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From: huangy81@chinatelecom.cn
To: qemu-devel@nongnu.org
Cc: Eduardo Habkost <ehabkost@redhat.com>,
	Juan Quintela <quintela@redhat.com>,
	Hyman <huangy81@chinatelecom.cn>,
	"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
	Peter Xu <peterx@redhat.com>, Chuan Zheng <zhengchuan@huawei.com>,
	Paolo Bonzini <pbonzini@redhat.com>
Subject: [PATCH v7 2/7] memory: rename global_dirty_log to global_dirty_tracking
Date: Thu, 17 Jun 2021 22:12:03 +0800	[thread overview]
Message-ID: <3cf8b84e41bb27d863f4e4d4148aee52a112bb3d.1623938622.git.huangy81@chinatelecom.cn> (raw)
In-Reply-To: <cover.1623938622.git.huangy81@chinatelecom.cn>
In-Reply-To: <cover.1623938622.git.huangy81@chinatelecom.cn>

From: Hyman Huang(黄勇) <huangy81@chinatelecom.cn>

since dirty ring has been introduced, there are two methods
to track dirty pages of vm. it seems that "logging" has
a hint on the method, so rename the global_dirty_log to
global_dirty_tracking would make description more accurate.

Signed-off-by: Hyman Huang(黄勇) <huangy81@chinatelecom.cn>
---
 include/exec/memory.h   |  2 +-
 include/exec/ram_addr.h |  4 ++--
 softmmu/memory.c        | 10 +++++-----
 3 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/include/exec/memory.h b/include/exec/memory.h
index b114f54..cc0e549 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -55,7 +55,7 @@ static inline void fuzz_dma_read_cb(size_t addr,
 }
 #endif
 
-extern bool global_dirty_log;
+extern bool global_dirty_tracking;
 
 typedef struct MemoryRegionOps MemoryRegionOps;
 
diff --git a/include/exec/ram_addr.h b/include/exec/ram_addr.h
index 3cb9791..a0bce11 100644
--- a/include/exec/ram_addr.h
+++ b/include/exec/ram_addr.h
@@ -372,7 +372,7 @@ static inline void cpu_physical_memory_set_dirty_lebitmap(unsigned long *bitmap,
 
                     qatomic_or(&blocks[DIRTY_MEMORY_VGA][idx][offset], temp);
 
-                    if (global_dirty_log) {
+                    if (global_dirty_tracking) {
                         qatomic_or(
                                 &blocks[DIRTY_MEMORY_MIGRATION][idx][offset],
                                 temp);
@@ -395,7 +395,7 @@ static inline void cpu_physical_memory_set_dirty_lebitmap(unsigned long *bitmap,
     } else {
         uint8_t clients = tcg_enabled() ? DIRTY_CLIENTS_ALL : DIRTY_CLIENTS_NOCODE;
 
-        if (!global_dirty_log) {
+        if (!global_dirty_tracking) {
             clients &= ~(1 << DIRTY_MEMORY_MIGRATION);
         }
 
diff --git a/softmmu/memory.c b/softmmu/memory.c
index c19b0be..5682053 100644
--- a/softmmu/memory.c
+++ b/softmmu/memory.c
@@ -39,7 +39,7 @@
 static unsigned memory_region_transaction_depth;
 static bool memory_region_update_pending;
 static bool ioeventfd_update_pending;
-bool global_dirty_log;
+bool global_dirty_tracking;
 
 static QTAILQ_HEAD(, MemoryListener) memory_listeners
     = QTAILQ_HEAD_INITIALIZER(memory_listeners);
@@ -1813,7 +1813,7 @@ uint8_t memory_region_get_dirty_log_mask(MemoryRegion *mr)
     uint8_t mask = mr->dirty_log_mask;
     RAMBlock *rb = mr->ram_block;
 
-    if (global_dirty_log && ((rb && qemu_ram_is_migratable(rb)) ||
+    if (global_dirty_tracking && ((rb && qemu_ram_is_migratable(rb)) ||
                              memory_region_is_iommu(mr))) {
         mask |= (1 << DIRTY_MEMORY_MIGRATION);
     }
@@ -2666,7 +2666,7 @@ void memory_global_dirty_log_start(void)
         vmstate_change = NULL;
     }
 
-    global_dirty_log = true;
+    global_dirty_tracking = true;
 
     MEMORY_LISTENER_CALL_GLOBAL(log_global_start, Forward);
 
@@ -2678,7 +2678,7 @@ void memory_global_dirty_log_start(void)
 
 static void memory_global_dirty_log_do_stop(void)
 {
-    global_dirty_log = false;
+    global_dirty_tracking = false;
 
     /* Refresh DIRTY_MEMORY_MIGRATION bit.  */
     memory_region_transaction_begin();
@@ -2724,7 +2724,7 @@ static void listener_add_address_space(MemoryListener *listener,
     if (listener->begin) {
         listener->begin(listener);
     }
-    if (global_dirty_log) {
+    if (global_dirty_tracking) {
         if (listener->log_global_start) {
             listener->log_global_start(listener);
         }
-- 
1.8.3.1



  parent reply	other threads:[~2021-06-17 14:09 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-17 14:12 [PATCH v7 0/7] support dirtyrate at the granualrity of vcpu huangy81
2021-06-17 14:12 ` [PATCH v7 1/7] KVM: introduce dirty_pages and kvm_dirty_ring_enabled huangy81
2021-06-17 14:12 ` huangy81 [this message]
2021-06-17 14:12 ` [PATCH v7 3/7] memory: make global_dirty_tracking a bitmask huangy81
2021-06-17 15:29   ` Peter Xu
2021-06-18  0:36     ` Hyman Huang
2021-06-18  0:50     ` Hyman Huang
2021-06-17 14:12 ` [PATCH v7 4/7] migration/dirtyrate: introduce struct and adjust DirtyRateStat huangy81
2021-06-17 15:27   ` Peter Xu
2021-06-18  0:35     ` Hyman Huang
2021-06-17 14:12 ` [PATCH v7 5/7] migration/dirtyrate: adjust order of registering thread huangy81
2021-06-17 14:12 ` [PATCH v7 6/7] migration/dirtyrate: move init step of calculation to main thread huangy81
2021-06-17 15:34   ` Peter Xu
2021-06-18  1:16     ` Hyman Huang
2021-06-17 14:12 ` [PATCH v7 7/7] migration/dirtyrate: implement dirty-ring dirtyrate calculation huangy81
2021-06-17 15:41   ` Peter Xu

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