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Date:   Thu, 22 Nov 2018 13:51:05 -0800
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To:     linux-tip-commits@vger.kernel.org
Subject: [tip:x86/cache] x86/resctrl: Fixup the user-visible strings
Git-Commit-ID: 723f1a0dd8e26a7523ba068204bee11c95ded38d
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Commit-ID:  723f1a0dd8e26a7523ba068204bee11c95ded38d
Gitweb:     https://git.kernel.org/tip/723f1a0dd8e26a7523ba068204bee11c95ded38d
Author:     Babu Moger <Babu.Moger@amd.com>
AuthorDate: Wed, 21 Nov 2018 20:28:43 +0000
Committer:  Borislav Petkov <bp@suse.de>
CommitDate: Thu, 22 Nov 2018 20:16:20 +0100

x86/resctrl: Fixup the user-visible strings

Fix the messages in rdt_last_cmd_printf() and rdt_last_cmd_puts() to
make them more meaningful and consistent.

 [ bp: s/cpu/CPU/; s/mem\W/memory ]

Signed-off-by: Babu Moger <babu.moger@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: "Chang S. Bae" <chang.seok.bae@intel.com>
Cc: David Miller <davem@davemloft.net>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Dmitry Safonov <dima@arista.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jann Horn <jannh@google.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: <linux-doc@vger.kernel.org>
Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Pu Wen <puwen@hygon.cn>
Cc: <qianyue.zj@alibaba-inc.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Reinette Chatre <reinette.chatre@intel.com>
Cc: Rian Hunter <rian@alum.mit.edu>
Cc: Sherry Hurwitz <sherry.hurwitz@amd.com>
Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Thomas Lendacky <Thomas.Lendacky@amd.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: <xiaochen.shen@intel.com>
Link: https://lkml.kernel.org/r/20181121202811.4492-11-babu.moger@amd.com
---
 arch/x86/kernel/cpu/resctrl/ctrlmondata.c | 22 +++++++++----------
 arch/x86/kernel/cpu/resctrl/pseudo_lock.c | 34 ++++++++++++++---------------
 arch/x86/kernel/cpu/resctrl/rdtgroup.c    | 36 +++++++++++++++----------------
 3 files changed, 46 insertions(+), 46 deletions(-)

diff --git a/arch/x86/kernel/cpu/resctrl/ctrlmondata.c b/arch/x86/kernel/cpu/resctrl/ctrlmondata.c
index d2e0b99d453f..bfd7bdf8a156 100644
--- a/arch/x86/kernel/cpu/resctrl/ctrlmondata.c
+++ b/arch/x86/kernel/cpu/resctrl/ctrlmondata.c
@@ -70,7 +70,7 @@ int parse_bw_intel(struct rdt_parse_data *data, struct rdt_resource *r,
 	unsigned long bw_val;
 
 	if (d->have_new_ctrl) {
-		rdt_last_cmd_printf("duplicate domain %d\n", d->id);
+		rdt_last_cmd_printf("Duplicate domain %d\n", d->id);
 		return -EINVAL;
 	}
 
@@ -96,12 +96,12 @@ bool cbm_validate_intel(char *buf, u32 *data, struct rdt_resource *r)
 
 	ret = kstrtoul(buf, 16, &val);
 	if (ret) {
-		rdt_last_cmd_printf("non-hex character in mask %s\n", buf);
+		rdt_last_cmd_printf("Non-hex character in the mask %s\n", buf);
 		return false;
 	}
 
 	if (val == 0 || val > r->default_ctrl) {
-		rdt_last_cmd_puts("mask out of range\n");
+		rdt_last_cmd_puts("Mask out of range\n");
 		return false;
 	}
 
@@ -109,12 +109,12 @@ bool cbm_validate_intel(char *buf, u32 *data, struct rdt_resource *r)
 	zero_bit = find_next_zero_bit(&val, cbm_len, first_bit);
 
 	if (find_next_bit(&val, cbm_len, zero_bit) < cbm_len) {
-		rdt_last_cmd_printf("mask %lx has non-consecutive 1-bits\n", val);
+		rdt_last_cmd_printf("The mask %lx has non-consecutive 1-bits\n", val);
 		return false;
 	}
 
 	if ((zero_bit - first_bit) < r->cache.min_cbm_bits) {
-		rdt_last_cmd_printf("Need at least %d bits in mask\n",
+		rdt_last_cmd_printf("Need at least %d bits in the mask\n",
 				    r->cache.min_cbm_bits);
 		return false;
 	}
@@ -134,7 +134,7 @@ int parse_cbm(struct rdt_parse_data *data, struct rdt_resource *r,
 	u32 cbm_val;
 
 	if (d->have_new_ctrl) {
-		rdt_last_cmd_printf("duplicate domain %d\n", d->id);
+		rdt_last_cmd_printf("Duplicate domain %d\n", d->id);
 		return -EINVAL;
 	}
 
@@ -144,7 +144,7 @@ int parse_cbm(struct rdt_parse_data *data, struct rdt_resource *r,
 	 */
 	if (rdtgrp->mode == RDT_MODE_PSEUDO_LOCKSETUP &&
 	    rdtgroup_pseudo_locked_in_hierarchy(d)) {
-		rdt_last_cmd_printf("pseudo-locked region in hierarchy\n");
+		rdt_last_cmd_printf("Pseudo-locked region in hierarchy\n");
 		return -EINVAL;
 	}
 
@@ -163,14 +163,14 @@ int parse_cbm(struct rdt_parse_data *data, struct rdt_resource *r,
 	 * either is exclusive.
 	 */
 	if (rdtgroup_cbm_overlaps(r, d, cbm_val, rdtgrp->closid, true)) {
-		rdt_last_cmd_printf("overlaps with exclusive group\n");
+		rdt_last_cmd_printf("Overlaps with exclusive group\n");
 		return -EINVAL;
 	}
 
 	if (rdtgroup_cbm_overlaps(r, d, cbm_val, rdtgrp->closid, false)) {
 		if (rdtgrp->mode == RDT_MODE_EXCLUSIVE ||
 		    rdtgrp->mode == RDT_MODE_PSEUDO_LOCKSETUP) {
-			rdt_last_cmd_printf("overlaps with other group\n");
+			rdt_last_cmd_printf("0verlaps with other group\n");
 			return -EINVAL;
 		}
 	}
@@ -292,7 +292,7 @@ static int rdtgroup_parse_resource(char *resname, char *tok,
 		if (!strcmp(resname, r->name) && rdtgrp->closid < r->num_closid)
 			return parse_line(tok, r, rdtgrp);
 	}
-	rdt_last_cmd_printf("unknown/unsupported resource name '%s'\n", resname);
+	rdt_last_cmd_printf("Unknown or unsupported resource name '%s'\n", resname);
 	return -EINVAL;
 }
 
@@ -323,7 +323,7 @@ ssize_t rdtgroup_schemata_write(struct kernfs_open_file *of,
 	 */
 	if (rdtgrp->mode == RDT_MODE_PSEUDO_LOCKED) {
 		ret = -EINVAL;
-		rdt_last_cmd_puts("resource group is pseudo-locked\n");
+		rdt_last_cmd_puts("Resource group is pseudo-locked\n");
 		goto out;
 	}
 
diff --git a/arch/x86/kernel/cpu/resctrl/pseudo_lock.c b/arch/x86/kernel/cpu/resctrl/pseudo_lock.c
index ffb7ebe69d33..14bed6af8377 100644
--- a/arch/x86/kernel/cpu/resctrl/pseudo_lock.c
+++ b/arch/x86/kernel/cpu/resctrl/pseudo_lock.c
@@ -213,7 +213,7 @@ static int pseudo_lock_cstates_constrain(struct pseudo_lock_region *plr)
 	for_each_cpu(cpu, &plr->d->cpu_mask) {
 		pm_req = kzalloc(sizeof(*pm_req), GFP_KERNEL);
 		if (!pm_req) {
-			rdt_last_cmd_puts("fail allocating mem for PM QoS\n");
+			rdt_last_cmd_puts("Failure to allocate memory for PM QoS\n");
 			ret = -ENOMEM;
 			goto out_err;
 		}
@@ -222,7 +222,7 @@ static int pseudo_lock_cstates_constrain(struct pseudo_lock_region *plr)
 					     DEV_PM_QOS_RESUME_LATENCY,
 					     30);
 		if (ret < 0) {
-			rdt_last_cmd_printf("fail to add latency req cpu%d\n",
+			rdt_last_cmd_printf("Failed to add latency req CPU%d\n",
 					    cpu);
 			kfree(pm_req);
 			ret = -1;
@@ -289,7 +289,7 @@ static int pseudo_lock_region_init(struct pseudo_lock_region *plr)
 	plr->cpu = cpumask_first(&plr->d->cpu_mask);
 
 	if (!cpu_online(plr->cpu)) {
-		rdt_last_cmd_printf("cpu %u associated with cache not online\n",
+		rdt_last_cmd_printf("CPU %u associated with cache not online\n",
 				    plr->cpu);
 		ret = -ENODEV;
 		goto out_region;
@@ -307,7 +307,7 @@ static int pseudo_lock_region_init(struct pseudo_lock_region *plr)
 	}
 
 	ret = -1;
-	rdt_last_cmd_puts("unable to determine cache line size\n");
+	rdt_last_cmd_puts("Unable to determine cache line size\n");
 out_region:
 	pseudo_lock_region_clear(plr);
 	return ret;
@@ -361,14 +361,14 @@ static int pseudo_lock_region_alloc(struct pseudo_lock_region *plr)
 	 * KMALLOC_MAX_SIZE.
 	 */
 	if (plr->size > KMALLOC_MAX_SIZE) {
-		rdt_last_cmd_puts("requested region exceeds maximum size\n");
+		rdt_last_cmd_puts("Requested region exceeds maximum size\n");
 		ret = -E2BIG;
 		goto out_region;
 	}
 
 	plr->kmem = kzalloc(plr->size, GFP_KERNEL);
 	if (!plr->kmem) {
-		rdt_last_cmd_puts("unable to allocate memory\n");
+		rdt_last_cmd_puts("Unable to allocate memory\n");
 		ret = -ENOMEM;
 		goto out_region;
 	}
@@ -665,7 +665,7 @@ int rdtgroup_locksetup_enter(struct rdtgroup *rdtgrp)
 	 * default closid associated with it.
 	 */
 	if (rdtgrp == &rdtgroup_default) {
-		rdt_last_cmd_puts("cannot pseudo-lock default group\n");
+		rdt_last_cmd_puts("Cannot pseudo-lock default group\n");
 		return -EINVAL;
 	}
 
@@ -707,17 +707,17 @@ int rdtgroup_locksetup_enter(struct rdtgroup *rdtgrp)
 	 */
 	prefetch_disable_bits = get_prefetch_disable_bits();
 	if (prefetch_disable_bits == 0) {
-		rdt_last_cmd_puts("pseudo-locking not supported\n");
+		rdt_last_cmd_puts("Pseudo-locking not supported\n");
 		return -EINVAL;
 	}
 
 	if (rdtgroup_monitor_in_progress(rdtgrp)) {
-		rdt_last_cmd_puts("monitoring in progress\n");
+		rdt_last_cmd_puts("Monitoring in progress\n");
 		return -EINVAL;
 	}
 
 	if (rdtgroup_tasks_assigned(rdtgrp)) {
-		rdt_last_cmd_puts("tasks assigned to resource group\n");
+		rdt_last_cmd_puts("Tasks assigned to resource group\n");
 		return -EINVAL;
 	}
 
@@ -727,13 +727,13 @@ int rdtgroup_locksetup_enter(struct rdtgroup *rdtgrp)
 	}
 
 	if (rdtgroup_locksetup_user_restrict(rdtgrp)) {
-		rdt_last_cmd_puts("unable to modify resctrl permissions\n");
+		rdt_last_cmd_puts("Unable to modify resctrl permissions\n");
 		return -EIO;
 	}
 
 	ret = pseudo_lock_init(rdtgrp);
 	if (ret) {
-		rdt_last_cmd_puts("unable to init pseudo-lock region\n");
+		rdt_last_cmd_puts("Unable to init pseudo-lock region\n");
 		goto out_release;
 	}
 
@@ -770,7 +770,7 @@ int rdtgroup_locksetup_exit(struct rdtgroup *rdtgrp)
 	if (rdt_mon_capable) {
 		ret = alloc_rmid();
 		if (ret < 0) {
-			rdt_last_cmd_puts("out of RMIDs\n");
+			rdt_last_cmd_puts("Out of RMIDs\n");
 			return ret;
 		}
 		rdtgrp->mon.rmid = ret;
@@ -1304,7 +1304,7 @@ int rdtgroup_pseudo_lock_create(struct rdtgroup *rdtgrp)
 					"pseudo_lock/%u", plr->cpu);
 	if (IS_ERR(thread)) {
 		ret = PTR_ERR(thread);
-		rdt_last_cmd_printf("locking thread returned error %d\n", ret);
+		rdt_last_cmd_printf("Locking thread returned error %d\n", ret);
 		goto out_cstates;
 	}
 
@@ -1322,13 +1322,13 @@ int rdtgroup_pseudo_lock_create(struct rdtgroup *rdtgrp)
 		 * the cleared, but not freed, plr struct resulting in an
 		 * empty pseudo-locking loop.
 		 */
-		rdt_last_cmd_puts("locking thread interrupted\n");
+		rdt_last_cmd_puts("Locking thread interrupted\n");
 		goto out_cstates;
 	}
 
 	ret = pseudo_lock_minor_get(&new_minor);
 	if (ret < 0) {
-		rdt_last_cmd_puts("unable to obtain a new minor number\n");
+		rdt_last_cmd_puts("Unable to obtain a new minor number\n");
 		goto out_cstates;
 	}
 
@@ -1360,7 +1360,7 @@ int rdtgroup_pseudo_lock_create(struct rdtgroup *rdtgrp)
 
 	if (IS_ERR(dev)) {
 		ret = PTR_ERR(dev);
-		rdt_last_cmd_printf("failed to create character device: %d\n",
+		rdt_last_cmd_printf("Failed to create character device: %d\n",
 				    ret);
 		goto out_debugfs;
 	}
diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
index fada488069cb..61b102dd51a5 100644
--- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c
+++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
@@ -345,7 +345,7 @@ static int cpus_mon_write(struct rdtgroup *rdtgrp, cpumask_var_t newmask,
 	/* Check whether cpus belong to parent ctrl group */
 	cpumask_andnot(tmpmask, newmask, &prgrp->cpu_mask);
 	if (cpumask_weight(tmpmask)) {
-		rdt_last_cmd_puts("can only add CPUs to mongroup that belong to parent\n");
+		rdt_last_cmd_puts("Can only add CPUs to mongroup that belong to parent\n");
 		return -EINVAL;
 	}
 
@@ -470,14 +470,14 @@ static ssize_t rdtgroup_cpus_write(struct kernfs_open_file *of,
 	rdt_last_cmd_clear();
 	if (!rdtgrp) {
 		ret = -ENOENT;
-		rdt_last_cmd_puts("directory was removed\n");
+		rdt_last_cmd_puts("Directory was removed\n");
 		goto unlock;
 	}
 
 	if (rdtgrp->mode == RDT_MODE_PSEUDO_LOCKED ||
 	    rdtgrp->mode == RDT_MODE_PSEUDO_LOCKSETUP) {
 		ret = -EINVAL;
-		rdt_last_cmd_puts("pseudo-locking in progress\n");
+		rdt_last_cmd_puts("Pseudo-locking in progress\n");
 		goto unlock;
 	}
 
@@ -487,7 +487,7 @@ static ssize_t rdtgroup_cpus_write(struct kernfs_open_file *of,
 		ret = cpumask_parse(buf, newmask);
 
 	if (ret) {
-		rdt_last_cmd_puts("bad cpu list/mask\n");
+		rdt_last_cmd_puts("Bad CPU list/mask\n");
 		goto unlock;
 	}
 
@@ -495,7 +495,7 @@ static ssize_t rdtgroup_cpus_write(struct kernfs_open_file *of,
 	cpumask_andnot(tmpmask, newmask, cpu_online_mask);
 	if (cpumask_weight(tmpmask)) {
 		ret = -EINVAL;
-		rdt_last_cmd_puts("can only assign online cpus\n");
+		rdt_last_cmd_puts("Can only assign online CPUs\n");
 		goto unlock;
 	}
 
@@ -574,7 +574,7 @@ static int __rdtgroup_move_task(struct task_struct *tsk,
 		 */
 		atomic_dec(&rdtgrp->waitcount);
 		kfree(callback);
-		rdt_last_cmd_puts("task exited\n");
+		rdt_last_cmd_puts("Task exited\n");
 	} else {
 		/*
 		 * For ctrl_mon groups move both closid and rmid.
@@ -692,7 +692,7 @@ static ssize_t rdtgroup_tasks_write(struct kernfs_open_file *of,
 	if (rdtgrp->mode == RDT_MODE_PSEUDO_LOCKED ||
 	    rdtgrp->mode == RDT_MODE_PSEUDO_LOCKSETUP) {
 		ret = -EINVAL;
-		rdt_last_cmd_puts("pseudo-locking in progress\n");
+		rdt_last_cmd_puts("Pseudo-locking in progress\n");
 		goto unlock;
 	}
 
@@ -1158,14 +1158,14 @@ static bool rdtgroup_mode_test_exclusive(struct rdtgroup *rdtgrp)
 		list_for_each_entry(d, &r->domains, list) {
 			if (rdtgroup_cbm_overlaps(r, d, d->ctrl_val[closid],
 						  rdtgrp->closid, false)) {
-				rdt_last_cmd_puts("schemata overlaps\n");
+				rdt_last_cmd_puts("Schemata overlaps\n");
 				return false;
 			}
 		}
 	}
 
 	if (!has_cache) {
-		rdt_last_cmd_puts("cannot be exclusive without CAT/CDP\n");
+		rdt_last_cmd_puts("Cannot be exclusive without CAT/CDP\n");
 		return false;
 	}
 
@@ -1206,7 +1206,7 @@ static ssize_t rdtgroup_mode_write(struct kernfs_open_file *of,
 		goto out;
 
 	if (mode == RDT_MODE_PSEUDO_LOCKED) {
-		rdt_last_cmd_printf("cannot change pseudo-locked group\n");
+		rdt_last_cmd_printf("Cannot change pseudo-locked group\n");
 		ret = -EINVAL;
 		goto out;
 	}
@@ -1235,7 +1235,7 @@ static ssize_t rdtgroup_mode_write(struct kernfs_open_file *of,
 			goto out;
 		rdtgrp->mode = RDT_MODE_PSEUDO_LOCKSETUP;
 	} else {
-		rdt_last_cmd_printf("unknown/unsupported mode\n");
+		rdt_last_cmd_printf("Unknown orunsupported mode\n");
 		ret = -EINVAL;
 	}
 
@@ -2543,7 +2543,7 @@ static int rdtgroup_init_alloc(struct rdtgroup *rdtgrp)
 			tmp_cbm = d->new_ctrl;
 			if (bitmap_weight(&tmp_cbm, r->cache.cbm_len) <
 			    r->cache.min_cbm_bits) {
-				rdt_last_cmd_printf("no space on %s:%d\n",
+				rdt_last_cmd_printf("No space on %s:%d\n",
 						    r->name, d->id);
 				return -ENOSPC;
 			}
@@ -2560,7 +2560,7 @@ static int rdtgroup_init_alloc(struct rdtgroup *rdtgrp)
 			continue;
 		ret = update_domains(r, rdtgrp->closid);
 		if (ret < 0) {
-			rdt_last_cmd_puts("failed to initialize allocations\n");
+			rdt_last_cmd_puts("Failed to initialize allocations\n");
 			return ret;
 		}
 		rdtgrp->mode = RDT_MODE_SHAREABLE;
@@ -2583,7 +2583,7 @@ static int mkdir_rdt_prepare(struct kernfs_node *parent_kn,
 	rdt_last_cmd_clear();
 	if (!prdtgrp) {
 		ret = -ENODEV;
-		rdt_last_cmd_puts("directory was removed\n");
+		rdt_last_cmd_puts("Directory was removed\n");
 		goto out_unlock;
 	}
 
@@ -2591,7 +2591,7 @@ static int mkdir_rdt_prepare(struct kernfs_node *parent_kn,
 	    (prdtgrp->mode == RDT_MODE_PSEUDO_LOCKSETUP ||
 	     prdtgrp->mode == RDT_MODE_PSEUDO_LOCKED)) {
 		ret = -EINVAL;
-		rdt_last_cmd_puts("pseudo-locking in progress\n");
+		rdt_last_cmd_puts("Pseudo-locking in progress\n");
 		goto out_unlock;
 	}
 
@@ -2599,7 +2599,7 @@ static int mkdir_rdt_prepare(struct kernfs_node *parent_kn,
 	rdtgrp = kzalloc(sizeof(*rdtgrp), GFP_KERNEL);
 	if (!rdtgrp) {
 		ret = -ENOSPC;
-		rdt_last_cmd_puts("kernel out of memory\n");
+		rdt_last_cmd_puts("Kernel out of memory\n");
 		goto out_unlock;
 	}
 	*r = rdtgrp;
@@ -2640,7 +2640,7 @@ static int mkdir_rdt_prepare(struct kernfs_node *parent_kn,
 	if (rdt_mon_capable) {
 		ret = alloc_rmid();
 		if (ret < 0) {
-			rdt_last_cmd_puts("out of RMIDs\n");
+			rdt_last_cmd_puts("Out of RMIDs\n");
 			goto out_destroy;
 		}
 		rdtgrp->mon.rmid = ret;
@@ -2728,7 +2728,7 @@ static int rdtgroup_mkdir_ctrl_mon(struct kernfs_node *parent_kn,
 	kn = rdtgrp->kn;
 	ret = closid_alloc();
 	if (ret < 0) {
-		rdt_last_cmd_puts("out of CLOSIDs\n");
+		rdt_last_cmd_puts("Out of CLOSIDs\n");
 		goto out_common_fail;
 	}
 	closid = ret;