@@ -416,6 +416,10 @@ qapi-modules = $(SRC_PATH)/qapi-schema.json $(SRC_PATH)/qapi/common.json \
$(SRC_PATH)/qapi/crypto.json $(SRC_PATH)/qapi/rocker.json \
$(SRC_PATH)/qapi/trace.json
+ifdef CONFIG_VIRTFS
+qapi-modules += $(SRC_PATH)/qapi/fsdev.json
+endif
+
qapi-types.c qapi-types.h :\
$(qapi-modules) $(SRC_PATH)/scripts/qapi-types.py $(qapi-py)
$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-types.py \
@@ -14,8 +14,19 @@
#include "qemu-fsdev.h"
#include "qemu/config-file.h"
#include "qemu/module.h"
+#include "qmp-commands.h"
int qemu_fsdev_add(QemuOpts *opts)
{
return 0;
}
+
+void qmp_fsdev_set_io_throttle(IOThrottle *arg, Error **errp)
+{
+ return;
+}
+
+IOThrottleList *qmp_query_fsdev_io_throttle(Error **errp)
+{
+ return NULL;
+}
@@ -16,6 +16,7 @@
#include "qemu/error-report.h"
#include "qemu-fsdev-throttle.h"
#include "qemu/iov.h"
+#include "qemu/main-loop.h"
#include "qemu/throttle-options.h"
static void fsdev_throttle_read_timer_cb(void *opaque)
@@ -30,6 +31,81 @@ static void fsdev_throttle_write_timer_cb(void *opaque)
qemu_co_enter_next(&fst->throttled_reqs[true]);
}
+void fsdev_set_io_throttle(IOThrottle *arg, FsThrottle *fst, Error **errp)
+{
+ ThrottleConfig cfg;
+
+ throttle_set_io_limits(&cfg, arg);
+
+ if (throttle_is_valid(&cfg, errp)) {
+ fst->cfg = cfg;
+ fsdev_throttle_init(fst);
+ }
+}
+
+void fsdev_get_io_throttle(FsThrottle *fst, IOThrottle **fs9pcfg,
+ char *fsdevice, Error **errp)
+{
+
+ ThrottleConfig cfg = fst->cfg;
+ IOThrottle *fscfg = g_malloc0(sizeof(*fscfg));
+
+ fscfg->has_id = true;
+ fscfg->id = g_strdup(fsdevice);
+ fscfg->bps = cfg.buckets[THROTTLE_BPS_TOTAL].avg;
+ fscfg->bps_rd = cfg.buckets[THROTTLE_BPS_READ].avg;
+ fscfg->bps_wr = cfg.buckets[THROTTLE_BPS_WRITE].avg;
+
+ fscfg->iops = cfg.buckets[THROTTLE_OPS_TOTAL].avg;
+ fscfg->iops_rd = cfg.buckets[THROTTLE_OPS_READ].avg;
+ fscfg->iops_wr = cfg.buckets[THROTTLE_OPS_WRITE].avg;
+
+ fscfg->has_bps_max = cfg.buckets[THROTTLE_BPS_TOTAL].max;
+ fscfg->bps_max = cfg.buckets[THROTTLE_BPS_TOTAL].max;
+ fscfg->has_bps_rd_max = cfg.buckets[THROTTLE_BPS_READ].max;
+ fscfg->bps_rd_max = cfg.buckets[THROTTLE_BPS_READ].max;
+ fscfg->has_bps_wr_max = cfg.buckets[THROTTLE_BPS_WRITE].max;
+ fscfg->bps_wr_max = cfg.buckets[THROTTLE_BPS_WRITE].max;
+
+ fscfg->has_iops_max = cfg.buckets[THROTTLE_OPS_TOTAL].max;
+ fscfg->iops_max = cfg.buckets[THROTTLE_OPS_TOTAL].max;
+ fscfg->has_iops_rd_max = cfg.buckets[THROTTLE_OPS_READ].max;
+ fscfg->iops_rd_max = cfg.buckets[THROTTLE_OPS_READ].max;
+ fscfg->has_iops_wr_max = cfg.buckets[THROTTLE_OPS_WRITE].max;
+ fscfg->iops_wr_max = cfg.buckets[THROTTLE_OPS_WRITE].max;
+
+ fscfg->has_bps_max_length = fscfg->has_bps_max;
+ fscfg->bps_max_length =
+ cfg.buckets[THROTTLE_BPS_TOTAL].burst_length;
+ fscfg->has_bps_rd_max_length = fscfg->has_bps_rd_max;
+ fscfg->bps_rd_max_length =
+ cfg.buckets[THROTTLE_BPS_READ].burst_length;
+ fscfg->has_bps_wr_max_length = fscfg->has_bps_wr_max;
+ fscfg->bps_wr_max_length =
+ cfg.buckets[THROTTLE_BPS_WRITE].burst_length;
+
+ fscfg->has_iops_max_length = fscfg->has_iops_max;
+ fscfg->iops_max_length =
+ cfg.buckets[THROTTLE_OPS_TOTAL].burst_length;
+ fscfg->has_iops_rd_max_length = fscfg->has_iops_rd_max;
+ fscfg->iops_rd_max_length =
+ cfg.buckets[THROTTLE_OPS_READ].burst_length;
+ fscfg->has_iops_wr_max_length = fscfg->has_iops_wr_max;
+ fscfg->iops_wr_max_length =
+ cfg.buckets[THROTTLE_OPS_WRITE].burst_length;
+
+ fscfg->bps_max_length = cfg.buckets[THROTTLE_BPS_TOTAL].burst_length;
+ fscfg->bps_rd_max_length = cfg.buckets[THROTTLE_BPS_READ].burst_length;
+ fscfg->bps_wr_max_length = cfg.buckets[THROTTLE_BPS_WRITE].burst_length;
+ fscfg->iops_max_length = cfg.buckets[THROTTLE_OPS_TOTAL].burst_length;
+ fscfg->iops_rd_max_length = cfg.buckets[THROTTLE_OPS_READ].burst_length;
+ fscfg->iops_wr_max_length = cfg.buckets[THROTTLE_OPS_WRITE].burst_length;
+
+ fscfg->iops_size = cfg.op_size;
+
+ *fs9pcfg = fscfg;
+}
+
void fsdev_throttle_parse_opts(QemuOpts *opts, FsThrottle *fst, Error **errp)
{
throttle_parse_options(&fst->cfg, opts);
@@ -15,8 +15,6 @@
#ifndef _FSDEV_THROTTLE_H
#define _FSDEV_THROTTLE_H
-#include "block/aio.h"
-#include "qemu/main-loop.h"
#include "qemu/coroutine.h"
#include "qapi/error.h"
#include "qemu/throttle.h"
@@ -36,4 +34,10 @@ void coroutine_fn fsdev_co_throttle_request(FsThrottle *, bool ,
struct iovec *, int);
void fsdev_throttle_cleanup(FsThrottle *);
+
+void fsdev_set_io_throttle(IOThrottle *, FsThrottle *, Error **errp);
+
+void fsdev_get_io_throttle(FsThrottle *, IOThrottle **iothp,
+ char *, Error **errp);
+
#endif /* _FSDEV_THROTTLE_H */
@@ -16,6 +16,7 @@
#include "qemu-common.h"
#include "qemu/config-file.h"
#include "qemu/error-report.h"
+#include "qmp-commands.h"
static QTAILQ_HEAD(FsDriverEntry_head, FsDriverListEntry) fsdriver_entries =
QTAILQ_HEAD_INITIALIZER(fsdriver_entries);
@@ -98,3 +99,40 @@ FsDriverEntry *get_fsdev_fsentry(char *id)
}
return NULL;
}
+
+void qmp_fsdev_set_io_throttle(IOThrottle *arg, Error **errp)
+{
+
+ FsDriverEntry *fse;
+
+ fse = get_fsdev_fsentry(arg->has_id ? arg->id : NULL);
+ if (!fse) {
+ error_setg(errp, "Not a valid fsdev device");
+ return;
+ }
+
+ fsdev_set_io_throttle(arg, &fse->fst, errp);
+}
+
+IOThrottleList *qmp_query_fsdev_io_throttle(Error **errp)
+{
+ IOThrottleList *head = NULL, *p_next;
+ struct FsDriverListEntry *fsle;
+ Error *local_err = NULL;
+
+ QTAILQ_FOREACH(fsle, &fsdriver_entries, next) {
+ p_next = g_new0(IOThrottleList, 1);
+ fsdev_get_io_throttle(&fsle->fse.fst, &p_next->value,
+ fsle->fse.fsdev_id, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ g_free(p_next);
+ qapi_free_IOThrottleList(head);
+ return NULL;
+ }
+
+ p_next->next = head;
+ head = p_next;
+ }
+ return head;
+}
@@ -998,6 +998,11 @@ static void qmp_unregister_commands_hack(void)
&& !defined(TARGET_S390X)
qmp_unregister_command(&qmp_commands, "query-cpu-definitions");
#endif
+#ifndef CONFIG_VIRTFS
+ qmp_unregister_command(&qmp_commands, "fsdev-set-io-throttle");
+ qmp_unregister_command(&qmp_commands, "query-fsdev-io-throttle");
+#endif
+
}
void monitor_init_qmp_commands(void)
@@ -81,6 +81,9 @@
# QAPI block definitions
{ 'include': 'qapi/block.json' }
+# QAPI fsdev definitions
+{ 'include': 'qapi/fsdev.json' }
+
# QAPI event definitions
{ 'include': 'qapi/event.json' }
new file mode 100644
@@ -0,0 +1,84 @@
+# -*- Mode: Python -*-
+
+##
+# == QAPI fsdev definitions
+##
+
+# QAPI common definitions
+{ 'include': 'iothrottle.json' }
+
+##
+# @fsdev-set-io-throttle:
+#
+# Change I/O limits for a 9p/fsdev device.
+#
+# I/O limits can be enabled by setting throttle value to non-zero number.
+#
+# I/O limits can be disabled by setting all throttle values to 0.
+#
+# Returns: Nothing on success
+# If @device is not a valid fsdev device, GenericError
+#
+# Since: 2.10
+#
+# Example:
+#
+# -> { "execute": "fsdev-set-io-throttle",
+# "arguments": { "id": "id0-1-0",
+# "bps": 1000000,
+# "bps_rd": 0,
+# "bps_wr": 0,
+# "iops": 0,
+# "iops_rd": 0,
+# "iops_wr": 0,
+# "bps_max": 8000000,
+# "bps_rd_max": 0,
+# "bps_wr_max": 0,
+# "iops_max": 0,
+# "iops_rd_max": 0,
+# "iops_wr_max": 0,
+# "bps_max_length": 60,
+# "iops_size": 0 } }
+# <- { "returns": {} }
+##
+{ 'command': 'fsdev-set-io-throttle', 'boxed': true,
+ 'data': 'IOThrottle' }
+##
+# @query-fsdev-io-throttle:
+#
+# Returns: a list of @IOThrottle describing I/O throttle
+# values of each fsdev device
+#
+# Since: 2.10
+#
+# Example:
+#
+# -> { "Execute": "query-fsdev-io-throttle" }
+# <- { "returns" : [
+# {
+# "id": "id0-hd0",
+# "bps":1000000,
+# "bps_rd":0,
+# "bps_wr":0,
+# "iops":1000000,
+# "iops_rd":0,
+# "iops_wr":0,
+# "bps_max": 8000000,
+# "bps_rd_max": 0,
+# "bps_wr_max": 0,
+# "iops_max": 0,
+# "iops_rd_max": 0,
+# "iops_wr_max": 0,
+# "bps_max_length": 0,
+# "bps_rd_max_length": 0,
+# "bps_wr_max_length": 0,
+# "iops_max_length": 0,
+# "iops_rd_max_length": 0,
+# "iops_wr_max_length": 0,
+# "iops_size": 0
+# }
+# ]
+# }
+#
+##
+{ 'command': 'query-fsdev-io-throttle', 'returns': [ 'IOThrottle' ] }
@@ -130,6 +130,20 @@ void qmp_cpu_add(int64_t id, Error **errp)
}
}
+#if defined(_WIN64) || defined(_WIN32) || defined(__FreeBSD__)
+
+void qmp_fsdev_set_io_throttle(IOThrottle *arg, Error **errp)
+{
+ return;
+}
+
+IOThrottleList *qmp_query_fsdev_io_throttle(Error **errp)
+{
+ return NULL;
+}
+
+#endif
+
#ifndef CONFIG_VNC
/* If VNC support is enabled, the "true" query-vnc command is
defined in the VNC subsystem */
This patch introduces qmp interfaces for the fsdev devices. This provides two interfaces one for querying info of all the fsdev devices. The second one to set the IO limits for the required fsdev device. Signed-off-by: Pradeep Jagadeesh <pradeep.jagadeesh@huawei.com> --- Makefile | 4 +++ fsdev/qemu-fsdev-dummy.c | 11 ++++++ fsdev/qemu-fsdev-throttle.c | 76 ++++++++++++++++++++++++++++++++++++++++ fsdev/qemu-fsdev-throttle.h | 8 +++-- fsdev/qemu-fsdev.c | 38 ++++++++++++++++++++ monitor.c | 5 +++ qapi-schema.json | 3 ++ qapi/fsdev.json | 84 +++++++++++++++++++++++++++++++++++++++++++++ qmp.c | 14 ++++++++ 9 files changed, 241 insertions(+), 2 deletions(-) create mode 100644 qapi/fsdev.json