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SubjectRe: [PATCH] genirq: Notify clients whenever there is change in affinity
Hi Prasad,

[auto build test WARNING on tip/irq/core]
[also build test WARNING on v4.11-rc3 next-20170322]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Prasad-Sodagudi/genirq-Notify-clients-whenever-there-is-change-in-affinity/20170323-094431
reproduce:
# apt-get install sparse
make ARCH=x86_64 allmodconfig
make C=1 CF=-D__CHECK_ENDIAN__


sparse warnings: (new ones prefixed by >>)

include/linux/compiler.h:264:8: sparse: attribute 'no_sanitize_address': unknown attribute
>> kernel/irq/migration.c:46:36: sparse: not enough arguments for function irq_do_set_affinity
kernel/irq/migration.c: In function 'irq_move_masked_irq':
kernel/irq/migration.c:46:3: error: too few arguments to function 'irq_do_set_affinity'
irq_do_set_affinity(&desc->irq_data, desc->pending_mask, false);
^~~~~~~~~~~~~~~~~~~
In file included from kernel/irq/migration.c:5:0:
kernel/irq/internals.h:116:12: note: declared here
extern int irq_do_set_affinity(struct irq_data *data,
^~~~~~~~~~~~~~~~~~~

vim +46 kernel/irq/migration.c

c777ac55 Andrew Morton 2006-03-25 30
239007b8 Thomas Gleixner 2009-11-17 31 assert_raw_spin_locked(&desc->lock);
501f2499 Bryan Holty 2006-03-25 32
c777ac55 Andrew Morton 2006-03-25 33 /*
c777ac55 Andrew Morton 2006-03-25 34 * If there was a valid mask to work with, please
c777ac55 Andrew Morton 2006-03-25 35 * do the disable, re-program, enable sequence.
c777ac55 Andrew Morton 2006-03-25 36 * This is *not* particularly important for level triggered
c777ac55 Andrew Morton 2006-03-25 37 * but in a edge trigger case, we might be setting rte
25985edc Lucas De Marchi 2011-03-30 38 * when an active trigger is coming in. This could
c777ac55 Andrew Morton 2006-03-25 39 * cause some ioapics to mal-function.
c777ac55 Andrew Morton 2006-03-25 40 * Being paranoid i guess!
e7b946e9 Eric W. Biederman 2006-10-04 41 *
e7b946e9 Eric W. Biederman 2006-10-04 42 * For correct operation this depends on the caller
e7b946e9 Eric W. Biederman 2006-10-04 43 * masking the irqs.
c777ac55 Andrew Morton 2006-03-25 44 */
818b0f3b Jiang Liu 2012-03-30 45 if (cpumask_any_and(desc->pending_mask, cpu_online_mask) < nr_cpu_ids)
818b0f3b Jiang Liu 2012-03-30 @46 irq_do_set_affinity(&desc->irq_data, desc->pending_mask, false);
57b150cc Yinghai Lu 2009-04-27 47
7f7ace0c Mike Travis 2009-01-10 48 cpumask_clear(desc->pending_mask);
e7b946e9 Eric W. Biederman 2006-10-04 49 }
e7b946e9 Eric W. Biederman 2006-10-04 50
a439520f Thomas Gleixner 2011-02-04 51 void irq_move_irq(struct irq_data *idata)
e7b946e9 Eric W. Biederman 2006-10-04 52 {
f1a06390 Thomas Gleixner 2011-01-28 53 bool masked;
e7b946e9 Eric W. Biederman 2006-10-04 54

:::::: The code at line 46 was first introduced by commit
:::::: 818b0f3bfb236ae66cac3ff38e86b9e47f24b7aa genirq: Introduce irq_do_set_affinity() to reduce duplicated code

:::::: TO: Jiang Liu <liuj97@gmail.com>
:::::: CC: Thomas Gleixner <tglx@linutronix.de>

---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation

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