From c9e3099dae058e513e74091141f71dfd9e67aefa Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Thu, 21 Sep 2023 16:15:14 +0200 Subject: [PATCH 012/198] drm/amd/display: Add a warning if the FPU is used outside from task context. Add a warning if the FPU is used from any context other than task context. This is only precaution since the code is not able to be used from softirq while the API allows it on x86 for instance. Link: https://lore.kernel.org/r/20230921141516.520471-4-bigeasy@linutronix.de Signed-off-by: Sebastian Andrzej Siewior --- drivers/gpu/drm/amd/display/amdgpu_dm/dc_fpu.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/dc_fpu.c b/drivers/gpu/drm/amd/display/amdgpu_dm/dc_fpu.c index 8bd5926b47e0..4ae4720535a5 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/dc_fpu.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/dc_fpu.c @@ -84,6 +84,7 @@ void dc_fpu_begin(const char *function_name, const int line) { int depth; + WARN_ON_ONCE(!in_task()); preempt_disable(); depth = __this_cpu_inc_return(fpu_recursion_depth); -- 2.44.0