diff mbox series

[09/14] drm/i915/guc/slpc: Add debugfs for SLPC info

Message ID 20210721161120.24610-10-vinay.belgaumkar@intel.com (mailing list archive)
State New, archived
Headers show
Series drm/i915/guc: Enable GuC based power management features | expand

Commit Message

Vinay Belgaumkar July 21, 2021, 4:11 p.m. UTC 
This prints out relevant SLPC info from the SLPC shared structure.

We will send a h2g message which forces SLPC to update the
shared data structure with latest information before reading it.

v2: Address review comments (Michal W)

Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Signed-off-by: Sundaresan Sujaritha <sujaritha.sundaresan@intel.com>
---
 .../gpu/drm/i915/gt/uc/intel_guc_debugfs.c    | 23 +++++++++++
 drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c   | 40 +++++++++++++++++++
 drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h   |  4 +-
 3 files changed, 66 insertions(+), 1 deletion(-)

Comments

Michal Wajdeczko July 21, 2021, 6:05 p.m. UTC | #1 
On 21.07.2021 18:11, Vinay Belgaumkar wrote:
> This prints out relevant SLPC info from the SLPC shared structure.
> 
> We will send a h2g message which forces SLPC to update the
> shared data structure with latest information before reading it.
> 
> v2: Address review comments (Michal W)
> 
> Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
> Signed-off-by: Sundaresan Sujaritha <sujaritha.sundaresan@intel.com>
> ---
>  .../gpu/drm/i915/gt/uc/intel_guc_debugfs.c    | 23 +++++++++++
>  drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c   | 40 +++++++++++++++++++
>  drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h   |  4 +-
>  3 files changed, 66 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c
> index 72ddfff42f7d..46b22187927b 100644
> --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c
> +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c
> @@ -12,6 +12,7 @@
>  #include "gt/uc/intel_guc_ct.h"
>  #include "gt/uc/intel_guc_ads.h"
>  #include "gt/uc/intel_guc_submission.h"
> +#include "gt/uc/intel_guc_slpc.h"
>  
>  static int guc_info_show(struct seq_file *m, void *data)
>  {
> @@ -50,11 +51,33 @@ static int guc_registered_contexts_show(struct seq_file *m, void *data)
>  }
>  DEFINE_GT_DEBUGFS_ATTRIBUTE(guc_registered_contexts);
>  
> +static int guc_slpc_info_show(struct seq_file *m, void *unused)
> +{
> +	struct intel_guc *guc = m->private;
> +	struct intel_guc_slpc *slpc = &guc->slpc;
> +	struct drm_printer p = drm_seq_file_printer(m);
> +
> +	if (!intel_guc_slpc_is_used(guc))
> +		return -ENODEV;
> +
> +	return intel_guc_slpc_info(slpc, &p);
> +}
> +DEFINE_GT_DEBUGFS_ATTRIBUTE(guc_slpc_info);
> +
> +bool intel_eval_slpc_support(void *data)
> +{
> +	struct intel_guc *guc;
> +
> +	guc = (struct intel_guc *)data;

	struct intel_guc *guc = (struct intel_guc *)data;

> +	return intel_guc_slpc_is_used(guc);
> +}
> +
>  void intel_guc_debugfs_register(struct intel_guc *guc, struct dentry *root)
>  {
>  	static const struct debugfs_gt_file files[] = {
>  		{ "guc_info", &guc_info_fops, NULL },
>  		{ "guc_registered_contexts", &guc_registered_contexts_fops, NULL },
> +		{ "guc_slpc_info", &guc_slpc_info_fops, &intel_eval_slpc_support},
>  	};
>  
>  	if (!intel_guc_is_supported(guc))
> diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c
> index c1cf8d46e360..73379985c105 100644
> --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c
> +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c
> @@ -430,6 +430,46 @@ int intel_guc_slpc_enable(struct intel_guc_slpc *slpc)
>  	return 0;
>  }
>  
> +int intel_guc_slpc_info(struct intel_guc_slpc *slpc, struct drm_printer *p)
> +{
> +	struct drm_i915_private *i915 = guc_to_gt(slpc_to_guc(slpc))->i915;
> +	struct slpc_shared_data *data;
> +	struct slpc_task_state_data *slpc_tasks;
> +	intel_wakeref_t wakeref;
> +	int ret = 0;
> +
> +	with_intel_runtime_pm(&i915->runtime_pm, wakeref) {
> +		if (slpc_query_task_state(slpc))
> +			return -EIO;

not sure if you can return directly from "with_rpm"

> +
> +		slpc_tasks = &data->task_state_data;
> +
> +		drm_printf(p, "SLPC state: %s\n", slpc_state_string(slpc));
> +		drm_printf(p, "\tgtperf task active: %s\n",
> +			yesno(slpc_tasks->status & SLPC_GTPERF_TASK_ACTIVE));
> +		drm_printf(p, "\tdcc task active: %s\n",
> +			yesno(slpc_tasks->status & SLPC_DCC_TASK_ACTIVE));
> +		drm_printf(p, "\tin dcc: %s\n",
> +			yesno(slpc_tasks->status & SLPC_IN_DCC));
> +		drm_printf(p, "\tfreq switch active: %s\n",
> +			yesno(slpc_tasks->status & SLPC_FREQ_SWITCH_ACTIVE));
> +		drm_printf(p, "\tibc enabled: %s\n",
> +			yesno(slpc_tasks->status & SLPC_IBC_ENABLED));
> +		drm_printf(p, "\tibc active: %s\n",
> +			yesno(slpc_tasks->status & SLPC_IBC_ACTIVE));
> +		drm_printf(p, "\tpg1 enabled: %s\n",
> +			yesno(slpc_tasks->status & SLPC_PG1_ENABLED));
> +		drm_printf(p, "\tpg1 active: %s\n",
> +			yesno(slpc_tasks->status & SLPC_PG1_ACTIVE));
> +		drm_printf(p, "\tmax freq: %dMHz\n",
> +				slpc_decode_max_freq(slpc));
> +		drm_printf(p, "\tmin freq: %dMHz\n",
> +				slpc_decode_min_freq(slpc));

not sure what they are:

DCC ?
IBC ?
PG1 ?

and make sure to use %u for unsigned

Michal

> +	}
> +
> +	return ret;
> +}
> +
>  void intel_guc_slpc_fini(struct intel_guc_slpc *slpc)
>  {
>  	if (!slpc->vma)
> diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h
> index 627c71a95777..852c6316aa47 100644
> --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h
> +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h
> @@ -10,6 +10,8 @@
>  #include "intel_guc_slpc_types.h"
>  #include "abi/guc_actions_slpc_abi.h"
>  
> +struct drm_printer;
> +
>  static inline bool intel_guc_slpc_is_supported(struct intel_guc *guc)
>  {
>  	return guc->slpc_supported;
> @@ -26,7 +28,6 @@ static inline bool intel_guc_slpc_is_used(struct intel_guc *guc)
>  }
>  
>  void intel_guc_slpc_init_early(struct intel_guc_slpc *slpc);
> -
>  int intel_guc_slpc_init(struct intel_guc_slpc *slpc);
>  int intel_guc_slpc_enable(struct intel_guc_slpc *slpc);
>  void intel_guc_slpc_fini(struct intel_guc_slpc *slpc);
> @@ -34,5 +35,6 @@ int intel_guc_slpc_set_max_freq(struct intel_guc_slpc *slpc, u32 val);
>  int intel_guc_slpc_set_min_freq(struct intel_guc_slpc *slpc, u32 val);
>  int intel_guc_slpc_get_max_freq(struct intel_guc_slpc *slpc, u32 *val);
>  int intel_guc_slpc_get_min_freq(struct intel_guc_slpc *slpc, u32 *val);
> +int intel_guc_slpc_info(struct intel_guc_slpc *slpc, struct drm_printer *p);
>  
>  #endif
>
kernel test robot July 22, 2021, 1:29 a.m. UTC | #2 
Hi Vinay,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on drm-tip/drm-tip]
[cannot apply to drm-intel/for-linux-next drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next drm/drm-next v5.14-rc2 next-20210721]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Vinay-Belgaumkar/drm-i915-guc-Enable-GuC-based-power-management-features/20210722-001528
base:   git://anongit.freedesktop.org/drm/drm-tip drm-tip
config: x86_64-randconfig-a016-20210720 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project c781eb153bfbd1b52b03efe34f56bbeccbb8aba6)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # https://github.com/0day-ci/linux/commit/1c6f8cf3c2757db7a87fceef08834f4e0e14f2f9
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Vinay-Belgaumkar/drm-i915-guc-Enable-GuC-based-power-management-features/20210722-001528
        git checkout 1c6f8cf3c2757db7a87fceef08834f4e0e14f2f9
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c:67:6: warning: no previous prototype for function 'intel_eval_slpc_support' [-Wmissing-prototypes]
   bool intel_eval_slpc_support(void *data)
        ^
   drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c:67:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   bool intel_eval_slpc_support(void *data)
   ^
   static 
   1 warning generated.
--
   drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c:238:5: warning: no previous prototype for function 'slpc_decode_min_freq' [-Wmissing-prototypes]
   u32 slpc_decode_min_freq(struct intel_guc_slpc *slpc)
       ^
   drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c:238:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   u32 slpc_decode_min_freq(struct intel_guc_slpc *slpc)
   ^
   static 
   drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c:250:5: warning: no previous prototype for function 'slpc_decode_max_freq' [-Wmissing-prototypes]
   u32 slpc_decode_max_freq(struct intel_guc_slpc *slpc)
       ^
   drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c:250:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   u32 slpc_decode_max_freq(struct intel_guc_slpc *slpc)
   ^
   static 
>> drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c:445:17: warning: variable 'data' is uninitialized when used here [-Wuninitialized]
                   slpc_tasks = &data->task_state_data;
                                 ^~~~
   drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c:436:31: note: initialize the variable 'data' to silence this warning
           struct slpc_shared_data *data;
                                        ^
                                         = NULL
   3 warnings generated.


vim +/intel_eval_slpc_support +67 drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c

    66	
  > 67	bool intel_eval_slpc_support(void *data)
    68	{
    69		struct intel_guc *guc;
    70	
    71		guc = (struct intel_guc *)data;
    72		return intel_guc_slpc_is_used(guc);
    73	}
    74	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
Vinay Belgaumkar July 23, 2021, 7:49 p.m. UTC | #3 
On 7/21/2021 11:05 AM, Michal Wajdeczko wrote:
> 
> 
> On 21.07.2021 18:11, Vinay Belgaumkar wrote:
>> This prints out relevant SLPC info from the SLPC shared structure.
>>
>> We will send a h2g message which forces SLPC to update the
>> shared data structure with latest information before reading it.
>>
>> v2: Address review comments (Michal W)
>>
>> Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
>> Signed-off-by: Sundaresan Sujaritha <sujaritha.sundaresan@intel.com>
>> ---
>>   .../gpu/drm/i915/gt/uc/intel_guc_debugfs.c    | 23 +++++++++++
>>   drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c   | 40 +++++++++++++++++++
>>   drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h   |  4 +-
>>   3 files changed, 66 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c
>> index 72ddfff42f7d..46b22187927b 100644
>> --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c
>> +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c
>> @@ -12,6 +12,7 @@
>>   #include "gt/uc/intel_guc_ct.h"
>>   #include "gt/uc/intel_guc_ads.h"
>>   #include "gt/uc/intel_guc_submission.h"
>> +#include "gt/uc/intel_guc_slpc.h"
>>   
>>   static int guc_info_show(struct seq_file *m, void *data)
>>   {
>> @@ -50,11 +51,33 @@ static int guc_registered_contexts_show(struct seq_file *m, void *data)
>>   }
>>   DEFINE_GT_DEBUGFS_ATTRIBUTE(guc_registered_contexts);
>>   
>> +static int guc_slpc_info_show(struct seq_file *m, void *unused)
>> +{
>> +	struct intel_guc *guc = m->private;
>> +	struct intel_guc_slpc *slpc = &guc->slpc;
>> +	struct drm_printer p = drm_seq_file_printer(m);
>> +
>> +	if (!intel_guc_slpc_is_used(guc))
>> +		return -ENODEV;
>> +
>> +	return intel_guc_slpc_info(slpc, &p);
>> +}
>> +DEFINE_GT_DEBUGFS_ATTRIBUTE(guc_slpc_info);
>> +
>> +bool intel_eval_slpc_support(void *data)
>> +{
>> +	struct intel_guc *guc;
>> +
>> +	guc = (struct intel_guc *)data;
> 
> 	struct intel_guc *guc = (struct intel_guc *)data;
> 
>> +	return intel_guc_slpc_is_used(guc);
>> +}
>> +
>>   void intel_guc_debugfs_register(struct intel_guc *guc, struct dentry *root)
>>   {
>>   	static const struct debugfs_gt_file files[] = {
>>   		{ "guc_info", &guc_info_fops, NULL },
>>   		{ "guc_registered_contexts", &guc_registered_contexts_fops, NULL },
>> +		{ "guc_slpc_info", &guc_slpc_info_fops, &intel_eval_slpc_support},
>>   	};
>>   
>>   	if (!intel_guc_is_supported(guc))
>> diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c
>> index c1cf8d46e360..73379985c105 100644
>> --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c
>> +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c
>> @@ -430,6 +430,46 @@ int intel_guc_slpc_enable(struct intel_guc_slpc *slpc)
>>   	return 0;
>>   }
>>   
>> +int intel_guc_slpc_info(struct intel_guc_slpc *slpc, struct drm_printer *p)
>> +{
>> +	struct drm_i915_private *i915 = guc_to_gt(slpc_to_guc(slpc))->i915;
>> +	struct slpc_shared_data *data;
>> +	struct slpc_task_state_data *slpc_tasks;
>> +	intel_wakeref_t wakeref;
>> +	int ret = 0;
>> +
>> +	with_intel_runtime_pm(&i915->runtime_pm, wakeref) {
>> +		if (slpc_query_task_state(slpc))
>> +			return -EIO;
> 
> not sure if you can return directly from "with_rpm"

Good point, checking err instead.

> 
>> +
>> +		slpc_tasks = &data->task_state_data;
>> +
>> +		drm_printf(p, "SLPC state: %s\n", slpc_state_string(slpc));
>> +		drm_printf(p, "\tgtperf task active: %s\n",
>> +			yesno(slpc_tasks->status & SLPC_GTPERF_TASK_ACTIVE));
>> +		drm_printf(p, "\tdcc task active: %s\n",
>> +			yesno(slpc_tasks->status & SLPC_DCC_TASK_ACTIVE));
>> +		drm_printf(p, "\tin dcc: %s\n",
>> +			yesno(slpc_tasks->status & SLPC_IN_DCC));
>> +		drm_printf(p, "\tfreq switch active: %s\n",
>> +			yesno(slpc_tasks->status & SLPC_FREQ_SWITCH_ACTIVE));
>> +		drm_printf(p, "\tibc enabled: %s\n",
>> +			yesno(slpc_tasks->status & SLPC_IBC_ENABLED));
>> +		drm_printf(p, "\tibc active: %s\n",
>> +			yesno(slpc_tasks->status & SLPC_IBC_ACTIVE));
>> +		drm_printf(p, "\tpg1 enabled: %s\n",
>> +			yesno(slpc_tasks->status & SLPC_PG1_ENABLED));
>> +		drm_printf(p, "\tpg1 active: %s\n",
>> +			yesno(slpc_tasks->status & SLPC_PG1_ACTIVE));
>> +		drm_printf(p, "\tmax freq: %dMHz\n",
>> +				slpc_decode_max_freq(slpc));
>> +		drm_printf(p, "\tmin freq: %dMHz\n",
>> +				slpc_decode_min_freq(slpc));
> 
> not sure what they are:
> 
> DCC ?
> IBC ?
> PG1 ?

Removed these for now, since we don't use/enable them yet anyways.

> 
> and make sure to use %u for unsigned

Ok.
Thanks,
Vinay.

> 
> Michal
> 
>> +	}
>> +
>> +	return ret;
>> +}
>> +
>>   void intel_guc_slpc_fini(struct intel_guc_slpc *slpc)
>>   {
>>   	if (!slpc->vma)
>> diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h
>> index 627c71a95777..852c6316aa47 100644
>> --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h
>> +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h
>> @@ -10,6 +10,8 @@
>>   #include "intel_guc_slpc_types.h"
>>   #include "abi/guc_actions_slpc_abi.h"
>>   
>> +struct drm_printer;
>> +
>>   static inline bool intel_guc_slpc_is_supported(struct intel_guc *guc)
>>   {
>>   	return guc->slpc_supported;
>> @@ -26,7 +28,6 @@ static inline bool intel_guc_slpc_is_used(struct intel_guc *guc)
>>   }
>>   
>>   void intel_guc_slpc_init_early(struct intel_guc_slpc *slpc);
>> -
>>   int intel_guc_slpc_init(struct intel_guc_slpc *slpc);
>>   int intel_guc_slpc_enable(struct intel_guc_slpc *slpc);
>>   void intel_guc_slpc_fini(struct intel_guc_slpc *slpc);
>> @@ -34,5 +35,6 @@ int intel_guc_slpc_set_max_freq(struct intel_guc_slpc *slpc, u32 val);
>>   int intel_guc_slpc_set_min_freq(struct intel_guc_slpc *slpc, u32 val);
>>   int intel_guc_slpc_get_max_freq(struct intel_guc_slpc *slpc, u32 *val);
>>   int intel_guc_slpc_get_min_freq(struct intel_guc_slpc *slpc, u32 *val);
>> +int intel_guc_slpc_info(struct intel_guc_slpc *slpc, struct drm_printer *p);
>>   
>>   #endif
>>
kernel test robot July 24, 2021, 12:31 a.m. UTC | #4 
Hi Vinay,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on drm-tip/drm-tip]
[cannot apply to drm-intel/for-linux-next drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next drm/drm-next v5.14-rc2 next-20210723]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Vinay-Belgaumkar/drm-i915-guc-Enable-GuC-based-power-management-features/20210722-001528
base:   git://anongit.freedesktop.org/drm/drm-tip drm-tip
config: x86_64-rhel-8.3-kselftests (attached as .config)
compiler: gcc-10 (Ubuntu 10.3.0-1ubuntu1~20.04) 10.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.3-341-g8af24329-dirty
        # https://github.com/0day-ci/linux/commit/1c6f8cf3c2757db7a87fceef08834f4e0e14f2f9
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Vinay-Belgaumkar/drm-i915-guc-Enable-GuC-based-power-management-features/20210722-001528
        git checkout 1c6f8cf3c2757db7a87fceef08834f4e0e14f2f9
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/gpu/drm/i915/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)
>> drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c:67:6: sparse: sparse: symbol 'intel_eval_slpc_support' was not declared. Should it be static?

Please review and possibly fold the followup patch.

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
kernel test robot July 25, 2021, 2:57 a.m. UTC | #5 
Hi Vinay,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on drm-tip/drm-tip]
[cannot apply to drm-intel/for-linux-next drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next drm/drm-next v5.14-rc2 next-20210723]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Vinay-Belgaumkar/drm-i915-guc-Enable-GuC-based-power-management-features/20210722-001528
base:   git://anongit.freedesktop.org/drm/drm-tip drm-tip
config: x86_64-rhel-8.3-kselftests (attached as .config)
compiler: gcc-10 (Ubuntu 10.3.0-1ubuntu1~20.04) 10.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.3-341-g8af24329-dirty
        # https://github.com/0day-ci/linux/commit/1c6f8cf3c2757db7a87fceef08834f4e0e14f2f9
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Vinay-Belgaumkar/drm-i915-guc-Enable-GuC-based-power-management-features/20210722-001528
        git checkout 1c6f8cf3c2757db7a87fceef08834f4e0e14f2f9
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/gpu/drm/i915/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)
>> drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c:67:6: sparse: sparse: symbol 'intel_eval_slpc_support' was not declared. Should it be static?

vim +/intel_eval_slpc_support +67 drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c

    66	
  > 67	bool intel_eval_slpc_support(void *data)
    68	{
    69		struct intel_guc *guc;
    70	
    71		guc = (struct intel_guc *)data;
    72		return intel_guc_slpc_is_used(guc);
    73	}
    74	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c
index 72ddfff42f7d..46b22187927b 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c
@@ -12,6 +12,7 @@ 
 #include "gt/uc/intel_guc_ct.h"
 #include "gt/uc/intel_guc_ads.h"
 #include "gt/uc/intel_guc_submission.h"
+#include "gt/uc/intel_guc_slpc.h"
 
 static int guc_info_show(struct seq_file *m, void *data)
 {
@@ -50,11 +51,33 @@  static int guc_registered_contexts_show(struct seq_file *m, void *data)
 }
 DEFINE_GT_DEBUGFS_ATTRIBUTE(guc_registered_contexts);
 
+static int guc_slpc_info_show(struct seq_file *m, void *unused)
+{
+	struct intel_guc *guc = m->private;
+	struct intel_guc_slpc *slpc = &guc->slpc;
+	struct drm_printer p = drm_seq_file_printer(m);
+
+	if (!intel_guc_slpc_is_used(guc))
+		return -ENODEV;
+
+	return intel_guc_slpc_info(slpc, &p);
+}
+DEFINE_GT_DEBUGFS_ATTRIBUTE(guc_slpc_info);
+
+bool intel_eval_slpc_support(void *data)
+{
+	struct intel_guc *guc;
+
+	guc = (struct intel_guc *)data;
+	return intel_guc_slpc_is_used(guc);
+}
+
 void intel_guc_debugfs_register(struct intel_guc *guc, struct dentry *root)
 {
 	static const struct debugfs_gt_file files[] = {
 		{ "guc_info", &guc_info_fops, NULL },
 		{ "guc_registered_contexts", &guc_registered_contexts_fops, NULL },
+		{ "guc_slpc_info", &guc_slpc_info_fops, &intel_eval_slpc_support},
 	};
 
 	if (!intel_guc_is_supported(guc))
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c
index c1cf8d46e360..73379985c105 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c
@@ -430,6 +430,46 @@  int intel_guc_slpc_enable(struct intel_guc_slpc *slpc)
 	return 0;
 }
 
+int intel_guc_slpc_info(struct intel_guc_slpc *slpc, struct drm_printer *p)
+{
+	struct drm_i915_private *i915 = guc_to_gt(slpc_to_guc(slpc))->i915;
+	struct slpc_shared_data *data;
+	struct slpc_task_state_data *slpc_tasks;
+	intel_wakeref_t wakeref;
+	int ret = 0;
+
+	with_intel_runtime_pm(&i915->runtime_pm, wakeref) {
+		if (slpc_query_task_state(slpc))
+			return -EIO;
+
+		slpc_tasks = &data->task_state_data;
+
+		drm_printf(p, "SLPC state: %s\n", slpc_state_string(slpc));
+		drm_printf(p, "\tgtperf task active: %s\n",
+			yesno(slpc_tasks->status & SLPC_GTPERF_TASK_ACTIVE));
+		drm_printf(p, "\tdcc task active: %s\n",
+			yesno(slpc_tasks->status & SLPC_DCC_TASK_ACTIVE));
+		drm_printf(p, "\tin dcc: %s\n",
+			yesno(slpc_tasks->status & SLPC_IN_DCC));
+		drm_printf(p, "\tfreq switch active: %s\n",
+			yesno(slpc_tasks->status & SLPC_FREQ_SWITCH_ACTIVE));
+		drm_printf(p, "\tibc enabled: %s\n",
+			yesno(slpc_tasks->status & SLPC_IBC_ENABLED));
+		drm_printf(p, "\tibc active: %s\n",
+			yesno(slpc_tasks->status & SLPC_IBC_ACTIVE));
+		drm_printf(p, "\tpg1 enabled: %s\n",
+			yesno(slpc_tasks->status & SLPC_PG1_ENABLED));
+		drm_printf(p, "\tpg1 active: %s\n",
+			yesno(slpc_tasks->status & SLPC_PG1_ACTIVE));
+		drm_printf(p, "\tmax freq: %dMHz\n",
+				slpc_decode_max_freq(slpc));
+		drm_printf(p, "\tmin freq: %dMHz\n",
+				slpc_decode_min_freq(slpc));
+	}
+
+	return ret;
+}
+
 void intel_guc_slpc_fini(struct intel_guc_slpc *slpc)
 {
 	if (!slpc->vma)
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h
index 627c71a95777..852c6316aa47 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h
@@ -10,6 +10,8 @@ 
 #include "intel_guc_slpc_types.h"
 #include "abi/guc_actions_slpc_abi.h"
 
+struct drm_printer;
+
 static inline bool intel_guc_slpc_is_supported(struct intel_guc *guc)
 {
 	return guc->slpc_supported;
@@ -26,7 +28,6 @@  static inline bool intel_guc_slpc_is_used(struct intel_guc *guc)
 }
 
 void intel_guc_slpc_init_early(struct intel_guc_slpc *slpc);
-
 int intel_guc_slpc_init(struct intel_guc_slpc *slpc);
 int intel_guc_slpc_enable(struct intel_guc_slpc *slpc);
 void intel_guc_slpc_fini(struct intel_guc_slpc *slpc);
@@ -34,5 +35,6 @@  int intel_guc_slpc_set_max_freq(struct intel_guc_slpc *slpc, u32 val);
 int intel_guc_slpc_set_min_freq(struct intel_guc_slpc *slpc, u32 val);
 int intel_guc_slpc_get_max_freq(struct intel_guc_slpc *slpc, u32 *val);
 int intel_guc_slpc_get_min_freq(struct intel_guc_slpc *slpc, u32 *val);
+int intel_guc_slpc_info(struct intel_guc_slpc *slpc, struct drm_printer *p);
 
 #endif