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authorRajithaY <rajithax.yerrumsetty@intel.com>2017-04-25 03:31:15 -0700
committerRajitha Yerrumchetty <rajithax.yerrumsetty@intel.com>2017-05-22 06:48:08 +0000
commitbb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch)
treeca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/blockjob.c
parenta14b48d18a9ed03ec191cf16b162206998a895ce (diff)
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to kvmfornfv repo and make use of the updated latest qemu for the execution of all testcase Change-Id: I1280af507a857675c7f81d30c95255635667bdd7 Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/blockjob.c')
-rw-r--r--qemu/blockjob.c531
1 files changed, 0 insertions, 531 deletions
diff --git a/qemu/blockjob.c b/qemu/blockjob.c
deleted file mode 100644
index 9fc37ca96..000000000
--- a/qemu/blockjob.c
+++ /dev/null
@@ -1,531 +0,0 @@
-/*
- * QEMU System Emulator block driver
- *
- * Copyright (c) 2011 IBM Corp.
- * Copyright (c) 2012 Red Hat, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#include "qemu/osdep.h"
-#include "qemu-common.h"
-#include "trace.h"
-#include "block/block.h"
-#include "block/blockjob.h"
-#include "block/block_int.h"
-#include "sysemu/block-backend.h"
-#include "qapi/qmp/qerror.h"
-#include "qapi/qmp/qjson.h"
-#include "qemu/coroutine.h"
-#include "qmp-commands.h"
-#include "qemu/timer.h"
-#include "qapi-event.h"
-
-/* Transactional group of block jobs */
-struct BlockJobTxn {
-
- /* Is this txn being cancelled? */
- bool aborting;
-
- /* List of jobs */
- QLIST_HEAD(, BlockJob) jobs;
-
- /* Reference count */
- int refcnt;
-};
-
-void *block_job_create(const BlockJobDriver *driver, BlockDriverState *bs,
- int64_t speed, BlockCompletionFunc *cb,
- void *opaque, Error **errp)
-{
- BlockJob *job;
-
- if (bs->job) {
- error_setg(errp, QERR_DEVICE_IN_USE, bdrv_get_device_name(bs));
- return NULL;
- }
- bdrv_ref(bs);
- job = g_malloc0(driver->instance_size);
- error_setg(&job->blocker, "block device is in use by block job: %s",
- BlockJobType_lookup[driver->job_type]);
- bdrv_op_block_all(bs, job->blocker);
- bdrv_op_unblock(bs, BLOCK_OP_TYPE_DATAPLANE, job->blocker);
-
- job->driver = driver;
- job->id = g_strdup(bdrv_get_device_name(bs));
- job->bs = bs;
- job->cb = cb;
- job->opaque = opaque;
- job->busy = true;
- job->refcnt = 1;
- bs->job = job;
-
- /* Only set speed when necessary to avoid NotSupported error */
- if (speed != 0) {
- Error *local_err = NULL;
-
- block_job_set_speed(job, speed, &local_err);
- if (local_err) {
- block_job_unref(job);
- error_propagate(errp, local_err);
- return NULL;
- }
- }
- return job;
-}
-
-void block_job_ref(BlockJob *job)
-{
- ++job->refcnt;
-}
-
-void block_job_unref(BlockJob *job)
-{
- if (--job->refcnt == 0) {
- job->bs->job = NULL;
- bdrv_op_unblock_all(job->bs, job->blocker);
- bdrv_unref(job->bs);
- error_free(job->blocker);
- g_free(job->id);
- g_free(job);
- }
-}
-
-static void block_job_completed_single(BlockJob *job)
-{
- if (!job->ret) {
- if (job->driver->commit) {
- job->driver->commit(job);
- }
- } else {
- if (job->driver->abort) {
- job->driver->abort(job);
- }
- }
- job->cb(job->opaque, job->ret);
- if (job->txn) {
- block_job_txn_unref(job->txn);
- }
- block_job_unref(job);
-}
-
-static void block_job_completed_txn_abort(BlockJob *job)
-{
- AioContext *ctx;
- BlockJobTxn *txn = job->txn;
- BlockJob *other_job, *next;
-
- if (txn->aborting) {
- /*
- * We are cancelled by another job, which will handle everything.
- */
- return;
- }
- txn->aborting = true;
- /* We are the first failed job. Cancel other jobs. */
- QLIST_FOREACH(other_job, &txn->jobs, txn_list) {
- ctx = bdrv_get_aio_context(other_job->bs);
- aio_context_acquire(ctx);
- }
- QLIST_FOREACH(other_job, &txn->jobs, txn_list) {
- if (other_job == job || other_job->completed) {
- /* Other jobs are "effectively" cancelled by us, set the status for
- * them; this job, however, may or may not be cancelled, depending
- * on the caller, so leave it. */
- if (other_job != job) {
- other_job->cancelled = true;
- }
- continue;
- }
- block_job_cancel_sync(other_job);
- assert(other_job->completed);
- }
- QLIST_FOREACH_SAFE(other_job, &txn->jobs, txn_list, next) {
- ctx = bdrv_get_aio_context(other_job->bs);
- block_job_completed_single(other_job);
- aio_context_release(ctx);
- }
-}
-
-static void block_job_completed_txn_success(BlockJob *job)
-{
- AioContext *ctx;
- BlockJobTxn *txn = job->txn;
- BlockJob *other_job, *next;
- /*
- * Successful completion, see if there are other running jobs in this
- * txn.
- */
- QLIST_FOREACH(other_job, &txn->jobs, txn_list) {
- if (!other_job->completed) {
- return;
- }
- }
- /* We are the last completed job, commit the transaction. */
- QLIST_FOREACH_SAFE(other_job, &txn->jobs, txn_list, next) {
- ctx = bdrv_get_aio_context(other_job->bs);
- aio_context_acquire(ctx);
- assert(other_job->ret == 0);
- block_job_completed_single(other_job);
- aio_context_release(ctx);
- }
-}
-
-void block_job_completed(BlockJob *job, int ret)
-{
- BlockDriverState *bs = job->bs;
-
- assert(bs->job == job);
- assert(!job->completed);
- job->completed = true;
- job->ret = ret;
- if (!job->txn) {
- block_job_completed_single(job);
- } else if (ret < 0 || block_job_is_cancelled(job)) {
- block_job_completed_txn_abort(job);
- } else {
- block_job_completed_txn_success(job);
- }
-}
-
-void block_job_set_speed(BlockJob *job, int64_t speed, Error **errp)
-{
- Error *local_err = NULL;
-
- if (!job->driver->set_speed) {
- error_setg(errp, QERR_UNSUPPORTED);
- return;
- }
- job->driver->set_speed(job, speed, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
- return;
- }
-
- job->speed = speed;
-}
-
-void block_job_complete(BlockJob *job, Error **errp)
-{
- if (job->pause_count || job->cancelled || !job->driver->complete) {
- error_setg(errp, QERR_BLOCK_JOB_NOT_READY, job->id);
- return;
- }
-
- job->driver->complete(job, errp);
-}
-
-void block_job_pause(BlockJob *job)
-{
- job->pause_count++;
-}
-
-bool block_job_is_paused(BlockJob *job)
-{
- return job->pause_count > 0;
-}
-
-void block_job_resume(BlockJob *job)
-{
- assert(job->pause_count > 0);
- job->pause_count--;
- if (job->pause_count) {
- return;
- }
- block_job_enter(job);
-}
-
-void block_job_enter(BlockJob *job)
-{
- block_job_iostatus_reset(job);
- if (job->co && !job->busy) {
- qemu_coroutine_enter(job->co, NULL);
- }
-}
-
-void block_job_cancel(BlockJob *job)
-{
- job->cancelled = true;
- block_job_enter(job);
-}
-
-bool block_job_is_cancelled(BlockJob *job)
-{
- return job->cancelled;
-}
-
-void block_job_iostatus_reset(BlockJob *job)
-{
- job->iostatus = BLOCK_DEVICE_IO_STATUS_OK;
- if (job->driver->iostatus_reset) {
- job->driver->iostatus_reset(job);
- }
-}
-
-static int block_job_finish_sync(BlockJob *job,
- void (*finish)(BlockJob *, Error **errp),
- Error **errp)
-{
- BlockDriverState *bs = job->bs;
- Error *local_err = NULL;
- int ret;
-
- assert(bs->job == job);
-
- block_job_ref(job);
- finish(job, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
- block_job_unref(job);
- return -EBUSY;
- }
- while (!job->completed) {
- aio_poll(job->deferred_to_main_loop ? qemu_get_aio_context() :
- bdrv_get_aio_context(bs),
- true);
- }
- ret = (job->cancelled && job->ret == 0) ? -ECANCELED : job->ret;
- block_job_unref(job);
- return ret;
-}
-
-/* A wrapper around block_job_cancel() taking an Error ** parameter so it may be
- * used with block_job_finish_sync() without the need for (rather nasty)
- * function pointer casts there. */
-static void block_job_cancel_err(BlockJob *job, Error **errp)
-{
- block_job_cancel(job);
-}
-
-int block_job_cancel_sync(BlockJob *job)
-{
- return block_job_finish_sync(job, &block_job_cancel_err, NULL);
-}
-
-int block_job_complete_sync(BlockJob *job, Error **errp)
-{
- return block_job_finish_sync(job, &block_job_complete, errp);
-}
-
-void block_job_sleep_ns(BlockJob *job, QEMUClockType type, int64_t ns)
-{
- assert(job->busy);
-
- /* Check cancellation *before* setting busy = false, too! */
- if (block_job_is_cancelled(job)) {
- return;
- }
-
- job->busy = false;
- if (block_job_is_paused(job)) {
- qemu_coroutine_yield();
- } else {
- co_aio_sleep_ns(bdrv_get_aio_context(job->bs), type, ns);
- }
- job->busy = true;
-}
-
-void block_job_yield(BlockJob *job)
-{
- assert(job->busy);
-
- /* Check cancellation *before* setting busy = false, too! */
- if (block_job_is_cancelled(job)) {
- return;
- }
-
- job->busy = false;
- qemu_coroutine_yield();
- job->busy = true;
-}
-
-BlockJobInfo *block_job_query(BlockJob *job)
-{
- BlockJobInfo *info = g_new0(BlockJobInfo, 1);
- info->type = g_strdup(BlockJobType_lookup[job->driver->job_type]);
- info->device = g_strdup(job->id);
- info->len = job->len;
- info->busy = job->busy;
- info->paused = job->pause_count > 0;
- info->offset = job->offset;
- info->speed = job->speed;
- info->io_status = job->iostatus;
- info->ready = job->ready;
- return info;
-}
-
-static void block_job_iostatus_set_err(BlockJob *job, int error)
-{
- if (job->iostatus == BLOCK_DEVICE_IO_STATUS_OK) {
- job->iostatus = error == ENOSPC ? BLOCK_DEVICE_IO_STATUS_NOSPACE :
- BLOCK_DEVICE_IO_STATUS_FAILED;
- }
-}
-
-void block_job_event_cancelled(BlockJob *job)
-{
- qapi_event_send_block_job_cancelled(job->driver->job_type,
- job->id,
- job->len,
- job->offset,
- job->speed,
- &error_abort);
-}
-
-void block_job_event_completed(BlockJob *job, const char *msg)
-{
- qapi_event_send_block_job_completed(job->driver->job_type,
- job->id,
- job->len,
- job->offset,
- job->speed,
- !!msg,
- msg,
- &error_abort);
-}
-
-void block_job_event_ready(BlockJob *job)
-{
- job->ready = true;
-
- qapi_event_send_block_job_ready(job->driver->job_type,
- job->id,
- job->len,
- job->offset,
- job->speed, &error_abort);
-}
-
-BlockErrorAction block_job_error_action(BlockJob *job, BlockDriverState *bs,
- BlockdevOnError on_err,
- int is_read, int error)
-{
- BlockErrorAction action;
-
- switch (on_err) {
- case BLOCKDEV_ON_ERROR_ENOSPC:
- action = (error == ENOSPC) ?
- BLOCK_ERROR_ACTION_STOP : BLOCK_ERROR_ACTION_REPORT;
- break;
- case BLOCKDEV_ON_ERROR_STOP:
- action = BLOCK_ERROR_ACTION_STOP;
- break;
- case BLOCKDEV_ON_ERROR_REPORT:
- action = BLOCK_ERROR_ACTION_REPORT;
- break;
- case BLOCKDEV_ON_ERROR_IGNORE:
- action = BLOCK_ERROR_ACTION_IGNORE;
- break;
- default:
- abort();
- }
- qapi_event_send_block_job_error(job->id,
- is_read ? IO_OPERATION_TYPE_READ :
- IO_OPERATION_TYPE_WRITE,
- action, &error_abort);
- if (action == BLOCK_ERROR_ACTION_STOP) {
- /* make the pause user visible, which will be resumed from QMP. */
- job->user_paused = true;
- block_job_pause(job);
- block_job_iostatus_set_err(job, error);
- if (bs->blk && bs != job->bs) {
- blk_iostatus_set_err(bs->blk, error);
- }
- }
- return action;
-}
-
-typedef struct {
- BlockJob *job;
- QEMUBH *bh;
- AioContext *aio_context;
- BlockJobDeferToMainLoopFn *fn;
- void *opaque;
-} BlockJobDeferToMainLoopData;
-
-static void block_job_defer_to_main_loop_bh(void *opaque)
-{
- BlockJobDeferToMainLoopData *data = opaque;
- AioContext *aio_context;
-
- qemu_bh_delete(data->bh);
-
- /* Prevent race with block_job_defer_to_main_loop() */
- aio_context_acquire(data->aio_context);
-
- /* Fetch BDS AioContext again, in case it has changed */
- aio_context = bdrv_get_aio_context(data->job->bs);
- aio_context_acquire(aio_context);
-
- data->job->deferred_to_main_loop = false;
- data->fn(data->job, data->opaque);
-
- aio_context_release(aio_context);
-
- aio_context_release(data->aio_context);
-
- g_free(data);
-}
-
-void block_job_defer_to_main_loop(BlockJob *job,
- BlockJobDeferToMainLoopFn *fn,
- void *opaque)
-{
- BlockJobDeferToMainLoopData *data = g_malloc(sizeof(*data));
- data->job = job;
- data->bh = qemu_bh_new(block_job_defer_to_main_loop_bh, data);
- data->aio_context = bdrv_get_aio_context(job->bs);
- data->fn = fn;
- data->opaque = opaque;
- job->deferred_to_main_loop = true;
-
- qemu_bh_schedule(data->bh);
-}
-
-BlockJobTxn *block_job_txn_new(void)
-{
- BlockJobTxn *txn = g_new0(BlockJobTxn, 1);
- QLIST_INIT(&txn->jobs);
- txn->refcnt = 1;
- return txn;
-}
-
-static void block_job_txn_ref(BlockJobTxn *txn)
-{
- txn->refcnt++;
-}
-
-void block_job_txn_unref(BlockJobTxn *txn)
-{
- if (txn && --txn->refcnt == 0) {
- g_free(txn);
- }
-}
-
-void block_job_txn_add_job(BlockJobTxn *txn, BlockJob *job)
-{
- if (!txn) {
- return;
- }
-
- assert(!job->txn);
- job->txn = txn;
-
- QLIST_INSERT_HEAD(&txn->jobs, job, txn_list);
- block_job_txn_ref(txn);
-}