From: Sean Paul Date: Wed, 19 Sep 2018 18:33:50 +0000 (-0400) Subject: drm/msm: dpu: Don't store/deref pointers in trace ringbuffer X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=f65f035f197175ebebf002bcaad8974582c372f2;p=openwrt%2Fstaging%2Fblogic.git drm/msm: dpu: Don't store/deref pointers in trace ringbuffer TP_printk is not synchronous, so storing pointers and then later dereferencing them is a Bad Idea. This patch stores everything locally to avoid display stomped memory. Reviewed-by: Abhinav Kumar [seanpaul fixed up commit msg typo on apply] Signed-off-by: Sean Paul Signed-off-by: Rob Clark --- diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_trace.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_trace.h index ae6b0c51ba52..e12c4cefb742 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_trace.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_trace.h @@ -686,37 +686,41 @@ TRACE_EVENT(dpu_crtc_setup_mixer, TP_STRUCT__entry( __field( uint32_t, crtc_id ) __field( uint32_t, plane_id ) - __field( struct drm_plane_state*,state ) - __field( struct dpu_plane_state*,pstate ) + __field( uint32_t, fb_id ) + __field_struct( struct drm_rect, src_rect ) + __field_struct( struct drm_rect, dst_rect ) __field( uint32_t, stage_idx ) + __field( enum dpu_stage, stage ) __field( enum dpu_sspp, sspp ) + __field( uint32_t, multirect_idx ) + __field( uint32_t, multirect_mode ) __field( uint32_t, pixel_format ) __field( uint64_t, modifier ) ), TP_fast_assign( __entry->crtc_id = crtc_id; __entry->plane_id = plane_id; - __entry->state = state; - __entry->pstate = pstate; + __entry->fb_id = state ? state->fb->base.id : 0; + __entry->src_rect = drm_plane_state_src(state); + __entry->dst_rect = drm_plane_state_dest(state); __entry->stage_idx = stage_idx; + __entry->stage = pstate->stage; __entry->sspp = sspp; + __entry->multirect_idx = pstate->multirect_index; + __entry->multirect_mode = pstate->multirect_mode; __entry->pixel_format = pixel_format; __entry->modifier = modifier; ), - TP_printk("crtc_id:%u plane_id:%u fb_id:%u src:{%ux%u+%ux%u} " - "dst:{%ux%u+%ux%u} stage_idx:%u stage:%d, sspp:%d " + TP_printk("crtc_id:%u plane_id:%u fb_id:%u src:" DRM_RECT_FP_FMT + " dst:" DRM_RECT_FMT " stage_idx:%u stage:%d, sspp:%d " "multirect_index:%d multirect_mode:%u pix_format:%u " "modifier:%llu", - __entry->crtc_id, __entry->plane_id, - __entry->state->fb ? __entry->state->fb->base.id : -1, - __entry->state->src_w >> 16, __entry->state->src_h >> 16, - __entry->state->src_x >> 16, __entry->state->src_y >> 16, - __entry->state->crtc_w, __entry->state->crtc_h, - __entry->state->crtc_x, __entry->state->crtc_y, - __entry->stage_idx, __entry->pstate->stage, __entry->sspp, - __entry->pstate->multirect_index, - __entry->pstate->multirect_mode, __entry->pixel_format, - __entry->modifier) + __entry->crtc_id, __entry->plane_id, __entry->fb_id, + DRM_RECT_FP_ARG(&__entry->src_rect), + DRM_RECT_ARG(&__entry->dst_rect), + __entry->stage_idx, __entry->stage, __entry->sspp, + __entry->multirect_idx, __entry->multirect_mode, + __entry->pixel_format, __entry->modifier) ); TRACE_EVENT(dpu_crtc_setup_lm_bounds, @@ -725,15 +729,15 @@ TRACE_EVENT(dpu_crtc_setup_lm_bounds, TP_STRUCT__entry( __field( uint32_t, drm_id ) __field( int, mixer ) - __field( struct drm_rect *, bounds ) + __field_struct( struct drm_rect, bounds ) ), TP_fast_assign( __entry->drm_id = drm_id; __entry->mixer = mixer; - __entry->bounds = bounds; + __entry->bounds = *bounds; ), TP_printk("id:%u mixer:%d bounds:" DRM_RECT_FMT, __entry->drm_id, - __entry->mixer, DRM_RECT_ARG(__entry->bounds)) + __entry->mixer, DRM_RECT_ARG(&__entry->bounds)) ); TRACE_EVENT(dpu_crtc_vblank_enable, @@ -744,21 +748,25 @@ TRACE_EVENT(dpu_crtc_vblank_enable, __field( uint32_t, drm_id ) __field( uint32_t, enc_id ) __field( bool, enable ) - __field( struct dpu_crtc *, crtc ) + __field( bool, enabled ) + __field( bool, suspend ) + __field( bool, vblank_requested ) ), TP_fast_assign( __entry->drm_id = drm_id; __entry->enc_id = enc_id; __entry->enable = enable; - __entry->crtc = crtc; + __entry->enabled = crtc->enabled; + __entry->suspend = crtc->suspend; + __entry->vblank_requested = crtc->vblank_requested; ), TP_printk("id:%u encoder:%u enable:%s state{enabled:%s suspend:%s " "vblank_req:%s}", __entry->drm_id, __entry->enc_id, __entry->enable ? "true" : "false", - __entry->crtc->enabled ? "true" : "false", - __entry->crtc->suspend ? "true" : "false", - __entry->crtc->vblank_requested ? "true" : "false") + __entry->enabled ? "true" : "false", + __entry->suspend ? "true" : "false", + __entry->vblank_requested ? "true" : "false") ); DECLARE_EVENT_CLASS(dpu_crtc_enable_template, @@ -767,18 +775,22 @@ DECLARE_EVENT_CLASS(dpu_crtc_enable_template, TP_STRUCT__entry( __field( uint32_t, drm_id ) __field( bool, enable ) - __field( struct dpu_crtc *, crtc ) + __field( bool, enabled ) + __field( bool, suspend ) + __field( bool, vblank_requested ) ), TP_fast_assign( __entry->drm_id = drm_id; __entry->enable = enable; - __entry->crtc = crtc; + __entry->enabled = crtc->enabled; + __entry->suspend = crtc->suspend; + __entry->vblank_requested = crtc->vblank_requested; ), TP_printk("id:%u enable:%s state{enabled:%s suspend:%s vblank_req:%s}", __entry->drm_id, __entry->enable ? "true" : "false", - __entry->crtc->enabled ? "true" : "false", - __entry->crtc->suspend ? "true" : "false", - __entry->crtc->vblank_requested ? "true" : "false") + __entry->enabled ? "true" : "false", + __entry->suspend ? "true" : "false", + __entry->vblank_requested ? "true" : "false") ); DEFINE_EVENT(dpu_crtc_enable_template, dpu_crtc_set_suspend, TP_PROTO(uint32_t drm_id, bool enable, struct dpu_crtc *crtc), @@ -818,24 +830,24 @@ TRACE_EVENT(dpu_plane_set_scanout, TP_ARGS(index, layout, multirect_index), TP_STRUCT__entry( __field( enum dpu_sspp, index ) - __field( struct dpu_hw_fmt_layout*, layout ) + __field_struct( struct dpu_hw_fmt_layout, layout ) __field( enum dpu_sspp_multirect_index, multirect_index) ), TP_fast_assign( __entry->index = index; - __entry->layout = layout; + __entry->layout = *layout; __entry->multirect_index = multirect_index; ), TP_printk("index:%d layout:{%ux%u @ [%u/%u, %u/%u, %u/%u, %u/%u]} " - "multirect_index:%d", __entry->index, __entry->layout->width, - __entry->layout->height, __entry->layout->plane_addr[0], - __entry->layout->plane_size[0], - __entry->layout->plane_addr[1], - __entry->layout->plane_size[1], - __entry->layout->plane_addr[2], - __entry->layout->plane_size[2], - __entry->layout->plane_addr[3], - __entry->layout->plane_size[3], __entry->multirect_index) + "multirect_index:%d", __entry->index, __entry->layout.width, + __entry->layout.height, __entry->layout.plane_addr[0], + __entry->layout.plane_size[0], + __entry->layout.plane_addr[1], + __entry->layout.plane_size[1], + __entry->layout.plane_addr[2], + __entry->layout.plane_size[2], + __entry->layout.plane_addr[3], + __entry->layout.plane_size[3], __entry->multirect_index) ); TRACE_EVENT(dpu_plane_disable, @@ -979,16 +991,16 @@ TRACE_EVENT(dpu_core_perf_update_clk, TP_PROTO(struct drm_device *dev, bool stop_req, u64 clk_rate), TP_ARGS(dev, stop_req, clk_rate), TP_STRUCT__entry( - __field( struct drm_device *, dev ) + __string( dev_name, dev->unique ) __field( bool, stop_req ) __field( u64, clk_rate ) ), TP_fast_assign( - __entry->dev = dev; + __assign_str(dev_name, dev->unique); __entry->stop_req = stop_req; __entry->clk_rate = clk_rate; ), - TP_printk("dev:%s stop_req:%s clk_rate:%llu", __entry->dev->unique, + TP_printk("dev:%s stop_req:%s clk_rate:%llu", __get_str(dev_name), __entry->stop_req ? "true" : "false", __entry->clk_rate) );