linux-kernel - [PATCH v18 09/17] x86/resctrl: Add new fields to struct rmid

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Date: Wed, 15 May 2024 15:23:17 -0700
From: Tony Luck <tony.luck@...el.com>
To: Fenghua Yu <fenghua.yu@...el.com>,
	Reinette Chatre <reinette.chatre@...el.com>,
	Maciej Wieczor-Retman <maciej.wieczor-retman@...el.com>,
	Peter Newman <peternewman@...gle.com>,
	James Morse <james.morse@....com>,
	Babu Moger <babu.moger@....com>,
	Drew Fustini <dfustini@...libre.com>,
	Dave Martin <Dave.Martin@....com>
Cc: x86@...nel.org,
	linux-kernel@...r.kernel.org,
	patches@...ts.linux.dev,
	Tony Luck <tony.luck@...el.com>
Subject: [PATCH v18 09/17] x86/resctrl: Add new fields to struct rmid_read for summation of domains

rdtgroup_mondata_show() calls mon_event_count() which packages up all
the required details into an rmid_read structure passed across the
smp_call*() infrastructure.

Legacy files reporting for a single domain pass that domain in the
rmid_read structure. Files that need to sum multiple domains have
meta data that provides the display_id for domains that must be
summed.

Add the sumdomains and display_id fields to the rmid_read structure.

Signed-off-by: Tony Luck <tony.luck@...el.com>
---
 arch/x86/kernel/cpu/resctrl/internal.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/kernel/cpu/resctrl/internal.h b/arch/x86/kernel/cpu/resctrl/internal.h
index 49440f194253..498c5d240c68 100644
--- a/arch/x86/kernel/cpu/resctrl/internal.h
+++ b/arch/x86/kernel/cpu/resctrl/internal.h
@@ -150,6 +150,8 @@ struct rmid_read {
 	struct rdt_mon_domain	*d;
 	enum resctrl_event_id	evtid;
 	bool			first;
+	bool			sumdomains;
+	int			display_id;
 	int			err;
 	u64			val;
 	void			*arch_mon_ctx;
-- 
2.44.0