From 48408174a7ec7bfdc18c6d9886d0eeb20520a349 Mon Sep 17 00:00:00 2001 From: Juan Quintela Date: Wed, 11 Oct 2023 22:35:16 +0200 Subject: [PATCH] migration/rdma: Unfold ram_control_before_iterate() Once there: - Remove unused data parameter - unfold it in its callers. - change all callers to call qemu_rdma_registration_start() - We need to call QIO_CHANNEL_RDMA() after we check for migrate_rdma() Reviewed-by: Li Zhijian Reviewed-by: Fabiano Rosas Signed-off-by: Juan Quintela Message-ID: <20231011203527.9061-3-quintela@redhat.com> --- migration/qemu-file.c | 13 +------------ migration/qemu-file.h | 2 -- migration/ram.c | 16 +++++++++++++--- migration/rdma.c | 12 ++++-------- migration/rdma.h | 7 +++++++ 5 files changed, 25 insertions(+), 25 deletions(-) diff --git a/migration/qemu-file.c b/migration/qemu-file.c index 7fb659296f..5e2d73fd68 100644 --- a/migration/qemu-file.c +++ b/migration/qemu-file.c @@ -32,6 +32,7 @@ #include "trace.h" #include "options.h" #include "qapi/error.h" +#include "rdma.h" #define IO_BUF_SIZE 32768 #define MAX_IOV_SIZE MIN_CONST(IOV_MAX, 64) @@ -297,18 +298,6 @@ void qemu_fflush(QEMUFile *f) f->iovcnt = 0; } -void ram_control_before_iterate(QEMUFile *f, uint64_t flags) -{ - int ret = 0; - - if (f->hooks && f->hooks->before_ram_iterate) { - ret = f->hooks->before_ram_iterate(f, flags, NULL); - if (ret < 0) { - qemu_file_set_error(f, ret); - } - } -} - void ram_control_after_iterate(QEMUFile *f, uint64_t flags) { int ret = 0; diff --git a/migration/qemu-file.h b/migration/qemu-file.h index 03e718c264..d6a370c569 100644 --- a/migration/qemu-file.h +++ b/migration/qemu-file.h @@ -55,7 +55,6 @@ typedef int (QEMURamSaveFunc)(QEMUFile *f, size_t size); typedef struct QEMUFileHooks { - QEMURamHookFunc *before_ram_iterate; QEMURamHookFunc *after_ram_iterate; QEMURamHookFunc *hook_ram_load; QEMURamSaveFunc *save_page; @@ -127,7 +126,6 @@ void qemu_fflush(QEMUFile *f); void qemu_file_set_blocking(QEMUFile *f, bool block); int qemu_file_get_to_fd(QEMUFile *f, int fd, size_t size); -void ram_control_before_iterate(QEMUFile *f, uint64_t flags); void ram_control_after_iterate(QEMUFile *f, uint64_t flags); void ram_control_load_hook(QEMUFile *f, uint64_t flags, void *data); diff --git a/migration/ram.c b/migration/ram.c index acb8f95f00..6592431a4e 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -59,6 +59,7 @@ #include "qemu/iov.h" #include "multifd.h" #include "sysemu/runstate.h" +#include "rdma.h" #include "options.h" #include "sysemu/dirtylimit.h" #include "sysemu/kvm.h" @@ -3060,7 +3061,10 @@ static int ram_save_setup(QEMUFile *f, void *opaque) } } - ram_control_before_iterate(f, RAM_CONTROL_SETUP); + ret = qemu_rdma_registration_start(f, RAM_CONTROL_SETUP); + if (ret < 0) { + qemu_file_set_error(f, ret); + } ram_control_after_iterate(f, RAM_CONTROL_SETUP); migration_ops = g_malloc0(sizeof(MigrationOps)); @@ -3123,7 +3127,10 @@ static int ram_save_iterate(QEMUFile *f, void *opaque) /* Read version before ram_list.blocks */ smp_rmb(); - ram_control_before_iterate(f, RAM_CONTROL_ROUND); + ret = qemu_rdma_registration_start(f, RAM_CONTROL_ROUND); + if (ret < 0) { + qemu_file_set_error(f, ret); + } t0 = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); i = 0; @@ -3228,7 +3235,10 @@ static int ram_save_complete(QEMUFile *f, void *opaque) migration_bitmap_sync_precopy(rs, true); } - ram_control_before_iterate(f, RAM_CONTROL_FINISH); + ret = qemu_rdma_registration_start(f, RAM_CONTROL_FINISH); + if (ret < 0) { + qemu_file_set_error(f, ret); + } /* try transferring iterative blocks of memory */ diff --git a/migration/rdma.c b/migration/rdma.c index f155f3e1c8..3d74ad6db0 100644 --- a/migration/rdma.c +++ b/migration/rdma.c @@ -3850,18 +3850,15 @@ static int rdma_load_hook(QEMUFile *f, uint64_t flags, void *data) } } -static int qemu_rdma_registration_start(QEMUFile *f, - uint64_t flags, void *data) +int qemu_rdma_registration_start(QEMUFile *f, uint64_t flags) { - QIOChannelRDMA *rioc = QIO_CHANNEL_RDMA(qemu_file_get_ioc(f)); - RDMAContext *rdma; - - if (migration_in_postcopy()) { + if (!migrate_rdma() || migration_in_postcopy()) { return 0; } + QIOChannelRDMA *rioc = QIO_CHANNEL_RDMA(qemu_file_get_ioc(f)); RCU_READ_LOCK_GUARD(); - rdma = qatomic_rcu_read(&rioc->rdmaout); + RDMAContext *rdma = qatomic_rcu_read(&rioc->rdmaout); if (!rdma) { return -1; } @@ -4002,7 +3999,6 @@ static const QEMUFileHooks rdma_read_hooks = { }; static const QEMUFileHooks rdma_write_hooks = { - .before_ram_iterate = qemu_rdma_registration_start, .after_ram_iterate = qemu_rdma_registration_stop, .save_page = qemu_rdma_save_page, }; diff --git a/migration/rdma.h b/migration/rdma.h index de2ba09dc5..670c67a8cb 100644 --- a/migration/rdma.h +++ b/migration/rdma.h @@ -22,4 +22,11 @@ void rdma_start_outgoing_migration(void *opaque, const char *host_port, void rdma_start_incoming_migration(const char *host_port, Error **errp); + +#ifdef CONFIG_RDMA +int qemu_rdma_registration_start(QEMUFile *f, uint64_t flags); +#else +static inline +int qemu_rdma_registration_start(QEMUFile *f, uint64_t flags) { return 0; } +#endif #endif