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qemu_ram_foreach_block: pass up error value, and down the ramblock name

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check the return value of the function it calls and error if it's non-0
Fixup qemu_rdma_init_one_block that is the only current caller,
  and rdma_add_block the only function it calls using it.

Pass the name of the ramblock to the function; helps in debugging.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Reviewed-by: Michael R. Hines <mrhines@us.ibm.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Dr. David Alan Gilbert 2015-05-21 13:24:13 +01:00 committed by Juan Quintela
parent f796baa1b3
commit e3807054e2
3 changed files with 12 additions and 6 deletions
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10
exec.c
View File

@ -3345,14 +3345,20 @@ bool cpu_physical_memory_is_io(hwaddr phys_addr)
return res;
}
void qemu_ram_foreach_block(RAMBlockIterFunc func, void *opaque)
int qemu_ram_foreach_block(RAMBlockIterFunc func, void *opaque)
{
RAMBlock *block;
int ret = 0;
rcu_read_lock();
QLIST_FOREACH_RCU(block, &ram_list.blocks, next) {
func(block->host, block->offset, block->used_length, opaque);
ret = func(block->idstr, block->host, block->offset,
block->used_length, opaque);
if (ret) {
break;
}
}
rcu_read_unlock();
return ret;
}
#endif

4
include/exec/cpu-common.h
View File

@ -126,10 +126,10 @@ void cpu_flush_icache_range(hwaddr start, int len);
extern struct MemoryRegion io_mem_rom;
extern struct MemoryRegion io_mem_notdirty;
typedef void (RAMBlockIterFunc)(void *host_addr,
typedef int (RAMBlockIterFunc)(const char *block_name, void *host_addr,
ram_addr_t offset, ram_addr_t length, void *opaque);
void qemu_ram_foreach_block(RAMBlockIterFunc func, void *opaque);
int qemu_ram_foreach_block(RAMBlockIterFunc func, void *opaque);
#endif

4
migration/rdma.c
View File

@ -570,10 +570,10 @@ static int rdma_add_block(RDMAContext *rdma, void *host_addr,
* in advanced before the migration starts. This tells us where the RAM blocks
* are so that we can register them individually.
*/
static void qemu_rdma_init_one_block(void *host_addr,
static int qemu_rdma_init_one_block(const char *block_name, void *host_addr,
ram_addr_t block_offset, ram_addr_t length, void *opaque)
{
rdma_add_block(opaque, host_addr, block_offset, length);
return rdma_add_block(opaque, host_addr, block_offset, length);
}
/*