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Message-Id: <1418226774-30215-6-git-send-email-tj@kernel.org>
Date: Wed, 10 Dec 2014 10:52:47 -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 05/12] tile: use {cpu|node}mask pr_cont and seq output functions
Convert the existing user of cpu{mask|list}_scnprintf() and
node{mask|list}_scnprintf() which use them just to printk or
seq_printf() the resulting buffer to use the following functions
instead respectively.
* For printk: cpu{mask|list}_pr_cont() and node{mask|list}_pr_cont().
* For seq_file: seq_cpumask[_list]() and seq_nodemask[_list]().
Because these conversions usually break up a single output function
call into multiple, the reduction is LOC isn't too big but it removes
unnecessary complexity and/or arbitrary limit on the length printed.
This patch is dependent on the previous patch ("bitmap, cpumask,
nodemask: implement pr_cont variants of formatting functions") which
is planned to go through -mm. It'd be the easiest to route this
together. If this should go through the subsystem tree, please wait
till the forementioned patch is merged to mainline.
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 | 6 ++----
arch/tile/kernel/proc.c | 6 +++---
arch/tile/kernel/setup.c | 12 ++++++------
arch/tile/mm/homecache.c | 14 +++++++-------
arch/tile/mm/init.c | 12 ++++++------
drivers/net/ethernet/tile/tilegx.c | 6 +++---
drivers/net/ethernet/tile/tilepro.c | 6 +++---
7 files changed, 30 insertions(+), 32 deletions(-)
diff --git a/arch/tile/kernel/hardwall.c b/arch/tile/kernel/hardwall.c
index c4646bb..f8b8453 100644
--- a/arch/tile/kernel/hardwall.c
+++ b/arch/tile/kernel/hardwall.c
@@ -909,11 +909,9 @@ 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_cpumask_list(sf, &info->cpumask);
+ seq_putc(sf, '\n');
return 0;
}
diff --git a/arch/tile/kernel/proc.c b/arch/tile/kernel/proc.c
index 6829a95..3dbd98a 100644
--- a/arch/tile/kernel/proc.c
+++ b/arch/tile/kernel/proc.c
@@ -45,10 +45,10 @@ 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: ");
+ seq_cpumask_list(m, cpu_online_mask);
+ seq_printf(m, "\n");
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..6532399 100644
--- a/arch/tile/kernel/setup.c
+++ b/arch/tile/kernel/setup.c
@@ -215,12 +215,12 @@ 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 '");
+ nodelist_pr_cont(isolnodes);
+ pr_cont("'\n");
return 0;
}
early_param("isolnodes", setup_isolnodes);
@@ -1316,9 +1316,9 @@ 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);
+ pr_info("CPUs not available for Linux: ");
+ cpulist_pr_cont(&disabled_map);
+ pr_cont("\n");
}
}
diff --git a/arch/tile/mm/homecache.c b/arch/tile/mm/homecache.c
index cd33873..a7278fe 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 +148,14 @@ 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 [",
+ cache_pa, cache_control, cache_cpumask);
+ cpumask_pr_cont(&cache_cpumask_copy);
+ pr_cont("], %#lx, %#lx, %#lx, %p [",
+ (unsigned long)tlb_va, tlb_length, tlb_pgsize, tlb_cpumask);
+ cpumask_pr_cont(&tlb_cpumask_copy);
+ pr_cont("], %p, %d) = %d\n", asids, asidcount, rc);
panic("Unsafe to continue.");
}
diff --git a/arch/tile/mm/init.c b/arch/tile/mm/init.c
index be240cc..8e6dea3 100644
--- a/arch/tile/mm/init.c
+++ b/arch/tile/mm/init.c
@@ -353,15 +353,15 @@ 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 ");
+ cpulist_pr_cont(&ktext_mask);
+ pr_cont(" with small pages\n");
} else {
- pr_info("ktext: caching on cpu %s with one huge page\n",
- buf);
+ pr_info("ktext: caching on cpu ");
+ cpulist_pr_cont(&ktext_mask);
+ pr_cont(" with one huge page\n");
}
}
diff --git a/drivers/net/ethernet/tile/tilegx.c b/drivers/net/ethernet/tile/tilegx.c
index 049747f..3ecb8b2 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 +313,9 @@ 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: ");
+ cpulist_pr_cont(&network_cpus_map);
+ pr_cont("\n");
return true;
}
diff --git a/drivers/net/ethernet/tile/tilepro.c b/drivers/net/ethernet/tile/tilepro.c
index fb12d31..ab9bfbf 100644
--- a/drivers/net/ethernet/tile/tilepro.c
+++ b/drivers/net/ethernet/tile/tilepro.c
@@ -2410,9 +2410,9 @@ 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: ");
+ cpulist_pr_cont(&network_cpus_map);
+ pr_cont("\n");
network_cpus_used = true;
}
}
--
2.1.0
--
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