Blackfin arch: fix bug - kgdb fails to continue after setting breakpoint on bf561-ezkit kernel with smp patch
Free spinlock before call IPI handlers. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Header from folded patch 'blackfin_arch__fix_bug_-_kgdb_fails_to_continue_after_setting_breakpoint_on_bf561-ezkit_kernel_with_smp_patch-1': Blackfin arch: fix bug - kgdb fails to continue after setting breakpoint on bf561-ezkit kernel with smp patch Don't test l1 code in SMP kernel. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
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@ -20,6 +20,7 @@
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static char cmdline[256];
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static unsigned long len;
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#ifndef CONFIG_SMP
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static int num1 __attribute__((l1_data));
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void kgdb_l1_test(void) __attribute__((l1_text));
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@ -32,6 +33,8 @@ void kgdb_l1_test(void)
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printk(KERN_ALERT "L1(after change) : data variable addr = 0x%p, data value is %d\n", &num1, num1);
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return ;
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}
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#endif
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#if L2_LENGTH
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static int num2 __attribute__((l2));
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@ -59,10 +62,12 @@ int kgdb_test(char *name, int len, int count, int z)
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static int test_proc_output(char *buf)
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{
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kgdb_test("hello world!", 12, 0x55, 0x10);
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#ifndef CONFIG_SMP
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kgdb_l1_test();
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#if L2_LENGTH
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#endif
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#if L2_LENGTH
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kgdb_l2_test();
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#endif
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#endif
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return 0;
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}
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@ -158,10 +158,14 @@ static irqreturn_t ipi_handler(int irq, void *dev_instance)
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kfree(msg);
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break;
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case BFIN_IPI_CALL_FUNC:
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spin_unlock(&msg_queue->lock);
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ipi_call_function(cpu, msg);
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spin_lock(&msg_queue->lock);
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break;
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case BFIN_IPI_CPU_STOP:
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spin_unlock(&msg_queue->lock);
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ipi_cpu_stop(cpu);
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spin_lock(&msg_queue->lock);
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kfree(msg);
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break;
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default:
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@ -457,7 +461,7 @@ void smp_icache_flush_range_others(unsigned long start, unsigned long end)
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smp_flush_data.start = start;
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smp_flush_data.end = end;
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if (smp_call_function(&ipi_flush_icache, &smp_flush_data, 1))
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if (smp_call_function(&ipi_flush_icache, &smp_flush_data, 0))
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printk(KERN_WARNING "SMP: failed to run I-cache flush request on other CPUs\n");
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}
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EXPORT_SYMBOL_GPL(smp_icache_flush_range_others);
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