Currently drm_atomic_print_state() internally allocates and uses a drm_info printer. Allow it to accept any drm_printer type so that the API can be leveraged even for taking drm snapshot.
Rename the drm_atomic_print_state() to drm_atomic_print_new_state() so that it reflects its functionality better.
changes in v4: - none
Reported-by: kernel test robot lkp@intel.com Signed-off-by: Abhinav Kumar abhinavk@codeaurora.org Reviewed-by: Daniel Vetter daniel.vetter@ffwll.ch --- drivers/gpu/drm/drm_atomic.c | 28 +++++++++++++++++++----- drivers/gpu/drm/drm_atomic_uapi.c | 4 +++- drivers/gpu/drm/drm_crtc_internal.h | 4 +++- drivers/gpu/drm/selftests/test-drm_framebuffer.c | 1 + 4 files changed, 30 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c index dda6005..7041a26 100644 --- a/drivers/gpu/drm/drm_atomic.c +++ b/drivers/gpu/drm/drm_atomic.c @@ -1,6 +1,7 @@ /* * Copyright (C) 2014 Red Hat * Copyright (C) 2014 Intel Corp. + * Copyright (c) 2020-2021, The Linux Foundation. All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), @@ -1573,9 +1574,20 @@ int __drm_atomic_helper_set_config(struct drm_mode_set *set, } EXPORT_SYMBOL(__drm_atomic_helper_set_config);
-void drm_atomic_print_state(const struct drm_atomic_state *state) +/** + * drm_atomic_print_new_state - prints drm atomic state + * @state: atomic configuration to check + * @p: drm printer + * + * This functions prints the drm atomic state snapshot using the drm printer + * which is passed to it. This snapshot can be used for debugging purposes. + * + * Note that this function looks into the new state objects and hence its not + * safe to be used after the call to drm_atomic_helper_commit_hw_done(). + */ +void drm_atomic_print_new_state(const struct drm_atomic_state *state, + struct drm_printer *p) { - struct drm_printer p = drm_info_printer(state->dev->dev); struct drm_plane *plane; struct drm_plane_state *plane_state; struct drm_crtc *crtc; @@ -1584,17 +1596,23 @@ void drm_atomic_print_state(const struct drm_atomic_state *state) struct drm_connector_state *connector_state; int i;
+ if (!p) { + DRM_ERROR("invalid drm printer\n"); + return; + } + DRM_DEBUG_ATOMIC("checking %p\n", state);
for_each_new_plane_in_state(state, plane, plane_state, i) - drm_atomic_plane_print_state(&p, plane_state); + drm_atomic_plane_print_state(p, plane_state);
for_each_new_crtc_in_state(state, crtc, crtc_state, i) - drm_atomic_crtc_print_state(&p, crtc_state); + drm_atomic_crtc_print_state(p, crtc_state);
for_each_new_connector_in_state(state, connector, connector_state, i) - drm_atomic_connector_print_state(&p, connector_state); + drm_atomic_connector_print_state(p, connector_state); } +EXPORT_SYMBOL(drm_atomic_print_new_state);
static void __drm_state_dump(struct drm_device *dev, struct drm_printer *p, bool take_locks) diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c index 268bb69..c340a67 100644 --- a/drivers/gpu/drm/drm_atomic_uapi.c +++ b/drivers/gpu/drm/drm_atomic_uapi.c @@ -2,6 +2,7 @@ * Copyright (C) 2014 Red Hat * Copyright (C) 2014 Intel Corp. * Copyright (C) 2018 Intel Corp. + * Copyright (c) 2020, The Linux Foundation. All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), @@ -1321,6 +1322,7 @@ int drm_mode_atomic_ioctl(struct drm_device *dev, struct drm_out_fence_state *fence_state; int ret = 0; unsigned int i, j, num_fences; + struct drm_printer p = drm_info_printer(dev->dev);
/* disallow for drivers not supporting atomic: */ if (!drm_core_check_feature(dev, DRIVER_ATOMIC)) @@ -1453,7 +1455,7 @@ int drm_mode_atomic_ioctl(struct drm_device *dev, ret = drm_atomic_nonblocking_commit(state); } else { if (drm_debug_enabled(DRM_UT_STATE)) - drm_atomic_print_state(state); + drm_atomic_print_new_state(state, &p);
ret = drm_atomic_commit(state); } diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h index 54d4cf1..1ca51ad 100644 --- a/drivers/gpu/drm/drm_crtc_internal.h +++ b/drivers/gpu/drm/drm_crtc_internal.h @@ -5,6 +5,7 @@ * Jesse Barnes jesse.barnes@intel.com * Copyright © 2014 Intel Corporation * Daniel Vetter daniel.vetter@ffwll.ch + * Copyright (c) 2020, The Linux Foundation. All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), @@ -236,7 +237,8 @@ int __drm_atomic_helper_disable_plane(struct drm_plane *plane, int __drm_atomic_helper_set_config(struct drm_mode_set *set, struct drm_atomic_state *state);
-void drm_atomic_print_state(const struct drm_atomic_state *state); +void drm_atomic_print_new_state(const struct drm_atomic_state *state, + struct drm_printer *p);
/* drm_atomic_uapi.c */ int drm_atomic_connector_commit_dpms(struct drm_atomic_state *state, diff --git a/drivers/gpu/drm/selftests/test-drm_framebuffer.c b/drivers/gpu/drm/selftests/test-drm_framebuffer.c index 789f227..61b44d3 100644 --- a/drivers/gpu/drm/selftests/test-drm_framebuffer.c +++ b/drivers/gpu/drm/selftests/test-drm_framebuffer.c @@ -8,6 +8,7 @@ #include <drm/drm_device.h> #include <drm/drm_mode.h> #include <drm/drm_fourcc.h> +#include <drm/drm_print.h>
#include "../drm_crtc_internal.h"