From: Alex Belits <abelits@marvell.com>
To: "frederic@kernel.org" <frederic@kernel.org>,
"rostedt@goodmis.org" <rostedt@goodmis.org>
Cc: Prasun Kapoor <pkapoor@marvell.com>,
"mingo@kernel.org" <mingo@kernel.org>,
"davem@davemloft.net" <davem@davemloft.net>,
"linux-api@vger.kernel.org" <linux-api@vger.kernel.org>,
"peterz@infradead.org" <peterz@infradead.org>,
"linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>,
"catalin.marinas@arm.com" <catalin.marinas@arm.com>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"will@kernel.org" <will@kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>
Subject: [PATCH 06/13] task_isolation: Add driver-specific hooks
Date: Wed, 22 Jul 2020 14:53:00 +0000 [thread overview]
Message-ID: <d5302ef35a20976f360f619884bfcd087eab77fb.camel@marvell.com> (raw)
In-Reply-To: <04be044c1bcd76b7438b7563edc35383417f12c8.camel@marvell.com>
Some drivers don't call functions that call
task_isolation_kernel_enter() in interrupt handlers. Call it
directly.
Signed-off-by: Alex Belits <abelits@marvell.com>
---
drivers/irqchip/irq-armada-370-xp.c | 6 ++++++
drivers/irqchip/irq-gic-v3.c | 3 +++
drivers/irqchip/irq-gic.c | 3 +++
drivers/s390/cio/cio.c | 3 +++
4 files changed, 15 insertions(+)
diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c
index c9bdc5221b82..df7f2cce3a54 100644
--- a/drivers/irqchip/irq-armada-370-xp.c
+++ b/drivers/irqchip/irq-armada-370-xp.c
@@ -29,6 +29,7 @@
#include <linux/slab.h>
#include <linux/syscore_ops.h>
#include <linux/msi.h>
+#include <linux/isolation.h>
#include <asm/mach/arch.h>
#include <asm/exception.h>
#include <asm/smp_plat.h>
@@ -473,6 +474,7 @@ static const struct irq_domain_ops armada_370_xp_mpic_irq_ops = {
static void armada_370_xp_handle_msi_irq(struct pt_regs *regs, bool is_chained)
{
u32 msimask, msinr;
+ int isol_entered = 0;
msimask = readl_relaxed(per_cpu_int_base +
ARMADA_370_XP_IN_DRBEL_CAUSE_OFFS)
@@ -489,6 +491,10 @@ static void armada_370_xp_handle_msi_irq(struct pt_regs *regs, bool is_chained)
continue;
if (is_chained) {
+ if (!isol_entered) {
+ task_isolation_kernel_enter();
+ isol_entered = 1;
+ }
irq = irq_find_mapping(armada_370_xp_msi_inner_domain,
msinr - PCI_MSI_DOORBELL_START);
generic_handle_irq(irq);
diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c
index cc46bc2d634b..be0e0ffa0fb7 100644
--- a/drivers/irqchip/irq-gic-v3.c
+++ b/drivers/irqchip/irq-gic-v3.c
@@ -18,6 +18,7 @@
#include <linux/percpu.h>
#include <linux/refcount.h>
#include <linux/slab.h>
+#include <linux/isolation.h>
#include <linux/irqchip.h>
#include <linux/irqchip/arm-gic-common.h>
@@ -629,6 +630,8 @@ static asmlinkage void __exception_irq_entry gic_handle_irq(struct pt_regs *regs
{
u32 irqnr;
+ task_isolation_kernel_enter();
+
irqnr = gic_read_iar();
if (gic_supports_nmi() &&
diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index c17fabd6741e..fde547a31566 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -35,6 +35,7 @@
#include <linux/interrupt.h>
#include <linux/percpu.h>
#include <linux/slab.h>
+#include <linux/isolation.h>
#include <linux/irqchip.h>
#include <linux/irqchip/chained_irq.h>
#include <linux/irqchip/arm-gic.h>
@@ -353,6 +354,8 @@ static void __exception_irq_entry gic_handle_irq(struct pt_regs *regs)
struct gic_chip_data *gic = &gic_data[0];
void __iomem *cpu_base = gic_data_cpu_base(gic);
+ task_isolation_kernel_enter();
+
do {
irqstat = readl_relaxed(cpu_base + GIC_CPU_INTACK);
irqnr = irqstat & GICC_IAR_INT_ID_MASK;
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 6d716db2a46a..beab88881b6d 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -20,6 +20,7 @@
#include <linux/kernel_stat.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
+#include <linux/isolation.h>
#include <asm/cio.h>
#include <asm/delay.h>
#include <asm/irq.h>
@@ -584,6 +585,8 @@ void cio_tsch(struct subchannel *sch)
struct irb *irb;
int irq_context;
+ task_isolation_kernel_enter();
+
irb = this_cpu_ptr(&cio_irb);
/* Store interrupt response block to lowcore. */
if (tsch(sch->schid, irb) != 0)
--
2.26.2
next prev parent reply other threads:[~2020-07-22 14:53 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-22 14:44 [PATCH v4 00/13] "Task_isolation" mode Alex Belits
2020-07-22 14:47 ` [PATCH v4 01/13] task_isolation: vmstat: add quiet_vmstat_sync function Alex Belits
2020-07-22 14:48 ` [PATCH v4 02/13] task_isolation: vmstat: add vmstat_idle function Alex Belits
2020-07-22 14:49 ` [PATCH v4 03/13] task_isolation: userspace hard isolation from kernel Alex Belits
2020-10-01 13:56 ` Frederic Weisbecker
2020-10-04 14:44 ` [EXT] " Alex Belits
2020-10-04 23:14 ` Frederic Weisbecker
2020-10-05 18:52 ` Nitesh Narayan Lal
2020-10-06 10:35 ` Frederic Weisbecker
2020-10-17 1:13 ` Alex Belits
2020-10-17 1:08 ` Alex Belits
2020-10-17 16:08 ` Thomas Gleixner
2020-10-17 16:15 ` Alex Belits
2020-10-17 20:03 ` Thomas Gleixner
2020-10-06 11:01 ` Alex Belits
2020-10-01 14:40 ` Frederic Weisbecker
2020-10-04 15:01 ` [EXT] " Alex Belits
2020-07-22 14:51 ` [PATCH v4 04/13] task_isolation: Add task isolation hooks to arch-independent code Alex Belits
2020-07-22 14:51 ` [PATCH v4 05/13] task_isolation: Add xen-specific hook Alex Belits
2020-07-22 14:53 ` Alex Belits [this message]
2020-07-22 14:54 ` [PATCH v4 07/13] task_isolation: arch/x86: enable task isolation functionality Alex Belits
2020-07-22 14:55 ` [PATCH 08/13] task_isolation: arch/arm64: " Alex Belits
2020-07-22 14:56 ` [PATCH v4 09/13] task_isolation: arch/arm: " Alex Belits
2020-07-22 14:57 ` [PATCH v4 10/13] task_isolation: don't interrupt CPUs with tick_nohz_full_kick_cpu() Alex Belits
2020-10-01 14:44 ` Frederic Weisbecker
2020-10-04 15:22 ` [EXT] " Alex Belits
2020-10-06 21:41 ` Frederic Weisbecker
2020-10-17 0:17 ` Alex Belits
2020-07-22 14:58 ` [PATCH v4 11/13] task_isolation: net: don't flush backlog on CPUs running isolated tasks Alex Belits
2020-10-01 14:47 ` Frederic Weisbecker
2020-10-04 17:12 ` [EXT] " Alex Belits
2021-01-22 14:13 ` Marcelo Tosatti
2021-01-22 16:13 ` Paolo Abeni
2020-07-22 14:59 ` [PATCH v4 12/13] task_isolation: ringbuffer: don't interrupt CPUs running isolated tasks on buffer resize Alex Belits
2020-07-22 14:59 ` [PATCH 13/13] task_isolation: kick_all_cpus_sync: don't kick isolated cpus Alex Belits
2020-07-23 13:17 ` [PATCH v4 00/13] "Task_isolation" mode Thomas Gleixner
2020-07-23 14:26 ` Peter Zijlstra
2020-07-23 14:53 ` Thomas Gleixner
2020-07-23 14:29 ` Peter Zijlstra
2020-07-23 15:41 ` [EXT] " Alex Belits
2020-07-23 15:48 ` Peter Zijlstra
2020-07-23 16:19 ` Alex Belits
2020-07-23 15:18 ` Alex Belits
2020-07-23 15:49 ` Peter Zijlstra
2020-07-23 16:50 ` Alex Belits
2020-07-23 21:44 ` Thomas Gleixner
2020-07-24 3:00 ` [EXT] " Alex Belits
2020-07-24 16:08 ` Thomas Gleixner
2020-07-23 21:31 ` Thomas Gleixner
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