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From: Peter Xu <peterx@redhat.com>
To: qemu-devel@nongnu.org
Cc: Paolo Bonzini <pbonzini@redhat.com>,
	David Hildenbrand <david@redhat.com>,
	peterx@redhat.com, Richard Henderson <rth@twiddle.net>
Subject: [PATCH v2 6/9] cpus: Remove the mutex parameter from do_run_on_cpu()
Date: Fri, 23 Jul 2021 15:34:41 -0400	[thread overview]
Message-ID: <20210723193444.133412-7-peterx@redhat.com> (raw)
In-Reply-To: <20210723193444.133412-1-peterx@redhat.com>

We must use the BQL for do_run_on_cpu() without much choice, it means the
parameter is helpless.  Remove it.  Meanwhile use the newly introduced
qemu_cond_wait_iothread() in do_run_on_cpu().

Signed-off-by: Peter Xu <peterx@redhat.com>
---
 softmmu/cpus.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/softmmu/cpus.c b/softmmu/cpus.c
index 94c2804192..9131f77f87 100644
--- a/softmmu/cpus.c
+++ b/softmmu/cpus.c
@@ -383,8 +383,7 @@ void qemu_init_cpu_loop(void)
 }
 
 static void
-do_run_on_cpu(CPUState *cpu, run_on_cpu_func func, run_on_cpu_data data,
-              QemuMutex *mutex)
+do_run_on_cpu(CPUState *cpu, run_on_cpu_func func, run_on_cpu_data data)
 {
     struct qemu_work_item wi;
 
@@ -403,14 +402,14 @@ do_run_on_cpu(CPUState *cpu, run_on_cpu_func func, run_on_cpu_data data,
     while (!qatomic_mb_read(&wi.done)) {
         CPUState *self_cpu = current_cpu;
 
-        qemu_cond_wait(&qemu_work_cond, mutex);
+        qemu_cond_wait_iothread(&qemu_work_cond);
         current_cpu = self_cpu;
     }
 }
 
 void run_on_cpu(CPUState *cpu, run_on_cpu_func func, run_on_cpu_data data)
 {
-    do_run_on_cpu(cpu, func, data, &qemu_global_mutex);
+    do_run_on_cpu(cpu, func, data);
 }
 
 static void qemu_cpu_stop(CPUState *cpu, bool exit)
-- 
2.31.1



  parent reply	other threads:[~2021-07-23 19:38 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-23 19:34 [PATCH v2 0/9] memory: Sanity checks memory transaction when releasing BQL Peter Xu
2021-07-23 19:34 ` [PATCH v2 1/9] cpus: Export queue work related fields to cpu.h Peter Xu
2021-07-27 13:02   ` David Hildenbrand
2021-07-23 19:34 ` [PATCH v2 2/9] cpus: Move do_run_on_cpu into softmmu/cpus.c Peter Xu
2021-07-27 13:04   ` David Hildenbrand
2021-07-23 19:34 ` [PATCH v2 3/9] memory: Introduce memory_region_transaction_{push|pop}() Peter Xu
2021-07-27 13:06   ` David Hildenbrand
2021-07-23 19:34 ` [PATCH v2 4/9] memory: Don't do topology update in memory finalize() Peter Xu
2021-07-27 13:21   ` David Hildenbrand
2021-07-27 16:02     ` Peter Xu
2021-07-28 12:13       ` David Hildenbrand
2021-07-28 13:56         ` Peter Xu
2021-07-28 14:01           ` David Hildenbrand
2021-07-23 19:34 ` [PATCH v2 5/9] cpus: Use qemu_cond_wait_iothread() where proper Peter Xu
2021-07-27 12:49   ` David Hildenbrand
2021-07-23 19:34 ` Peter Xu [this message]
2021-07-27 12:50   ` [PATCH v2 6/9] cpus: Remove the mutex parameter from do_run_on_cpu() David Hildenbrand
2021-07-23 19:34 ` [PATCH v2 7/9] cpus: Introduce qemu_mutex_unlock_iothread_prepare() Peter Xu
2021-07-27 12:59   ` David Hildenbrand
2021-07-27 16:08     ` Peter Xu
2021-07-28 12:11       ` David Hildenbrand
2021-07-23 19:34 ` [PATCH v2 8/9] memory: Assert on no ongoing memory transaction before release BQL Peter Xu
2021-07-27 13:00   ` David Hildenbrand
2021-07-23 19:34 ` [PATCH v2 9/9] memory: Delay the transaction pop() until commit completed Peter Xu
2021-07-27 13:02   ` David Hildenbrand
2021-07-23 22:36 ` [PATCH v2 0/9] memory: Sanity checks memory transaction when releasing BQL Peter Xu
2021-07-27 12:41 ` David Hildenbrand
2021-07-27 16:35   ` Peter Xu

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