qemu-kvm/SOURCES/kvm-migration-Make-dirty_sync_missed_zero_copy-atomic.patch
2023-11-07 09:43:59 +00:00

93 lines
3.1 KiB
Diff

From e9ff20d7f7e6c2354f3696e8bca265e535eeb801 Mon Sep 17 00:00:00 2001
From: Juan Quintela <quintela@redhat.com>
Date: Tue, 11 Apr 2023 17:33:56 +0200
Subject: [PATCH 11/56] migration: Make dirty_sync_missed_zero_copy atomic
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Peter Xu <peterx@redhat.com>
RH-MergeRequest: 162: migration: Pretty failures for postcopy on unsupported memory types
RH-Bugzilla: 2057267
RH-Acked-by: Leonardo Brás <leobras@redhat.com>
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Acked-by: quintela1 <quintela@redhat.com>
RH-Commit: [10/50] 041230abb087db0e7ffae02b4f85772490b805a0 (peterx/qemu-kvm)
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
(cherry picked from commit 4291823694fd8507831d26e2558d9cd0030841f7)
Signed-off-by: Peter Xu <peterx@redhat.com>
---
migration/migration.c | 2 +-
migration/multifd.c | 2 +-
migration/ram.c | 5 -----
migration/ram.h | 4 +---
4 files changed, 3 insertions(+), 10 deletions(-)
diff --git a/migration/migration.c b/migration/migration.c
index ca68808b5c..645fb4b3c5 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -1150,7 +1150,7 @@ static void populate_ram_info(MigrationInfo *info, MigrationState *s)
info->ram->mbps = s->mbps;
info->ram->dirty_sync_count = ram_counters.dirty_sync_count;
info->ram->dirty_sync_missed_zero_copy =
- ram_counters.dirty_sync_missed_zero_copy;
+ stat64_get(&ram_counters.dirty_sync_missed_zero_copy);
info->ram->postcopy_requests = ram_counters.postcopy_requests;
info->ram->page_size = page_size;
info->ram->multifd_bytes = stat64_get(&ram_counters.multifd_bytes);
diff --git a/migration/multifd.c b/migration/multifd.c
index 1c992abf53..903df2117b 100644
--- a/migration/multifd.c
+++ b/migration/multifd.c
@@ -576,7 +576,7 @@ static int multifd_zero_copy_flush(QIOChannel *c)
return -1;
}
if (ret == 1) {
- dirty_sync_missed_zero_copy();
+ stat64_add(&ram_counters.dirty_sync_missed_zero_copy, 1);
}
return ret;
diff --git a/migration/ram.c b/migration/ram.c
index 71320ed27a..93e0a48af4 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -472,11 +472,6 @@ void ram_transferred_add(uint64_t bytes)
stat64_add(&ram_counters.transferred, bytes);
}
-void dirty_sync_missed_zero_copy(void)
-{
- ram_counters.dirty_sync_missed_zero_copy++;
-}
-
struct MigrationOps {
int (*ram_save_target_page)(RAMState *rs, PageSearchStatus *pss);
};
diff --git a/migration/ram.h b/migration/ram.h
index ed70391317..2170c55e67 100644
--- a/migration/ram.h
+++ b/migration/ram.h
@@ -43,7 +43,7 @@
typedef struct {
int64_t dirty_pages_rate;
int64_t dirty_sync_count;
- uint64_t dirty_sync_missed_zero_copy;
+ Stat64 dirty_sync_missed_zero_copy;
uint64_t downtime_bytes;
Stat64 duplicate;
Stat64 multifd_bytes;
@@ -114,6 +114,4 @@ void ram_write_tracking_prepare(void);
int ram_write_tracking_start(void);
void ram_write_tracking_stop(void);
-void dirty_sync_missed_zero_copy(void);
-
#endif
--
2.39.1