[v4] x86/resctrl: Miscellaneous resctrl features

[PATCH v4 3/7] x86/resctrl: Rename rftype flags for consistency

Posted by Babu Moger 2 years, 8 months ago

The rftype flags have two different prefixes even though they are used
for the same purpose. Change the prefix to RFTYPE_ for all the flags.

Signed-off-by: Babu Moger <babu.moger@amd.com>
---
 arch/x86/kernel/cpu/resctrl/internal.h |    8 +++---
 arch/x86/kernel/cpu/resctrl/rdtgroup.c |   42 ++++++++++++++++----------------
 2 files changed, 25 insertions(+), 25 deletions(-)

diff --git a/arch/x86/kernel/cpu/resctrl/internal.h b/arch/x86/kernel/cpu/resctrl/internal.h
index 62767774810d..c4fc5a1c630c 100644
--- a/arch/x86/kernel/cpu/resctrl/internal.h
+++ b/arch/x86/kernel/cpu/resctrl/internal.h
@@ -248,10 +248,10 @@ struct rdtgroup {
 #define RFTYPE_TOP			BIT(6)
 #define RFTYPE_RES_CACHE		BIT(8)
 #define RFTYPE_RES_MB			BIT(9)
-#define RF_CTRL_INFO			(RFTYPE_INFO | RFTYPE_CTRL)
-#define RF_MON_INFO			(RFTYPE_INFO | RFTYPE_MON)
-#define RF_TOP_INFO			(RFTYPE_INFO | RFTYPE_TOP)
-#define RF_CTRL_BASE			(RFTYPE_BASE | RFTYPE_CTRL)
+#define RFTYPE_CTRL_INFO		(RFTYPE_INFO | RFTYPE_CTRL)
+#define RFTYPE_MON_INFO			(RFTYPE_INFO | RFTYPE_MON)
+#define RFTYPE_TOP_INFO			(RFTYPE_INFO | RFTYPE_TOP)
+#define RFTYPE_CTRL_BASE		(RFTYPE_BASE | RFTYPE_CTRL)
 
 /* List of all resource groups */
 extern struct list_head rdt_all_groups;
diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
index 6cd0a8396f30..719e29248892 100644
--- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c
+++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
@@ -1711,77 +1711,77 @@ static struct rftype res_common_files[] = {
 		.mode		= 0444,
 		.kf_ops		= &rdtgroup_kf_single_ops,
 		.seq_show	= rdt_last_cmd_status_show,
-		.fflags		= RF_TOP_INFO,
+		.fflags		= RFTYPE_TOP_INFO,
 	},
 	{
 		.name		= "num_closids",
 		.mode		= 0444,
 		.kf_ops		= &rdtgroup_kf_single_ops,
 		.seq_show	= rdt_num_closids_show,
-		.fflags		= RF_CTRL_INFO,
+		.fflags		= RFTYPE_CTRL_INFO,
 	},
 	{
 		.name		= "mon_features",
 		.mode		= 0444,
 		.kf_ops		= &rdtgroup_kf_single_ops,
 		.seq_show	= rdt_mon_features_show,
-		.fflags		= RF_MON_INFO,
+		.fflags		= RFTYPE_MON_INFO,
 	},
 	{
 		.name		= "num_rmids",
 		.mode		= 0444,
 		.kf_ops		= &rdtgroup_kf_single_ops,
 		.seq_show	= rdt_num_rmids_show,
-		.fflags		= RF_MON_INFO,
+		.fflags		= RFTYPE_MON_INFO,
 	},
 	{
 		.name		= "cbm_mask",
 		.mode		= 0444,
 		.kf_ops		= &rdtgroup_kf_single_ops,
 		.seq_show	= rdt_default_ctrl_show,
-		.fflags		= RF_CTRL_INFO | RFTYPE_RES_CACHE,
+		.fflags		= RFTYPE_CTRL_INFO | RFTYPE_RES_CACHE,
 	},
 	{
 		.name		= "min_cbm_bits",
 		.mode		= 0444,
 		.kf_ops		= &rdtgroup_kf_single_ops,
 		.seq_show	= rdt_min_cbm_bits_show,
-		.fflags		= RF_CTRL_INFO | RFTYPE_RES_CACHE,
+		.fflags		= RFTYPE_CTRL_INFO | RFTYPE_RES_CACHE,
 	},
 	{
 		.name		= "shareable_bits",
 		.mode		= 0444,
 		.kf_ops		= &rdtgroup_kf_single_ops,
 		.seq_show	= rdt_shareable_bits_show,
-		.fflags		= RF_CTRL_INFO | RFTYPE_RES_CACHE,
+		.fflags		= RFTYPE_CTRL_INFO | RFTYPE_RES_CACHE,
 	},
 	{
 		.name		= "bit_usage",
 		.mode		= 0444,
 		.kf_ops		= &rdtgroup_kf_single_ops,
 		.seq_show	= rdt_bit_usage_show,
-		.fflags		= RF_CTRL_INFO | RFTYPE_RES_CACHE,
+		.fflags		= RFTYPE_CTRL_INFO | RFTYPE_RES_CACHE,
 	},
 	{
 		.name		= "min_bandwidth",
 		.mode		= 0444,
 		.kf_ops		= &rdtgroup_kf_single_ops,
 		.seq_show	= rdt_min_bw_show,
-		.fflags		= RF_CTRL_INFO | RFTYPE_RES_MB,
+		.fflags		= RFTYPE_CTRL_INFO | RFTYPE_RES_MB,
 	},
 	{
 		.name		= "bandwidth_gran",
 		.mode		= 0444,
 		.kf_ops		= &rdtgroup_kf_single_ops,
 		.seq_show	= rdt_bw_gran_show,
-		.fflags		= RF_CTRL_INFO | RFTYPE_RES_MB,
+		.fflags		= RFTYPE_CTRL_INFO | RFTYPE_RES_MB,
 	},
 	{
 		.name		= "delay_linear",
 		.mode		= 0444,
 		.kf_ops		= &rdtgroup_kf_single_ops,
 		.seq_show	= rdt_delay_linear_show,
-		.fflags		= RF_CTRL_INFO | RFTYPE_RES_MB,
+		.fflags		= RFTYPE_CTRL_INFO | RFTYPE_RES_MB,
 	},
 	/*
 	 * Platform specific which (if any) capabilities are provided by
@@ -1800,7 +1800,7 @@ static struct rftype res_common_files[] = {
 		.kf_ops		= &rdtgroup_kf_single_ops,
 		.write		= max_threshold_occ_write,
 		.seq_show	= max_threshold_occ_show,
-		.fflags		= RF_MON_INFO | RFTYPE_RES_CACHE,
+		.fflags		= RFTYPE_MON_INFO | RFTYPE_RES_CACHE,
 	},
 	{
 		.name		= "mbm_total_bytes_config",
@@ -1847,7 +1847,7 @@ static struct rftype res_common_files[] = {
 		.kf_ops		= &rdtgroup_kf_single_ops,
 		.write		= rdtgroup_schemata_write,
 		.seq_show	= rdtgroup_schemata_show,
-		.fflags		= RF_CTRL_BASE,
+		.fflags		= RFTYPE_CTRL_BASE,
 	},
 	{
 		.name		= "mode",
@@ -1855,14 +1855,14 @@ static struct rftype res_common_files[] = {
 		.kf_ops		= &rdtgroup_kf_single_ops,
 		.write		= rdtgroup_mode_write,
 		.seq_show	= rdtgroup_mode_show,
-		.fflags		= RF_CTRL_BASE,
+		.fflags		= RFTYPE_CTRL_BASE,
 	},
 	{
 		.name		= "size",
 		.mode		= 0444,
 		.kf_ops		= &rdtgroup_kf_single_ops,
 		.seq_show	= rdtgroup_size_show,
-		.fflags		= RF_CTRL_BASE,
+		.fflags		= RFTYPE_CTRL_BASE,
 	},
 
 };
@@ -1919,7 +1919,7 @@ void __init thread_throttle_mode_init(void)
 	if (!rft)
 		return;
 
-	rft->fflags = RF_CTRL_INFO | RFTYPE_RES_MB;
+	rft->fflags = RFTYPE_CTRL_INFO | RFTYPE_RES_MB;
 }
 
 void __init mbm_config_rftype_init(const char *config)
@@ -1928,7 +1928,7 @@ void __init mbm_config_rftype_init(const char *config)
 
 	rft = rdtgroup_get_rftype_by_name(config);
 	if (rft)
-		rft->fflags = RF_MON_INFO | RFTYPE_RES_CACHE;
+		rft->fflags = RFTYPE_MON_INFO | RFTYPE_RES_CACHE;
 }
 
 /**
@@ -2063,21 +2063,21 @@ static int rdtgroup_create_info_dir(struct kernfs_node *parent_kn)
 	if (IS_ERR(kn_info))
 		return PTR_ERR(kn_info);
 
-	ret = rdtgroup_add_files(kn_info, RF_TOP_INFO);
+	ret = rdtgroup_add_files(kn_info, RFTYPE_TOP_INFO);
 	if (ret)
 		goto out_destroy;
 
 	/* loop over enabled controls, these are all alloc_capable */
 	list_for_each_entry(s, &resctrl_schema_all, list) {
 		r = s->res;
-		fflags =  r->fflags | RF_CTRL_INFO;
+		fflags = r->fflags | RFTYPE_CTRL_INFO;
 		ret = rdtgroup_mkdir_info_resdir(s, s->name, fflags);
 		if (ret)
 			goto out_destroy;
 	}
 
 	for_each_mon_capable_rdt_resource(r) {
-		fflags =  r->fflags | RF_MON_INFO;
+		fflags = r->fflags | RFTYPE_MON_INFO;
 		sprintf(name, "%s_MON", r->name);
 		ret = rdtgroup_mkdir_info_resdir(r, name, fflags);
 		if (ret)
@@ -3578,7 +3578,7 @@ static int __init rdtgroup_setup_root(void)
 
 	list_add(&rdtgroup_default.rdtgroup_list, &rdt_all_groups);
 
-	ret = rdtgroup_add_files(kernfs_root_to_node(rdt_root), RF_CTRL_BASE);
+	ret = rdtgroup_add_files(kernfs_root_to_node(rdt_root), RFTYPE_CTRL_BASE);
 	if (ret) {
 		kernfs_destroy_root(rdt_root);
 		goto out;

Re: [PATCH v4 3/7] x86/resctrl: Rename rftype flags for consistency

Posted by Reinette Chatre 2 years, 7 months ago

Hi Babu,

On 4/17/2023 4:34 PM, Babu Moger wrote:
> The rftype flags have two different prefixes even though they are used

Could this changelog please start with some context about what the
rftype flags are? Please note that the changelogs are required
to comply to the x86 requirements as documented in:
Documentation/process/maintainer-tip.rst (there is a whole
section on changelogs).

After a context the problem could be made specific with something
like "rftype flags use the RF_ as well as RFTYPE_ prefixes."

Reinette

Re: [PATCH v4 3/7] x86/resctrl: Rename rftype flags for consistency

Posted by Ilpo Järvinen 2 years, 8 months ago

On Mon, 17 Apr 2023, Babu Moger wrote:

> The rftype flags have two different prefixes even though they are used
> for the same purpose. Change the prefix to RFTYPE_ for all the flags.
> 
> Signed-off-by: Babu Moger <babu.moger@amd.com>
> ---
>  arch/x86/kernel/cpu/resctrl/internal.h |    8 +++---
>  arch/x86/kernel/cpu/resctrl/rdtgroup.c |   42 ++++++++++++++++----------------
>  2 files changed, 25 insertions(+), 25 deletions(-)
> 
> diff --git a/arch/x86/kernel/cpu/resctrl/internal.h b/arch/x86/kernel/cpu/resctrl/internal.h
> index 62767774810d..c4fc5a1c630c 100644
> --- a/arch/x86/kernel/cpu/resctrl/internal.h
> +++ b/arch/x86/kernel/cpu/resctrl/internal.h
> @@ -248,10 +248,10 @@ struct rdtgroup {
>  #define RFTYPE_TOP			BIT(6)
>  #define RFTYPE_RES_CACHE		BIT(8)
>  #define RFTYPE_RES_MB			BIT(9)
> -#define RF_CTRL_INFO			(RFTYPE_INFO | RFTYPE_CTRL)
> -#define RF_MON_INFO			(RFTYPE_INFO | RFTYPE_MON)
> -#define RF_TOP_INFO			(RFTYPE_INFO | RFTYPE_TOP)
> -#define RF_CTRL_BASE			(RFTYPE_BASE | RFTYPE_CTRL)
> +#define RFTYPE_CTRL_INFO		(RFTYPE_INFO | RFTYPE_CTRL)
> +#define RFTYPE_MON_INFO			(RFTYPE_INFO | RFTYPE_MON)
> +#define RFTYPE_TOP_INFO			(RFTYPE_INFO | RFTYPE_TOP)
> +#define RFTYPE_CTRL_BASE		(RFTYPE_BASE | RFTYPE_CTRL)
>  
>  /* List of all resource groups */
>  extern struct list_head rdt_all_groups;

This needs to be changed as well:

 * @fflags:  File specific RF_* or RFTYPE_* flags


-- 
 i.

Re: [PATCH v4 3/7] x86/resctrl: Rename rftype flags for consistency

Posted by Moger, Babu 2 years, 8 months ago

Hi Jarvinen,

On 4/19/23 07:44, Ilpo Järvinen wrote:
> On Mon, 17 Apr 2023, Babu Moger wrote:
> 
>> The rftype flags have two different prefixes even though they are used
>> for the same purpose. Change the prefix to RFTYPE_ for all the flags.
>>
>> Signed-off-by: Babu Moger <babu.moger@amd.com>
>> ---
>>  arch/x86/kernel/cpu/resctrl/internal.h |    8 +++---
>>  arch/x86/kernel/cpu/resctrl/rdtgroup.c |   42 ++++++++++++++++----------------
>>  2 files changed, 25 insertions(+), 25 deletions(-)
>>
>> diff --git a/arch/x86/kernel/cpu/resctrl/internal.h b/arch/x86/kernel/cpu/resctrl/internal.h
>> index 62767774810d..c4fc5a1c630c 100644
>> --- a/arch/x86/kernel/cpu/resctrl/internal.h
>> +++ b/arch/x86/kernel/cpu/resctrl/internal.h
>> @@ -248,10 +248,10 @@ struct rdtgroup {
>>  #define RFTYPE_TOP			BIT(6)
>>  #define RFTYPE_RES_CACHE		BIT(8)
>>  #define RFTYPE_RES_MB			BIT(9)
>> -#define RF_CTRL_INFO			(RFTYPE_INFO | RFTYPE_CTRL)
>> -#define RF_MON_INFO			(RFTYPE_INFO | RFTYPE_MON)
>> -#define RF_TOP_INFO			(RFTYPE_INFO | RFTYPE_TOP)
>> -#define RF_CTRL_BASE			(RFTYPE_BASE | RFTYPE_CTRL)
>> +#define RFTYPE_CTRL_INFO		(RFTYPE_INFO | RFTYPE_CTRL)
>> +#define RFTYPE_MON_INFO			(RFTYPE_INFO | RFTYPE_MON)
>> +#define RFTYPE_TOP_INFO			(RFTYPE_INFO | RFTYPE_TOP)
>> +#define RFTYPE_CTRL_BASE		(RFTYPE_BASE | RFTYPE_CTRL)
>>  
>>  /* List of all resource groups */
>>  extern struct list_head rdt_all_groups;
> 
> This needs to be changed as well:
> 
>  * @fflags:  File specific RF_* or RFTYPE_* flags

Yes. Thanks for pointing that. Will correct it in next revision.
-- 
Thanks
Babu Moger

[PATCH v4 1/7] x86/resctrl: Add multiple tasks to the resctrl group at once
[PATCH v4 2/7] x86/resctrl: Remove unnecessary rftype flags
[PATCH v4 3/7] x86/resctrl: Rename rftype flags for consistency
[PATCH v4 4/7] x86/resctrl: Re-arrange RFTYPE flags and add more comments
[PATCH v4 5/7] x86/resctrl: Introduce "-o debug" mount option
[PATCH v4 6/7] x86/resctrl: Display CLOSID and RMID for the resctrl groups
[PATCH v4 7/7] x86/resctrl: Add debug files when mounted with debug option