[RFC PATCH 1/7] fs/resctrl: Generalize __l3_mon_event_count for non-L3 resources

[Jinjie Ruan]

__l3_mon_event_count() reads a single monitor domain. The L3 resource
name hardcoded in its domain_header_is_valid() check is the only thing
tying it to the L3 - all other access is through rr->r. Drop the
hardcode in favour of rr->r->rid and rename it to
__mon_event_count_one_domain() so other resources can reuse it.

No functional change.

Signed-off-by: Jinjie Ruan <ruanjinjie@xxxxxxxxxx>
---
 fs/resctrl/monitor.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/resctrl/monitor.c b/fs/resctrl/monitor.c
index 73413cb128ea..f9f4d4486c1b 100644
--- a/fs/resctrl/monitor.c
+++ b/fs/resctrl/monitor.c
@@ -422,7 +422,7 @@ static void mbm_cntr_free(struct rdt_l3_mon_domain *d, int cntr_id)
 	memset(&d->cntr_cfg[cntr_id], 0, sizeof(*d->cntr_cfg));
 }
 
-static int __l3_mon_event_count(struct rdtgroup *rdtgrp, struct rmid_read *rr)
+static int __mon_event_count_one_domain(struct rdtgroup *rdtgrp, struct rmid_read *rr)
 {
 	int cpu = smp_processor_id();
 	u32 closid = rdtgrp->closid;
@@ -432,7 +432,7 @@ static int __l3_mon_event_count(struct rdtgroup *rdtgrp, struct rmid_read *rr)
 	struct mbm_state *m;
 	u64 tval = 0;
 
-	if (!domain_header_is_valid(rr->hdr, RESCTRL_MON_DOMAIN, RDT_RESOURCE_L3)) {
+	if (!domain_header_is_valid(rr->hdr, RESCTRL_MON_DOMAIN, rr->r->rid)) {
 		rr->err = -EIO;
 		return -EINVAL;
 	}
@@ -540,7 +540,7 @@ static int __mon_event_count(struct rdtgroup *rdtgrp, struct rmid_read *rr)
 	case RDT_RESOURCE_L3:
 		WARN_ON_ONCE(rr->evt->any_cpu);
 		if (rr->hdr)
-			return __l3_mon_event_count(rdtgrp, rr);
+			return __mon_event_count_one_domain(rdtgrp, rr);
 		else
 			return __l3_mon_event_count_sum(rdtgrp, rr);
 	case RDT_RESOURCE_PERF_PKG: {
-- 
2.43.0