From: Paolo Bonzini <pbonzini@redhat.com>
To: qemu-devel@nongnu.org
Cc: stefanha@redhat.com
Subject: [Qemu-devel] [PATCH 08/16] aio: rename bh_lock to list_lock
Date: Tue, 9 Feb 2016 12:46:06 +0100 [thread overview]
Message-ID: <1455018374-4706-9-git-send-email-pbonzini@redhat.com> (raw)
In-Reply-To: <1455018374-4706-1-git-send-email-pbonzini@redhat.com>
This will be used for AioHandlers too. There is going to be little
or no contention, so it is better to reuse the same lock.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
async.c | 16 ++++++++--------
include/block/aio.h | 2 +-
2 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/async.c b/async.c
index fc11b1c..f0019d4 100644
--- a/async.c
+++ b/async.c
@@ -51,12 +51,12 @@ QEMUBH *aio_bh_new(AioContext *ctx, QEMUBHFunc *cb, void *opaque)
.cb = cb,
.opaque = opaque,
};
- qemu_mutex_lock(&ctx->bh_lock);
+ qemu_mutex_lock(&ctx->list_lock);
bh->next = ctx->first_bh;
/* Make sure that the members are ready before putting bh into list */
smp_wmb();
ctx->first_bh = bh;
- qemu_mutex_unlock(&ctx->bh_lock);
+ qemu_mutex_unlock(&ctx->list_lock);
return bh;
}
@@ -98,7 +98,7 @@ int aio_bh_poll(AioContext *ctx)
/* remove deleted bhs */
if (!ctx->walking_bh) {
- qemu_mutex_lock(&ctx->bh_lock);
+ qemu_mutex_lock(&ctx->list_lock);
bhp = &ctx->first_bh;
while (*bhp) {
bh = *bhp;
@@ -109,7 +109,7 @@ int aio_bh_poll(AioContext *ctx)
bhp = &bh->next;
}
}
- qemu_mutex_unlock(&ctx->bh_lock);
+ qemu_mutex_unlock(&ctx->list_lock);
}
return ret;
@@ -240,7 +240,7 @@ aio_ctx_finalize(GSource *source)
thread_pool_free(ctx->thread_pool);
- qemu_mutex_lock(&ctx->bh_lock);
+ qemu_mutex_lock(&ctx->list_lock);
while (ctx->first_bh) {
QEMUBH *next = ctx->first_bh->next;
@@ -250,12 +250,12 @@ aio_ctx_finalize(GSource *source)
g_free(ctx->first_bh);
ctx->first_bh = next;
}
- qemu_mutex_unlock(&ctx->bh_lock);
+ qemu_mutex_unlock(&ctx->list_lock);
aio_set_event_notifier(ctx, &ctx->notifier, false, NULL);
event_notifier_cleanup(&ctx->notifier);
qemu_rec_mutex_destroy(&ctx->lock);
- qemu_mutex_destroy(&ctx->bh_lock);
+ qemu_mutex_destroy(&ctx->list_lock);
timerlistgroup_deinit(&ctx->tlg);
}
@@ -550,7 +550,7 @@ AioContext *aio_context_new(Error **errp)
(EventNotifierHandler *)
event_notifier_dummy_cb);
ctx->thread_pool = NULL;
- qemu_mutex_init(&ctx->bh_lock);
+ qemu_mutex_init(&ctx->list_lock);
qemu_rec_mutex_init(&ctx->lock);
timerlistgroup_init(&ctx->tlg, aio_timerlist_notify, ctx);
diff --git a/include/block/aio.h b/include/block/aio.h
index 3f055d2..322a10e 100644
--- a/include/block/aio.h
+++ b/include/block/aio.h
@@ -88,7 +88,7 @@ struct AioContext {
uint32_t notify_me;
/* lock to protect between bh's adders and deleter */
- QemuMutex bh_lock;
+ QemuMutex list_lock;
/* Anchor of the list of Bottom Halves belonging to the context */
struct QEMUBH *first_bh;
--
2.5.0
next prev parent reply other threads:[~2016-02-09 11:46 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-09 11:45 [Qemu-devel] [PATCH v3 00/16] aio: first part of aio_context_acquire/release pushdown Paolo Bonzini
2016-02-09 11:45 ` [Qemu-devel] [PATCH 01/16] aio: introduce aio_context_in_iothread Paolo Bonzini
2016-02-09 11:46 ` [Qemu-devel] [PATCH 02/16] aio: do not really acquire/release the main AIO context Paolo Bonzini
2016-02-09 11:46 ` [Qemu-devel] [PATCH 03/16] aio: introduce aio_poll_internal Paolo Bonzini
2016-02-09 11:46 ` [Qemu-devel] [PATCH 04/16] aio: only call aio_poll_internal from iothread Paolo Bonzini
2016-02-09 11:46 ` [Qemu-devel] [PATCH 05/16] iothread: release AioContext around aio_poll Paolo Bonzini
2016-02-09 11:46 ` [Qemu-devel] [PATCH 06/16] qemu-thread: introduce QemuRecMutex Paolo Bonzini
2016-02-09 11:46 ` [Qemu-devel] [PATCH 07/16] aio: convert from RFifoLock to QemuRecMutex Paolo Bonzini
2016-02-09 11:46 ` Paolo Bonzini [this message]
2016-02-09 11:46 ` [Qemu-devel] [PATCH 09/16] qemu-thread: introduce QemuLockCnt Paolo Bonzini
2016-02-09 11:46 ` [Qemu-devel] [PATCH 10/16] aio: make ctx->list_lock a QemuLockCnt, subsuming ctx->walking_bh Paolo Bonzini
2016-02-09 11:46 ` [Qemu-devel] [PATCH 11/16] qemu-thread: optimize QemuLockCnt with futexes on Linux Paolo Bonzini
2016-02-09 11:46 ` [Qemu-devel] [PATCH 12/16] aio: tweak walking in dispatch phase Paolo Bonzini
2016-02-09 11:46 ` [Qemu-devel] [PATCH 13/16] aio-posix: remove walking_handlers, protecting AioHandler list with list_lock Paolo Bonzini
2016-02-09 11:46 ` [Qemu-devel] [PATCH 14/16] aio-win32: " Paolo Bonzini
2016-02-09 11:46 ` [Qemu-devel] [PATCH 15/16] aio: document locking Paolo Bonzini
2016-02-09 11:46 ` [Qemu-devel] [PATCH 16/16] aio: push aio_context_acquire/release down to dispatching Paolo Bonzini
2016-02-09 14:01 ` [Qemu-devel] [PATCH v3 00/16] aio: first part of aio_context_acquire/release pushdown Stefan Hajnoczi
-- strict thread matches above, loose matches on Subject: below --
2016-02-08 16:14 [Qemu-devel] [PATCH v2 " Paolo Bonzini
2016-02-08 16:14 ` [Qemu-devel] [PATCH 08/16] aio: rename bh_lock to list_lock Paolo Bonzini
2016-01-15 15:12 [Qemu-devel] [PATCH 00/16] aio: first part of aio_context_acquire/release pushdown Paolo Bonzini
2016-01-15 15:12 ` [Qemu-devel] [PATCH 08/16] aio: rename bh_lock to list_lock Paolo Bonzini
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