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| author | Stefan Hajnoczi <stefanha@redhat.com> | 2023-05-01 13:34:43 -0400 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2023-05-10 14:16:54 +0200 |
| commit | 58a2e3f5c37be02dac3086b81bdda9414b931edf (patch) | |
| tree | c7d848ec1ee79f0b784decade1800867e67f0315 /meson.build | |
| parent | e19b157f3c66c44e3b89cb50a2030f0187b968e9 (diff) | |
| download | qemu-58a2e3f5c37be02dac3086b81bdda9414b931edf.zip qemu-58a2e3f5c37be02dac3086b81bdda9414b931edf.tar.gz qemu-58a2e3f5c37be02dac3086b81bdda9414b931edf.tar.bz2 | |
block: compile out assert_bdrv_graph_readable() by default
reader_count() is a performance bottleneck because the global
aio_context_list_lock mutex causes thread contention. Put this debugging
assertion behind a new ./configure --enable-debug-graph-lock option and
disable it by default.
The --enable-debug-graph-lock option is also enabled by the more general
--enable-debug option.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20230501173443.153062-1-stefanha@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'meson.build')
| -rw-r--r-- | meson.build | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/meson.build b/meson.build index c56e0fe..6465554 100644 --- a/meson.build +++ b/meson.build @@ -1963,6 +1963,7 @@ if get_option('debug_stack_usage') and have_coroutine_pool have_coroutine_pool = false endif config_host_data.set10('CONFIG_COROUTINE_POOL', have_coroutine_pool) +config_host_data.set('CONFIG_DEBUG_GRAPH_LOCK', get_option('debug_graph_lock')) config_host_data.set('CONFIG_DEBUG_MUTEX', get_option('debug_mutex')) config_host_data.set('CONFIG_DEBUG_STACK_USAGE', get_option('debug_stack_usage')) config_host_data.set('CONFIG_GPROF', get_option('gprof')) @@ -3841,6 +3842,7 @@ summary_info += {'PIE': get_option('b_pie')} summary_info += {'static build': config_host.has_key('CONFIG_STATIC')} summary_info += {'malloc trim support': has_malloc_trim} summary_info += {'membarrier': have_membarrier} +summary_info += {'debug graph lock': get_option('debug_graph_lock')} summary_info += {'debug stack usage': get_option('debug_stack_usage')} summary_info += {'mutex debugging': get_option('debug_mutex')} summary_info += {'memory allocator': get_option('malloc')} |