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Date:   Thu, 14 Jul 2022 12:01:41 +0200
From:   Mauro Carvalho Chehab <mauro.chehab@linux.intel.com>
To:     Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc:     Mauro Carvalho Chehab <mchehab@kernel.org>,
        Thomas =?UTF-8?B?SGVsbHN0?= =?UTF-8?B?csO2bQ==?= 
        <thomas.hellstrom@linux.intel.com>,
        Michael Cheng <michael.cheng@intel.com>,
        Alan Previn <alan.previn.teres.alexis@intel.com>,
        David Airlie <airlied@linux.ie>,
        Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
        Lucas De Marchi <lucas.demarchi@intel.com>,
        linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
        Chris Wilson <chris@chris-wilson.co.uk>,
        Matthew Auld <matthew.auld@intel.com>,
        =?UTF-8?B?TWljaGHFgg==?= Winiarski <michal.winiarski@intel.com>,
        Tejas Upadhyay <tejaskumarx.surendrakumar.upadhyay@intel.com>,
        intel-gfx@lists.freedesktop.org, Nirmoy Das <nirmoy.das@intel.com>
Subject: Re: [Intel-gfx] [PATCH v2 06/39] drm/i915: gt: fix some Kernel-doc
 issues
Message-ID: <20220714120141.18b5e69d@maurocar-mobl2>
In-Reply-To: <Ys9CMLm2vgwJmi3+@intel.com>
References: <cover.1657699522.git.mchehab@kernel.org>
        <3cb8ebff378fc0634e992eba68176ed30842572a.1657699522.git.mchehab@kernel.org>
        <Ys9CMLm2vgwJmi3+@intel.com>
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On Wed, 13 Jul 2022 18:07:44 -0400
Rodrigo Vivi <rodrigo.vivi@intel.com> wrote:

> On Wed, Jul 13, 2022 at 09:11:54AM +0100, Mauro Carvalho Chehab wrote:
> > There are several trivial warnings there, due to trivial things:
> > 	- lack of function name at the kerneldoc markup;
> > 	- undocumented structs with kernel-doc markups;
> > 	- wrong parameter syntax.
> > 
> >     Fix such warnings:
> > 
> > 	drivers/gpu/drm/i915/gt/intel_context.h:107: warning: Function parameter or member 'ce' not described in 'intel_context_lock_pinned'
> > 	drivers/gpu/drm/i915/gt/intel_context.h:122: warning: Function parameter or member 'ce' not described in 'intel_context_is_pinned'
> > 	drivers/gpu/drm/i915/gt/intel_context.h:141: warning: Function parameter or member 'ce' not described in 'intel_context_unlock_pinned'
> > 	drivers/gpu/drm/i915/gt/intel_gtt.h:510: warning: Function parameter or member 'vm' not described in 'i915_vm_resv_put'
> > 	drivers/gpu/drm/i915/gt/intel_gtt.h:510: warning: Excess function parameter 'resv' description in 'i915_vm_resv_put'
> > 	drivers/gpu/drm/i915/gt/intel_gtt.h:615: warning: Function parameter or member 'i915' not described in 'i915_ggtt_mark_pte_lost'
> > 	drivers/gpu/drm/i915/gt/intel_gtt.h:615: warning: Function parameter or member 'val' not described in 'i915_ggtt_mark_pte_lost'
> > 	drivers/gpu/drm/i915/gt/intel_rps.c:2343: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
> > 	 * Tells the intel_ips driver that the i915 driver is now loaded, if
> > 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:28: warning: Function parameter or member 'size' not described in '__guc_capture_bufstate'
> > 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:28: warning: Function parameter or member 'data' not described in '__guc_capture_bufstate'
> > 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:28: warning: Function parameter or member 'rd' not described in '__guc_capture_bufstate'
> > 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:28: warning: Function parameter or member 'wr' not described in '__guc_capture_bufstate'
> > 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:60: warning: Function parameter or member 'link' not described in '__guc_capture_parsed_output'
> > 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:60: warning: Function parameter or member 'is_partial' not described in '__guc_capture_parsed_output'
> > 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:60: warning: Function parameter or member 'eng_class' not described in '__guc_capture_parsed_output'
> > 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:60: warning: Function parameter or member 'eng_inst' not described in '__guc_capture_parsed_output'
> > 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:60: warning: Function parameter or member 'guc_id' not described in '__guc_capture_parsed_output'
> > 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:60: warning: Function parameter or member 'lrca' not described in '__guc_capture_parsed_output'
> > 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:60: warning: Function parameter or member 'reginfo' not described in '__guc_capture_parsed_output'
> > 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:63: warning: wrong kernel-doc identifier on line:
> > 	 * struct guc_debug_capture_list_header / struct guc_debug_capture_list
> > 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:81: warning: wrong kernel-doc identifier on line:
> > 	 * struct __guc_mmio_reg_descr / struct __guc_mmio_reg_descr_group
> > 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:106: warning: wrong kernel-doc identifier on line:
> > 	 * struct guc_state_capture_header_t / struct guc_state_capture_t /
> > 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:164: warning: Function parameter or member 'is_valid' not described in '__guc_capture_ads_cache'
> > 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:164: warning: Function parameter or member 'ptr' not described in '__guc_capture_ads_cache'
> > 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:164: warning: Function parameter or member 'size' not described in '__guc_capture_ads_cache'
> > 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:164: warning: Function parameter or member 'status' not described in '__guc_capture_ads_cache'
> > 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:217: warning: Function parameter or member 'ads_null_cache' not described in 'intel_guc_state_capture'
> > 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:217: warning: Function parameter or member 'max_mmio_per_node' not described in 'intel_guc_state_capture'
> > 	drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h:401: warning: Function parameter or member 'marker' not described in 'guc_log_buffer_state'
> > 	drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h:401: warning: Function parameter or member 'read_ptr' not described in 'guc_log_buffer_state'
> > 	drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h:401: warning: Function parameter or member 'write_ptr' not described in 'guc_log_buffer_state'
> > 	drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h:401: warning: Function parameter or member 'size' not described in 'guc_log_buffer_state'
> > 	drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h:401: warning: Function parameter or member 'sampled_write_ptr' not described in 'guc_log_buffer_state'
> > 	drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h:401: warning: Function parameter or member 'wrap_offset' not described in 'guc_log_buffer_state'
> > 	drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h:401: warning: Function parameter or member 'flush_to_file' not described in 'guc_log_buffer_state'
> > 	drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h:401: warning: Function parameter or member 'buffer_full_cnt' not described in 'guc_log_buffer_state'
> > 	drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h:401: warning: Function parameter or member 'reserved' not described in 'guc_log_buffer_state'
> > 	drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h:401: warning: Function parameter or member 'flags' not described in 'guc_log_buffer_state'
> > 	drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h:401: warning: Function parameter or member 'version' not described in 'guc_log_buffer_state'
> > 
> > Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
> > ---
> > 
> > To avoid mailbombing on a large number of people, only mailing lists were C/C on the cover.
> > See [PATCH v2 00/39] at: https://lore.kernel.org/all/cover.1657699522.git.mchehab@kernel.org/
> > 
> >  drivers/gpu/drm/i915/gt/intel_context.h       |  6 +++---
> >  drivers/gpu/drm/i915/gt/intel_engine_cs.c     |  4 ++--
> >  drivers/gpu/drm/i915/gt/intel_gtt.h           |  6 +++---
> >  drivers/gpu/drm/i915/gt/intel_rps.c           |  4 ++--
> >  drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h | 14 +++++++-------
> >  drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h   |  2 +-
> >  6 files changed, 18 insertions(+), 18 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/i915/gt/intel_context.h b/drivers/gpu/drm/i915/gt/intel_context.h
> > index 8e2d70630c49..91c092d5deae 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_context.h
> > +++ b/drivers/gpu/drm/i915/gt/intel_context.h
> > @@ -96,7 +96,7 @@ void intel_context_bind_parent_child(struct intel_context *parent,
> >  
> >  /**
> >   * intel_context_lock_pinned - Stablises the 'pinned' status of the HW context
> > - * @ce - the context
> > + * @ce: the context
> >   *
> >   * Acquire a lock on the pinned status of the HW context, such that the context
> >   * can neither be bound to the GPU or unbound whilst the lock is held, i.e.
> > @@ -110,7 +110,7 @@ static inline int intel_context_lock_pinned(struct intel_context *ce)
> >  
> >  /**
> >   * intel_context_is_pinned - Reports the 'pinned' status
> > - * @ce - the context
> > + * @ce: the context
> >   *
> >   * While in use by the GPU, the context, along with its ring and page
> >   * tables is pinned into memory and the GTT.
> > @@ -132,7 +132,7 @@ static inline void intel_context_cancel_request(struct intel_context *ce,
> >  
> >  /**
> >   * intel_context_unlock_pinned - Releases the earlier locking of 'pinned' status
> > - * @ce - the context
> > + * @ce: the context
> >   *
> >   * Releases the lock earlier acquired by intel_context_unlock_pinned().
> >   */
> > diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> > index 37fa813af766..da225f5db2a4 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> > +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> > @@ -1197,7 +1197,7 @@ create_kernel_context(struct intel_engine_cs *engine)
> >  }
> >  
> >  /**
> > - * intel_engines_init_common - initialize cengine state which might require hw access
> > + * engine_init_common - initialize cengine state which might require hw access
> >   * @engine: Engine to initialize.
> >   *
> >   * Initializes @engine@ structure members shared between legacy and execlists
> > @@ -1278,7 +1278,7 @@ int intel_engines_init(struct intel_gt *gt)
> >  }
> >  
> >  /**
> > - * intel_engines_cleanup_common - cleans up the engine state created by
> > + * intel_engine_cleanup_common - cleans up the engine state created by
> >   *                                the common initiailizers.
> >   * @engine: Engine to cleanup.
> >   *
> > diff --git a/drivers/gpu/drm/i915/gt/intel_gtt.h b/drivers/gpu/drm/i915/gt/intel_gtt.h
> > index e639434e97fd..fca8eedee1d8 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_gtt.h
> > +++ b/drivers/gpu/drm/i915/gt/intel_gtt.h
> > @@ -503,7 +503,7 @@ static inline void i915_vm_put(struct i915_address_space *vm)
> >  
> >  /**
> >   * i915_vm_resv_put - Release a reference on the vm's reservation lock
> > - * @resv: Pointer to a reservation lock obtained from i915_vm_resv_get()
> > + * @vm: The vm whose reservation lock was obtained from i915_vm_resv_get()
> >   */
> >  static inline void i915_vm_resv_put(struct i915_address_space *vm)
> >  {
> > @@ -604,8 +604,8 @@ void i915_ggtt_resume(struct i915_ggtt *ggtt);
> >  
> >  /**
> >   * i915_ggtt_mark_pte_lost - Mark ggtt ptes as lost or clear such a marking
> > - * @i915 The device private.
> > - * @val whether the ptes should be marked as lost.
> > + * @i915: The device private.
> > + * @val: whether the ptes should be marked as lost.
> >   *
> >   * In some cases pte content is retained across suspend, but typically lost
> >   * across hibernate. Typically they should be marked as lost on
> > diff --git a/drivers/gpu/drm/i915/gt/intel_rps.c b/drivers/gpu/drm/i915/gt/intel_rps.c
> > index fb3f57ee450b..8aefc427e06e 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_rps.c
> > +++ b/drivers/gpu/drm/i915/gt/intel_rps.c
> > @@ -2339,8 +2339,8 @@ bool rps_read_mask_mmio(struct intel_rps *rps,
> >  static struct drm_i915_private __rcu *ips_mchdev;
> >  
> >  /**
> > - * Tells the intel_ips driver that the i915 driver is now loaded, if
> > - * IPS got loaded first.
> > + * ips_ping_for_i915_load - Tells the intel_ips driver that the i915 driver
> > + *	 is now loaded, if IPS got loaded first.
> >   *
> >   * This awkward dance is so that neither module has to depend on the
> >   * other in order for IPS to do the appropriate communication of
> > diff --git a/drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h b/drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h
> > index 3624abfd22d1..58f93226b1c1 100644
> > --- a/drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h
> > +++ b/drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h
> > @@ -12,7 +12,7 @@
> >  struct intel_guc;
> >  struct file;
> >  
> > -/**
> > +/*
> >   * struct __guc_capture_bufstate
> >   *
> >   * Book-keeping structure used to track read and write pointers
> > @@ -26,7 +26,7 @@ struct __guc_capture_bufstate {
> >  	u32 wr;
> >  };
> >  
> > -/**
> > +/*
> >   * struct __guc_capture_parsed_output - extracted error capture node
> >   *
> >   * A single unit of extracted error-capture output data grouped together
> > @@ -58,7 +58,7 @@ struct __guc_capture_parsed_output {
> >  #define GCAP_PARSED_REGLIST_INDEX_ENGINST  BIT(GUC_CAPTURE_LIST_TYPE_ENGINE_INSTANCE)
> >  };
> >  
> > -/**
> > +/*
> >   * struct guc_debug_capture_list_header / struct guc_debug_capture_list
> >   *
> >   * As part of ADS registration, these header structures (followed by
> > @@ -76,7 +76,7 @@ struct guc_debug_capture_list {
> >  	struct guc_mmio_reg regs[0];
> >  } __packed;
> >  
> > -/**
> > +/*
> >   * struct __guc_mmio_reg_descr / struct __guc_mmio_reg_descr_group
> >   *
> >   * intel_guc_capture module uses these structures to maintain static
> > @@ -101,7 +101,7 @@ struct __guc_mmio_reg_descr_group {
> >  	struct __guc_mmio_reg_descr *extlist; /* only used for steered registers */
> >  };
> >  
> > -/**
> > +/*
> >   * struct guc_state_capture_header_t / struct guc_state_capture_t /
> >   * guc_state_capture_group_header_t / guc_state_capture_group_t
> >   *
> > @@ -148,7 +148,7 @@ struct guc_state_capture_group_t {
> >  	struct guc_state_capture_t capture_entries[0];
> >  } __packed;
> >  
> > -/**
> > +/*
> >   * struct __guc_capture_ads_cache  
> 
> and many more here... :/
> Hopefully this great work on the docs will make these ugly
> "exported" "__" prefixes visible and we will fix them 

Yeah, while I can see why __function would be ok on some cases
(like for lock/unlock variants and on some special macros like the ones
that use THIS_MODULE), I can't see any reason why struct/enum/union 
would ever need to have __ prefixes on it ;-)

> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

Thanks!

Regards,
Mauro