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Message-Id: <1422108218-25398-9-git-send-email-tj@kernel.org>
Date: Sat, 24 Jan 2015 09:03:14 -0500
From: Tejun Heo <tj@...nel.org>
To: akpm@...ux-foundation.org
Cc: linux-kernel@...r.kernel.org, Tejun Heo <tj@...nel.org>,
Chris Metcalf <cmetcalf@...era.com>
Subject: [PATCH 08/32] tile: use %*pb[l] to print bitmaps including cpumasks and nodemasks
printk and friends can now formap bitmaps using '%*pb[l]'. cpumask
and nodemask also provide cpumask_pr_args() and nodemask_pr_args()
respectively which can be used to generate the two printf arguments
necessary to format the specified cpu/nodemask.
This patch is dependent on the following two patches.
lib/vsprintf: implement bitmap printing through '%*pb[l]'
cpumask, nodemask: implement cpumask/nodemask_pr_args()
Please wait till the forementioned patches are merged to mainline
before applying to subsystem trees.
Signed-off-by: Tejun Heo <tj@...nel.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Chris Metcalf <cmetcalf@...era.com>
---
arch/tile/kernel/hardwall.c | 5 +----
arch/tile/kernel/proc.c | 5 ++---
arch/tile/kernel/setup.c | 13 +++++--------
arch/tile/mm/homecache.c | 12 +++++-------
arch/tile/mm/init.c | 18 +++++++-----------
drivers/net/ethernet/tile/tilegx.c | 5 ++---
drivers/net/ethernet/tile/tilepro.c | 5 ++---
7 files changed, 24 insertions(+), 39 deletions(-)
diff --git a/arch/tile/kernel/hardwall.c b/arch/tile/kernel/hardwall.c
index c4646bb..2fd1694 100644
--- a/arch/tile/kernel/hardwall.c
+++ b/arch/tile/kernel/hardwall.c
@@ -909,11 +909,8 @@ static void hardwall_destroy(struct hardwall_info *info)
static int hardwall_proc_show(struct seq_file *sf, void *v)
{
struct hardwall_info *info = sf->private;
- char buf[256];
- int rc = cpulist_scnprintf(buf, sizeof(buf), &info->cpumask);
- buf[rc++] = '\n';
- seq_write(sf, buf, rc);
+ seq_printf(sf, "%*pbl\n", cpumask_pr_args(&info->cpumask));
return 0;
}
diff --git a/arch/tile/kernel/proc.c b/arch/tile/kernel/proc.c
index 6829a95..7983e98 100644
--- a/arch/tile/kernel/proc.c
+++ b/arch/tile/kernel/proc.c
@@ -45,10 +45,9 @@ static int show_cpuinfo(struct seq_file *m, void *v)
int n = ptr_to_cpu(v);
if (n == 0) {
- char buf[NR_CPUS*5];
- cpulist_scnprintf(buf, sizeof(buf), cpu_online_mask);
seq_printf(m, "cpu count\t: %d\n", num_online_cpus());
- seq_printf(m, "cpu list\t: %s\n", buf);
+ seq_printf(m, "cpu list\t: %*pbl\n",
+ cpumask_pr_args(cpu_online_mask));
seq_printf(m, "model name\t: %s\n", chip_model);
seq_printf(m, "flags\t\t:\n"); /* nothing for now */
seq_printf(m, "cpu MHz\t\t: %llu.%06llu\n",
diff --git a/arch/tile/kernel/setup.c b/arch/tile/kernel/setup.c
index 864eea6..f1f5799 100644
--- a/arch/tile/kernel/setup.c
+++ b/arch/tile/kernel/setup.c
@@ -215,12 +215,11 @@ early_param("mem", setup_mem); /* compatibility with x86 */
static int __init setup_isolnodes(char *str)
{
- char buf[MAX_NUMNODES * 5];
if (str == NULL || nodelist_parse(str, isolnodes) != 0)
return -EINVAL;
- nodelist_scnprintf(buf, sizeof(buf), isolnodes);
- pr_info("Set isolnodes value to '%s'\n", buf);
+ pr_info("Set isolnodes value to '%*pbl'\n",
+ nodemask_pr_args(&isolnodes));
return 0;
}
early_param("isolnodes", setup_isolnodes);
@@ -1315,11 +1314,9 @@ early_param("disabled_cpus", disabled_cpus);
void __init print_disabled_cpus(void)
{
- if (!cpumask_empty(&disabled_map)) {
- char buf[100];
- cpulist_scnprintf(buf, sizeof(buf), &disabled_map);
- pr_info("CPUs not available for Linux: %s\n", buf);
- }
+ if (!cpumask_empty(&disabled_map))
+ pr_info("CPUs not available for Linux: %*pbl\n",
+ cpumask_pr_args(&disabled_map));
}
static void __init setup_cpu_maps(void)
diff --git a/arch/tile/mm/homecache.c b/arch/tile/mm/homecache.c
index cd33873..b9e127b 100644
--- a/arch/tile/mm/homecache.c
+++ b/arch/tile/mm/homecache.c
@@ -115,7 +115,6 @@ void flush_remote(unsigned long cache_pfn, unsigned long cache_control,
struct cpumask cache_cpumask_copy, tlb_cpumask_copy;
struct cpumask *cache_cpumask, *tlb_cpumask;
HV_PhysAddr cache_pa;
- char cache_buf[NR_CPUS*5], tlb_buf[NR_CPUS*5];
mb(); /* provided just to simplify "magic hypervisor" mode */
@@ -149,13 +148,12 @@ void flush_remote(unsigned long cache_pfn, unsigned long cache_control,
asids, asidcount);
if (rc == 0)
return;
- cpumask_scnprintf(cache_buf, sizeof(cache_buf), &cache_cpumask_copy);
- cpumask_scnprintf(tlb_buf, sizeof(tlb_buf), &tlb_cpumask_copy);
- pr_err("hv_flush_remote(%#llx, %#lx, %p [%s], %#lx, %#lx, %#lx, %p [%s], %p, %d) = %d\n",
- cache_pa, cache_control, cache_cpumask, cache_buf,
- (unsigned long)tlb_va, tlb_length, tlb_pgsize,
- tlb_cpumask, tlb_buf, asids, asidcount, rc);
+ pr_err("hv_flush_remote(%#llx, %#lx, %p [%*pb], %#lx, %#lx, %#lx, %p [%*pb], %p, %d) = %d\n",
+ cache_pa, cache_control, cache_cpumask,
+ cpumask_pr_args(&cache_cpumask_copy),
+ (unsigned long)tlb_va, tlb_length, tlb_pgsize, tlb_cpumask,
+ cpumask_pr_args(&tlb_cpumask_copy), asids, asidcount, rc);
panic("Unsafe to continue.");
}
diff --git a/arch/tile/mm/init.c b/arch/tile/mm/init.c
index be240cc..ace32d7 100644
--- a/arch/tile/mm/init.c
+++ b/arch/tile/mm/init.c
@@ -353,15 +353,13 @@ static int __init setup_ktext(char *str)
/* Neighborhood ktext pages on specified mask */
else if (cpulist_parse(str, &ktext_mask) == 0) {
- char buf[NR_CPUS * 5];
- cpulist_scnprintf(buf, sizeof(buf), &ktext_mask);
if (cpumask_weight(&ktext_mask) > 1) {
ktext_small = 1;
- pr_info("ktext: using caching neighborhood %s with small pages\n",
- buf);
+ pr_info("ktext: using caching neighborhood %*pbl with small pages\n",
+ cpumask_pr_args(&ktext_mask));
} else {
- pr_info("ktext: caching on cpu %s with one huge page\n",
- buf);
+ pr_info("ktext: caching on cpu %*pbl with one huge page\n",
+ cpumask_pr_args(&ktext_mask));
}
}
@@ -492,11 +490,9 @@ static void __init kernel_physical_mapping_init(pgd_t *pgd_base)
struct cpumask bad;
cpumask_andnot(&bad, &ktext_mask, cpu_possible_mask);
cpumask_and(&ktext_mask, &ktext_mask, cpu_possible_mask);
- if (!cpumask_empty(&bad)) {
- char buf[NR_CPUS * 5];
- cpulist_scnprintf(buf, sizeof(buf), &bad);
- pr_info("ktext: not using unavailable cpus %s\n", buf);
- }
+ if (!cpumask_empty(&bad))
+ pr_info("ktext: not using unavailable cpus %*pbl\n",
+ cpumask_pr_args(&bad));
if (cpumask_empty(&ktext_mask)) {
pr_warn("ktext: no valid cpus; caching on %d\n",
smp_processor_id());
diff --git a/drivers/net/ethernet/tile/tilegx.c b/drivers/net/ethernet/tile/tilegx.c
index 049747f..bea8cd2 100644
--- a/drivers/net/ethernet/tile/tilegx.c
+++ b/drivers/net/ethernet/tile/tilegx.c
@@ -292,7 +292,6 @@ static inline int mpipe_instance(struct net_device *dev)
*/
static bool network_cpus_init(void)
{
- char buf[1024];
int rc;
if (network_cpus_string == NULL)
@@ -314,8 +313,8 @@ static bool network_cpus_init(void)
return false;
}
- cpulist_scnprintf(buf, sizeof(buf), &network_cpus_map);
- pr_info("Linux network CPUs: %s\n", buf);
+ pr_info("Linux network CPUs: %*pbl\n",
+ cpumask_pr_args(&network_cpus_map));
return true;
}
diff --git a/drivers/net/ethernet/tile/tilepro.c b/drivers/net/ethernet/tile/tilepro.c
index fb12d31..3d8f60d 100644
--- a/drivers/net/ethernet/tile/tilepro.c
+++ b/drivers/net/ethernet/tile/tilepro.c
@@ -2410,9 +2410,8 @@ static int __init network_cpus_setup(char *str)
if (cpumask_empty(&network_cpus_map)) {
pr_warn("Ignoring network_cpus='%s'\n", str);
} else {
- char buf[1024];
- cpulist_scnprintf(buf, sizeof(buf), &network_cpus_map);
- pr_info("Linux network CPUs: %s\n", buf);
+ pr_info("Linux network CPUs: %*pbl\n",
+ cpumask_pr_args(&network_cpus_map));
network_cpus_used = true;
}
}
--
2.1.0
--
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