[PATCH 0/7] Convert sprintf_symbol uses to %p[Ss]

[PATCH 0/7] Convert sprintf_symbol uses to %p[Ss]

[Joe Perches]

Remove unnecessary declarations of temporary buffers.
Use %pS or %ps as appropriate.
Minor reformatting in a couple of places.

Compiled, but otherwise untested.

Joe Perches (7):
  arch/arm/kernel/traps.c: Convert sprintf_symbol to %pS
  arch/x86/kernel/pci-iommu_table.c: Convert sprintf_symbol to %pS
  fs/gfs2/glock.c: Convert sprintf_symbol to %pS
  fs/proc/base.c kernel/latencytop.c: Convert sprintf_symbol to %ps
  kernel/lockdep_proc.c: Convert sprintf_symbol to %pS
  mm: Convert sprintf_symbol to %pS
  net/sunrpc/clnt.c: Convert sprintf_symbol to %ps

 arch/arm/kernel/traps.c           |    5 +----
 arch/x86/kernel/pci-iommu_table.c |   18 ++++--------------
 fs/gfs2/glock.c                   |   15 +++++++--------
 fs/proc/base.c                    |   22 ++++++++--------------
 kernel/latencytop.c               |   23 +++++++++--------------
 kernel/lockdep_proc.c             |   16 ++++++----------
 mm/slub.c                         |   11 ++++-------
 mm/vmalloc.c                      |    9 ++-------
 net/sunrpc/clnt.c                 |   12 ++----------
 9 files changed, 43 insertions(+), 88 deletions(-)

-- 
1.7.3.2.146.gca209

[PATCH 1/7] arch/arm/kernel/traps.c: Convert sprintf_symbol to %pS

[Joe Perches]

Signed-off-by: Joe Perches <joe@perches.com>
---
 arch/arm/kernel/traps.c |    5 +----
 1 files changed, 1 insertions(+), 4 deletions(-)

diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index cda78d5..446aee9 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -53,10 +53,7 @@ static void dump_mem(const char *, const char *, unsigned long, unsigned long);
 void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long frame)
 {
 #ifdef CONFIG_KALLSYMS
-	char sym1[KSYM_SYMBOL_LEN], sym2[KSYM_SYMBOL_LEN];
-	sprint_symbol(sym1, where);
-	sprint_symbol(sym2, from);
-	printk("[<%08lx>] (%s) from [<%08lx>] (%s)\n", where, sym1, from, sym2);
+	printk("[<%08lx>] (%pS) from [<%08lx>] (%pS)\n", where, (void *)where, from, (void *)from);
 #else
 	printk("Function entered at [<%08lx>] from [<%08lx>]\n", where, from);
 #endif
-- 
1.7.3.2.146.gca209

[PATCH 2/7] arch/x86/kernel/pci-iommu_table.c: Convert sprintf_symbol to %pS

[Joe Perches]

Coalesce format as well.

Signed-off-by: Joe Perches <joe@perches.com>
---
 arch/x86/kernel/pci-iommu_table.c |   18 ++++--------------
 1 files changed, 4 insertions(+), 14 deletions(-)

diff --git a/arch/x86/kernel/pci-iommu_table.c b/arch/x86/kernel/pci-iommu_table.c
index 55d745e..35ccf75 100644
--- a/arch/x86/kernel/pci-iommu_table.c
+++ b/arch/x86/kernel/pci-iommu_table.c
@@ -50,20 +50,14 @@ void __init check_iommu_entries(struct iommu_table_entry *start,
 				struct iommu_table_entry *finish)
 {
 	struct iommu_table_entry *p, *q, *x;
-	char sym_p[KSYM_SYMBOL_LEN];
-	char sym_q[KSYM_SYMBOL_LEN];
 
 	/* Simple cyclic dependency checker. */
 	for (p = start; p < finish; p++) {
 		q = find_dependents_of(start, finish, p);
 		x = find_dependents_of(start, finish, q);
 		if (p == x) {
-			sprint_symbol(sym_p, (unsigned long)p->detect);
-			sprint_symbol(sym_q, (unsigned long)q->detect);
-
-			printk(KERN_ERR "CYCLIC DEPENDENCY FOUND! %s depends" \
-					" on %s and vice-versa. BREAKING IT.\n",
-					sym_p, sym_q);
+			printk(KERN_ERR "CYCLIC DEPENDENCY FOUND! %pS depends on %pS and vice-versa. BREAKING IT.\n",
+			       p->detect, q->detect);
 			/* Heavy handed way..*/
 			x->depend = 0;
 		}
@@ -72,12 +66,8 @@ void __init check_iommu_entries(struct iommu_table_entry *start,
 	for (p = start; p < finish; p++) {
 		q = find_dependents_of(p, finish, p);
 		if (q && q > p) {
-			sprint_symbol(sym_p, (unsigned long)p->detect);
-			sprint_symbol(sym_q, (unsigned long)q->detect);
-
-			printk(KERN_ERR "EXECUTION ORDER INVALID! %s "\
-					"should be called before %s!\n",
-					sym_p, sym_q);
+			printk(KERN_ERR "EXECUTION ORDER INVALID! %pS should be called before %pS!\n",
+			       p->detect, q->detect);
 		}
 	}
 }
-- 
1.7.3.2.146.gca209

[PATCH 3/7] fs/gfs2/glock.c: Convert sprintf_symbol to %pS

[Joe Perches]

Signed-off-by: Joe Perches <joe@perches.com>
---
 fs/gfs2/glock.c |   15 +++++++--------
 1 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index 8777885..08dd4a2 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -1627,18 +1627,17 @@ static const char *hflags2str(char *buf, unsigned flags, unsigned long iflags)
 static int dump_holder(struct seq_file *seq, const struct gfs2_holder *gh)
 {
 	struct task_struct *gh_owner = NULL;
-	char buffer[KSYM_SYMBOL_LEN];
 	char flags_buf[32];
 
-	sprint_symbol(buffer, gh->gh_ip);
 	if (gh->gh_owner_pid)
 		gh_owner = pid_task(gh->gh_owner_pid, PIDTYPE_PID);
-	gfs2_print_dbg(seq, " H: s:%s f:%s e:%d p:%ld [%s] %s\n",
-		  state2str(gh->gh_state),
-		  hflags2str(flags_buf, gh->gh_flags, gh->gh_iflags),
-		  gh->gh_error, 
-		  gh->gh_owner_pid ? (long)pid_nr(gh->gh_owner_pid) : -1,
-		  gh_owner ? gh_owner->comm : "(ended)", buffer);
+	gfs2_print_dbg(seq, " H: s:%s f:%s e:%d p:%ld [%s] %pS\n",
+		       state2str(gh->gh_state),
+		       hflags2str(flags_buf, gh->gh_flags, gh->gh_iflags),
+		       gh->gh_error,
+		       gh->gh_owner_pid ? (long)pid_nr(gh->gh_owner_pid) : -1,
+		       gh_owner ? gh_owner->comm : "(ended)",
+		       (void *)gh->gh_ip);
 	return 0;
 }
 
-- 
1.7.3.2.146.gca209

[PATCH 4/7] fs/proc/base.c kernel/latencytop.c: Convert sprintf_symbol to %ps

[Joe Perches]

Use temporary lr for struct latency_record for improved readability
and fewer columns used.  Removed trailing space from output.

Signed-off-by: Joe Perches <joe@perches.com>
---
 fs/proc/base.c      |   22 ++++++++--------------
 kernel/latencytop.c |   23 +++++++++--------------
 2 files changed, 17 insertions(+), 28 deletions(-)

diff --git a/fs/proc/base.c b/fs/proc/base.c
index f3d02ca..1e0cbf4 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -373,24 +373,18 @@ static int lstats_show_proc(struct seq_file *m, void *v)
 		return -ESRCH;
 	seq_puts(m, "Latency Top version : v0.1\n");
 	for (i = 0; i < 32; i++) {
-		if (task->latency_record[i].backtrace[0]) {
+		struct latency_record *lr = &task->latency_record[i];
+		if (lr->backtrace[0]) {
 			int q;
-			seq_printf(m, "%i %li %li ",
-				task->latency_record[i].count,
-				task->latency_record[i].time,
-				task->latency_record[i].max);
+			seq_printf(m, "%i %li %li",
+				   lr->count, lr->time, lr->max);
 			for (q = 0; q < LT_BACKTRACEDEPTH; q++) {
-				char sym[KSYM_SYMBOL_LEN];
-				char *c;
-				if (!task->latency_record[i].backtrace[q])
+				unsigned long bt = lr->backtrace[q]; 
+				if (!bt)
 					break;
-				if (task->latency_record[i].backtrace[q] == ULONG_MAX)
+				if (bt == ULONG_MAX)
 					break;
-				sprint_symbol(sym, task->latency_record[i].backtrace[q]);
-				c = strchr(sym, '+');
-				if (c)
-					*c = 0;
-				seq_printf(m, "%s ", sym);
+				seq_printf(m, " %ps", (void *)bt);
 			}
 			seq_printf(m, "\n");
 		}
diff --git a/kernel/latencytop.c b/kernel/latencytop.c
index 877fb30..7cbbf5c 100644
--- a/kernel/latencytop.c
+++ b/kernel/latencytop.c
@@ -242,24 +242,19 @@ static int lstats_show(struct seq_file *m, void *v)
 	seq_puts(m, "Latency Top version : v0.1\n");
 
 	for (i = 0; i < MAXLR; i++) {
-		if (latency_record[i].backtrace[0]) {
+		struct latency_record *lr = &latency_record[i];
+
+		if (lr->backtrace[0]) {
 			int q;
-			seq_printf(m, "%i %lu %lu ",
-				latency_record[i].count,
-				latency_record[i].time,
-				latency_record[i].max);
+			seq_printf(m, "%i %lu %lu",
+				   lr->count, lr->time, lr->max);
 			for (q = 0; q < LT_BACKTRACEDEPTH; q++) {
-				char sym[KSYM_SYMBOL_LEN];
-				char *c;
-				if (!latency_record[i].backtrace[q])
+				unsigned long bt = lr->backtrace[q]; 
+				if (!bt)
 					break;
-				if (latency_record[i].backtrace[q] == ULONG_MAX)
+				if (bt == ULONG_MAX)
 					break;
-				sprint_symbol(sym, latency_record[i].backtrace[q]);
-				c = strchr(sym, '+');
-				if (c)
-					*c = 0;
-				seq_printf(m, "%s ", sym);
+				seq_printf(m, " %ps", (void *)bt);
 			}
 			seq_printf(m, "\n");
 		}
-- 
1.7.3.2.146.gca209

[PATCH 5/7] kernel/lockdep_proc.c: Convert sprintf_symbol to %pS

[Joe Perches]

Signed-off-by: Joe Perches <joe@perches.com>
---
 kernel/lockdep_proc.c |   16 ++++++----------
 1 files changed, 6 insertions(+), 10 deletions(-)

diff --git a/kernel/lockdep_proc.c b/kernel/lockdep_proc.c
index 59b76c8..1969d2f 100644
--- a/kernel/lockdep_proc.c
+++ b/kernel/lockdep_proc.c
@@ -494,7 +494,6 @@ static void seq_stats(struct seq_file *m, struct lock_stat_data *data)
 		namelen += 2;
 
 	for (i = 0; i < LOCKSTAT_POINTS; i++) {
-		char sym[KSYM_SYMBOL_LEN];
 		char ip[32];
 
 		if (class->contention_point[i] == 0)
@@ -503,15 +502,13 @@ static void seq_stats(struct seq_file *m, struct lock_stat_data *data)
 		if (!i)
 			seq_line(m, '-', 40-namelen, namelen);
 
-		sprint_symbol(sym, class->contention_point[i]);
 		snprintf(ip, sizeof(ip), "[<%p>]",
 				(void *)class->contention_point[i]);
-		seq_printf(m, "%40s %14lu %29s %s\n", name,
-				stats->contention_point[i],
-				ip, sym);
+		seq_printf(m, "%40s %14lu %29s %pS\n",
+			   name, stats->contention_point[i],
+			   ip, (void *)class->contention_point[i]);
 	}
 	for (i = 0; i < LOCKSTAT_POINTS; i++) {
-		char sym[KSYM_SYMBOL_LEN];
 		char ip[32];
 
 		if (class->contending_point[i] == 0)
@@ -520,12 +517,11 @@ static void seq_stats(struct seq_file *m, struct lock_stat_data *data)
 		if (!i)
 			seq_line(m, '-', 40-namelen, namelen);
 
-		sprint_symbol(sym, class->contending_point[i]);
 		snprintf(ip, sizeof(ip), "[<%p>]",
 				(void *)class->contending_point[i]);
-		seq_printf(m, "%40s %14lu %29s %s\n", name,
-				stats->contending_point[i],
-				ip, sym);
+		seq_printf(m, "%40s %14lu %29s %pS\n",
+			   name, stats->contending_point[i],
+			   ip, (void *)class->contending_point[i]);
 	}
 	if (i) {
 		seq_puts(m, "\n");
-- 
1.7.3.2.146.gca209

[PATCH 6/7] mm: Convert sprintf_symbol to %pS

[Joe Perches]

Signed-off-by: Joe Perches <joe@perches.com>
---
 mm/slub.c    |   11 ++++-------
 mm/vmalloc.c |    9 ++-------
 2 files changed, 6 insertions(+), 14 deletions(-)

diff --git a/mm/slub.c b/mm/slub.c
index 8fd5401..43b3857 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -3660,7 +3660,7 @@ static int list_locations(struct kmem_cache *s, char *buf,
 		len += sprintf(buf + len, "%7ld ", l->count);
 
 		if (l->addr)
-			len += sprint_symbol(buf + len, (unsigned long)l->addr);
+			len += sprintf(buf + len, "%pS", (void *)l->addr);
 		else
 			len += sprintf(buf + len, "<not-available>");
 
@@ -3969,12 +3969,9 @@ SLAB_ATTR(min_partial);
 
 static ssize_t ctor_show(struct kmem_cache *s, char *buf)
 {
-	if (s->ctor) {
-		int n = sprint_symbol(buf, (unsigned long)s->ctor);
-
-		return n + sprintf(buf + n, "\n");
-	}
-	return 0;
+	if (!s->ctor)
+		return 0;
+	return sprintf(buf, "%pS\n", s->ctor);
 }
 SLAB_ATTR_RO(ctor);
 
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index a3d66b3..b7e18f6 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -2450,13 +2450,8 @@ static int s_show(struct seq_file *m, void *p)
 	seq_printf(m, "0x%p-0x%p %7ld",
 		v->addr, v->addr + v->size, v->size);
 
-	if (v->caller) {
-		char buff[KSYM_SYMBOL_LEN];
-
-		seq_putc(m, ' ');
-		sprint_symbol(buff, (unsigned long)v->caller);
-		seq_puts(m, buff);
-	}
+	if (v->caller)
+		seq_printf(m, " %pS", v->caller);
 
 	if (v->nr_pages)
 		seq_printf(m, " pages=%d", v->nr_pages);
-- 
1.7.3.2.146.gca209

[PATCH 7/7] net/sunrpc/clnt.c: Convert sprintf_symbol to %ps

[Joe Perches]

Signed-off-by: Joe Perches <joe@perches.com>
---
 net/sunrpc/clnt.c |   12 ++----------
 1 files changed, 2 insertions(+), 10 deletions(-)

diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 9dab957..0c3d395 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -1824,23 +1824,15 @@ static void rpc_show_task(const struct rpc_clnt *clnt,
 			  const struct rpc_task *task)
 {
 	const char *rpc_waitq = "none";
-	char *p, action[KSYM_SYMBOL_LEN];
 
 	if (RPC_IS_QUEUED(task))
 		rpc_waitq = rpc_qname(task->tk_waitqueue);
 
-	/* map tk_action pointer to a function name; then trim off
-	 * the "+0x0 [sunrpc]" */
-	sprint_symbol(action, (unsigned long)task->tk_action);
-	p = strchr(action, '+');
-	if (p)
-		*p = '\0';
-
-	printk(KERN_INFO "%5u %04x %6d %8p %8p %8ld %8p %sv%u %s a:%s q:%s\n",
+	printk(KERN_INFO "%5u %04x %6d %8p %8p %8ld %8p %sv%u %s a:%ps q:%s\n",
 		task->tk_pid, task->tk_flags, task->tk_status,
 		clnt, task->tk_rqstp, task->tk_timeout, task->tk_ops,
 		clnt->cl_protname, clnt->cl_vers, rpc_proc_name(task),
-		action, rpc_waitq);
+		task->tk_action, rpc_waitq);
 }
 
 void rpc_show_tasks(void)
-- 
1.7.3.2.146.gca209

Re: [PATCH 6/7] mm: Convert sprintf_symbol to %pS

[Pekka Enberg]

On 6.11.2010 1.12, Joe Perches wrote:
> Signed-off-by: Joe Perches<joe@perches.com>

Acked-by: Pekka Enberg <penberg@kernel.org>

I think this ought to go through Andrew's tree rather than the trivial tree.

> ---
>   mm/slub.c    |   11 ++++-------
>   mm/vmalloc.c |    9 ++-------
>   2 files changed, 6 insertions(+), 14 deletions(-)
>
> diff --git a/mm/slub.c b/mm/slub.c
> index 8fd5401..43b3857 100644
> --- a/mm/slub.c
> +++ b/mm/slub.c
> @@ -3660,7 +3660,7 @@ static int list_locations(struct kmem_cache *s, char *buf,
>   		len += sprintf(buf + len, "%7ld ", l->count);
>
>   		if (l->addr)
> -			len += sprint_symbol(buf + len, (unsigned long)l->addr);
> +			len += sprintf(buf + len, "%pS", (void *)l->addr);
>   		else
>   			len += sprintf(buf + len, "<not-available>");
>
> @@ -3969,12 +3969,9 @@ SLAB_ATTR(min_partial);
>
>   static ssize_t ctor_show(struct kmem_cache *s, char *buf)
>   {
> -	if (s->ctor) {
> -		int n = sprint_symbol(buf, (unsigned long)s->ctor);
> -
> -		return n + sprintf(buf + n, "\n");
> -	}
> -	return 0;
> +	if (!s->ctor)
> +		return 0;
> +	return sprintf(buf, "%pS\n", s->ctor);
>   }
>   SLAB_ATTR_RO(ctor);
>
> diff --git a/mm/vmalloc.c b/mm/vmalloc.c
> index a3d66b3..b7e18f6 100644
> --- a/mm/vmalloc.c
> +++ b/mm/vmalloc.c
> @@ -2450,13 +2450,8 @@ static int s_show(struct seq_file *m, void *p)
>   	seq_printf(m, "0x%p-0x%p %7ld",
>   		v->addr, v->addr + v->size, v->size);
>
> -	if (v->caller) {
> -		char buff[KSYM_SYMBOL_LEN];
> -
> -		seq_putc(m, ' ');
> -		sprint_symbol(buff, (unsigned long)v->caller);
> -		seq_puts(m, buff);
> -	}
> +	if (v->caller)
> +		seq_printf(m, " %pS", v->caller);
>
>   	if (v->nr_pages)
>   		seq_printf(m, " pages=%d", v->nr_pages);

Re: [PATCH 3/7] fs/gfs2/glock.c: Convert sprintf_symbol to %pS

[Steven Whitehouse]

Hi,

On Fri, 2010-11-05 at 16:12 -0700, Joe Perches wrote:
> Signed-off-by: Joe Perches <joe@perches.com>
> ---
Seems like a good idea:
Acked-by: Steven Whitehouse <swhiteho@redhat.com>

Steve.

>  fs/gfs2/glock.c |   15 +++++++--------
>  1 files changed, 7 insertions(+), 8 deletions(-)
> 
> diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
> index 8777885..08dd4a2 100644
> --- a/fs/gfs2/glock.c
> +++ b/fs/gfs2/glock.c
> @@ -1627,18 +1627,17 @@ static const char *hflags2str(char *buf, unsigned flags, unsigned long iflags)
>  static int dump_holder(struct seq_file *seq, const struct gfs2_holder *gh)
>  {
>  	struct task_struct *gh_owner = NULL;
> -	char buffer[KSYM_SYMBOL_LEN];
>  	char flags_buf[32];
>  
> -	sprint_symbol(buffer, gh->gh_ip);
>  	if (gh->gh_owner_pid)
>  		gh_owner = pid_task(gh->gh_owner_pid, PIDTYPE_PID);
> -	gfs2_print_dbg(seq, " H: s:%s f:%s e:%d p:%ld [%s] %s\n",
> -		  state2str(gh->gh_state),
> -		  hflags2str(flags_buf, gh->gh_flags, gh->gh_iflags),
> -		  gh->gh_error, 
> -		  gh->gh_owner_pid ? (long)pid_nr(gh->gh_owner_pid) : -1,
> -		  gh_owner ? gh_owner->comm : "(ended)", buffer);
> +	gfs2_print_dbg(seq, " H: s:%s f:%s e:%d p:%ld [%s] %pS\n",
> +		       state2str(gh->gh_state),
> +		       hflags2str(flags_buf, gh->gh_flags, gh->gh_iflags),
> +		       gh->gh_error,
> +		       gh->gh_owner_pid ? (long)pid_nr(gh->gh_owner_pid) : -1,
> +		       gh_owner ? gh_owner->comm : "(ended)",
> +		       (void *)gh->gh_ip);
>  	return 0;
>  }
>  

Re: [PATCH 2/7] arch/x86/kernel/pci-iommu_table.c: Convert sprintf_symbol to %pS

[Joerg Roedel]

On Fri, Nov 05, 2010 at 04:12:35PM -0700, Joe Perches wrote:
> Coalesce format as well.
> 
> Signed-off-by: Joe Perches <joe@perches.com>

Applied, thanks.