From 6b10cf7b6ea857cdf9570e21c077a05803f60575 Mon Sep 17 00:00:00 2001 From: Tony Luck Date: Wed, 17 Dec 2025 09:20:54 -0800 Subject: x86,fs/resctrl: Use struct rdt_domain_hdr when reading counters Convert the whole call sequence from mon_event_read() to resctrl_arch_rmid_read() to pass resource independent struct rdt_domain_hdr instead of an L3 specific domain structure to prepare for monitoring events in other resources. This additional layer of indirection obscures which aspects of event counting depend on a valid domain. Event initialization, support for assignable counters, and normal event counting implicitly depend on a valid domain while summing of domains does not. Split summing domains from the core event counting handling to make their respective dependencies obvious. Signed-off-by: Tony Luck Signed-off-by: Borislav Petkov (AMD) Reviewed-by: Reinette Chatre Link: https://lore.kernel.org/20251217172121.12030-1-tony.luck@intel.com --- include/linux/resctrl.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/resctrl.h b/include/linux/resctrl.h index 5db37c7e89c5..9b9877fb3238 100644 --- a/include/linux/resctrl.h +++ b/include/linux/resctrl.h @@ -517,7 +517,7 @@ void resctrl_offline_cpu(unsigned int cpu); * resctrl_arch_rmid_read() - Read the eventid counter corresponding to rmid * for this resource and domain. * @r: resource that the counter should be read from. - * @d: domain that the counter should be read from. + * @hdr: Header of domain that the counter should be read from. * @closid: closid that matches the rmid. Depending on the architecture, the * counter may match traffic of both @closid and @rmid, or @rmid * only. @@ -538,7 +538,7 @@ void resctrl_offline_cpu(unsigned int cpu); * Return: * 0 on success, or -EIO, -EINVAL etc on error. */ -int resctrl_arch_rmid_read(struct rdt_resource *r, struct rdt_mon_domain *d, +int resctrl_arch_rmid_read(struct rdt_resource *r, struct rdt_domain_hdr *hdr, u32 closid, u32 rmid, enum resctrl_event_id eventid, u64 *val, void *arch_mon_ctx); -- cgit v1.2.3