[Qemu-devel] [PATCH 1/1] unbreak dtrace tracing due to double _ in rdma names

["Dr. David Alan Gilbert (git)" <dgilbert@redhat.com>]

From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>

It looks like the dtrace trace code gets upset if you have trace names
with __ in, which the migration/rdma.c code does.

Rename the functions and the associated traces.

Fixes: 733252deb8b7d37beacda5976c2769e18642b2fa

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reported-by: Andreas Färber <afaerber@suse.de>
---
 migration/rdma.c | 24 +++++++++++-------------
 trace-events     |  4 ++--
 2 files changed, 13 insertions(+), 15 deletions(-)

diff --git a/migration/rdma.c b/migration/rdma.c
index fc351ea..e7d77f6 100644
--- a/migration/rdma.c
+++ b/migration/rdma.c
@@ -510,7 +510,7 @@ static inline uint8_t *ram_chunk_end(const RDMALocalBlock *rdma_ram_block,
     return result;
 }
 
-static int __qemu_rdma_add_block(RDMAContext *rdma, void *host_addr,
+static int rdma_add_block(RDMAContext *rdma, void *host_addr,
                          ram_addr_t block_offset, uint64_t length)
 {
     RDMALocalBlocks *local = &rdma->local_ram_blocks;
@@ -551,13 +551,12 @@ static int __qemu_rdma_add_block(RDMAContext *rdma, void *host_addr,
 
     g_hash_table_insert(rdma->blockmap, (void *) block_offset, block);
 
-    trace___qemu_rdma_add_block(local->nb_blocks,
-                           (uint64_t) block->local_host_addr, block->offset,
-                           block->length,
-                           (uint64_t) (block->local_host_addr + block->length),
-                           BITS_TO_LONGS(block->nb_chunks) *
-                               sizeof(unsigned long) * 8,
-                           block->nb_chunks);
+    trace_rdma_add_block(local->nb_blocks, (uint64_t) block->local_host_addr,
+                         block->offset, block->length,
+                         (uint64_t) (block->local_host_addr + block->length),
+                         BITS_TO_LONGS(block->nb_chunks) *
+                             sizeof(unsigned long) * 8,
+                         block->nb_chunks);
 
     local->nb_blocks++;
 
@@ -572,7 +571,7 @@ static int __qemu_rdma_add_block(RDMAContext *rdma, void *host_addr,
 static void qemu_rdma_init_one_block(void *host_addr,
     ram_addr_t block_offset, ram_addr_t length, void *opaque)
 {
-    __qemu_rdma_add_block(opaque, host_addr, block_offset, length);
+    rdma_add_block(opaque, host_addr, block_offset, length);
 }
 
 /*
@@ -595,7 +594,7 @@ static int qemu_rdma_init_ram_blocks(RDMAContext *rdma)
     return 0;
 }
 
-static int __qemu_rdma_delete_block(RDMAContext *rdma, ram_addr_t block_offset)
+static int rdma_delete_block(RDMAContext *rdma, ram_addr_t block_offset)
 {
     RDMALocalBlocks *local = &rdma->local_ram_blocks;
     RDMALocalBlock *block = g_hash_table_lookup(rdma->blockmap,
@@ -657,7 +656,7 @@ static int __qemu_rdma_delete_block(RDMAContext *rdma, ram_addr_t block_offset)
         local->block = NULL;
     }
 
-    trace___qemu_rdma_delete_block(local->nb_blocks,
+    trace_rdma_delete_block(local->nb_blocks,
                            (uint64_t)block->local_host_addr,
                            block->offset, block->length,
                            (uint64_t)(block->local_host_addr + block->length),
@@ -2190,8 +2189,7 @@ static void qemu_rdma_cleanup(RDMAContext *rdma)
 
     if (rdma->local_ram_blocks.block) {
         while (rdma->local_ram_blocks.nb_blocks) {
-            __qemu_rdma_delete_block(rdma,
-                    rdma->local_ram_blocks.block->offset);
+            rdma_delete_block(rdma, rdma->local_ram_blocks.block->offset);
         }
     }
 
diff --git a/trace-events b/trace-events
index 57f357f..378505f 100644
--- a/trace-events
+++ b/trace-events
@@ -1337,8 +1337,6 @@ migrate_pending(uint64_t size, uint64_t max) "pending size %" PRIu64 " max %" PR
 migrate_transferred(uint64_t tranferred, uint64_t time_spent, double bandwidth, uint64_t size) "transferred %" PRIu64 " time_spent %" PRIu64 " bandwidth %g max_size %" PRId64
 
 # migration/rdma.c
-__qemu_rdma_add_block(int block, uint64_t addr, uint64_t offset, uint64_t len, uint64_t end, uint64_t bits, int chunks) "Added Block: %d, addr: %" PRIu64 ", offset: %" PRIu64 " length: %" PRIu64 " end: %" PRIu64 " bits %" PRIu64 " chunks %d"
-__qemu_rdma_delete_block(int block, uint64_t addr, uint64_t offset, uint64_t len, uint64_t end, uint64_t bits, int chunks) "Deleted Block: %d, addr: %" PRIu64 ", offset: %" PRIu64 " length: %" PRIu64 " end: %" PRIu64 " bits %" PRIu64 " chunks %d"
 qemu_dma_accept_incoming_migration(void) ""
 qemu_dma_accept_incoming_migration_accepted(void) ""
 qemu_rdma_accept_pin_state(bool pin) "%d"
@@ -1392,6 +1390,8 @@ qemu_rdma_write_one_recvregres(int mykey, int theirkey, uint64_t chunk) "Receive
 qemu_rdma_write_one_sendreg(uint64_t chunk, int len, int index, int64_t offset) "Sending registration request chunk %" PRIu64 " for %d bytes, index: %d, offset: %" PRId64
 qemu_rdma_write_one_top(uint64_t chunks, uint64_t size) "Writing %" PRIu64 " chunks, (%" PRIu64 " MB)"
 qemu_rdma_write_one_zero(uint64_t chunk, int len, int index, int64_t offset) "Entire chunk is zero, sending compress: %" PRIu64 " for %d bytes, index: %d, offset: %" PRId64
+rdma_add_block(int block, uint64_t addr, uint64_t offset, uint64_t len, uint64_t end, uint64_t bits, int chunks) "Added Block: %d, addr: %" PRIu64 ", offset: %" PRIu64 " length: %" PRIu64 " end: %" PRIu64 " bits %" PRIu64 " chunks %d"
+rdma_delete_block(int block, uint64_t addr, uint64_t offset, uint64_t len, uint64_t end, uint64_t bits, int chunks) "Deleted Block: %d, addr: %" PRIu64 ", offset: %" PRIu64 " length: %" PRIu64 " end: %" PRIu64 " bits %" PRIu64 " chunks %d"
 rdma_start_incoming_migration(void) ""
 rdma_start_incoming_migration_after_dest_init(void) ""
 rdma_start_incoming_migration_after_rdma_listen(void) ""
-- 
2.1.0