On Wed, 21 Jun 2017 10:34:42 +0200 Pradeep Jagadeesh <pradeep.jagade...@huawei.com> wrote:
> On 6/20/2017 6:05 PM, Greg Kurz wrote:
> > On Mon, 19 Jun 2017 09:11:34 -0400
> > Pradeep Jagadeesh <pradeepkiruv...@gmail.com> wrote:
> >
> >> This patch factor out the duplicate qmp throttle interface code
> >> that was present in both block and fsdev device files.
> >>
> >
> > The text is obviously wrong. I don't see any duplicate code below.
> OK, I will fix this.
> >
> > It is more something like: let's factor out the code that will be used
> > by the existing QMP throttling API for block devices and the future
> > QMP throttling API for fs devices.
> >
> > Please move the HMP part to another patch, as asked during v4 review.
> I have moved the hmp patches for the fsdev into a separate patch. Do you
> want me to push this also into a separate patch?
Yes. These changes aren't related and theoretically belong to separate
sub-maintainer trees.
> >
> > Also, blockdev.c and hmp.c do have maintainers. You should Cc: them each
> > time because they know better than me and even if these patches are carried
> > through my tree, I won't do it without an ack from them.
>
> OK, I will add them next time on.
>
> -Pradeep
>
> > Cc'ing Markus for blockdev.c and David for hmp.c.
> >
> >> Signed-off-by: Pradeep Jagadeesh <pradeep.jagade...@huawei.com>
> >> ---
> >> blockdev.c | 53 +++---------------------------------
> >> hmp.c | 21 ++++++++++-----
> >> include/qemu/throttle-options.h | 3 +++
> >> util/throttle.c | 60
> >> +++++++++++++++++++++++++++++++++++++++++
> >> 4 files changed, 81 insertions(+), 56 deletions(-)
> >>
> >> diff --git a/blockdev.c b/blockdev.c
> >> index 5db9e5c..3d06e9e 100644
> >> --- a/blockdev.c
> >> +++ b/blockdev.c
> >> @@ -2593,6 +2593,7 @@ void qmp_block_set_io_throttle(BlockIOThrottle *arg,
> >> Error **errp)
> >> BlockDriverState *bs;
> >> BlockBackend *blk;
> >> AioContext *aio_context;
> >> + IOThrottle *iothrottle;
> >>
> >> blk = qmp_get_blk(arg->has_device ? arg->device : NULL,
> >> arg->has_id ? arg->id : NULL,
> >> @@ -2610,56 +2611,8 @@ void qmp_block_set_io_throttle(BlockIOThrottle
> >> *arg, Error **errp)
> >> goto out;
> >> }
> >>
> >> - throttle_config_init(&cfg);
> >> - cfg.buckets[THROTTLE_BPS_TOTAL].avg = arg->bps;
> >> - cfg.buckets[THROTTLE_BPS_READ].avg = arg->bps_rd;
> >> - cfg.buckets[THROTTLE_BPS_WRITE].avg = arg->bps_wr;
> >> -
> >> - cfg.buckets[THROTTLE_OPS_TOTAL].avg = arg->iops;
> >> - cfg.buckets[THROTTLE_OPS_READ].avg = arg->iops_rd;
> >> - cfg.buckets[THROTTLE_OPS_WRITE].avg = arg->iops_wr;
> >> -
> >> - if (arg->has_bps_max) {
> >> - cfg.buckets[THROTTLE_BPS_TOTAL].max = arg->bps_max;
> >> - }
> >> - if (arg->has_bps_rd_max) {
> >> - cfg.buckets[THROTTLE_BPS_READ].max = arg->bps_rd_max;
> >> - }
> >> - if (arg->has_bps_wr_max) {
> >> - cfg.buckets[THROTTLE_BPS_WRITE].max = arg->bps_wr_max;
> >> - }
> >> - if (arg->has_iops_max) {
> >> - cfg.buckets[THROTTLE_OPS_TOTAL].max = arg->iops_max;
> >> - }
> >> - if (arg->has_iops_rd_max) {
> >> - cfg.buckets[THROTTLE_OPS_READ].max = arg->iops_rd_max;
> >> - }
> >> - if (arg->has_iops_wr_max) {
> >> - cfg.buckets[THROTTLE_OPS_WRITE].max = arg->iops_wr_max;
> >> - }
> >> -
> >> - if (arg->has_bps_max_length) {
> >> - cfg.buckets[THROTTLE_BPS_TOTAL].burst_length =
> >> arg->bps_max_length;
> >> - }
> >> - if (arg->has_bps_rd_max_length) {
> >> - cfg.buckets[THROTTLE_BPS_READ].burst_length =
> >> arg->bps_rd_max_length;
> >> - }
> >> - if (arg->has_bps_wr_max_length) {
> >> - cfg.buckets[THROTTLE_BPS_WRITE].burst_length =
> >> arg->bps_wr_max_length;
> >> - }
> >> - if (arg->has_iops_max_length) {
> >> - cfg.buckets[THROTTLE_OPS_TOTAL].burst_length =
> >> arg->iops_max_length;
> >> - }
> >> - if (arg->has_iops_rd_max_length) {
> >> - cfg.buckets[THROTTLE_OPS_READ].burst_length =
> >> arg->iops_rd_max_length;
> >> - }
> >> - if (arg->has_iops_wr_max_length) {
> >> - cfg.buckets[THROTTLE_OPS_WRITE].burst_length =
> >> arg->iops_wr_max_length;
> >> - }
> >> -
> >> - if (arg->has_iops_size) {
> >> - cfg.op_size = arg->iops_size;
> >> - }
> >> + iothrottle = qapi_BlockIOThrottle_base(arg);
> >> + throttle_set_io_limits(&cfg, iothrottle);
> >>
> >> if (!throttle_is_valid(&cfg, errp)) {
> >> goto out;
> >> diff --git a/hmp.c b/hmp.c
> >> index 8c72c58..220d301 100644
> >> --- a/hmp.c
> >> +++ b/hmp.c
> >> @@ -1749,20 +1749,29 @@ void hmp_change(Monitor *mon, const QDict *qdict)
> >> hmp_handle_error(mon, &err);
> >> }
> >>
> >> +static void hmp_initialize_io_throttle(IOThrottle *iot, const QDict
> >> *qdict)
> >> +{
> >> + iot->has_id = true;
> >> + iot->id = (char *) qdict_get_str(qdict, "id");
> >> + iot->bps = qdict_get_int(qdict, "bps");
> >> + iot->bps_rd = qdict_get_int(qdict, "bps_rd");
> >> + iot->bps_wr = qdict_get_int(qdict, "bps_wr");
> >> + iot->iops = qdict_get_int(qdict, "iops");
> >> + iot->iops_rd = qdict_get_int(qdict, "iops_rd");
> >> + iot->iops_wr = qdict_get_int(qdict, "iops_wr");
> >> +}
> >> +
> >> void hmp_block_set_io_throttle(Monitor *mon, const QDict *qdict)
> >> {
> >> Error *err = NULL;
> >> + IOThrottle *iothrottle;
> >> BlockIOThrottle throttle = {
> >> .has_device = true,
> >> .device = (char *) qdict_get_str(qdict, "device"),
> >> - .bps = qdict_get_int(qdict, "bps"),
> >> - .bps_rd = qdict_get_int(qdict, "bps_rd"),
> >> - .bps_wr = qdict_get_int(qdict, "bps_wr"),
> >> - .iops = qdict_get_int(qdict, "iops"),
> >> - .iops_rd = qdict_get_int(qdict, "iops_rd"),
> >> - .iops_wr = qdict_get_int(qdict, "iops_wr"),
> >> };
> >>
> >> + iothrottle = qapi_BlockIOThrottle_base(&throttle);
> >> + hmp_initialize_io_throttle(iothrottle, qdict);
> >> qmp_block_set_io_throttle(&throttle, &err);
> >> hmp_handle_error(mon, &err);
> >> }
> >> diff --git a/include/qemu/throttle-options.h
> >> b/include/qemu/throttle-options.h
> >> index 565553a..e94ea39 100644
> >> --- a/include/qemu/throttle-options.h
> >> +++ b/include/qemu/throttle-options.h
> >> @@ -11,6 +11,7 @@
> >> #define THROTTLE_OPTIONS_H
> >>
> >> #include "qemu/throttle.h"
> >> +#include "qmp-commands.h"
> >>
> >> #define THROTTLE_OPTS \
> >> { \
> >> @@ -93,4 +94,6 @@
> >>
> >> void throttle_parse_options(ThrottleConfig *, QemuOpts *);
> >>
> >> +void throttle_set_io_limits(ThrottleConfig *, IOThrottle *);
> >> +
> >> #endif
> >> diff --git a/util/throttle.c b/util/throttle.c
> >> index ebe9dd0..2cf9ec5 100644
> >> --- a/util/throttle.c
> >> +++ b/util/throttle.c
> >> @@ -27,6 +27,7 @@
> >> #include "qemu/throttle.h"
> >> #include "qemu/timer.h"
> >> #include "block/aio.h"
> >> +#include "qemu/throttle-options.h"
> >>
> >> /* This function make a bucket leak
> >> *
> >> @@ -564,3 +565,62 @@ void throttle_parse_options(ThrottleConfig
> >> *throttle_cfg, QemuOpts *opts)
> >> throttle_cfg->op_size =
> >> qemu_opt_get_number(opts, "throttling.iops-size", 0);
> >> }
> >> +
> >> +/* set the throttle limits
> >> + *
> >> + * @arg: iothrottle limits
> >> + * @cfg: throttle configuration
> >> + */
> >> +void throttle_set_io_limits(ThrottleConfig *cfg, IOThrottle *arg)
> >> +{
> >> + throttle_config_init(cfg);
> >> + cfg->buckets[THROTTLE_BPS_TOTAL].avg = arg->bps;
> >> + cfg->buckets[THROTTLE_BPS_READ].avg = arg->bps_rd;
> >> + cfg->buckets[THROTTLE_BPS_WRITE].avg = arg->bps_wr;
> >> +
> >> + cfg->buckets[THROTTLE_OPS_TOTAL].avg = arg->iops;
> >> + cfg->buckets[THROTTLE_OPS_READ].avg = arg->iops_rd;
> >> + cfg->buckets[THROTTLE_OPS_WRITE].avg = arg->iops_wr;
> >> +
> >> + if (arg->has_bps_max) {
> >> + cfg->buckets[THROTTLE_BPS_TOTAL].max = arg->bps_max;
> >> + }
> >> + if (arg->has_bps_rd_max) {
> >> + cfg->buckets[THROTTLE_BPS_READ].max = arg->bps_rd_max;
> >> + }
> >> + if (arg->has_bps_wr_max) {
> >> + cfg->buckets[THROTTLE_BPS_WRITE].max = arg->bps_wr_max;
> >> + }
> >> + if (arg->has_iops_max) {
> >> + cfg->buckets[THROTTLE_OPS_TOTAL].max = arg->iops_max;
> >> + }
> >> + if (arg->has_iops_rd_max) {
> >> + cfg->buckets[THROTTLE_OPS_READ].max = arg->iops_rd_max;
> >> + }
> >> + if (arg->has_iops_wr_max) {
> >> + cfg->buckets[THROTTLE_OPS_WRITE].max = arg->iops_wr_max;
> >> + }
> >> +
> >> + if (arg->has_bps_max_length) {
> >> + cfg->buckets[THROTTLE_BPS_TOTAL].burst_length =
> >> arg->bps_max_length;
> >> + }
> >> + if (arg->has_bps_rd_max_length) {
> >> + cfg->buckets[THROTTLE_BPS_READ].burst_length =
> >> arg->bps_rd_max_length;
> >> + }
> >> + if (arg->has_bps_wr_max_length) {
> >> + cfg->buckets[THROTTLE_BPS_WRITE].burst_length =
> >> arg->bps_wr_max_length;
> >> + }
> >> + if (arg->has_iops_max_length) {
> >> + cfg->buckets[THROTTLE_OPS_TOTAL].burst_length =
> >> arg->iops_max_length;
> >> + }
> >> + if (arg->has_iops_rd_max_length) {
> >> + cfg->buckets[THROTTLE_OPS_READ].burst_length =
> >> arg->iops_rd_max_length;
> >> + }
> >> + if (arg->has_iops_wr_max_length) {
> >> + cfg->buckets[THROTTLE_OPS_WRITE].burst_length =
> >> arg->iops_wr_max_length;
> >> + }
> >> +
> >> + if (arg->has_iops_size) {
> >> + cfg->op_size = arg->iops_size;
> >> + }
> >> +}
> >
>
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