The kernel would like to have all stack VLA usage removed[1]. The array here is fixed (declared with a const variable) but it appears like a VLA to the compiler. Also, currently we are putting 768 bytes on the stack. So save stack space and removes the VLA build warning by making it static.
[1]: https://lkml.org/lkml/2018/3/7/621 CC: Tobin C. Harding <m...@tobin.cc> Signed-off-by: Stefan Wahren <stefan.wah...@i2se.com> --- .../vc04_services/interface/vchiq_arm/vchiq_arm.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c index 24d456b..f276437 100644 --- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c +++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c @@ -3414,13 +3414,18 @@ vchiq_release_service(VCHIQ_SERVICE_HANDLE_T handle) return ret; } +struct service_data_struct { + int fourcc; + int clientid; + int use_count; +}; + void vchiq_dump_service_use_state(VCHIQ_STATE_T *state) { VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state); + static struct service_data_struct service_data[64]; int i, j = 0; - /* Only dump 64 services */ - static const int local_max_services = 64; /* If there's more than 64 services, only dump ones with * non-zero counts */ int only_nonzero = 0; @@ -3431,11 +3436,6 @@ vchiq_dump_service_use_state(VCHIQ_STATE_T *state) int peer_count; int vc_use_count; int active_services; - struct service_data_struct { - int fourcc; - int clientid; - int use_count; - } service_data[local_max_services]; if (!arm_state) return; @@ -3446,10 +3446,10 @@ vchiq_dump_service_use_state(VCHIQ_STATE_T *state) peer_count = arm_state->peer_use_count; vc_use_count = arm_state->videocore_use_count; active_services = state->unused_service; - if (active_services > local_max_services) + if (active_services > ARRAY_SIZE(service_data)) only_nonzero = 1; - for (i = 0; (i < active_services) && (j < local_max_services); i++) { + for (i = 0; (i < active_services) && (j < ARRAY_SIZE(service_data)); i++) { VCHIQ_SERVICE_T *service_ptr = state->services[i]; if (!service_ptr) @@ -3479,7 +3479,7 @@ vchiq_dump_service_use_state(VCHIQ_STATE_T *state) vchiq_log_warning(vchiq_susp_log_level, "Too many active " "services (%d). Only dumping up to first %d services " "with non-zero use-count", active_services, - local_max_services); + ARRAY_SIZE(service_data)); for (i = 0; i < j; i++) { vchiq_log_warning(vchiq_susp_log_level, -- 2.7.4 _______________________________________________ devel mailing list de...@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
