* Stefan Hajnoczi [2011-01-05 19:53:44]:
> On Tue, Jan 04, 2011 at 10:57:08AM +0530, Arun R Bharadwaj wrote:
> > @@ -545,13 +555,19 @@ static void paio_cancel(BlockDriverAIOCB *blockacb)
> > }
> > mutex_unlock(&lock);
> >
> > -if (active) {
* Stefan Hajnoczi [2011-01-05 19:54:17]:
> On Tue, Jan 04, 2011 at 10:57:20AM +0530, Arun R Bharadwaj wrote:
> > +static void aio_thread(ThreadletWork *work)
> > +{
>
> aio_thread() is not a descriptive name here. This isn't the top-level
> thread function, just t
* Venkateswararao Jujjuri (JV) [2011-01-04 15:13:45]:
> On 1/3/2011 9:27 PM, Arun R Bharadwaj wrote:
> > Hi,
> >
> > This patch series implements threadlets infrastructure in qemu.
> >
> > This is a complete rework of the earlier patch series so that
> &
This patch moves the threadlet queue API code to
qemu-threadlets.c where these APIs can be used by
other subsystems.
Signed-off-by: Arun R Bharadwaj
---
Makefile.objs |1
posix-aio-compat.c | 151
qemu-thread.h |1
qemu
Remove all instances of CONFIG_THREAD, which is not used
anymore.
Signed-off-by: Arun R Bharadwaj
---
configure |2 --
1 files changed, 0 insertions(+), 2 deletions(-)
diff --git a/configure b/configure
index a079a49..addf733 100755
--- a/configure
+++ b/configure
@@ -2456,7 +2456,6 @@ if
Remove thread_create and use qemu_thread_create instead.
Signed-off-by: Arun R Bharadwaj
---
posix-aio-compat.c | 19 ++-
1 files changed, 2 insertions(+), 17 deletions(-)
diff --git a/posix-aio-compat.c b/posix-aio-compat.c
index fd9fcfd..3b01c9b 100644
--- a/posix-aio
This patch allows subsystems to create their own private
queues with associated pools of threads.
Signed-off-by: Arun R Bharadwaj
---
qemu-threadlets.c | 80 ++---
qemu-threadlets.h |4 +++
2 files changed, 62 insertions(+), 22 deletions
The active field in the qemu_aiocb structure is now useless.
Remove it.
Signed-off-by: Arun R Bharadwaj
---
posix-aio-compat.c | 17 ++---
1 files changed, 6 insertions(+), 11 deletions(-)
diff --git a/posix-aio-compat.c b/posix-aio-compat.c
index 8f1a9b6..fd9fcfd 100644
--- a
This patch adds aio_signal_handler threadlet API. Earler
posix-aio-compat.c had its own signal handler code. Now
abstract this, in the later patch it is moved to a generic
code so that it can be used by other subsystems.
Signed-off-by: Arun R Bharadwaj
---
posix-aio-compat.c | 49
Signed-off-by: Arun R Bharadwaj
Signed-off-by: Gautham R Shenoy
---
docs/async-support.txt | 141
1 files changed, 141 insertions(+), 0 deletions(-)
create mode 100644 docs/async-support.txt
diff --git a/docs/async-support.txt b/docs/async
This patch adds dequeue_work threadlet API and shows how
the paio_cancel changes to dequeue_work.
Signed-off-by: Arun R Bharadwaj
---
posix-aio-compat.c | 46 ++
1 files changed, 26 insertions(+), 20 deletions(-)
diff --git a/posix-aio-compat.c b
This patch adds submit work threadlet API and shows how
the qemu_paio_submit changes to submit_work.
Signed-off-by: Arun R Bharadwaj
---
posix-aio-compat.c | 33 ++---
1 files changed, 22 insertions(+), 11 deletions(-)
diff --git a/posix-aio-compat.c b/posix-aio
This patch adds a global queue of type ThreadletQueue and
removes the earlier usage of request_list queue.
We want to create the thread on the first submit. Hence we
need to track whether the globalqueue is initialized or not.
Signed-off-by: Arun R Bharadwaj
---
posix-aio-compat.c | 161
This patch adds the callback function to the ThreadletWork
structure and moves aio handler as a callback function.
Signed-off-by: Arun R Bharadwaj
---
posix-aio-compat.c | 88 +---
1 files changed, 49 insertions(+), 39 deletions(-)
diff --git a
This patch introduces work concept by introducing the
ThreadletWork structure.
Signed-off-by: Arun R Bharadwaj
---
posix-aio-compat.c | 20 ++--
1 files changed, 14 insertions(+), 6 deletions(-)
diff --git a/posix-aio-compat.c b/posix-aio-compat.c
index ae5e20e..de52eb5
the Makefile entry to compile qemu-thread.c
when CONFIG_POSIX is set, instead of the unused CONFIG_THREAD.
Signed-off-by: Arun R Bharadwaj
---
Makefile.objs |2 +-
posix-aio-compat.c | 37 -
2 files changed, 29 insertions(+), 10 deletions(-)
diff
Hi,
This patch series implements threadlets infrastructure in qemu.
This is a complete rework of the earlier patch series so that
it becomes easier to review. I have broken down the earlier
patch series as asked by Anthony
The following series implements...
---
Arun R Bharadwaj (13
The reason for creating this generic infrastructure is so that other subsystems,
such as virtio-9p could make use of it for offloading tasks that could block.
Signed-off-by: Arun R Bharadwaj
Signed-off-by: Aneesh Kumar K.V
Signed-off-by: Gautham R Shenoy
Signed-off-by: Sripathi Kodi
Acked-by
Cleanup posix-aio.compat.c off all the old code which
is now useless after introducing the generic threadlet
infrasturcture.
Signed-off-by: Arun R Bharadwaj
---
posix-aio-compat.c | 57 +---
1 files changed, 1 insertions(+), 56 deletions
Move paio_cancel() to new infrastructure and introduce
the necessary APIs for this.
Signed-off-by: Arun R Bharadwaj
---
posix-aio-compat.c | 92 ++--
1 files changed, 74 insertions(+), 18 deletions(-)
diff --git a/posix-aio-compat.c b/posix-aio
Move qemu_paio_submit() to the new infrastructure and
introduce the necessary APIs.
Signed-off-by: Arun R Bharadwaj
---
posix-aio-compat.c | 224 ++--
1 files changed, 147 insertions(+), 77 deletions(-)
diff --git a/posix-aio-compat.c b/posix
Signed-off-by: Arun R Bharadwaj
---
Makefile.objs |2 +-
configure |2 --
2 files changed, 1 insertions(+), 3 deletions(-)
diff --git a/Makefile.objs b/Makefile.objs
index cd5a24b..3b7ec27 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -9,6 +9,7 @@ qobject-obj-y += qerror.o
From: Gautham R Shenoy
infrastructure for offloading blocking tasks such as making posix calls on
to the helper threads and handle the post_posix_operations() from the
context of the iothread. This frees the vcpu thread to process any other guest
operations while the processing of v9fs_io is in
implements...
---
Arun R Bharadwaj (5):
Make the necessary changes in Makefile and configure file.
Move paio_cancel() to new infrastructure.
Move qemu_paio_submit() to the new infrastructure.
Cleanup posix-aio.compat.c off all the old code.
Move threadlets infrastructure
* Anthony Liguori [2010-11-15 15:13:24]:
> On 11/15/2010 11:53 AM, Arun R Bharadwaj wrote:
> >From: Gautham R Shenoy
> >
> >This patch creates a generic asynchronous-task-offloading infrastructure
> >named
> >threadlets.
> >
> >The patch creates a
From: Gautham R Shenoy
infrastructure for offloading blocking tasks such as making posix calls on
to the helper threads and handle the post_posix_operations() from the
context of the iothread. This frees the vcpu thread to process any other guest
operations while the processing of v9fs_io is in
The reason for creating this generic infrastructure is so that other subsystems,
such as virtio-9p could make use of it for offloading tasks that could block.
Signed-off-by: Arun R Bharadwaj
Signed-off-by: Aneesh Kumar K.V
Signed-off-by: Gautham R Shenoy
Signed-off-by: Sripathi Kodi
Acked-by
From: Gautham R Shenoy
This patch creates a generic asynchronous-task-offloading infrastructure named
threadlets.
The patch creates a global queue on-to which subsystems can queue their tasks to
be executed asynchronously.
The patch also provides API's that allow a subsystem to cre
-dbench
-fsstress
-disktest
-cpu_hotplug
-hackbench
-sleeptest
Changelog:
* Moved the qemu_cond_broadcast to the right place.
* Removed unnecessary extern qualifiers.
The following series implements...
---
Arun R Bharadwaj (1):
Move threadlets
* Stefan Hajnoczi [2010-11-10 13:47:22]:
> On Wed, Nov 10, 2010 at 1:19 PM, Arun R Bharadwaj
> wrote:
> > The reason for creating this generic infrastructure is so that other
> > subsystems,
> > such as virtio-9p could make use of it for offloading tasks that could
&
* Blue Swirl [2010-11-10 17:29:30]:
> On Wed, Nov 10, 2010 at 1:19 PM, Arun R Bharadwaj
> wrote:
> > The reason for creating this generic infrastructure is so that other
> > subsystems,
> > such as virtio-9p could make use of it for offloading tasks that could
> >
* Stefan Hajnoczi [2010-11-10 13:45:29]:
> On Wed, Nov 10, 2010 at 1:19 PM, Arun R Bharadwaj
> wrote:
> > @@ -301,106 +431,58 @@ static ssize_t handle_aiocb_rw(struct qemu_paiocb
> > *aiocb)
> > return nbytes;
> > }
> >
> > -static void
From: Gautham R Shenoy
infrastructure for offloading blocking tasks such as making posix calls on
to the helper threads and handle the post_posix_operations() from the
context of the iothread. This frees the vcpu thread to process any other guest
operations while the processing of v9fs_io is in
The reason for creating this generic infrastructure is so that other subsystems,
such as virtio-9p could make use of it for offloading tasks that could block.
Signed-off-by: Arun R Bharadwaj
Signed-off-by: Aneesh Kumar K.V
Signed-off-by: Gautham R Shenoy
Signed-off-by: Sripathi Kodi
ate a private queue
with an associated pool of threads.
The patch has been tested with fstress.
Signed-off-by: Aneesh Kumar K.V
Signed-off-by: Arun R Bharadwaj
Signed-off-by: Gautham R Shenoy
Signed-off-by: Sripathi Kodi
---
Makefile.objs |2
configure |2
posix-aio-com
=y from the
configure code.
The following series implements...
---
Aneesh Kumar K.V (1):
Make paio subsystem use threadlets infrastructure
Arun R Bharadwaj (1):
Move threadlets infrastructure to qemu-threadlets.c
Gautham R Shenoy (1):
Add helper functions to enable virtio
* Stefan Hajnoczi [2010-11-08 21:29:12]:
> On Mon, Nov 8, 2010 at 2:33 PM, Arun R Bharadwaj
> wrote:
> > diff --git a/Makefile.objs b/Makefile.objs
> > index cd5a24b..3b7ec27 100644
> > --- a/Makefile.objs
> > +++ b/Makefile.objs
> > @@ -9,6 +9,7 @@ qobject-
ate a private queue
with an associated pool of threads.
The patch has been tested with fstress.
Signed-off-by: Aneesh Kumar K.V
Signed-off-by: Arun R Bharadwaj
Signed-off-by: Gautham R Shenoy
Signed-off-by: Sripathi Kodi
---
Makefile.objs |2
posix-aio-compat.c |
* Arun R Bharadwaj [2010-11-08 16:16:50]:
Make paio subsystem use threadlets infrastructure
From: Aneesh Kumar K.V
This patch creates a generic asynchronous-task-offloading infrastructure named
threadlets.
The patch creates a global queue on-to which subsystems can queue their tasks to
be
* Arun R Bharadwaj [2010-11-08 16:16:50]:
> Hi,
>
> This is the v9 of the refactored patch-series to have a generic
> asynchronous task offloading framework (called threadlets)
> within qemu.
>
>
Testing carried out:
I have run KVM autotest suite with this patch
paio_cancel and use mutex
to wait for request to complete.
* Address the issue of dead code due to
MAX_GLOBAL_THREADS = MIN_GLOBAL_THREADS
The following series implements...
---
Aneesh Kumar K.V (1):
Make paio subsystem use threadlets infrastructure
Arun R Bharadwaj (1):
Move threadlets
The reason for creating this generic infrastructure is so that other subsystems,
such as virtio-9p could make use of it for offloading tasks that could block.
Signed-off-by: Arun R Bharadwaj
Signed-off-by: Aneesh Kumar K.V
Signed-off-by: Gautham R Shenoy
Signed-off-by: Sripathi Kodi
From: Gautham R Shenoy
infrastructure for offloading blocking tasks such as making posix calls on
to the helper threads and handle the post_posix_operations() from the
context of the iothread. This frees the vcpu thread to process any other guest
operations while the processing of v9fs_io is in
* Anthony Liguori [2010-11-01 08:40:36]:
> On 10/26/2010 09:14 AM, Arun R Bharadwaj wrote:
> >+Q.7: Apart from the global pool of threads, can I have my own private Queue
> >?
> >+A.7: Yes, the threadlets framework allows subsystems to create their own
> >p
From: Gautham R Shenoy
infrastructure for offloading blocking tasks such as making posix calls on
to the helper threads and handle the post_posix_operations() from the
context of the iothread. This frees the vcpu thread to process any other guest
operations while the processing of v9fs_io is in
modifications is patch 3/3 which I had earlier overlooked.
- Remove a couple of debug print statements.
- Remove the unnecessary posix_aio_state check.
The following series implements...
---
Aneesh Kumar K.V (1):
Introduce threadlets
Gautham R Shenoy (2):
Make paio subsystem use
From: Gautham R Shenoy
This patch makes the paio subsystem use the threadlet framework thereby
decoupling asynchronous threading framework portion out of
posix-aio-compat.c
The patch has been tested with fstress.
Signed-off-by: Gautham R Shenoy
Signed-off-by: Sripathi Kodi
Signed-off-by
reads.
[...@in.ibm.com: Facelift of the code, Documentation, cancel_threadlet
and other helpers]
Signed-off-by: Aneesh Kumar K.V
Signed-off-by: Gautham R Shenoy
Signed-off-by: Sripathi Kodi
Signed-off-by: Arun R Bharadwaj
---
Makefile.objs |3 +
docs/async-support.txt |
* Arun R Bharadwaj [2010-10-21 17:40:55]:
> From: Gautham R Shenoy
>
> infrastructure for offloading blocking tasks such as making posix calls on
> to the helper threads and handle the post_posix_operations() from the
> context of the iothread. This frees the vcpu thread to pr
From: Gautham R Shenoy
infrastructure for offloading blocking tasks such as making posix calls on
to the helper threads and handle the post_posix_operations() from the
context of the iothread. This frees the vcpu thread to process any other guest
operations while the processing of v9fs_io is in
reads.
[...@in.ibm.com: Facelift of the code, Documentation, cancel_threadlet
and other helpers]
Signed-off-by: Aneesh Kumar K.V
Signed-off-by: Gautham R Shenoy
Signed-off-by: Sripathi Kodi
Signed-off-by: Arun R Bharadwaj
---
Makefile.objs |3 +
docs/async-support.txt |
From: Gautham R Shenoy
This patch makes the paio subsystem use the threadlet framework thereby
decoupling asynchronous threading framework portion out of
posix-aio-compat.c
The patch has been tested with fstress.
Signed-off-by: Gautham R Shenoy
Signed-off-by: Sripathi Kodi
Signed-off-by
->active in paio_cancel()
---
Aneesh Kumar K.V (1):
Introduce threadlets
Gautham R Shenoy (2):
Make paio subsystem use threadlets
Add helper functions to enable virtio-9p make use of the threadlets
Makefile.objs |3 -
docs/async-support.txt |
* Stefan Hajnoczi [2010-10-20 10:30:38]:
> On Tue, Oct 19, 2010 at 6:43 PM, Arun R Bharadwaj
> wrote:
> > From: Gautham R Shenoy
> >
> > This patch makes the paio subsystem use the threadlet framework thereby
> > decoupling asynchronous threading framework portion
reads.
[...@in.ibm.com: Facelift of the code, Documentation, cancel_threadlet
and other helpers]
Signed-off-by: Aneesh Kumar K.V
Signed-off-by: Gautham R Shenoy
Signed-off-by: Sripathi Kodi
Signed-off-by: Arun R Bharadwaj
---
Makefile.objs |3 +
docs/async-support.txt |
From: Gautham R Shenoy
This patch makes the paio subsystem use the threadlet framework thereby
decoupling asynchronous threading framework portion out of
posix-aio-compat.c
The patch has been tested with fstress.
Signed-off-by: Gautham R Shenoy
Signed-off-by: Sripathi Kodi
---
posix-aio
From: Gautham R Shenoy
Add helper functions to enable virtio-9p make use of the threadlets
infrastructure for offloading blocking tasks such as making posix calls on
to the helper threads and handle the post_posix_operations() from the
context of the iothread. This frees the vcpu thread to
Change from v5:
* Cleaned up a few minor typos pointed out by Stefan
The following series implements...
---
Aneesh Kumar K.V (1):
Introduce threadlets
Gautham R Shenoy (2):
Make paio subsystem use threadlets
Add helper functions for virtio-9p to use threadlets
* Avi Kivity [2010-10-17 10:57:23]:
> On 10/14/2010 11:32 PM, Venkateswararao Jujjuri (JV) wrote:
> >>
> >> Blocking is somewhat against the spirit of the thing, no? While I agree
> >> that
> >> the current cancel API is hard to use correctly, blocking defeats the
> >> purpose of
> >> the
From: Sripathi Kodi
Signed-off-by: Sripathi Kodi
---
hw/virtio-9p.c | 92 +---
hw/virtio-9p.h |4 ++
2 files changed, 39 insertions(+), 57 deletions(-)
diff --git a/hw/virtio-9p.c b/hw/virtio-9p.c
index 82f0ed2..47bcbd1 100644
--- a/hw/
From: Sripathi Kodi
Signed-off-by: Sripathi Kodi
---
hw/virtio-9p.c | 161 ++--
hw/virtio-9p.h |5 ++
2 files changed, 68 insertions(+), 98 deletions(-)
diff --git a/hw/virtio-9p.c b/hw/virtio-9p.c
index cad21fd..e08f284 100644
--- a/hw/
From: Sripathi Kodi
In this model we hand over the vcpu thread only executes till
the first blocking operation. It then hands over the call to
the worker thread, which does everything needed to complete
the call. It can make multiple blocking calls. It finally
signals the IO threa
From: Sripathi Kodi
Signed-off-by: Sripathi Kodi
---
hw/virtio-9p.c | 115 +++-
hw/virtio-9p.h |4 ++
2 files changed, 51 insertions(+), 68 deletions(-)
diff --git a/hw/virtio-9p.c b/hw/virtio-9p.c
index 1f2fd9f..cad21fd 100644
--- a/hw/
From: Sripathi Kodi
Signed-off-by: Sripathi Kodi
---
hw/virtio-9p.c | 253 +++-
hw/virtio-9p.h |4 +
2 files changed, 91 insertions(+), 166 deletions(-)
diff --git a/hw/virtio-9p.c b/hw/virtio-9p.c
index e08f284..82f0ed2 100644
--- a/hw/
From: Sripathi Kodi
Signed-off-by: Sripathi Kodi
---
qemu-thread.c | 40
qemu-thread.h | 10 ++
2 files changed, 50 insertions(+), 0 deletions(-)
diff --git a/qemu-thread.c b/qemu-thread.c
index fbc78fe..42774ff 100644
--- a/qemu-thread.c
++
From: Sripathi Kodi
In this model we hand over the vcpu thread only executes till
the first blocking operation. It then hands over the call to
the worker thread, which does everything needed to complete
the call. It can make multiple blocking calls. It finally
signals the IO thread to do complete
From: Sripathi Kodi
---
hw/virtio-9p.c |3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/hw/virtio-9p.c b/hw/virtio-9p.c
index 02a4ec4..ef6175a 100644
--- a/hw/virtio-9p.c
+++ b/hw/virtio-9p.c
@@ -21,6 +21,8 @@
int debug_9p_pdu;
+QemuRWMutex global_rename_lock;
+
From: Sripathi Kodi
Currently it is a normal mutex, but I will change it into a rw mutex.
This should be held in read mode while looking up and in write mode
while updating the list.
Signed-off-by: Sripathi Kodi
---
hw/virtio-9p.c | 32 +---
hw/virtio-9p.h |2
Hi,
This patch implements the second threading model.
The first model can be referred here:
http://www.mail-archive.com/qemu-devel@nongnu.org/msg43846.html
The features of the second threading model:
* The VCPU thread runs the Qemu code until the first blocking
call is encountered.
* The work
From: Gautham R Shenoy
This patch offloads all the blocking calls invoked for v9fs_walk onto the
helper threads belonging to the threadlets infrastructure. The handling of
the v9fs_post_*walk* calls is done from the io-thread context.
Signed-off-by: Gautham R Shenoy
---
hw/virtio-9p.c | 78
From: Gautham R Shenoy
This patch offloads all the blocking calls invoked for v9fs_open onto the
helper threads belonging to the threadlets infrastructure. The handling of
the v9fs_post_*open* calls is done from the io-thread context.
Signed-off-by: Gautham R Shenoy
---
hw/virtio-9p.c | 86
From: Gautham R Shenoy
This patch offloads all the blocking calls invoked for v9fs_read onto the
helper threads belonging to the threadlets infrastructure. The handling of
the v9fs_post_*read* calls is done from the io-thread context.
Signed-off-by: Gautham R Shenoy
Signed-off-by: Arun R
From: Gautham R Shenoy
This patch offloads all the blocking calls invoked for v9fs_write onto the
helper threads belonging to the threadlets infrastructure. The handling of
the v9fs_post_*write* calls is done from the io-thread context.
Signed-off-by: Gautham R Shenoy
Signed-off-by: Arun R
From: Gautham R Shenoy
This patch offloads all the blocking calls invoked for v9fs_wstat onto
the helper threads belonging to the threadlets infrastructure.The handling
of the v9fs_post_*wstat* calls is done from the io-thread context.
Signed-off-by: Gautham R Shenoy
---
hw/virtio-9p.c | 291
From: Gautham R Shenoy
Every call to v9fs_stat() is processed in the context of the vcpu thread before
offloading the actual stat operation onto an async-thread. The post operation is
handled in the context of the io-thread which in turn does the complete()
operation for this particular
series implements...
---
Gautham R Shenoy (6):
This patch converts v9fs_stat() to make use of the threadlets
infrastructure.
This patch converts v9fs_wstat() to make use of the threadlets
infrastructure.
This patch converts v9fs_read() to make use of the threadlets
From: Gautham R Shenoy
This patch offloads all the blocking calls invoked for v9fs_write onto the
helper threads belonging to the threadlets infrastructure. The handling of
the v9fs_post_*write* calls is done from the io-thread context.
Signed-off-by: Gautham R Shenoy
Signed-off-by: Arun R
From: Gautham R Shenoy
This patch offloads all the blocking calls invoked for v9fs_wstat onto
the helper threads belonging to the threadlets infrastructure.The handling
of the v9fs_post_*wstat* calls is done from the io-thread context.
Signed-off-by: Gautham R Shenoy
---
hw/virtio-9p.c | 291
From: Gautham R Shenoy
This patch offloads all the blocking calls invoked for v9fs_open onto the
helper threads belonging to the threadlets infrastructure. The handling of
the v9fs_post_*open* calls is done from the io-thread context.
Signed-off-by: Gautham R Shenoy
---
hw/virtio-9p.c | 86
From: Gautham R Shenoy
This patch offloads all the blocking calls invoked for v9fs_walk onto the
helper threads belonging to the threadlets infrastructure. The handling of
the v9fs_post_*walk* calls is done from the io-thread context.
Signed-off-by: Gautham R Shenoy
---
hw/virtio-9p.c | 78
From: Gautham R Shenoy
This patch offloads all the blocking calls invoked for v9fs_read onto the
helper threads belonging to the threadlets infrastructure. The handling of
the v9fs_post_*read* calls is done from the io-thread context.
Signed-off-by: Gautham R Shenoy
Signed-off-by: Arun R
From: Gautham R Shenoy
Every call to v9fs_stat() is processed in the context of the vcpu thread before
offloading the actual stat operation onto an async-thread. The post operation is
handled in the context of the io-thread which in turn does the complete()
operation for this particular
following series implements...
---
Gautham R Shenoy (6):
This patch converts v9fs_stat() to make use of the threadlets
infrastructure.
This patch converts v9fs_wstat() to make use of the threadlets
infrastructure.
This patch converts v9fs_read() to make use of the threadlets
* Arun R Bharadwaj [2010-10-13 22:14:39]:
commit 1da2167c0c68bf24a841affa1bf6d2510cb675f2
Author: Gautham R Shenoy
Date: Wed Oct 13 15:09:20 2010 +0530
Add helper functions for virtio-9p to use threadlets
Add helper functions to enable virtio-9p make use of the threadlets
* Arun R Bharadwaj [2010-10-13 22:14:39]:
Make paio subsystem use threadlets
From: Gautham R Shenoy
This patch makes the paio subsystem use the threadlet framework thereby
decoupling asynchronous threading framework portion out of
posix-aio-compat.c
The patch has been tested with fstress
* Arun R Bharadwaj [2010-10-13 22:14:39]:
commit 1fb4801768722016cd6ec9bbf1271c69b37df2a2
Author: Aneesh Kumar K.V
Date: Tue Oct 12 14:06:10 2010 +0530
Introduce threadlets
This patch creates a generic asynchronous-task-offloading infrastructure
named
threadlets. The core
at
cpu_exit() with IO thread disabled. This version adds a signal
handler for SIGUSR2 to call qemu_service_io() which calls cpu_exit()
The following series implements...
---
Aneesh Kumar K.V (1):
Introduce threadlets
Gautham R Shenoy (2):
Make paio subsystem use threadlets
From: Gautham R Shenoy
Every call to v9fs_stat() is processed in the context of the vcpu thread before
offloading the actual stat operation onto an async-thread. The post operation is
handled in the context of the io-thread which in turn does the complete()
operation for this particular
finished.
* The VCPU/IO thread continues from immediately after the
blocking call until the next blocking call is hit, and
the whole process is repeated till no blocking call is
encountered.
The following series implements...
---
Gautham R Shenoy (6):
This patch converts v9fs_stat() to make
From: Gautham R Shenoy
This patch offloads all the blocking calls invoked for v9fs_open onto the
helper threads belonging to the threadlets infrastructure. The handling of
the v9fs_post_*open* calls is done from the io-thread context.
Signed-off-by: Gautham R Shenoy
---
hw/virtio-9p.c | 86
From: Gautham R Shenoy
This patch offloads all the blocking calls invoked for v9fs_write onto the
helper threads belonging to the threadlets infrastructure. The handling of
the v9fs_post_*write* calls is done from the io-thread context.
Signed-off-by: Gautham R Shenoy
Signed-off-by: Arun R
From: Gautham R Shenoy
This patch offloads all the blocking calls invoked for v9fs_read onto the
helper threads belonging to the threadlets infrastructure. The handling of
the v9fs_post_*read* calls is done from the io-thread context.
Signed-off-by: Gautham R Shenoy
Signed-off-by: Arun R
From: Gautham R Shenoy
This patch offloads all the blocking calls invoked for v9fs_wstat onto
the helper threads belonging to the threadlets infrastructure.The handling
of the v9fs_post_*wstat* calls is done from the io-thread context.
Signed-off-by: Gautham R Shenoy
---
hw/virtio-9p.c | 291
From: Gautham R Shenoy
This patch offloads all the blocking calls invoked for v9fs_walk onto the
helper threads belonging to the threadlets infrastructure. The handling of
the v9fs_post_*walk* calls is done from the io-thread context.
Signed-off-by: Gautham R Shenoy
---
hw/virtio-9p.c | 78
From: Gautham R Shenoy
Add helper functions to enable virtio-9p make use of the threadlets
infrastructure for offloading blocking tasks such as making posix calls on
to the helper threads and handle the post_posix_operations() from the
context of the iothread. This frees the vcpu thread to
From: Gautham R Shenoy
This patch makes the paio subsystem use the threadlet framework thereby
decoupling asynchronous threading framework portion out of
posix-aio-compat.c
The patch has been tested with fstress.
Signed-off-by: Gautham R Shenoy
Signed-off-by: Sripathi Kodi
---
posix-aio
reads.
[...@in.ibm.com: Facelift of the code, Documentation, cancel_threadlet
and other helpers]
Signed-off-by: Aneesh Kumar K.V
Signed-off-by: Gautham R Shenoy
Signed-off-by: Sripathi Kodi
Signed-off-by: Arun R Bharadwaj
---
Makefile.objs |3 +
docs/async-support.txt |
at
cpu_exit() with IO thread disabled. This version adds a signal
handler for SIGUSR2 to call qemu_service_io() which calls cpu_exit()
The following series implements...
---
Aneesh Kumar K.V (1):
Introduce threadlets
Gautham R Shenoy (2):
Make paio subsystem use threadlets
Hi,
I am working on introducing threading model into Qemu. This introduces
the Threadlets infrastructure which allows subsystems to offload possibly
blocking work to a queue to be processed by a pool of threads asynchrnonously.
Threadlets are useful when there are operations that can be performed
* Venkateswararao Jujjuri (JV) [2010-07-14 04:25:21]:
> Arun R Bharadwaj wrote:
> > Hi,
> >
> > This patch cleans up the legacy 'dotu' variable which is always set to
> > 1 by default, since qemu doesnt support legacy 9p clients.
>
> Do we have 2/2 i
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