From ba795761857082a9bb8c4be1f28e7cdd82f039b0 Mon Sep 17 00:00:00 2001 From: "Dr. David Alan Gilbert" Date: Mon, 16 Feb 2015 16:58:05 +0000 Subject: [PATCH 1/2] unbreak dtrace tracing due to double _ in rdma names MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Reported-by: Andreas Färber Reviewed-by: Paolo Bonzini Tested-by: Andreas Färber Message-id: 1424105885-12149-1-git-send-email-dgilbert@redhat.com Signed-off-by: Stefan Hajnoczi --- 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 6bee30c6c1..17d00351b1 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), @@ -2187,8 +2186,7 @@ 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 f87b077805..9c6b15b010 100644 --- a/trace-events +++ b/trace-events @@ -1378,8 +1378,6 @@ 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" @@ -1433,6 +1431,8 @@ 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) "" From 0b7e89b103b899c21b9ab37dbf9b832db8d18108 Mon Sep 17 00:00:00 2001 From: Stefan Hajnoczi Date: Thu, 14 Aug 2014 11:39:23 +0100 Subject: [PATCH 2/2] trace: add DTrace reserved words for .d files MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit DTrace on Mac OS X fails due to trace events using 'self' as an argument name: GEN trace/generated-tracers-dtrace.h dtrace: failed to compile script trace/generated-tracers-dtrace.dtrace: line 1330: syntax error, unexpected DT_KEY_SELF, expecting ) near "self" make: *** [trace/generated-tracers-dtrace.h] Error 1 Filter argument names according to the list of DTrace .d file reserved keywords. Note that DTrace on Mac and Linux still do not work after this patch. There are additional build issues remaining. Reported-by: Henk Poley Tested-by: Henk Poley Cc: Lluís Vilanova Signed-off-by: Stefan Hajnoczi --- scripts/tracetool/format/d.py | 26 +++++++++++++++++++------- 1 file changed, 19 insertions(+), 7 deletions(-) diff --git a/scripts/tracetool/format/d.py b/scripts/tracetool/format/d.py index 46eebb128b..c77d5b7ab0 100644 --- a/scripts/tracetool/format/d.py +++ b/scripts/tracetool/format/d.py @@ -16,6 +16,19 @@ __email__ = "stefanha@linux.vnet.ibm.com" from tracetool import out +# Reserved keywords from +# https://wikis.oracle.com/display/DTrace/Types,+Operators+and+Expressions +RESERVED_WORDS = ( + 'auto', 'goto', 'sizeof', 'break', 'if', 'static', 'case', 'import', + 'string', 'char', 'inline', 'stringof', 'const', 'int', 'struct', + 'continue', 'long', 'switch', 'counter', 'offsetof', 'this', + 'default', 'probe', 'translator', 'do', 'provider', 'typedef', + 'double', 'register', 'union', 'else', 'restrict', 'unsigned', + 'enum', 'return', 'void', 'extern', 'self', 'volatile', 'float', + 'short', 'while', 'for', 'signed', 'xlate', +) + + def generate(events, backend): events = [e for e in events if "disable" not in e.properties] @@ -25,18 +38,17 @@ def generate(events, backend): 'provider qemu {') for e in events: - args = str(e.args) - - # DTrace provider syntax expects foo() for empty - # params, not foo(void) - if args == 'void': - args = '' + args = [] + for type_, name in e.args: + if name in RESERVED_WORDS: + name += '_' + args.append(type_ + ' ' + name) # Define prototype for probe arguments out('', 'probe %(name)s(%(args)s);', name=e.name, - args=args) + args=','.join(args)) out('', '};')