Blackfin: simplify SMP handling in SRAM code

There is no need to use {get,put}_cpu() when we already have a spinlock to
protect against multiple processors running simultaneously.

Signed-off-by: Yi Li <yi.li@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/arch/blackfin/mm/sram-alloc.c b/arch/blackfin/mm/sram-alloc.c
index f068c11..5732da2 100644 (file)
--- a/arch/blackfin/mm/sram-alloc.c
+++ b/arch/blackfin/mm/sram-alloc.c
@@ -402,7 +402,7 @@ void *l1_data_A_sram_alloc(size_t size)
        void *addr;
        unsigned int cpu;
 
-       cpu = get_cpu();
+       cpu = smp_processor_id();
        /* add mutex operation */
        spin_lock_irqsave(&per_cpu(l1_data_sram_lock, cpu), flags);
 
@@ -411,7 +411,6 @@ void *l1_data_A_sram_alloc(size_t size)
 
        /* add mutex operation */
        spin_unlock_irqrestore(&per_cpu(l1_data_sram_lock, cpu), flags);
-       put_cpu();
 
        pr_debug("Allocated address in l1_data_A_sram_alloc is 0x%lx+0x%lx\n",
                 (long unsigned int)addr, size);
@@ -430,7 +429,7 @@ int l1_data_A_sram_free(const void *addr)
        int ret;
        unsigned int cpu;
 
-       cpu = get_cpu();
+       cpu = smp_processor_id();
        /* add mutex operation */
        spin_lock_irqsave(&per_cpu(l1_data_sram_lock, cpu), flags);
 
@@ -439,7 +438,6 @@ int l1_data_A_sram_free(const void *addr)
 
        /* add mutex operation */
        spin_unlock_irqrestore(&per_cpu(l1_data_sram_lock, cpu), flags);
-       put_cpu();
 
        return ret;
 #else
@@ -455,7 +453,7 @@ void *l1_data_B_sram_alloc(size_t size)
        void *addr;
        unsigned int cpu;
 
-       cpu = get_cpu();
+       cpu = smp_processor_id();
        /* add mutex operation */
        spin_lock_irqsave(&per_cpu(l1_data_sram_lock, cpu), flags);
 
@@ -464,7 +462,6 @@ void *l1_data_B_sram_alloc(size_t size)
 
        /* add mutex operation */
        spin_unlock_irqrestore(&per_cpu(l1_data_sram_lock, cpu), flags);
-       put_cpu();
 
        pr_debug("Allocated address in l1_data_B_sram_alloc is 0x%lx+0x%lx\n",
                 (long unsigned int)addr, size);
@@ -483,7 +480,7 @@ int l1_data_B_sram_free(const void *addr)
        int ret;
        unsigned int cpu;
 
-       cpu = get_cpu();
+       cpu = smp_processor_id();
        /* add mutex operation */
        spin_lock_irqsave(&per_cpu(l1_data_sram_lock, cpu), flags);
 
@@ -492,7 +489,6 @@ int l1_data_B_sram_free(const void *addr)
 
        /* add mutex operation */
        spin_unlock_irqrestore(&per_cpu(l1_data_sram_lock, cpu), flags);
-       put_cpu();
 
        return ret;
 #else
@@ -540,7 +536,7 @@ void *l1_inst_sram_alloc(size_t size)
        void *addr;
        unsigned int cpu;
 
-       cpu = get_cpu();
+       cpu = smp_processor_id();
        /* add mutex operation */
        spin_lock_irqsave(&per_cpu(l1_inst_sram_lock, cpu), flags);
 
@@ -549,7 +545,6 @@ void *l1_inst_sram_alloc(size_t size)
 
        /* add mutex operation */
        spin_unlock_irqrestore(&per_cpu(l1_inst_sram_lock, cpu), flags);
-       put_cpu();
 
        pr_debug("Allocated address in l1_inst_sram_alloc is 0x%lx+0x%lx\n",
                 (long unsigned int)addr, size);
@@ -568,7 +563,7 @@ int l1_inst_sram_free(const void *addr)
        int ret;
        unsigned int cpu;
 
-       cpu = get_cpu();
+       cpu = smp_processor_id();
        /* add mutex operation */
        spin_lock_irqsave(&per_cpu(l1_inst_sram_lock, cpu), flags);
 
@@ -577,7 +572,6 @@ int l1_inst_sram_free(const void *addr)
 
        /* add mutex operation */
        spin_unlock_irqrestore(&per_cpu(l1_inst_sram_lock, cpu), flags);
-       put_cpu();
 
        return ret;
 #else
@@ -593,7 +587,7 @@ void *l1sram_alloc(size_t size)
        void *addr;
        unsigned int cpu;
 
-       cpu = get_cpu();
+       cpu = smp_processor_id();
        /* add mutex operation */
        spin_lock_irqsave(&per_cpu(l1sram_lock, cpu), flags);
 
@@ -602,7 +596,6 @@ void *l1sram_alloc(size_t size)
 
        /* add mutex operation */
        spin_unlock_irqrestore(&per_cpu(l1sram_lock, cpu), flags);
-       put_cpu();
 
        return addr;
 }
@@ -614,7 +607,7 @@ void *l1sram_alloc_max(size_t *psize)
        void *addr;
        unsigned int cpu;
 
-       cpu = get_cpu();
+       cpu = smp_processor_id();
        /* add mutex operation */
        spin_lock_irqsave(&per_cpu(l1sram_lock, cpu), flags);
 
@@ -623,7 +616,6 @@ void *l1sram_alloc_max(size_t *psize)
 
        /* add mutex operation */
        spin_unlock_irqrestore(&per_cpu(l1sram_lock, cpu), flags);
-       put_cpu();
 
        return addr;
 }
@@ -635,7 +627,7 @@ int l1sram_free(const void *addr)
        int ret;
        unsigned int cpu;
 
-       cpu = get_cpu();
+       cpu = smp_processor_id();
        /* add mutex operation */
        spin_lock_irqsave(&per_cpu(l1sram_lock, cpu), flags);
 
@@ -644,7 +636,6 @@ int l1sram_free(const void *addr)
 
        /* add mutex operation */
        spin_unlock_irqrestore(&per_cpu(l1sram_lock, cpu), flags);
-       put_cpu();
 
        return ret;
 }