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| author |   Yunhong Jiang <yunhong.jiang@linux.intel.com> | 2017-03-08 23:13:28 -0800 |
|---|---|---|
| committer | Yunhong Jiang <yunhong.jiang@linux.intel.com> | 2017-03-08 23:36:15 -0800 |
| commit | 52f993b8e89487ec9ee15a7fb4979e0f09a45b27 (patch) | |
| tree | d65304486afe0bea4a311c783c0d72791c8c0aa2 /kernel/drivers/irqchip/irq-bcm7038-l1.c | |
| parent | c189ccac5702322ed843fe17057035b7222a59b6 (diff) | |
Upgrade to 4.4.50-rt62
The current kernel is based on rt kernel v4.4.6-rt14. We will upgrade it
to 4.4.50-rt62.
The command to achieve it is:
a) Clone a git repo from
git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git
b) Get the diff between this two changesets:
git diff 640eca2901f3435e616157b11379d3223a44b391
705619beeea1b0b48219a683fd1a901a86fdaf5e
where the two commits are:
[yjiang5@jnakajim-build linux-stable-rt]$ git show --oneline --name-only
640eca2901f3435e616157b11379d3223a44b391
640eca2901f3 v4.4.6-rt14
localversion-rt
[yjiang5@jnakajim-build linux-stable-rt]$ git show --oneline --name-only
705619beeea1b0b48219a683fd1a901a86fdaf5e
705619beeea1 Linux 4.4.50-rt62
localversion-rt
c) One patch has been backported thus revert the patch before applying.
filterdiff -p1 -x scripts/package/Makefile
~/tmp/v4.4.6-rt14-4.4.50-rt62.diff |patch -p1 --dry-run
Upstream status: backport
Change-Id: I244d57a32f6066e5a5b9915f9fbf99e7bbca6e01
Signed-off-by: Yunhong Jiang <yunhong.jiang@linux.intel.com>
Diffstat (limited to 'kernel/drivers/irqchip/irq-bcm7038-l1.c')
| -rw-r--r-- | kernel/drivers/irqchip/irq-bcm7038-l1.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/kernel/drivers/irqchip/irq-bcm7038-l1.c b/kernel/drivers/irqchip/irq-bcm7038-l1.c index 0fea985ef..d7af88534 100644 --- a/kernel/drivers/irqchip/irq-bcm7038-l1.c +++ b/kernel/drivers/irqchip/irq-bcm7038-l1.c @@ -216,6 +216,31 @@ static int bcm7038_l1_set_affinity(struct irq_data *d, return 0; } +static void bcm7038_l1_cpu_offline(struct irq_data *d) +{ + struct cpumask *mask = irq_data_get_affinity_mask(d); + int cpu = smp_processor_id(); + cpumask_t new_affinity; + + /* This CPU was not on the affinity mask */ + if (!cpumask_test_cpu(cpu, mask)) + return; + + if (cpumask_weight(mask) > 1) { + /* + * Multiple CPU affinity, remove this CPU from the affinity + * mask + */ + cpumask_copy(&new_affinity, mask); + cpumask_clear_cpu(cpu, &new_affinity); + } else { + /* Only CPU, put on the lowest online CPU */ + cpumask_clear(&new_affinity); + cpumask_set_cpu(cpumask_first(cpu_online_mask), &new_affinity); + } + irq_set_affinity_locked(d, &new_affinity, false); +} + static int __init bcm7038_l1_init_one(struct device_node *dn, unsigned int idx, struct bcm7038_l1_chip *intc) @@ -267,6 +292,7 @@ static struct irq_chip bcm7038_l1_irq_chip = { .irq_mask = bcm7038_l1_mask, .irq_unmask = bcm7038_l1_unmask, .irq_set_affinity = bcm7038_l1_set_affinity, + .irq_cpu_offline = bcm7038_l1_cpu_offline, }; static int bcm7038_l1_map(struct irq_domain *d, unsigned int virq, |