/*
- * File: arch/blackfin/mm/sram-alloc.c
- * Based on:
- * Author:
+ * SRAM allocator for Blackfin on-chip memory
*
- * Created:
- * Description: SRAM allocator for Blackfin L1 and L2 memory
+ * Copyright 2004-2009 Analog Devices Inc.
*
- * Modified:
- * Copyright 2004-2008 Analog Devices Inc.
- *
- * Bugs: Enter bugs at http://blackfin.uclinux.org/
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * Licensed under the GPL-2 or later.
*/
#include <linux/module.h>
#include <linux/proc_fs.h>
#include <linux/spinlock.h>
#include <linux/rtc.h>
+#include <linux/slab.h>
#include <asm/blackfin.h>
+#include <asm/mem_map.h>
#include "blackfin_sram.h"
-static spinlock_t l1sram_lock, l1_data_sram_lock, l1_inst_sram_lock;
-static spinlock_t l2_sram_lock;
-
/* the data structure for L1 scratchpad and DATA SRAM */
struct sram_piece {
void *paddr;
struct sram_piece *next;
};
-static struct sram_piece free_l1_ssram_head, used_l1_ssram_head;
+static DEFINE_PER_CPU_SHARED_ALIGNED(spinlock_t, l1sram_lock);
+static DEFINE_PER_CPU(struct sram_piece, free_l1_ssram_head);
+static DEFINE_PER_CPU(struct sram_piece, used_l1_ssram_head);
#if L1_DATA_A_LENGTH != 0
-static struct sram_piece free_l1_data_A_sram_head, used_l1_data_A_sram_head;
+static DEFINE_PER_CPU(struct sram_piece, free_l1_data_A_sram_head);
+static DEFINE_PER_CPU(struct sram_piece, used_l1_data_A_sram_head);
#endif
#if L1_DATA_B_LENGTH != 0
-static struct sram_piece free_l1_data_B_sram_head, used_l1_data_B_sram_head;
+static DEFINE_PER_CPU(struct sram_piece, free_l1_data_B_sram_head);
+static DEFINE_PER_CPU(struct sram_piece, used_l1_data_B_sram_head);
+#endif
+
+#if L1_DATA_A_LENGTH || L1_DATA_B_LENGTH
+static DEFINE_PER_CPU_SHARED_ALIGNED(spinlock_t, l1_data_sram_lock);
#endif
#if L1_CODE_LENGTH != 0
-static struct sram_piece free_l1_inst_sram_head, used_l1_inst_sram_head;
+static DEFINE_PER_CPU_SHARED_ALIGNED(spinlock_t, l1_inst_sram_lock);
+static DEFINE_PER_CPU(struct sram_piece, free_l1_inst_sram_head);
+static DEFINE_PER_CPU(struct sram_piece, used_l1_inst_sram_head);
#endif
#if L2_LENGTH != 0
+static spinlock_t l2_sram_lock ____cacheline_aligned_in_smp;
static struct sram_piece free_l2_sram_head, used_l2_sram_head;
#endif
/* L1 Scratchpad SRAM initialization function */
static void __init l1sram_init(void)
{
- free_l1_ssram_head.next =
- kmem_cache_alloc(sram_piece_cache, GFP_KERNEL);
- if (!free_l1_ssram_head.next) {
- printk(KERN_INFO "Failed to initialize Scratchpad data SRAM\n");
- return;
- }
-
- free_l1_ssram_head.next->paddr = (void *)L1_SCRATCH_START;
- free_l1_ssram_head.next->size = L1_SCRATCH_LENGTH;
- free_l1_ssram_head.next->pid = 0;
- free_l1_ssram_head.next->next = NULL;
-
- used_l1_ssram_head.next = NULL;
+ unsigned int cpu;
+ unsigned long reserve;
- /* mutex initialize */
- spin_lock_init(&l1sram_lock);
+#ifdef CONFIG_SMP
+ reserve = 0;
+#else
+ reserve = sizeof(struct l1_scratch_task_info);
+#endif
- printk(KERN_INFO "Blackfin Scratchpad data SRAM: %d KB\n",
- L1_SCRATCH_LENGTH >> 10);
+ for (cpu = 0; cpu < num_possible_cpus(); ++cpu) {
+ per_cpu(free_l1_ssram_head, cpu).next =
+ kmem_cache_alloc(sram_piece_cache, GFP_KERNEL);
+ if (!per_cpu(free_l1_ssram_head, cpu).next) {
+ printk(KERN_INFO "Fail to initialize Scratchpad data SRAM.\n");
+ return;
+ }
+
+ per_cpu(free_l1_ssram_head, cpu).next->paddr = (void *)get_l1_scratch_start_cpu(cpu) + reserve;
+ per_cpu(free_l1_ssram_head, cpu).next->size = L1_SCRATCH_LENGTH - reserve;
+ per_cpu(free_l1_ssram_head, cpu).next->pid = 0;
+ per_cpu(free_l1_ssram_head, cpu).next->next = NULL;
+
+ per_cpu(used_l1_ssram_head, cpu).next = NULL;
+
+ /* mutex initialize */
+ spin_lock_init(&per_cpu(l1sram_lock, cpu));
+ printk(KERN_INFO "Blackfin Scratchpad data SRAM: %d KB\n",
+ L1_SCRATCH_LENGTH >> 10);
+ }
}
static void __init l1_data_sram_init(void)
{
+#if L1_DATA_A_LENGTH != 0 || L1_DATA_B_LENGTH != 0
+ unsigned int cpu;
+#endif
#if L1_DATA_A_LENGTH != 0
- free_l1_data_A_sram_head.next =
- kmem_cache_alloc(sram_piece_cache, GFP_KERNEL);
- if (!free_l1_data_A_sram_head.next) {
- printk(KERN_INFO "Failed to initialize L1 Data A SRAM\n");
- return;
+ for (cpu = 0; cpu < num_possible_cpus(); ++cpu) {
+ per_cpu(free_l1_data_A_sram_head, cpu).next =
+ kmem_cache_alloc(sram_piece_cache, GFP_KERNEL);
+ if (!per_cpu(free_l1_data_A_sram_head, cpu).next) {
+ printk(KERN_INFO "Fail to initialize L1 Data A SRAM.\n");
+ return;
+ }
+
+ per_cpu(free_l1_data_A_sram_head, cpu).next->paddr =
+ (void *)get_l1_data_a_start_cpu(cpu) + (_ebss_l1 - _sdata_l1);
+ per_cpu(free_l1_data_A_sram_head, cpu).next->size =
+ L1_DATA_A_LENGTH - (_ebss_l1 - _sdata_l1);
+ per_cpu(free_l1_data_A_sram_head, cpu).next->pid = 0;
+ per_cpu(free_l1_data_A_sram_head, cpu).next->next = NULL;
+
+ per_cpu(used_l1_data_A_sram_head, cpu).next = NULL;
+
+ printk(KERN_INFO "Blackfin L1 Data A SRAM: %d KB (%d KB free)\n",
+ L1_DATA_A_LENGTH >> 10,
+ per_cpu(free_l1_data_A_sram_head, cpu).next->size >> 10);
}
-
- free_l1_data_A_sram_head.next->paddr =
- (void *)L1_DATA_A_START + (_ebss_l1 - _sdata_l1);
- free_l1_data_A_sram_head.next->size =
- L1_DATA_A_LENGTH - (_ebss_l1 - _sdata_l1);
- free_l1_data_A_sram_head.next->pid = 0;
- free_l1_data_A_sram_head.next->next = NULL;
-
- used_l1_data_A_sram_head.next = NULL;
-
- printk(KERN_INFO "Blackfin L1 Data A SRAM: %d KB (%d KB free)\n",
- L1_DATA_A_LENGTH >> 10,
- free_l1_data_A_sram_head.next->size >> 10);
#endif
#if L1_DATA_B_LENGTH != 0
- free_l1_data_B_sram_head.next =
- kmem_cache_alloc(sram_piece_cache, GFP_KERNEL);
- if (!free_l1_data_B_sram_head.next) {
- printk(KERN_INFO "Failed to initialize L1 Data B SRAM\n");
- return;
+ for (cpu = 0; cpu < num_possible_cpus(); ++cpu) {
+ per_cpu(free_l1_data_B_sram_head, cpu).next =
+ kmem_cache_alloc(sram_piece_cache, GFP_KERNEL);
+ if (!per_cpu(free_l1_data_B_sram_head, cpu).next) {
+ printk(KERN_INFO "Fail to initialize L1 Data B SRAM.\n");
+ return;
+ }
+
+ per_cpu(free_l1_data_B_sram_head, cpu).next->paddr =
+ (void *)get_l1_data_b_start_cpu(cpu) + (_ebss_b_l1 - _sdata_b_l1);
+ per_cpu(free_l1_data_B_sram_head, cpu).next->size =
+ L1_DATA_B_LENGTH - (_ebss_b_l1 - _sdata_b_l1);
+ per_cpu(free_l1_data_B_sram_head, cpu).next->pid = 0;
+ per_cpu(free_l1_data_B_sram_head, cpu).next->next = NULL;
+
+ per_cpu(used_l1_data_B_sram_head, cpu).next = NULL;
+
+ printk(KERN_INFO "Blackfin L1 Data B SRAM: %d KB (%d KB free)\n",
+ L1_DATA_B_LENGTH >> 10,
+ per_cpu(free_l1_data_B_sram_head, cpu).next->size >> 10);
+ /* mutex initialize */
}
-
- free_l1_data_B_sram_head.next->paddr =
- (void *)L1_DATA_B_START + (_ebss_b_l1 - _sdata_b_l1);
- free_l1_data_B_sram_head.next->size =
- L1_DATA_B_LENGTH - (_ebss_b_l1 - _sdata_b_l1);
- free_l1_data_B_sram_head.next->pid = 0;
- free_l1_data_B_sram_head.next->next = NULL;
-
- used_l1_data_B_sram_head.next = NULL;
-
- printk(KERN_INFO "Blackfin L1 Data B SRAM: %d KB (%d KB free)\n",
- L1_DATA_B_LENGTH >> 10,
- free_l1_data_B_sram_head.next->size >> 10);
#endif
- /* mutex initialize */
- spin_lock_init(&l1_data_sram_lock);
+#if L1_DATA_A_LENGTH != 0 || L1_DATA_B_LENGTH != 0
+ for (cpu = 0; cpu < num_possible_cpus(); ++cpu)
+ spin_lock_init(&per_cpu(l1_data_sram_lock, cpu));
+#endif
}
static void __init l1_inst_sram_init(void)
{
#if L1_CODE_LENGTH != 0
- free_l1_inst_sram_head.next =
- kmem_cache_alloc(sram_piece_cache, GFP_KERNEL);
- if (!free_l1_inst_sram_head.next) {
- printk(KERN_INFO "Failed to initialize L1 Instruction SRAM\n");
- return;
+ unsigned int cpu;
+ for (cpu = 0; cpu < num_possible_cpus(); ++cpu) {
+ per_cpu(free_l1_inst_sram_head, cpu).next =
+ kmem_cache_alloc(sram_piece_cache, GFP_KERNEL);
+ if (!per_cpu(free_l1_inst_sram_head, cpu).next) {
+ printk(KERN_INFO "Failed to initialize L1 Instruction SRAM\n");
+ return;
+ }
+
+ per_cpu(free_l1_inst_sram_head, cpu).next->paddr =
+ (void *)get_l1_code_start_cpu(cpu) + (_etext_l1 - _stext_l1);
+ per_cpu(free_l1_inst_sram_head, cpu).next->size =
+ L1_CODE_LENGTH - (_etext_l1 - _stext_l1);
+ per_cpu(free_l1_inst_sram_head, cpu).next->pid = 0;
+ per_cpu(free_l1_inst_sram_head, cpu).next->next = NULL;
+
+ per_cpu(used_l1_inst_sram_head, cpu).next = NULL;
+
+ printk(KERN_INFO "Blackfin L1 Instruction SRAM: %d KB (%d KB free)\n",
+ L1_CODE_LENGTH >> 10,
+ per_cpu(free_l1_inst_sram_head, cpu).next->size >> 10);
+
+ /* mutex initialize */
+ spin_lock_init(&per_cpu(l1_inst_sram_lock, cpu));
}
-
- free_l1_inst_sram_head.next->paddr =
- (void *)L1_CODE_START + (_etext_l1 - _stext_l1);
- free_l1_inst_sram_head.next->size =
- L1_CODE_LENGTH - (_etext_l1 - _stext_l1);
- free_l1_inst_sram_head.next->pid = 0;
- free_l1_inst_sram_head.next->next = NULL;
-
- used_l1_inst_sram_head.next = NULL;
-
- printk(KERN_INFO "Blackfin L1 Instruction SRAM: %d KB (%d KB free)\n",
- L1_CODE_LENGTH >> 10,
- free_l1_inst_sram_head.next->size >> 10);
#endif
-
- /* mutex initialize */
- spin_lock_init(&l1_inst_sram_lock);
}
static void __init l2_sram_init(void)
free_l2_sram_head.next =
kmem_cache_alloc(sram_piece_cache, GFP_KERNEL);
if (!free_l2_sram_head.next) {
- printk(KERN_INFO "Failed to initialize L2 SRAM\n");
+ printk(KERN_INFO "Fail to initialize L2 SRAM.\n");
return;
}
- free_l2_sram_head.next->paddr = (void *)L2_START +
- (_etext_l2 - _stext_l2) + (_edata_l2 - _sdata_l2);
- free_l2_sram_head.next->size = L2_LENGTH -
- (_etext_l2 - _stext_l2) + (_edata_l2 - _sdata_l2);
+ free_l2_sram_head.next->paddr =
+ (void *)L2_START + (_ebss_l2 - _stext_l2);
+ free_l2_sram_head.next->size =
+ L2_LENGTH - (_ebss_l2 - _stext_l2);
free_l2_sram_head.next->pid = 0;
free_l2_sram_head.next->next = NULL;
printk(KERN_INFO "Blackfin L2 SRAM: %d KB (%d KB free)\n",
L2_LENGTH >> 10,
free_l2_sram_head.next->size >> 10);
-#endif
/* mutex initialize */
spin_lock_init(&l2_sram_lock);
+#endif
}
-void __init bfin_sram_init(void)
+
+static int __init bfin_sram_init(void)
{
sram_piece_cache = kmem_cache_create("sram_piece_cache",
sizeof(struct sram_piece),
l1_data_sram_init();
l1_inst_sram_init();
l2_sram_init();
+
+ return 0;
}
+pure_initcall(bfin_sram_init);
/* SRAM allocate function */
static void *_sram_alloc(size_t size, struct sram_piece *pfree_head,
{
#if L1_CODE_LENGTH != 0
- if (addr >= (void *)L1_CODE_START
- && addr < (void *)(L1_CODE_START + L1_CODE_LENGTH))
+ if (addr >= (void *)get_l1_code_start()
+ && addr < (void *)(get_l1_code_start() + L1_CODE_LENGTH))
return l1_inst_sram_free(addr);
else
#endif
#if L1_DATA_A_LENGTH != 0
- if (addr >= (void *)L1_DATA_A_START
- && addr < (void *)(L1_DATA_A_START + L1_DATA_A_LENGTH))
+ if (addr >= (void *)get_l1_data_a_start()
+ && addr < (void *)(get_l1_data_a_start() + L1_DATA_A_LENGTH))
return l1_data_A_sram_free(addr);
else
#endif
#if L1_DATA_B_LENGTH != 0
- if (addr >= (void *)L1_DATA_B_START
- && addr < (void *)(L1_DATA_B_START + L1_DATA_B_LENGTH))
+ if (addr >= (void *)get_l1_data_b_start()
+ && addr < (void *)(get_l1_data_b_start() + L1_DATA_B_LENGTH))
return l1_data_B_sram_free(addr);
else
#endif
void *l1_data_A_sram_alloc(size_t size)
{
+#if L1_DATA_A_LENGTH != 0
unsigned long flags;
- void *addr = NULL;
+ void *addr;
+ unsigned int cpu;
+ cpu = smp_processor_id();
/* add mutex operation */
- spin_lock_irqsave(&l1_data_sram_lock, flags);
+ spin_lock_irqsave(&per_cpu(l1_data_sram_lock, cpu), flags);
-#if L1_DATA_A_LENGTH != 0
- addr = _sram_alloc(size, &free_l1_data_A_sram_head,
- &used_l1_data_A_sram_head);
-#endif
+ addr = _sram_alloc(size, &per_cpu(free_l1_data_A_sram_head, cpu),
+ &per_cpu(used_l1_data_A_sram_head, cpu));
/* add mutex operation */
- spin_unlock_irqrestore(&l1_data_sram_lock, flags);
+ spin_unlock_irqrestore(&per_cpu(l1_data_sram_lock, cpu), flags);
pr_debug("Allocated address in l1_data_A_sram_alloc is 0x%lx+0x%lx\n",
(long unsigned int)addr, size);
return addr;
+#else
+ return NULL;
+#endif
}
EXPORT_SYMBOL(l1_data_A_sram_alloc);
int l1_data_A_sram_free(const void *addr)
{
+#if L1_DATA_A_LENGTH != 0
unsigned long flags;
int ret;
+ unsigned int cpu;
+ cpu = smp_processor_id();
/* add mutex operation */
- spin_lock_irqsave(&l1_data_sram_lock, flags);
+ spin_lock_irqsave(&per_cpu(l1_data_sram_lock, cpu), flags);
-#if L1_DATA_A_LENGTH != 0
- ret = _sram_free(addr, &free_l1_data_A_sram_head,
- &used_l1_data_A_sram_head);
-#else
- ret = -1;
-#endif
+ ret = _sram_free(addr, &per_cpu(free_l1_data_A_sram_head, cpu),
+ &per_cpu(used_l1_data_A_sram_head, cpu));
/* add mutex operation */
- spin_unlock_irqrestore(&l1_data_sram_lock, flags);
+ spin_unlock_irqrestore(&per_cpu(l1_data_sram_lock, cpu), flags);
return ret;
+#else
+ return -1;
+#endif
}
EXPORT_SYMBOL(l1_data_A_sram_free);
#if L1_DATA_B_LENGTH != 0
unsigned long flags;
void *addr;
+ unsigned int cpu;
+ cpu = smp_processor_id();
/* add mutex operation */
- spin_lock_irqsave(&l1_data_sram_lock, flags);
+ spin_lock_irqsave(&per_cpu(l1_data_sram_lock, cpu), flags);
- addr = _sram_alloc(size, &free_l1_data_B_sram_head,
- &used_l1_data_B_sram_head);
+ addr = _sram_alloc(size, &per_cpu(free_l1_data_B_sram_head, cpu),
+ &per_cpu(used_l1_data_B_sram_head, cpu));
/* add mutex operation */
- spin_unlock_irqrestore(&l1_data_sram_lock, flags);
+ spin_unlock_irqrestore(&per_cpu(l1_data_sram_lock, cpu), flags);
pr_debug("Allocated address in l1_data_B_sram_alloc is 0x%lx+0x%lx\n",
(long unsigned int)addr, size);
#if L1_DATA_B_LENGTH != 0
unsigned long flags;
int ret;
+ unsigned int cpu;
+ cpu = smp_processor_id();
/* add mutex operation */
- spin_lock_irqsave(&l1_data_sram_lock, flags);
+ spin_lock_irqsave(&per_cpu(l1_data_sram_lock, cpu), flags);
- ret = _sram_free(addr, &free_l1_data_B_sram_head,
- &used_l1_data_B_sram_head);
+ ret = _sram_free(addr, &per_cpu(free_l1_data_B_sram_head, cpu),
+ &per_cpu(used_l1_data_B_sram_head, cpu));
/* add mutex operation */
- spin_unlock_irqrestore(&l1_data_sram_lock, flags);
+ spin_unlock_irqrestore(&per_cpu(l1_data_sram_lock, cpu), flags);
return ret;
#else
#if L1_CODE_LENGTH != 0
unsigned long flags;
void *addr;
+ unsigned int cpu;
+ cpu = smp_processor_id();
/* add mutex operation */
- spin_lock_irqsave(&l1_inst_sram_lock, flags);
+ spin_lock_irqsave(&per_cpu(l1_inst_sram_lock, cpu), flags);
- addr = _sram_alloc(size, &free_l1_inst_sram_head,
- &used_l1_inst_sram_head);
+ addr = _sram_alloc(size, &per_cpu(free_l1_inst_sram_head, cpu),
+ &per_cpu(used_l1_inst_sram_head, cpu));
/* add mutex operation */
- spin_unlock_irqrestore(&l1_inst_sram_lock, flags);
+ spin_unlock_irqrestore(&per_cpu(l1_inst_sram_lock, cpu), flags);
pr_debug("Allocated address in l1_inst_sram_alloc is 0x%lx+0x%lx\n",
(long unsigned int)addr, size);
#if L1_CODE_LENGTH != 0
unsigned long flags;
int ret;
+ unsigned int cpu;
+ cpu = smp_processor_id();
/* add mutex operation */
- spin_lock_irqsave(&l1_inst_sram_lock, flags);
+ spin_lock_irqsave(&per_cpu(l1_inst_sram_lock, cpu), flags);
- ret = _sram_free(addr, &free_l1_inst_sram_head,
- &used_l1_inst_sram_head);
+ ret = _sram_free(addr, &per_cpu(free_l1_inst_sram_head, cpu),
+ &per_cpu(used_l1_inst_sram_head, cpu));
/* add mutex operation */
- spin_unlock_irqrestore(&l1_inst_sram_lock, flags);
+ spin_unlock_irqrestore(&per_cpu(l1_inst_sram_lock, cpu), flags);
return ret;
#else
{
unsigned long flags;
void *addr;
+ unsigned int cpu;
+ cpu = smp_processor_id();
/* add mutex operation */
- spin_lock_irqsave(&l1sram_lock, flags);
+ spin_lock_irqsave(&per_cpu(l1sram_lock, cpu), flags);
- addr = _sram_alloc(size, &free_l1_ssram_head,
- &used_l1_ssram_head);
+ addr = _sram_alloc(size, &per_cpu(free_l1_ssram_head, cpu),
+ &per_cpu(used_l1_ssram_head, cpu));
/* add mutex operation */
- spin_unlock_irqrestore(&l1sram_lock, flags);
+ spin_unlock_irqrestore(&per_cpu(l1sram_lock, cpu), flags);
return addr;
}
{
unsigned long flags;
void *addr;
+ unsigned int cpu;
+ cpu = smp_processor_id();
/* add mutex operation */
- spin_lock_irqsave(&l1sram_lock, flags);
+ spin_lock_irqsave(&per_cpu(l1sram_lock, cpu), flags);
- addr = _sram_alloc_max(&free_l1_ssram_head,
- &used_l1_ssram_head, psize);
+ addr = _sram_alloc_max(&per_cpu(free_l1_ssram_head, cpu),
+ &per_cpu(used_l1_ssram_head, cpu), psize);
/* add mutex operation */
- spin_unlock_irqrestore(&l1sram_lock, flags);
+ spin_unlock_irqrestore(&per_cpu(l1sram_lock, cpu), flags);
return addr;
}
{
unsigned long flags;
int ret;
+ unsigned int cpu;
+ cpu = smp_processor_id();
/* add mutex operation */
- spin_lock_irqsave(&l1sram_lock, flags);
+ spin_lock_irqsave(&per_cpu(l1sram_lock, cpu), flags);
- ret = _sram_free(addr, &free_l1_ssram_head,
- &used_l1_ssram_head);
+ ret = _sram_free(addr, &per_cpu(free_l1_ssram_head, cpu),
+ &per_cpu(used_l1_ssram_head, cpu));
/* add mutex operation */
- spin_unlock_irqrestore(&l1sram_lock, flags);
+ spin_unlock_irqrestore(&per_cpu(l1sram_lock, cpu), flags);
return ret;
}
}
EXPORT_SYMBOL(sram_free_with_lsl);
+/* Allocate memory and keep in L1 SRAM List (lsl) so that the resources are
+ * tracked. These are designed for userspace so that when a process exits,
+ * we can safely reap their resources.
+ */
void *sram_alloc_with_lsl(size_t size, unsigned long flags)
{
void *addr = NULL;
int *eof, void *data)
{
int len = 0;
+ unsigned int cpu;
- if (_sram_proc_read(buf, &len, count, "Scratchpad",
- &free_l1_ssram_head, &used_l1_ssram_head))
- goto not_done;
+ for (cpu = 0; cpu < num_possible_cpus(); ++cpu) {
+ if (_sram_proc_read(buf, &len, count, "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",
- &free_l1_data_A_sram_head,
- &used_l1_data_A_sram_head))
- goto not_done;
+ if (_sram_proc_read(buf, &len, count, "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",
- &free_l1_data_B_sram_head,
- &used_l1_data_B_sram_head))
- goto not_done;
+ if (_sram_proc_read(buf, &len, count, "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",
- &free_l1_inst_sram_head, &used_l1_inst_sram_head))
- goto not_done;
+ if (_sram_proc_read(buf, &len, count, "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_read(buf, &len, count, "L2", &free_l2_sram_head,
+ &used_l2_sram_head))
goto not_done;
#endif
-
*eof = 1;
not_done:
return len;
printk(KERN_WARNING "unable to create /proc/sram\n");
return -1;
}
- ptr->owner = THIS_MODULE;
ptr->read_proc = sram_proc_read;
return 0;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff