From: James Morse <james.morse@arm.com>
To: x86@kernel.org, linux-kernel@vger.kernel.org
Cc: Fenghua Yu <fenghua.yu@intel.com>,
Reinette Chatre <reinette.chatre@intel.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
"H . Peter Anvin" <hpa@zytor.com>,
Babu Moger <Babu.Moger@amd.com>,
James Morse <james.morse@arm.com>
Subject: [PATCH 04/10] x86/resctrl: use container_of() in delayed_work handlers
Date: Fri, 14 Feb 2020 18:23:55 +0000 [thread overview]
Message-ID: <20200214182401.39008-5-james.morse@arm.com> (raw)
In-Reply-To: <20200214182401.39008-1-james.morse@arm.com>
mbm_handle_overflow() and cqm_handle_limbo() are both provided with
the domain's work_struct when called, but use get_domain_from_cpu()
to find the domain, along with the appropriate error handling.
container_of() saves some list walking and bitmap testing, use that
instead.
Signed-off-by: James Morse <james.morse@arm.com>
---
arch/x86/kernel/cpu/resctrl/monitor.c | 12 ++----------
1 file changed, 2 insertions(+), 10 deletions(-)
diff --git a/arch/x86/kernel/cpu/resctrl/monitor.c b/arch/x86/kernel/cpu/resctrl/monitor.c
index af549df38ec6..a02a7f886a0a 100644
--- a/arch/x86/kernel/cpu/resctrl/monitor.c
+++ b/arch/x86/kernel/cpu/resctrl/monitor.c
@@ -476,19 +476,13 @@ void cqm_handle_limbo(struct work_struct *work)
mutex_lock(&rdtgroup_mutex);
r = &rdt_resources_all[RDT_RESOURCE_L3];
- d = get_domain_from_cpu(cpu, r);
-
- if (!d) {
- pr_warn_once("Failure to get domain for limbo worker\n");
- goto out_unlock;
- }
+ d = container_of(work, struct rdt_domain, cqm_limbo.work);
__check_limbo(d, false);
if (has_busy_rmid(r, d))
schedule_delayed_work_on(cpu, &d->cqm_limbo, delay);
-out_unlock:
mutex_unlock(&rdtgroup_mutex);
}
@@ -516,9 +510,7 @@ void mbm_handle_overflow(struct work_struct *work)
if (!static_branch_likely(&rdt_mon_enable_key))
goto out_unlock;
- d = get_domain_from_cpu(cpu, &rdt_resources_all[RDT_RESOURCE_L3]);
- if (!d)
- goto out_unlock;
+ d = container_of(work, struct rdt_domain, mbm_over.work);
list_for_each_entry(prgrp, &rdt_all_groups, rdtgroup_list) {
mbm_update(d, prgrp->mon.rmid);
--
2.24.1
next prev parent reply other threads:[~2020-02-14 18:24 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-14 18:23 [PATCH 00/10] x86/resctrl: Misc cleanup James Morse
2020-02-14 18:23 ` [PATCH 01/10] x86/resctrl: Nothing uses struct mbm_state chunks_bw James Morse
2020-03-16 18:09 ` Reinette Chatre
2020-02-14 18:23 ` [PATCH 02/10] x86/resctrl: Remove max_delay James Morse
2020-03-16 18:11 ` Reinette Chatre
2020-02-14 18:23 ` [PATCH 03/10] x86/resctrl: Fix stale comment James Morse
2020-03-16 18:12 ` Reinette Chatre
2020-02-14 18:23 ` James Morse [this message]
2020-03-16 18:13 ` [PATCH 04/10] x86/resctrl: use container_of() in delayed_work handlers Reinette Chatre
2020-02-14 18:23 ` [PATCH 05/10] x86/resctrl: Include pid.h James Morse
2020-03-16 18:13 ` Reinette Chatre
2020-02-14 18:23 ` [PATCH 06/10] x86/resctrl: Use is_closid_match() in more places James Morse
2020-03-16 18:15 ` Reinette Chatre
2020-02-14 18:23 ` [PATCH 07/10] x86/resctrl: Add arch_needs_linear to explain AMD/Intel MBA difference James Morse
2020-03-16 18:37 ` Reinette Chatre
2020-02-14 18:23 ` [PATCH 08/10] x86/resctrl: Merge AMD/Intel parse_bw() calls James Morse
2020-03-16 18:42 ` Reinette Chatre
2020-02-14 18:24 ` [PATCH 09/10] x86/resctrl: Add arch_has_sparse_bitmaps to explain AMD/Intel CAT difference James Morse
2020-03-16 18:58 ` Reinette Chatre
2020-02-14 18:24 ` [PATCH 10/10] cacheinfo: Move resctrl's get_cache_id() to the cacheinfo header file James Morse
2020-03-16 20:31 ` Reinette Chatre
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