From f8d50682cd1245f6f5ce4c846ca6f1bdc11255a6 Mon Sep 17 00:00:00 2001 From: Dave Barach Date: Tue, 14 May 2019 18:01:44 -0400 Subject: init / exit function ordering The vlib init function subsystem now supports a mix of procedural and formally-specified ordering constraints. We should eliminate procedural knowledge wherever possible. The following schemes are *roughly* equivalent: static clib_error_t *init_runs_first (vlib_main_t *vm) { clib_error_t *error; ... do some stuff... if ((error = vlib_call_init_function (init_runs_next))) return error; ... } VLIB_INIT_FUNCTION (init_runs_first); and static clib_error_t *init_runs_first (vlib_main_t *vm) { ... do some stuff... } VLIB_INIT_FUNCTION (init_runs_first) = { .runs_before = VLIB_INITS("init_runs_next"), }; The first form will [most likely] call "init_runs_next" on the spot. The second form means that "init_runs_first" runs before "init_runs_next," possibly much earlier in the sequence. Please DO NOT construct sets of init functions where A before B actually means A *right before* B. It's not necessary - simply combine A and B - and it leads to hugely annoying debugging exercises when trying to switch from ad-hoc procedural ordering constraints to formal ordering constraints. Change-Id: I5e4353503bf43b4acb11a45fb33c79a5ade8426c Signed-off-by: Dave Barach --- src/vlib/vmbus/vmbus.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'src/vlib/vmbus') diff --git a/src/vlib/vmbus/vmbus.c b/src/vlib/vmbus/vmbus.c index ea395ece6a8..eadf5f176d6 100644 --- a/src/vlib/vmbus/vmbus.c +++ b/src/vlib/vmbus/vmbus.c @@ -30,11 +30,10 @@ vlib_vmbus_addr_t * __attribute__ ((weak)) vlib_vmbus_get_all_dev_addrs () return NULL; } - clib_error_t * vmbus_bus_init (vlib_main_t * vm) { - return vlib_call_init_function (vm, vmbus_bus_init); + return 0; } VLIB_INIT_FUNCTION (vmbus_bus_init); -- cgit 1.2.3-korg