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[Qemu-devel] [PATCH 11/12] block: report RCU quiescent states
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH 11/12] block: report RCU quiescent states |
Date: |
Wed, 15 May 2013 17:48:56 +0200 |
The aio workers may spend a long time executing I/O operations;
mark that time as an extended quiescent state.
Signed-off-by: Paolo Bonzini <address@hidden>
---
block/raw-posix.c | 3 +++
block/raw-win32.c | 3 +++
2 files changed, 6 insertions(+)
diff --git a/block/raw-posix.c b/block/raw-posix.c
index c0ccf27..637fe8a 100644
--- a/block/raw-posix.c
+++ b/block/raw-posix.c
@@ -26,6 +26,7 @@
#include "qemu/log.h"
#include "block/block_int.h"
#include "qemu/module.h"
+#include "qemu/rcu.h"
#include "trace.h"
#include "block/thread-pool.h"
#include "qemu/iov.h"
@@ -735,6 +736,7 @@ static int aio_worker(void *arg)
RawPosixAIOData *aiocb = arg;
ssize_t ret = 0;
+ rcu_thread_offline();
switch (aiocb->aio_type & QEMU_AIO_TYPE_MASK) {
case QEMU_AIO_READ:
ret = handle_aiocb_rw(aiocb);
@@ -774,6 +776,7 @@ static int aio_worker(void *arg)
}
g_slice_free(RawPosixAIOData, aiocb);
+ rcu_thread_online();
return ret;
}
diff --git a/block/raw-win32.c b/block/raw-win32.c
index 7c03b6d..fc573b7 100644
--- a/block/raw-win32.c
+++ b/block/raw-win32.c
@@ -25,6 +25,7 @@
#include "qemu/timer.h"
#include "block/block_int.h"
#include "qemu/module.h"
+#include "qemu/rcu.h"
#include "raw-aio.h"
#include "trace.h"
#include "block/thread-pool.h"
@@ -99,6 +100,7 @@ static int aio_worker(void *arg)
ssize_t ret = 0;
size_t count;
+ rcu_thread_offline();
switch (aiocb->aio_type & QEMU_AIO_TYPE_MASK) {
case QEMU_AIO_READ:
count = handle_aiocb_rw(aiocb);
@@ -136,6 +138,7 @@ static int aio_worker(void *arg)
}
g_slice_free(RawWin32AIOData, aiocb);
+ rcu_thread_online();
return ret;
}
--
1.8.1.4
- [Qemu-devel] [PATCH 04/12] qemu-thread: register threads with RCU, (continued)
- [Qemu-devel] [PATCH 04/12] qemu-thread: register threads with RCU, Paolo Bonzini, 2013/05/15
- [Qemu-devel] [PATCH 05/12] rcu: add call_rcu, Paolo Bonzini, 2013/05/15
- [Qemu-devel] [PATCH 06/12] rcu: add rcutorture, Paolo Bonzini, 2013/05/15
- [Qemu-devel] [PATCH 09/12] event loop: report RCU quiescent states, Paolo Bonzini, 2013/05/15
- [Qemu-devel] [PATCH 08/12] qemu-thread: report RCU quiescent states, Paolo Bonzini, 2013/05/15
- [Qemu-devel] [PATCH 10/12] cpus: report RCU quiescent states, Paolo Bonzini, 2013/05/15
- [Qemu-devel] [PATCH 01/12] add a header file for atomic operations, Paolo Bonzini, 2013/05/15
- [Qemu-devel] [PATCH 11/12] block: report RCU quiescent states,
Paolo Bonzini <=
- [Qemu-devel] [PATCH 12/12] migration: report RCU quiescent states, Paolo Bonzini, 2013/05/15
- [Qemu-devel] [PATCH 07/12] rcu: allow nested calls to rcu_thread_offline/rcu_thread_online, Paolo Bonzini, 2013/05/15
- Re: [Qemu-devel] [RFC PATCH 00/12] RCU implementation for QEMU, Peter Maydell, 2013/05/15
- Re: [Qemu-devel] [RFC PATCH 00/12] RCU implementation for QEMU, Peter Maydell, 2013/05/15
- Re: [Qemu-devel] [RFC PATCH 00/12] RCU implementation for QEMU, Peter Maydell, 2013/05/15