Re: [RFC v2 PATCH 09/14] MIPS: add support for generic SMP IPI support

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On 10/13/2015 02:48 PM, Thomas Gleixner wrote:
On Tue, 13 Oct 2015, Qais Yousef wrote:
+#ifdef CONFIG_GENERIC_IRQ_IPI
+void generic_smp_send_ipi_single(int cpu, unsigned int action)
Please use a mips name space. This suggests that it s completely
generic, which is not true.

+{
+	generic_smp_send_ipi_mask(cpumask_of(cpu), action);
+}
+
+void generic_smp_send_ipi_mask(const struct cpumask *mask, unsigned int action)
Ditto.

OK.

+{
+	unsigned long flags;
+	unsigned int core;
+	int cpu;
+	struct ipi_mask ipi_mask;
+
+	ipi_mask.cpumask = ((struct cpumask *)mask)->bits;
We have accessors for that. Hmm, so for this case we must make the
ipi_mask different:

struct ipi_mask {
	unsigned int	nbits;
	bool		global;
	union {
        	     struct cpumask *mask;
	     unsigned long  cpu_bitmap[];
	};
};


Right. This looks cleaner for sure. Not sure why I haven't though about this.

Thanks,
Qais




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