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From: Amit Singh Tomar <amitsinght@marvell.com>
To: <linux-kernel@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org>
Cc: <fenghua.yu@intel.com>, <reinette.chatre@intel.com>,
	<james.morse@arm.com>, <gcherian@marvell.com>, <robh@kernel.org>,
	<peternewman@google.com>,
	Amit Singh Tomar <amitsinght@marvell.com>
Subject: [RFC 03/12] arm_mpam: resctrl: Define new schemata format for priority partition
Date: Tue, 15 Aug 2023 20:57:03 +0530	[thread overview]
Message-ID: <20230815152712.1760046-4-amitsinght@marvell.com> (raw)
In-Reply-To: <20230815152712.1760046-1-amitsinght@marvell.com>

At the moment, "schemata" file contains information about cache portion
bitmap (CPBM), and memory bandwidth allocation (MBA) in the following
format.

MB:0=0100
L3:0=ffff

Lets' update the "schemata" file to accommodate information about
priority partition control that indicates downstream priority value.

For instance:

L3:0=ffff,f

CPBM is separated from downstream priority value using delimiter ",".

Signed-off-by: Amit Singh Tomar <amitsinght@marvell.com>
---
 drivers/platform/mpam/mpam_resctrl.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/mpam/mpam_resctrl.c b/drivers/platform/mpam/mpam_resctrl.c
index 09618d9ceb1d..1081ceac41a8 100644
--- a/drivers/platform/mpam/mpam_resctrl.c
+++ b/drivers/platform/mpam/mpam_resctrl.c
@@ -711,7 +711,11 @@ static int mpam_resctrl_resource_init(struct mpam_resctrl_res *res)
 		r->cache.min_cbm_bits = 1;
 
 		/* TODO: kill these properties off as they are derivatives */
-		r->format_str = "%d=%0*x";
+		if (mpam_has_feature(mpam_feat_dspri_part, &class->props))
+			r->format_str = "%d=%0*x,%0*x";
+		else
+			r->format_str = "%d=%0*x";
+
 		r->fflags = RFTYPE_RES_CACHE;
 		r->default_ctrl = BIT_MASK(class->props.cpbm_wd) - 1;
 		r->data_width = (class->props.cpbm_wd + 3) / 4;
-- 
2.25.1


  parent reply	other threads:[~2023-08-15 15:28 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-08-15 15:27 [RFC 00/12] ARM: MPAM: add support for priority partitioning control Amit Singh Tomar
2023-08-15 15:27 ` [RFC 01/12] arm_mpam: Handle resource instances mapped to different controls Amit Singh Tomar
2023-09-01 12:39   ` Jonathan Cameron
2023-08-15 15:27 ` [RFC 02/12] arm_mpam: resctrl: Detect priority partitioning capability Amit Singh Tomar
2023-09-01 12:30   ` Jonathan Cameron
2023-08-15 15:27 ` Amit Singh Tomar [this message]
2023-08-15 15:27 ` [RFC 04/12] fs/resctrl: Obtain CPBM upon priority partition presence Amit Singh Tomar
2023-08-15 15:27 ` [RFC 05/12] fs/resctrl: Set-up downstream priority partition resources Amit Singh Tomar
2023-08-17 17:39   ` Fenghua Yu
2023-08-15 15:27 ` [RFC 06/12] fs/resctrl: Extend schemata read for priority partition control Amit Singh Tomar
2023-08-17 17:42   ` Fenghua Yu
2023-08-15 15:27 ` [RFC 07/12] arm_mpam: resctrl: Retrieve priority values from arch code Amit Singh Tomar
2023-08-15 15:27 ` [RFC 08/12] fs/resctrl: Schemata write only for intended resource Amit Singh Tomar
2023-08-15 15:27 ` [RFC 09/12] fs/resctrl: Extend schemata write for priority partition control Amit Singh Tomar
2023-08-17 17:27   ` Fenghua Yu
2023-08-17 17:53   ` Fenghua Yu
2023-08-15 15:27 ` [RFC 10/12] arm_mpam: resctrl: Facilitate writing downstream priority value Amit Singh Tomar
2023-08-15 15:27 ` [RFC 11/12] arm_mpam: Fix Downstream priority mask Amit Singh Tomar
2023-09-01 13:32   ` Jonathan Cameron
2023-08-15 15:27 ` [RFC 12/12] arm_mpam: Program Downstream priority value Amit Singh Tomar
2023-09-01 13:17   ` Jonathan Cameron
2023-08-17 19:11 ` [RFC 00/12] ARM: MPAM: add support for priority partitioning control Reinette Chatre
2023-08-17 20:29   ` Reinette Chatre
2023-08-22 12:44   ` [EXT] " Amit Singh Tomar
2023-08-23 19:06     ` Reinette Chatre
2023-08-23 21:33       ` Amit Singh Tomar
2023-08-23 22:20         ` Reinette Chatre
2023-08-23 22:36           ` Luck, Tony
2023-08-24  8:52           ` Amit Singh Tomar
2023-08-24 15:30             ` Luck, Tony
2023-08-24 18:00             ` Reinette Chatre
2024-01-11 20:56             ` Peter Newman
2024-01-11 21:40               ` Tony Luck
2024-01-11 22:01                 ` Reinette Chatre
2024-01-11 23:14                   ` Luck, Tony
2024-01-11 23:31                     ` Reinette Chatre
2023-08-22  9:01 ` Peter Newman
2023-09-01 14:42 ` Jonathan Cameron
2023-09-01 15:04 ` Jonathan Cameron

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