxc/xenctrl.h
index ca0b207..08ee12f 100644
--- a/tools/libxc/xenctrl.h
+++ b/tools/libxc/xenctrl.h
@@ -2608,6 +2608,24 @@ typedef xenpf_resource_data_t xc_resource_data_t;
int xc_resource_op(xc_interface *xch, uint32_t nr,
uint32_t type, xc_resource_data_t *data);
+enum xc_pqos_monitor_type {
+ XC_PQOS_MONITOR_L3_OCCUPANCY,
+};
+typedef enum xc_pqos_monitor_type xc_pqos_monitor_type;
+int xc_pqos_monitor_attach(xc_interface *xch, uint32_t domid);
+int xc_pqos_monitor_detach(xc_interface *xch, uint32_t domid);
+int xc_pqos_monitor_get_domain_rmid(xc_interface *xch, uint32_t domid,
+ uint32_t *rmid);
+int xc_pqos_monitor_get_total_rmid(xc_interface *xch, uint32_t *total_rmid);
+int xc_pqos_monitor_get_l3_upscaling_factor(xc_interface *xch,
+ uint32_t *upscaling_factor);
+int xc_pqos_monitor_get_l3_cache_size(xc_interface *xch,
+ uint32_t *l3_cache_size);
+int xc_pqos_monitor_select_socket_cpu(xc_interface *xch, uint32_t socket);
+int xc_pqos_monitor_get_data(xc_interface *xch, uint32_t rmid,
+ uint32_t cpu, uint32_t pqos_monitor_type, uint64_t *monitor_data);
+int xc_pqos_monitor_cqm_enabled(xc_interface *xch);
+
#endif /* XENCTRL_H */
/*
diff --git a/tools/libxl/Makefile b/tools/libxl/Makefile
index 7fc42c8..14cdd54 100644
--- a/tools/libxl/Makefile
+++ b/tools/libxl/Makefile
@@ -43,7 +43,7 @@ LIBXL_OBJS-y += libxl_blktap2.o
else
LIBXL_OBJS-y += libxl_noblktap2.o
endif
-LIBXL_OBJS-$(CONFIG_X86) += libxl_cpuid.o libxl_x86.o
+LIBXL_OBJS-$(CONFIG_X86) += libxl_cpuid.o libxl_x86.o libxl_pqos.o
LIBXL_OBJS-$(CONFIG_ARM) += libxl_nocpuid.o libxl_arm.o
ifeq ($(CONFIG_NetBSD),y)
diff --git a/tools/libxl/libxl.h b/tools/libxl/libxl.h
index 69ceac8..f510ade 100644
--- a/tools/libxl/libxl.h
+++ b/tools/libxl/libxl.h
@@ -533,6 +533,13 @@ typedef uint8_t libxl_mac[6];
#define LIBXL_MAC_FMTLEN ((2*6)+5) /* 6 hex bytes plus 5 colons */
#define LIBXL_MAC_BYTES(mac) mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]
+/*
+ * LIBXL_HAVE_PQOS_MONITOR_CQM
+ *
+ * If this is defined, the cache QoS monitoring feature is suported.
+ */
+#define LIBXL_HAVE_PQOS_MONITOR_CQM 1
+
typedef char **libxl_string_list;
void libxl_string_list_dispose(libxl_string_list *sl);
int libxl_string_list_length(const libxl_string_list *sl);
@@ -1217,6 +1224,16 @@ int libxl_flask_getenforce(libxl_ctx *ctx);
int libxl_flask_setenforce(libxl_ctx *ctx, int mode);
int libxl_flask_loadpolicy(libxl_ctx *ctx, void *policy, uint32_t size);
+int libxl_pqos_monitor_attach(libxl_ctx *ctx, uint32_t domid);
+int libxl_pqos_monitor_detach(libxl_ctx *ctx, uint32_t domid);
+int libxl_pqos_monitor_domain_attached(libxl_ctx *ctx, uint32_t domid);
+int libxl_pqos_monitor_cqm_enabled(libxl_ctx *ctx);
+int libxl_pqos_monitor_get_total_rmid(libxl_ctx *ctx, uint32_t *total_rmid);
+int libxl_pqos_monitor_get_l3_cache_size(libxl_ctx *ctx,
+ uint32_t *l3_cache_size);
+int libxl_pqos_monitor_get_cache_occupancy(libxl_ctx *ctx, uint32_t domid,
+ uint32_t socketid, uint64_t *l3_cache_occupancy);
+
/* misc */
/* Each of these sets or clears the flag according to whether the
diff --git a/tools/libxl/libxl_pqos.c b/tools/libxl/libxl_pqos.c
new file mode 100644
index 0000000..8c56e67
--- /dev/null
+++ b/tools/libxl/libxl_pqos.c
@@ -0,0 +1,171 @@
+/*
+ * Copyright (C) 2014 Intel Corporation
+ * Author Dongxiao Xu <dongxiao.xu@xxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; version 2.1 only. with the special
+ * exception on linking described in file LICENSE.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ */
+
+#include "libxl_osdeps.h" /* must come before any other headers */
+#include "libxl_internal.h"
+
+
+#define IA32_QM_CTR_ERROR_MASK (0x3ul << 62)
+
+static const char * const msg[] = {
+ [ENOSYS] = "unsupported operation",
+ [ENODEV] = "Platform QoS Monitoring is not supported in this system",
+ [EEXIST] = "Platform QoS Monitoring is already attached to this domain",
+ [ENOENT] = "Platform QoS Monitoring is not attached to this domain",
+ [EUSERS] = "there is no free RMID available",
+ [ESRCH] = "is this Domain ID valid?",
+ [EFAULT] = "cannot find a valid CPU belonging to this socket",
+};
+
+static void libxl_pqos_monitor_err_msg(libxl_ctx *ctx, int err)
+{
+ GC_INIT(ctx);
+
+ switch (err) {
+ case EINVAL:
+ case ENODEV:
+ case EEXIST:
+ case EUSERS:
+ case ESRCH:
+ case ENOENT:
+ LOGE(ERROR, "%s", msg[err]);
+ break;
+ default:
+ LOGE(ERROR, "errno: %d", err);
+ }
+
+ GC_FREE;
+}
+
+int libxl_pqos_monitor_attach(libxl_ctx *ctx, uint32_t domid)
+{
+ int rc;
+
+ rc = xc_pqos_monitor_attach(ctx->xch, domid);
+ if (rc < 0) {
+ libxl_pqos_monitor_err_msg(ctx, errno);
+ return ERROR_FAIL;
+ }
+
+ return 0;
+}
+
+int libxl_pqos_monitor_detach(libxl_ctx *ctx, uint32_t domid)
+{
+ int rc;
+
+ rc = xc_pqos_monitor_detach(ctx->xch, domid);
+ if (rc < 0) {
+ libxl_pqos_monitor_err_msg(ctx, errno);
+ return ERROR_FAIL;
+ }
+
+ return 0;
+}
+
+int libxl_pqos_monitor_domain_attached(libxl_ctx *ctx, uint32_t domid)
+{
+ int rc;
+ uint32_t rmid;
+
+ rc = xc_pqos_monitor_get_domain_rmid(ctx->xch, domid, &rmid);
+ if (rc < 0)
+ return 0;
+
+ return !!rmid;
+}
+
+int libxl_pqos_monitor_cqm_enabled(libxl_ctx *ctx)
+{
+ return xc_pqos_monitor_cqm_enabled(ctx->xch);
+}
+
+int libxl_pqos_monitor_get_total_rmid(libxl_ctx *ctx, uint32_t *total_rmid)
+{
+ int rc;
+
+ rc = xc_pqos_monitor_get_total_rmid(ctx->xch, total_rmid);
+ if (rc < 0) {
+ libxl_pqos_monitor_err_msg(ctx, errno);
+ return ERROR_FAIL;
+ }
+
+ return 0;
+}
+
+int libxl_pqos_monitor_get_l3_cache_size(libxl_ctx *ctx,
+ uint32_t *l3_cache_size)
+{
+ int rc;
+
+ rc = xc_pqos_monitor_get_l3_cache_size(ctx->xch, l3_cache_size);
+ if (rc < 0) {
+ libxl_pqos_monitor_err_msg(ctx, errno);
+ return ERROR_FAIL;
+ }
+
+ return 0;
+}
+
+int libxl_pqos_monitor_get_cache_occupancy(libxl_ctx *ctx, uint32_t domid,
+ uint32_t socketid, uint64_t *l3_cache_occupancy)
+{
+ GC_INIT(ctx);
+
+ unsigned int rmid;
+ uint32_t upscaling_factor;
+ uint64_t monitor_data;
+ int cpu, rc;
+ xc_pqos_monitor_type type;
+
+ rc = xc_pqos_monitor_get_domain_rmid(ctx->xch, domid, &rmid);
+ if (rc < 0 || rmid == 0) {
+ LOGE(ERROR, "fail to get the domain rmid, "
+ "or domain is not attached with platform QoS monitoring service");
+ return ERROR_FAIL;
+ }
+
+ cpu = xc_pqos_monitor_select_socket_cpu(ctx->xch, socketid);
+ if (cpu < 0) {
+ LOGE(ERROR, "fail to select a cpu from socket %d", socketid);
+ return ERROR_FAIL;
+ }
+
+ type = XC_PQOS_MONITOR_L3_OCCUPANCY;
+ rc = xc_pqos_monitor_get_data(ctx->xch, rmid, cpu, type, &monitor_data);
+ if (rc < 0) {
+ LOGE(ERROR, "failed to get monitoring data");
+ return ERROR_FAIL;
+ }
+
+ rc = xc_pqos_monitor_get_l3_upscaling_factor(ctx->xch, &upscaling_factor);
+ if (rc < 0) {
+ LOGE(ERROR, "failed to get L3 upscaling factor");
+ return ERROR_FAIL;
+ }
+
+ *l3_cache_occupancy = upscaling_factor * monitor_data;
+
+ GC_FREE;
+ return 0;
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/libxl/libxl_types.idl b/tools/libxl/libxl_types.idl
index 1018142..2e7668b 100644
--- a/tools/libxl/libxl_types.idl
+++ b/tools/libxl/libxl_types.idl
@@ -604,3 +604,7 @@ libxl_event = Struct("event",[
])),
("domain_create_console_available", None),
]))])
+
+libxl_pqos_monitor_type = Enumeration("pqos_monitor_type", [
+ (1, "CACHE_OCCUPANCY"),
+ ])
diff --git a/tools/libxl/xl.h b/tools/libxl/xl.h
index 10a2e66..4e9635a 100644
--- a/tools/libxl/xl.h
+++ b/tools/libxl/xl.h
@@ -110,6 +110,9 @@ int main_loadpolicy(int argc, char **argv);
int main_remus(int argc, char **argv);
#endif
int main_devd(int argc, char **argv);
+int main_pqos_monitor_attach(int argc, char **argv);
+int main_pqos_monitor_detach(int argc, char **argv);
+int main_pqos_monitor_show(int argc, char **argv);
void help(const char *command);
diff --git a/tools/libxl/xl_cmdimpl.c b/tools/libxl/xl_cmdimpl.c
index be041f2..ef049b5 100644
--- a/tools/libxl/xl_cmdimpl.c
+++ b/tools/libxl/xl_cmdimpl.c
@@ -7303,6 +7303,137 @@ out:
return ret;
}
+static int pqos_monitor_show_cache_occupancy(uint32_t first_domain,
+ uint32_t nr_domains,
+ int ignore_domain_err)
+{
+ uint32_t domid, socketid, nr_sockets, total_rmid, l3_cache_size;
+ uint64_t l3_cache_occupancy;
+ libxl_physinfo info;
+ char *domain_name;
+ int rc, print_header;
+
+ if (!libxl_pqos_monitor_cqm_enabled(ctx)) {
+ printf("CQM is not supported in the system\n");
+ return -1;
+ }
+
+ rc = libxl_get_physinfo(ctx, &info);
+ if (rc < 0) {
+ printf("failed to get system socket number\n");
+ return -1;
+ }
+ nr_sockets = info.nr_cpus / info.threads_per_core / info.cores_per_socket;
+
+ rc = libxl_pqos_monitor_get_total_rmid(ctx, &total_rmid);
+ if (rc < 0) {
+ printf("failed to get system total rmid number\n");
+ return -1;
+ }
+
+ rc = libxl_pqos_monitor_get_l3_cache_size(ctx, &l3_cache_size);
+ if (rc < 0) {
+ printf("failed to get system l3 cache size\n");
+ return -1;
+ }
+
+ printf("Total RMID: %d\n", total_rmid);
+ printf("Per-Socket L3 Cache Size: %d KB\n", l3_cache_size);
+
+ print_header = 1;
+ for (domid = first_domain; domid < first_domain + nr_domains; domid++) {
+ if (!libxl_pqos_monitor_domain_attached(ctx, domid)) {
+ if (!ignore_domain_err)
+ printf("No CQM info for Domain %d.\n", domid);
+ continue;
+ }
+ if (print_header) {
+ printf("Name ID");
+ for (socketid = 0; socketid < nr_sockets; socketid++)
+ printf("\tSocketID\tL3C_Usage");
+ printf("\n");
+ print_header = 0;
+ }
+ domain_name = libxl_domid_to_name(ctx, domid);
+ printf("%-40s %5d", domain_name, domid);
+ free(domain_name);
+ for (socketid = 0; socketid < nr_sockets; socketid++) {
+ rc = libxl_pqos_monitor_get_cache_occupancy(ctx, domid, socketid,
+ &l3_cache_occupancy);
+ printf("%10u %13lu KB ", socketid, l3_cache_occupancy/1024);
+ }
+ printf("\n");
+ }
+
+ return 0;
+}
+
+int main_pqos_monitor_attach(int argc, char **argv)
+{
+ uint32_t domid;
+ int opt, ret = 0;
+
+ SWITCH_FOREACH_OPT(opt, "", NULL, "pqos-monitor-attach", 1) {
+ /* No options */
+ }
+
+ domid = find_domain(argv[optind]);
+ ret = libxl_pqos_monitor_attach(ctx, domid);
+
+ return ret;
+}
+
+int main_pqos_monitor_detach(int argc, char **argv)
+{
+ uint32_t domid;
+ int opt, ret = 0;
+
+ SWITCH_FOREACH_OPT(opt, "", NULL, "pqos-monitor-detach", 1) {
+ /* No options */
+ }
+
+ domid = find_domain(argv[optind]);
+ ret = libxl_pqos_monitor_detach(ctx, domid);
+
+ return ret;
+}
+
+int main_pqos_monitor_show(int argc, char **argv)
+{
+ int opt, ret = 0;
+ uint32_t first_domain, nr_domains;
+ libxl_pqos_monitor_type type;
+
+ SWITCH_FOREACH_OPT(opt, "", NULL, "pqos-monitor-show", 1) {
+ /* No options */
+ }
+
+ libxl_pqos_monitor_type_from_string(argv[optind], &type);
+
+ if (optind + 1 >= argc) {
+ first_domain = 0;
+ nr_domains = 1024;
+ } else if (optind + 1 == argc - 1){
+ first_domain = find_domain(argv[optind + 1]);
+ nr_domains = 1;
+ } else {
+ help("pqos-monitor-show");
+ return 2;
+ }
+
+ switch (type) {
+ case LIBXL_PQOS_MONITOR_TYPE_CACHE_OCCUPANCY:
+ ret = pqos_monitor_show_cache_occupancy(first_domain, nr_domains,
+ nr_domains == 1024);
+ break;
+ default:
+ help("pqos-monitor-show");
+ return 2;
+ }
+
+ return ret;
+}
+
/*
* Local variables:
* mode: C
diff --git a/tools/libxl/xl_cmdtable.c b/tools/libxl/xl_cmdtable.c
index 4279b9f..a2f8e9a 100644
--- a/tools/libxl/xl_cmdtable.c
+++ b/tools/libxl/xl_cmdtable.c
@@ -500,6 +500,23 @@ struct cmd_spec cmd_table[] = {
"[options]",
"-F Run in the foreground",
},
+ { "pqos-monitor-attach",
+ &main_pqos_monitor_attach, 0, 1,
+ "Attach platform QoS monitoring to a domain",
+ "<Domain>",
+ },
+ { "pqos-monitor-detach",
+ &main_pqos_monitor_detach, 0, 1,
+ "Detach platform QoS monitoring from a domain",
+ "<Domain>",
+ },
+ { "pqos-monitor-show",
+ &main_pqos_monitor_show, 0, 1,
+ "Show platform QoS monitoring information, current supported QoS monitor
"
+ "types are:\n"
+ "\"cache_occupancy\": cache QoS monitoring, showing the L3 cache
occupancy",
+ "<QoS-Monitor-Type> <Domain>",
+ },
};
int cmdtable_len = sizeof(cmd_table)/sizeof(struct cmd_spec);
--
1.7.9.5
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