[Intel-gfx,v3,0/4] drm: Introduce struct drm_device based WARN* and use them in i915
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Message ID 20200123112809.12185-1-pankaj.laxminarayan.bharadiya@intel.com
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  • drm: Introduce struct drm_device based WARN* and use them in i915
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Laxminarayan Bharadiya, Pankaj Jan. 23, 2020, 11:28 a.m. UTC
Device specific dev_WARN and dev_WARN_ONCE macros available in kernel
include device information in the backtrace, so we know what device
the warnings originate from.

Similar to this, add new struct drm_device based drm_WARN* macros. These
macros include device information in the backtrace, so we know
what device the warnings originate from. Knowing the device specific
information in the backtrace would be helpful in development all
around.

This patch series aims to convert calls of WARN(), WARN_ON(),
WARN_ONCE() and WARN_ON_ONCE() in i915 driver to use the drm
device-specific variants automatically wherever struct device pointer
is available.

To do this, this patch series -
  - introduces new struct drm_device based WARN* macros
  - automatically converts WARN* with device specific dev_WARN*
    variants using coccinelle semantic patch scripts.

The goal is to convert all the calls of WARN* with drm_WARN* in i915,
but there are still cases where device pointer is not readily
available in some functions (or I missed them somehow) using WARN*
hence some manual churning is needed. Handle such remaining cases
separately later.

changes since v2:
  - rebase pending unmerged patches on drm-tip

changes since v1:
  - Address Jani's review comments
    - Fix typo in comment of patch 0001
    - Get rid of helper functions
    - Split patches by directory

Changes since RFC at [1]
  - Introduce drm_WARN* macros and use them as suggested by Sam and Jani
  - Get rid of extra local variables

[1] https://patchwork.freedesktop.org/series/71668/


Pankaj Bharadiya (4):
  drm/i915/display: Make WARN* drm specific where drm_device ptr is available
  drm/i915/display: Make WARN* drm specific where drm_priv ptr is available
  drm/i915/gvt: Make WARN* drm specific where drm_priv ptr is available
  drm/i915/gvt: Make WARN* drm specific where vgpu ptr is available

 drivers/gpu/drm/i915/display/icl_dsi.c        |  14 +-
 drivers/gpu/drm/i915/display/intel_atomic.c   |   6 +-
 drivers/gpu/drm/i915/display/intel_audio.c    |  19 +-
 drivers/gpu/drm/i915/display/intel_bios.c     |  10 +-
 drivers/gpu/drm/i915/display/intel_bw.c       |   3 +-
 drivers/gpu/drm/i915/display/intel_cdclk.c    |  81 ++++---
 drivers/gpu/drm/i915/display/intel_color.c    |   4 +-
 .../gpu/drm/i915/display/intel_combo_phy.c    |   2 +-
 .../gpu/drm/i915/display/intel_connector.c    |   3 +-
 drivers/gpu/drm/i915/display/intel_crt.c      |  10 +-
 drivers/gpu/drm/i915/display/intel_ddi.c      |  94 ++++----
 drivers/gpu/drm/i915/display/intel_display.c  | 218 ++++++++++--------
 .../drm/i915/display/intel_display_power.c    | 167 ++++++++------
 drivers/gpu/drm/i915/display/intel_dp.c       | 117 ++++++----
 drivers/gpu/drm/i915/display/intel_dp_mst.c   |  10 +-
 drivers/gpu/drm/i915/display/intel_dpio_phy.c |   3 +-
 drivers/gpu/drm/i915/display/intel_dpll_mgr.c |  37 +--
 drivers/gpu/drm/i915/display/intel_dsb.c      |   6 +-
 .../i915/display/intel_dsi_dcs_backlight.c    |   2 +-
 drivers/gpu/drm/i915/display/intel_dsi_vbt.c  |   5 +-
 drivers/gpu/drm/i915/display/intel_fbc.c      |  23 +-
 drivers/gpu/drm/i915/display/intel_fbdev.c    |  13 +-
 drivers/gpu/drm/i915/display/intel_gmbus.c    |   3 +-
 drivers/gpu/drm/i915/display/intel_hdcp.c     |  21 +-
 drivers/gpu/drm/i915/display/intel_hdmi.c     |  51 ++--
 drivers/gpu/drm/i915/display/intel_hotplug.c  |   7 +-
 .../gpu/drm/i915/display/intel_lpe_audio.c    |   2 +-
 drivers/gpu/drm/i915/display/intel_lvds.c     |   7 +-
 drivers/gpu/drm/i915/display/intel_opregion.c |   7 +-
 drivers/gpu/drm/i915/display/intel_overlay.c  |  12 +-
 drivers/gpu/drm/i915/display/intel_panel.c    |  19 +-
 drivers/gpu/drm/i915/display/intel_pipe_crc.c |   7 +-
 drivers/gpu/drm/i915/display/intel_psr.c      |  34 +--
 drivers/gpu/drm/i915/display/intel_sdvo.c     |  14 +-
 drivers/gpu/drm/i915/display/intel_sprite.c   |   5 +-
 drivers/gpu/drm/i915/display/intel_tc.c       |  17 +-
 drivers/gpu/drm/i915/display/intel_vdsc.c     |   2 +-
 drivers/gpu/drm/i915/display/vlv_dsi.c        |   2 +-
 drivers/gpu/drm/i915/gvt/aperture_gm.c        |   6 +-
 drivers/gpu/drm/i915/gvt/cfg_space.c          |  23 +-
 drivers/gpu/drm/i915/gvt/cmd_parser.c         |   4 +-
 drivers/gpu/drm/i915/gvt/display.c            |   6 +-
 drivers/gpu/drm/i915/gvt/dmabuf.c             |   4 +-
 drivers/gpu/drm/i915/gvt/edid.c               |  19 +-
 drivers/gpu/drm/i915/gvt/gtt.c                |  21 +-
 drivers/gpu/drm/i915/gvt/gvt.c                |   4 +-
 drivers/gpu/drm/i915/gvt/handlers.c           |  22 +-
 drivers/gpu/drm/i915/gvt/interrupt.c          |  15 +-
 drivers/gpu/drm/i915/gvt/kvmgt.c              |  10 +-
 drivers/gpu/drm/i915/gvt/mmio.c               |  30 ++-
 drivers/gpu/drm/i915/gvt/mmio_context.c       |   8 +-
 drivers/gpu/drm/i915/gvt/scheduler.c          |   6 +-
 drivers/gpu/drm/i915/gvt/vgpu.c               |   6 +-
 53 files changed, 714 insertions(+), 527 deletions(-)

Comments

Jani Nikula Jan. 25, 2020, 2:51 p.m. UTC | #1
On Thu, 23 Jan 2020, Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com> wrote:
> changes since v2:
>   - rebase pending unmerged patches on drm-tip

Alas, these conflict already... please rebase. :/

BR,
Jani.
Laxminarayan Bharadiya, Pankaj Jan. 27, 2020, 8:11 a.m. UTC | #2
On Sat, Jan 25, 2020 at 04:51:08PM +0200, Jani Nikula wrote:
> On Thu, 23 Jan 2020, Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com> wrote:
> > changes since v2:
> >   - rebase pending unmerged patches on drm-tip
> 
> Alas, these conflict already... please rebase. :/

Ahh :( ... Looks like other changes are merged before you touched this one.

Submitted V4 now.

Thanks,
Pankaj
> 
> BR,
> Jani.
> 
> -- 
> Jani Nikula, Intel Open Source Graphics Center