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[PATCH 2/6] plugins/cache: limited the scope of a mutex lock
From: |
Mahmoud Mandour |
Subject: |
[PATCH 2/6] plugins/cache: limited the scope of a mutex lock |
Date: |
Wed, 14 Jul 2021 19:21:48 +0200 |
It's not necessary to lock the address translation portion of the
vcpu_mem_access callback.
Signed-off-by: Mahmoud Mandour <ma.mandourr@gmail.com>
---
contrib/plugins/cache.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/contrib/plugins/cache.c b/contrib/plugins/cache.c
index 4a71602639..695fb969dc 100644
--- a/contrib/plugins/cache.c
+++ b/contrib/plugins/cache.c
@@ -355,15 +355,14 @@ static void vcpu_mem_access(unsigned int vcpu_index,
qemu_plugin_meminfo_t info,
struct qemu_plugin_hwaddr *hwaddr;
InsnData *insn;
- g_mutex_lock(&mtx);
hwaddr = qemu_plugin_get_hwaddr(info, vaddr);
if (hwaddr && qemu_plugin_hwaddr_is_io(hwaddr)) {
- g_mutex_unlock(&mtx);
return;
}
effective_addr = hwaddr ? qemu_plugin_hwaddr_phys_addr(hwaddr) : vaddr;
+ g_mutex_lock(&mtx);
if (!access_cache(dcache, effective_addr)) {
insn = (InsnData *) userdata;
insn->dmisses++;
--
2.25.1
- Re: [PATCH 1/6] plugins/cache: Fixed a bug with destroying FIFO metadata, (continued)
[PATCH 5/6] docs/devel/tcg-plugins: added cores arg to cache plugin, Mahmoud Mandour, 2021/07/14
[PATCH 4/6] plugins/cache: Supported multicore cache modelling, Mahmoud Mandour, 2021/07/14
[PATCH 2/6] plugins/cache: limited the scope of a mutex lock,
Mahmoud Mandour <=
[PATCH 6/6] plugins/cache: Fixed "function decl. is not a prototype" warnings, Mahmoud Mandour, 2021/07/14
Re: [PATCH 0/6] plugins/cache: multicore cache emulation and minor, Alex Bennée, 2021/07/20