Commit 71f5933c authored by Michal Wajdeczko's avatar Michal Wajdeczko
Browse files

drm/xe/pf: Allow bulk change all VFs EQ/PT using sysfs 



It is expected to be a common practice to configure the same values
of execution quantum and preemption timeout parameters across all VFs.

Add write-only sysfs attributes that will apply required EQ/PT values
globally, without forcing admin to update PF and each VF separately.

  /sys/bus/pci/drivers/xe/BDF/
  ├── sriov_admin/
      ├── .bulk_profile
      │   ├── exec_quantum_ms		[WO] unsigned integer
      │   └── preempt_timeout_us	[WO] unsigned integer

Signed-off-by: default avatarMichal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: default avatarLucas De Marchi <lucas.demarchi@intel.com>
Link: https://patch.msgid.link/20251030222348.186658-11-michal.wajdeczko@intel.com
parent b7a73b57

drivers/gpu/drm/xe/xe_sriov_pf_sysfs.c

+36 −0
Original line number Diff line number Diff line
@@ -22,6 +22,9 @@ 
 * :

 * ├── sriov_admin/

 *     ├── ...

 *     ├── .bulk_profile

 *     │   ├── exec_quantum_ms

 *     │   └── preempt_timeout_us

 *     ├── pf/

 *     │   ├── ...

 *     │   └── profile
@@ -84,7 +87,40 @@ struct xe_sriov_vf_attr xe_sriov_vf_attr_##NAME = \ 


/* device level attributes go here */



#define DEFINE_SIMPLE_BULK_PROVISIONING_SRIOV_DEV_ATTR_WO(NAME, ITEM, TYPE)		\

											\

static ssize_t xe_sriov_dev_attr_##NAME##_store(struct xe_device *xe,			\

						const char *buf, size_t count)		\

{											\

	TYPE value;									\

	int err;									\

											\

	err = kstrto##TYPE(buf, 0, &value);						\

	if (err)									\

		return err;								\

											\

	err = xe_sriov_pf_provision_bulk_apply_##ITEM(xe, value);			\

	return err ?: count;								\

}											\

											\

static XE_SRIOV_DEV_ATTR_WO(NAME)



DEFINE_SIMPLE_BULK_PROVISIONING_SRIOV_DEV_ATTR_WO(exec_quantum_ms, eq, u32);

DEFINE_SIMPLE_BULK_PROVISIONING_SRIOV_DEV_ATTR_WO(preempt_timeout_us, pt, u32);



static struct attribute *bulk_profile_dev_attrs[] = {

	&xe_sriov_dev_attr_exec_quantum_ms.attr,

	&xe_sriov_dev_attr_preempt_timeout_us.attr,

	NULL

};



static const struct attribute_group bulk_profile_dev_attr_group = {

	.name = ".bulk_profile",

	.attrs = bulk_profile_dev_attrs,

};



static const struct attribute_group *xe_sriov_dev_attr_groups[] = {

	&bulk_profile_dev_attr_group,

	NULL

};