Merge branch 'consolidate-clksrc-i8253' of master.kernel.org:~rmk/linux-2.6-arm into timers/clocksource

Conflicts:
	arch/ia64/kernel/cyclone.c
	arch/mips/kernel/i8253.c
	arch/x86/kernel/i8253.c

Reason: Resolve conflicts so further cleanups do not conflict further

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

12 files changed, 137 insertions, 105 deletions

diff --git a/arch/blackfin/kernel/bfin_dma_5xx.c b/arch/blackfin/kernel/bfin_dma_5xx.c
index 1e485dfdc9f2..6ce8dce753c9 100644
--- a/arch/blackfin/kernel/bfin_dma_5xx.c
+++ b/arch/blackfin/kernel/bfin_dma_5xx.c
@@ -84,6 +84,24 @@ static int __init proc_dma_init(void)
 late_initcall(proc_dma_init);
 #endif
 
+static void set_dma_peripheral_map(unsigned int channel, const char *device_id)
+{
+#ifdef CONFIG_BF54x
+        unsigned int per_map;
+
+        switch (channel) {
+                case CH_UART2_RX: per_map = 0xC << 12; break;
+                case CH_UART2_TX: per_map = 0xD << 12; break;
+                case CH_UART3_RX: per_map = 0xE << 12; break;
+                case CH_UART3_TX: per_map = 0xF << 12; break;
+                default:          return;
+        }
+
+        if (strncmp(device_id, "BFIN_UART", 9) == 0)
+                dma_ch[channel].regs->peripheral_map = per_map;
+#endif
+}
+
 /**
  *      request_dma - request a DMA channel
  *
@@ -111,19 +129,7 @@ int request_dma(unsigned int channel, const char *device_id)
                 return -EBUSY;
         }
 
-#ifdef CONFIG_BF54x
-        if (channel >= CH_UART2_RX && channel <= CH_UART3_TX) {
-                unsigned int per_map;
-                per_map = dma_ch[channel].regs->peripheral_map & 0xFFF;
-                if (strncmp(device_id, "BFIN_UART", 9) == 0)
-                        dma_ch[channel].regs->peripheral_map = per_map |
-                                ((channel - CH_UART2_RX + 0xC)<<12);
-                else
-                        dma_ch[channel].regs->peripheral_map = per_map |
-                                ((channel - CH_UART2_RX + 0x6)<<12);
-        }
-#endif
-
+        set_dma_peripheral_map(channel, device_id);
         dma_ch[channel].device_id = device_id;
         dma_ch[channel].irq = 0;
 
diff --git a/arch/blackfin/kernel/gptimers.c b/arch/blackfin/kernel/gptimers.c
index cdbe075de1dc..8b81dc04488a 100644
--- a/arch/blackfin/kernel/gptimers.c
+++ b/arch/blackfin/kernel/gptimers.c
@@ -268,7 +268,7 @@ void disable_gptimers(uint16_t mask)
         _disable_gptimers(mask);
         for (i = 0; i < MAX_BLACKFIN_GPTIMERS; ++i)
                 if (mask & (1 << i))
-                        group_regs[BFIN_TIMER_OCTET(i)]->status |= trun_mask[i];
+                        group_regs[BFIN_TIMER_OCTET(i)]->status = trun_mask[i];
         SSYNC();
 }
 EXPORT_SYMBOL(disable_gptimers);
diff --git a/arch/blackfin/kernel/ipipe.c b/arch/blackfin/kernel/ipipe.c
index 3b1da4aff2a1..f37019c847c9 100644
--- a/arch/blackfin/kernel/ipipe.c
+++ b/arch/blackfin/kernel/ipipe.c
@@ -154,7 +154,7 @@ void __ipipe_handle_irq(unsigned irq, struct pt_regs *regs)
          * pending for it.
          */
         if (test_bit(IPIPE_AHEAD_FLAG, &this_domain->flags) &&
-            ipipe_head_cpudom_var(irqpend_himask) == 0)
+            !__ipipe_ipending_p(ipipe_head_cpudom_ptr()))
                 goto out;
 
         __ipipe_walk_pipeline(head);
@@ -185,25 +185,21 @@ void __ipipe_disable_irqdesc(struct ipipe_domain *ipd, unsigned irq)
 }
 EXPORT_SYMBOL(__ipipe_disable_irqdesc);
 
-int __ipipe_syscall_root(struct pt_regs *regs)
+asmlinkage int __ipipe_syscall_root(struct pt_regs *regs)
 {
         struct ipipe_percpu_domain_data *p;
-        unsigned long flags;
+        void (*hook)(void);
         int ret;
 
+        WARN_ON_ONCE(irqs_disabled_hw());
+
         /*
-         * We need to run the IRQ tail hook whenever we don't
-         * propagate a syscall to higher domains, because we know that
-         * important operations might be pending there (e.g. Xenomai
-         * deferred rescheduling).
+         * We need to run the IRQ tail hook each time we intercept a
+         * syscall, because we know that important operations might be
+         * pending there (e.g. Xenomai deferred rescheduling).
          */
-
-        if (regs->orig_p0 < NR_syscalls) {
-                void (*hook)(void) = (void (*)(void))__ipipe_irq_tail_hook;
-                hook();
-                if ((current->flags & PF_EVNOTIFY) == 0)
-                        return 0;
-        }
+        hook = (__typeof__(hook))__ipipe_irq_tail_hook;
+        hook();
 
         /*
          * This routine either returns:
@@ -214,51 +210,47 @@ int __ipipe_syscall_root(struct pt_regs *regs)
          * tail work has to be performed (for handling signals etc).
          */
 
-        if (!__ipipe_event_monitored_p(IPIPE_EVENT_SYSCALL))
+        if (!__ipipe_syscall_watched_p(current, regs->orig_p0) ||
+            !__ipipe_event_monitored_p(IPIPE_EVENT_SYSCALL))
                 return 0;
 
         ret = __ipipe_dispatch_event(IPIPE_EVENT_SYSCALL, regs);
 
-        flags = hard_local_irq_save();
+        hard_local_irq_disable();
 
-        if (!__ipipe_root_domain_p) {
-                hard_local_irq_restore(flags);
-                return 1;
+        /*
+         * This is the end of the syscall path, so we may
+         * safely assume a valid Linux task stack here.
+         */
+        if (current->ipipe_flags & PF_EVTRET) {
+                current->ipipe_flags &= ~PF_EVTRET;
+                __ipipe_dispatch_event(IPIPE_EVENT_RETURN, regs);
         }
 
-        p = ipipe_root_cpudom_ptr();
-        if ((p->irqpend_himask & IPIPE_IRQMASK_VIRT) != 0)
-                __ipipe_sync_pipeline(IPIPE_IRQMASK_VIRT);
+        if (!__ipipe_root_domain_p)
+                ret = -1;
+        else {
+                p = ipipe_root_cpudom_ptr();
+                if (__ipipe_ipending_p(p))
+                        __ipipe_sync_pipeline();
+        }
 
-        hard_local_irq_restore(flags);
+        hard_local_irq_enable();
 
         return -ret;
 }
 
-unsigned long ipipe_critical_enter(void (*syncfn) (void))
-{
-        unsigned long flags;
-
-        flags = hard_local_irq_save();
-
-        return flags;
-}
-
-void ipipe_critical_exit(unsigned long flags)
-{
-        hard_local_irq_restore(flags);
-}
-
 static void __ipipe_no_irqtail(void)
 {
 }
 
 int ipipe_get_sysinfo(struct ipipe_sysinfo *info)
 {
-        info->ncpus = num_online_cpus();
-        info->cpufreq = ipipe_cpu_freq();
-        info->archdep.tmirq = IPIPE_TIMER_IRQ;
-        info->archdep.tmfreq = info->cpufreq;
+        info->sys_nr_cpus = num_online_cpus();
+        info->sys_cpu_freq = ipipe_cpu_freq();
+        info->sys_hrtimer_irq = IPIPE_TIMER_IRQ;
+        info->sys_hrtimer_freq = __ipipe_core_clock;
+        info->sys_hrclock_freq = __ipipe_core_clock;
 
         return 0;
 }
@@ -289,6 +281,7 @@ int ipipe_trigger_irq(unsigned irq)
 asmlinkage void __ipipe_sync_root(void)
 {
         void (*irq_tail_hook)(void) = (void (*)(void))__ipipe_irq_tail_hook;
+        struct ipipe_percpu_domain_data *p;
         unsigned long flags;
 
         BUG_ON(irqs_disabled());
@@ -300,19 +293,20 @@ asmlinkage void __ipipe_sync_root(void)
 
         clear_thread_flag(TIF_IRQ_SYNC);
 
-        if (ipipe_root_cpudom_var(irqpend_himask) != 0)
-                __ipipe_sync_pipeline(IPIPE_IRQMASK_ANY);
+        p = ipipe_root_cpudom_ptr();
+        if (__ipipe_ipending_p(p))
+                __ipipe_sync_pipeline();
 
         hard_local_irq_restore(flags);
 }
 
-void ___ipipe_sync_pipeline(unsigned long syncmask)
+void ___ipipe_sync_pipeline(void)
 {
         if (__ipipe_root_domain_p &&
             test_bit(IPIPE_SYNCDEFER_FLAG, &ipipe_root_cpudom_var(status)))
                 return;
 
-        __ipipe_sync_stage(syncmask);
+        __ipipe_sync_stage();
 }
 
 void __ipipe_disable_root_irqs_hw(void)
diff --git a/arch/blackfin/kernel/irqchip.c b/arch/blackfin/kernel/irqchip.c
index 64cff54a8a58..1696d34f51c2 100644
--- a/arch/blackfin/kernel/irqchip.c
+++ b/arch/blackfin/kernel/irqchip.c
@@ -39,21 +39,23 @@ int show_interrupts(struct seq_file *p, void *v)
         unsigned long flags;
 
         if (i < NR_IRQS) {
-                raw_spin_lock_irqsave(&irq_desc[i].lock, flags);
-                action = irq_desc[i].action;
+                struct irq_desc *desc = irq_to_desc(i);
+
+                raw_spin_lock_irqsave(&desc->lock, flags);
+                action = desc->action;
                 if (!action)
                         goto skip;
                 seq_printf(p, "%3d: ", i);
                 for_each_online_cpu(j)
                         seq_printf(p, "%10u ", kstat_irqs_cpu(i, j));
-                seq_printf(p, " %8s", irq_desc[i].chip->name);
+                seq_printf(p, " %8s", irq_desc_get_chip(desc)->name);
                 seq_printf(p, "  %s", action->name);
                 for (action = action->next; action; action = action->next)
                         seq_printf(p, "  %s", action->name);
 
                 seq_putc(p, '\n');
  skip:
-                raw_spin_unlock_irqrestore(&irq_desc[i].lock, flags);
+                raw_spin_unlock_irqrestore(&desc->lock, flags);
         } else if (i == NR_IRQS) {
                 seq_printf(p, "NMI: ");
                 for_each_online_cpu(j)
diff --git a/arch/blackfin/kernel/kgdb.c b/arch/blackfin/kernel/kgdb.c
index eb92592fd80c..9b80b152435e 100644
--- a/arch/blackfin/kernel/kgdb.c
+++ b/arch/blackfin/kernel/kgdb.c
@@ -181,7 +181,7 @@ static int bfin_set_hw_break(unsigned long addr, int len, enum kgdb_bptype type)
                 return -ENOSPC;
         }
 
-        /* Becasue hardware data watchpoint impelemented in current
+        /* Because hardware data watchpoint impelemented in current
          * Blackfin can not trigger an exception event as the hardware
          * instrction watchpoint does, we ignaore all data watch point here.
          * They can be turned on easily after future blackfin design
@@ -422,11 +422,7 @@ int kgdb_arch_handle_exception(int vector, int signo,
 
 struct kgdb_arch arch_kgdb_ops = {
         .gdb_bpt_instr = {0xa1},
-#ifdef CONFIG_SMP
-        .flags = KGDB_HW_BREAKPOINT|KGDB_THR_PROC_SWAP,
-#else
         .flags = KGDB_HW_BREAKPOINT,
-#endif
         .set_hw_breakpoint = bfin_set_hw_break,
         .remove_hw_breakpoint = bfin_remove_hw_break,
         .disable_hw_break = bfin_disable_hw_debug,
diff --git a/arch/blackfin/kernel/module.c b/arch/blackfin/kernel/module.c
index a6dfa6b71e63..35e350cad9d9 100644
--- a/arch/blackfin/kernel/module.c
+++ b/arch/blackfin/kernel/module.c
@@ -4,7 +4,7 @@
  * Licensed under the GPL-2 or later
  */
 
-#define pr_fmt(fmt) "module %s: " fmt
+#define pr_fmt(fmt) "module %s: " fmt, mod->name
 
 #include <linux/moduleloader.h>
 #include <linux/elf.h>
@@ -57,8 +57,7 @@ module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
                         dest = l1_inst_sram_alloc(s->sh_size);
                         mod->arch.text_l1 = dest;
                         if (dest == NULL) {
-                                pr_err("L1 inst memory allocation failed\n",
-                                        mod->name);
+                                pr_err("L1 inst memory allocation failed\n");
                                 return -1;
                         }
                         dma_memcpy(dest, (void *)s->sh_addr, s->sh_size);
@@ -70,8 +69,7 @@ module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
                         dest = l1_data_sram_alloc(s->sh_size);
                         mod->arch.data_a_l1 = dest;
                         if (dest == NULL) {
-                                pr_err("L1 data memory allocation failed\n",
-                                        mod->name);
+                                pr_err("L1 data memory allocation failed\n");
                                 return -1;
                         }
                         memcpy(dest, (void *)s->sh_addr, s->sh_size);
@@ -83,8 +81,7 @@ module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
                         dest = l1_data_sram_zalloc(s->sh_size);
                         mod->arch.bss_a_l1 = dest;
                         if (dest == NULL) {
-                                pr_err("L1 data memory allocation failed\n",
-                                        mod->name);
+                                pr_err("L1 data memory allocation failed\n");
                                 return -1;
                         }
 
@@ -93,8 +90,7 @@ module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
                         dest = l1_data_B_sram_alloc(s->sh_size);
                         mod->arch.data_b_l1 = dest;
                         if (dest == NULL) {
-                                pr_err("L1 data memory allocation failed\n",
-                                        mod->name);
+                                pr_err("L1 data memory allocation failed\n");
                                 return -1;
                         }
                         memcpy(dest, (void *)s->sh_addr, s->sh_size);
@@ -104,8 +100,7 @@ module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
                         dest = l1_data_B_sram_alloc(s->sh_size);
                         mod->arch.bss_b_l1 = dest;
                         if (dest == NULL) {
-                                pr_err("L1 data memory allocation failed\n",
-                                        mod->name);
+                                pr_err("L1 data memory allocation failed\n");
                                 return -1;
                         }
                         memset(dest, 0, s->sh_size);
@@ -117,8 +112,7 @@ module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
                         dest = l2_sram_alloc(s->sh_size);
                         mod->arch.text_l2 = dest;
                         if (dest == NULL) {
-                                pr_err("L2 SRAM allocation failed\n",
-                                        mod->name);
+                                pr_err("L2 SRAM allocation failed\n");
                                 return -1;
                         }
                         memcpy(dest, (void *)s->sh_addr, s->sh_size);
@@ -130,8 +124,7 @@ module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
                         dest = l2_sram_alloc(s->sh_size);
                         mod->arch.data_l2 = dest;
                         if (dest == NULL) {
-                                pr_err("L2 SRAM allocation failed\n",
-                                        mod->name);
+                                pr_err("L2 SRAM allocation failed\n");
                                 return -1;
                         }
                         memcpy(dest, (void *)s->sh_addr, s->sh_size);
@@ -143,8 +136,7 @@ module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
                         dest = l2_sram_zalloc(s->sh_size);
                         mod->arch.bss_l2 = dest;
                         if (dest == NULL) {
-                                pr_err("L2 SRAM allocation failed\n",
-                                        mod->name);
+                                pr_err("L2 SRAM allocation failed\n");
                                 return -1;
                         }
 
@@ -160,9 +152,9 @@ module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
 
 int
 apply_relocate(Elf_Shdr * sechdrs, const char *strtab,
-               unsigned int symindex, unsigned int relsec, struct module *me)
+               unsigned int symindex, unsigned int relsec, struct module *mod)
 {
-        pr_err(".rel unsupported\n", me->name);
+        pr_err(".rel unsupported\n");
         return -ENOEXEC;
 }
 
@@ -186,7 +178,7 @@ apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab,
         Elf32_Sym *sym;
         unsigned long location, value, size;
 
-        pr_debug("applying relocate section %u to %u\n", mod->name,
+        pr_debug("applying relocate section %u to %u\n",
                 relsec, sechdrs[relsec].sh_info);
 
         for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
@@ -203,14 +195,14 @@ apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab,
 
 #ifdef CONFIG_SMP
                 if (location >= COREB_L1_DATA_A_START) {
-                        pr_err("cannot relocate in L1: %u (SMP kernel)",
-                                mod->name, ELF32_R_TYPE(rel[i].r_info));
+                        pr_err("cannot relocate in L1: %u (SMP kernel)\n",
+                                ELF32_R_TYPE(rel[i].r_info));
                         return -ENOEXEC;
                 }
 #endif
 
                 pr_debug("location is %lx, value is %lx type is %d\n",
-                        mod->name, location, value, ELF32_R_TYPE(rel[i].r_info));
+                        location, value, ELF32_R_TYPE(rel[i].r_info));
 
                 switch (ELF32_R_TYPE(rel[i].r_info)) {
 
@@ -230,11 +222,11 @@ apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab,
                 case R_BFIN_PCREL12_JUMP_S:
                 case R_BFIN_PCREL10:
                         pr_err("unsupported relocation: %u (no -mlong-calls?)\n",
-                                mod->name, ELF32_R_TYPE(rel[i].r_info));
+                                ELF32_R_TYPE(rel[i].r_info));
                         return -ENOEXEC;
 
                 default:
-                        pr_err("unknown relocation: %u\n", mod->name,
+                        pr_err("unknown relocation: %u\n",
                                 ELF32_R_TYPE(rel[i].r_info));
                         return -ENOEXEC;
                 }
@@ -251,8 +243,7 @@ apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab,
                         isram_memcpy((void *)location, &value, size);
                         break;
                 default:
-                        pr_err("invalid relocation for %#lx\n",
-                                mod->name, location);
+                        pr_err("invalid relocation for %#lx\n", location);
                         return -ENOEXEC;
                 }
         }
diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c
index ac71dc15cbdb..805c6132c779 100644
--- a/arch/blackfin/kernel/setup.c
+++ b/arch/blackfin/kernel/setup.c
@@ -215,11 +215,48 @@ void __init bfin_relocate_l1_mem(void)
 
         early_dma_memcpy_done();
 
+#if defined(CONFIG_SMP) && defined(CONFIG_ICACHE_FLUSH_L1)
+        blackfin_iflush_l1_entry[0] = (unsigned long)blackfin_icache_flush_range_l1;
+#endif
+
         /* if necessary, copy L2 text/data to L2 SRAM */
         if (L2_LENGTH && l2_len)
                 memcpy(_stext_l2, _l2_lma, l2_len);
 }
 
+#ifdef CONFIG_SMP
+void __init bfin_relocate_coreb_l1_mem(void)
+{
+        unsigned long text_l1_len = (unsigned long)_text_l1_len;
+        unsigned long data_l1_len = (unsigned long)_data_l1_len;
+        unsigned long data_b_l1_len = (unsigned long)_data_b_l1_len;
+
+        blackfin_dma_early_init();
+
+        /* if necessary, copy L1 text to L1 instruction SRAM */
+        if (L1_CODE_LENGTH && text_l1_len)
+                early_dma_memcpy((void *)COREB_L1_CODE_START, _text_l1_lma,
+                                text_l1_len);
+
+        /* if necessary, copy L1 data to L1 data bank A SRAM */
+        if (L1_DATA_A_LENGTH && data_l1_len)
+                early_dma_memcpy((void *)COREB_L1_DATA_A_START, _data_l1_lma,
+                                data_l1_len);
+
+        /* if necessary, copy L1 data B to L1 data bank B SRAM */
+        if (L1_DATA_B_LENGTH && data_b_l1_len)
+                early_dma_memcpy((void *)COREB_L1_DATA_B_START, _data_b_l1_lma,
+                                data_b_l1_len);
+
+        early_dma_memcpy_done();
+
+#ifdef CONFIG_ICACHE_FLUSH_L1
+        blackfin_iflush_l1_entry[1] = (unsigned long)blackfin_icache_flush_range_l1 -
+                        (unsigned long)_stext_l1 + COREB_L1_CODE_START;
+#endif
+}
+#endif
+
 #ifdef CONFIG_ROMKERNEL
 void __init bfin_relocate_xip_data(void)
 {
diff --git a/arch/blackfin/kernel/time-ts.c b/arch/blackfin/kernel/time-ts.c
index 4a013714500b..9e9b60d969dc 100644
--- a/arch/blackfin/kernel/time-ts.c
+++ b/arch/blackfin/kernel/time-ts.c
@@ -175,8 +175,14 @@ irqreturn_t bfin_gptmr0_interrupt(int irq, void *dev_id)
 {
         struct clock_event_device *evt = dev_id;
         smp_mb();
-        evt->event_handler(evt);
+        /*
+         * We want to ACK before we handle so that we can handle smaller timer
+         * intervals.  This way if the timer expires again while we're handling
+         * things, we're more likely to see that 2nd int rather than swallowing
+         * it by ACKing the int at the end of this handler.
+         */
         bfin_gptmr0_ack();
+        evt->event_handler(evt);
         return IRQ_HANDLED;
 }
 
diff --git a/arch/blackfin/kernel/time.c b/arch/blackfin/kernel/time.c
index c9113619029f..8d73724c0092 100644
--- a/arch/blackfin/kernel/time.c
+++ b/arch/blackfin/kernel/time.c
@@ -114,16 +114,14 @@ u32 arch_gettimeoffset(void)
 
 /*
  * timer_interrupt() needs to keep up the real-time clock,
- * as well as call the "do_timer()" routine every clocktick
+ * as well as call the "xtime_update()" routine every clocktick
  */
 #ifdef CONFIG_CORE_TIMER_IRQ_L1
 __attribute__((l1_text))
 #endif
 irqreturn_t timer_interrupt(int irq, void *dummy)
 {
-        write_seqlock(&xtime_lock);
-        do_timer(1);
-        write_sequnlock(&xtime_lock);
+        xtime_update(1);
 
 #ifdef CONFIG_IPIPE
         update_root_process_times(get_irq_regs());
diff --git a/arch/blackfin/kernel/trace.c b/arch/blackfin/kernel/trace.c
index 05b550891ce5..050db44fe919 100644
--- a/arch/blackfin/kernel/trace.c
+++ b/arch/blackfin/kernel/trace.c
@@ -912,10 +912,11 @@ void show_regs(struct pt_regs *fp)
         /* if no interrupts are going off, don't print this out */
         if (fp->ipend & ~0x3F) {
                 for (i = 0; i < (NR_IRQS - 1); i++) {
+                        struct irq_desc *desc = irq_to_desc(i);
                         if (!in_atomic)
-                                raw_spin_lock_irqsave(&irq_desc[i].lock, flags);
+                                raw_spin_lock_irqsave(&desc->lock, flags);
 
-                        action = irq_desc[i].action;
+                        action = desc->action;
                         if (!action)
                                 goto unlock;
 
@@ -928,7 +929,7 @@ void show_regs(struct pt_regs *fp)
                         pr_cont("\n");
 unlock:
                         if (!in_atomic)
-                                raw_spin_unlock_irqrestore(&irq_desc[i].lock, flags);
+                                raw_spin_unlock_irqrestore(&desc->lock, flags);
                 }
         }
 
diff --git a/arch/blackfin/kernel/traps.c b/arch/blackfin/kernel/traps.c
index 59c1df75e4de..655f25d139a7 100644
--- a/arch/blackfin/kernel/traps.c
+++ b/arch/blackfin/kernel/traps.c
@@ -98,7 +98,7 @@ asmlinkage notrace void trap_c(struct pt_regs *fp)
         /* send the appropriate signal to the user program */
         switch (trapnr) {
 
-        /* This table works in conjuction with the one in ./mach-common/entry.S
+        /* This table works in conjunction with the one in ./mach-common/entry.S
          * Some exceptions are handled there (in assembly, in exception space)
          * Some are handled here, (in C, in interrupt space)
          * Some, like CPLB, are handled in both, where the normal path is
diff --git a/arch/blackfin/kernel/vmlinux.lds.S b/arch/blackfin/kernel/vmlinux.lds.S
index 4122678529c0..854fa49f1c3e 100644
--- a/arch/blackfin/kernel/vmlinux.lds.S
+++ b/arch/blackfin/kernel/vmlinux.lds.S
@@ -136,7 +136,7 @@ SECTIONS
 
         . = ALIGN(16);
         INIT_DATA_SECTION(16)
-        PERCPU(4)
+        PERCPU(32, PAGE_SIZE)
 
         .exit.data :
         {
@@ -176,6 +176,7 @@ SECTIONS
         {
                 . = ALIGN(4);
                 __stext_l1 = .;
+                *(.l1.text.head)
                 *(.l1.text)
 #ifdef CONFIG_SCHEDULE_L1
                 SCHED_TEXT