Commit 934fe05b authored by Alexey Dobriyan's avatar Alexey Dobriyan Committed by Mike Frysinger
Browse files

Blackfin: convert /proc/sram to seq_file 



->read_proc interface is going away, switch to seq_file.

Signed-off-by: default avatarAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: default avatarMike Frysinger <vapier@gentoo.org>
parent 6362ec27

arch/blackfin/mm/sram-alloc.c

+26 −17
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ 
#include <linux/init.h>

#include <linux/poll.h>

#include <linux/proc_fs.h>

#include <linux/seq_file.h>

#include <linux/spinlock.h>

#include <linux/rtc.h>

#include <linux/slab.h>
@@ -764,7 +765,7 @@ EXPORT_SYMBOL(sram_alloc_with_lsl); 
/* Need to keep line of output the same.  Currently, that is 44 bytes

 * (including newline).

 */

static int _sram_proc_read(char *buf, int *len, int count, const char *desc,

static int _sram_proc_show(struct seq_file *m, const char *desc,

		struct sram_piece *pfree_head,

		struct sram_piece *pused_head)

{
@@ -773,13 +774,13 @@ static int _sram_proc_read(char *buf, int *len, int count, const char *desc, 
	if (!pfree_head || !pused_head)

		return -1;



	*len += sprintf(&buf[*len], "--- SRAM %-14s Size   PID State     \n", desc);

	seq_printf(m, "--- SRAM %-14s Size   PID State     \n", desc);



	/* search the relevant memory slot */

	pslot = pused_head->next;



	while (pslot != NULL) {

		*len += sprintf(&buf[*len], "%p-%p %10i %5i %-10s\n",

		seq_printf(m, "%p-%p %10i %5i %-10s\n",

			pslot->paddr, pslot->paddr + pslot->size,

			pslot->size, pslot->pid, "ALLOCATED");
@@ -789,7 +790,7 @@ static int _sram_proc_read(char *buf, int *len, int count, const char *desc, 
	pslot = pfree_head->next;



	while (pslot != NULL) {

		*len += sprintf(&buf[*len], "%p-%p %10i %5i %-10s\n",

		seq_printf(m, "%p-%p %10i %5i %-10s\n",

			pslot->paddr, pslot->paddr + pslot->size,

			pslot->size, pslot->pid, "FREE");
@@ -798,54 +799,62 @@ static int _sram_proc_read(char *buf, int *len, int count, const char *desc, 


	return 0;

}

static int sram_proc_read(char *buf, char **start, off_t offset, int count,

		int *eof, void *data)

static int sram_proc_show(struct seq_file *m, void *v)

{

	int len = 0;

	unsigned int cpu;



	for (cpu = 0; cpu < num_possible_cpus(); ++cpu) {

		if (_sram_proc_read(buf, &len, count, "Scratchpad",

		if (_sram_proc_show(m, "Scratchpad",

			&per_cpu(free_l1_ssram_head, cpu), &per_cpu(used_l1_ssram_head, cpu)))

			goto not_done;

#if L1_DATA_A_LENGTH != 0

		if (_sram_proc_read(buf, &len, count, "L1 Data A",

		if (_sram_proc_show(m, "L1 Data A",

			&per_cpu(free_l1_data_A_sram_head, cpu),

			&per_cpu(used_l1_data_A_sram_head, cpu)))

			goto not_done;

#endif

#if L1_DATA_B_LENGTH != 0

		if (_sram_proc_read(buf, &len, count, "L1 Data B",

		if (_sram_proc_show(m, "L1 Data B",

			&per_cpu(free_l1_data_B_sram_head, cpu),

			&per_cpu(used_l1_data_B_sram_head, cpu)))

			goto not_done;

#endif

#if L1_CODE_LENGTH != 0

		if (_sram_proc_read(buf, &len, count, "L1 Instruction",

		if (_sram_proc_show(m, "L1 Instruction",

			&per_cpu(free_l1_inst_sram_head, cpu),

			&per_cpu(used_l1_inst_sram_head, cpu)))

			goto not_done;

#endif

	}

#if L2_LENGTH != 0

	if (_sram_proc_read(buf, &len, count, "L2", &free_l2_sram_head,

		&used_l2_sram_head))

	if (_sram_proc_show(m, "L2", &free_l2_sram_head, &used_l2_sram_head))

		goto not_done;

#endif

	*eof = 1;

 not_done:

	return len;

	return 0;

}



static int sram_proc_open(struct inode *inode, struct file *file)

{

	return single_open(file, sram_proc_show, NULL);

}



static const struct file_operations sram_proc_ops = {

	.open		= sram_proc_open,

	.read		= seq_read,

	.llseek		= seq_lseek,

	.release	= single_release,

};



static int __init sram_proc_init(void)

{

	struct proc_dir_entry *ptr;

	ptr = create_proc_entry("sram", S_IFREG | S_IRUGO, NULL);



	ptr = proc_create("sram", S_IRUGO, NULL, &sram_proc_ops);

	if (!ptr) {

		printk(KERN_WARNING "unable to create /proc/sram\n");

		return -1;

	}

	ptr->read_proc = sram_proc_read;

	return 0;

}

late_initcall(sram_proc_init);