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
WARNING: multiple messages have this Message-ID (diff)
From: Alex Belits <abelits@marvell.com> To: "frederic@kernel.org" <frederic@kernel.org>, "rostedt@goodmis.org" <rostedt@goodmis.org> Cc: "linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>, "catalin.marinas@arm.com" <catalin.marinas@arm.com>, "peterz@infradead.org" <peterz@infradead.org>, Prasun Kapoor <pkapoor@marvell.com>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, "davem@davemloft.net" <davem@davemloft.net>, "netdev@vger.kernel.org" <netdev@vger.kernel.org>, "linux-api@vger.kernel.org" <linux-api@vger.kernel.org>, "tglx@linutronix.de" <tglx@linutronix.de>, "will@kernel.org" <will@kernel.org>, "mingo@kernel.org" <mingo@kernel.org>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-07-22 14:53 UTC|newest] Thread overview: 133+ 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 14:44 ` Alex Belits 2020-07-22 14:44 ` Alex Belits 2020-07-22 14:47 ` [PATCH v4 01/13] task_isolation: vmstat: add quiet_vmstat_sync function Alex Belits 2020-07-22 14:47 ` Alex Belits 2020-07-22 14:47 ` Alex Belits 2020-07-22 14:47 ` Alex Belits 2020-07-22 14:48 ` [PATCH v4 02/13] task_isolation: vmstat: add vmstat_idle function Alex Belits 2020-07-22 14:48 ` Alex Belits 2020-07-22 14:48 ` Alex Belits 2020-07-22 14:49 ` [PATCH v4 03/13] task_isolation: userspace hard isolation from kernel Alex Belits 2020-07-22 14:49 ` Alex Belits 2020-07-22 14:49 ` Alex Belits 2020-10-01 13:56 ` Frederic Weisbecker 2020-10-01 13:56 ` Frederic Weisbecker 2020-10-04 14:44 ` [EXT] " Alex Belits 2020-10-04 14:44 ` Alex Belits 2020-10-04 23:14 ` Frederic Weisbecker 2020-10-04 23:14 ` Frederic Weisbecker 2020-10-05 18:52 ` Nitesh Narayan Lal 2020-10-05 18:52 ` Nitesh Narayan Lal 2020-10-06 10:35 ` Frederic Weisbecker 2020-10-06 10:35 ` Frederic Weisbecker 2020-10-17 1:13 ` Alex Belits 2020-10-17 1:13 ` Alex Belits 2020-10-17 1:08 ` Alex Belits 2020-10-17 1:08 ` Alex Belits 2020-10-17 16:08 ` Thomas Gleixner 2020-10-17 16:08 ` Thomas Gleixner 2020-10-17 16:15 ` Alex Belits 2020-10-17 16:15 ` Alex Belits 2020-10-17 20:03 ` Thomas Gleixner 2020-10-17 20:03 ` Thomas Gleixner 2020-10-06 11:01 ` Alex Belits 2020-10-06 11:01 ` Alex Belits 2020-10-01 14:40 ` Frederic Weisbecker 2020-10-01 14:40 ` Frederic Weisbecker 2020-10-04 15:01 ` [EXT] " Alex Belits 2020-10-04 15:01 ` 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 ` Alex Belits 2020-07-22 14:51 ` Alex Belits 2020-07-22 14:51 ` Alex Belits 2020-07-22 14:51 ` [PATCH v4 05/13] task_isolation: Add xen-specific hook Alex Belits 2020-07-22 14:51 ` Alex Belits 2020-07-22 14:51 ` Alex Belits 2020-07-22 14:53 ` Alex Belits [this message] 2020-07-22 14:53 ` [PATCH 06/13] task_isolation: Add driver-specific hooks Alex Belits 2020-07-22 14:53 ` Alex Belits 2020-07-22 14:54 ` [PATCH v4 07/13] task_isolation: arch/x86: enable task isolation functionality Alex Belits 2020-07-22 14:54 ` Alex Belits 2020-07-22 14:54 ` Alex Belits 2020-07-22 14:55 ` [PATCH 08/13] task_isolation: arch/arm64: " Alex Belits 2020-07-22 14:55 ` Alex Belits 2020-07-22 14:55 ` Alex Belits 2020-07-22 14:55 ` Alex Belits 2020-07-22 14:56 ` [PATCH v4 09/13] task_isolation: arch/arm: " Alex Belits 2020-07-22 14:56 ` Alex Belits 2020-07-22 14:56 ` Alex Belits 2020-07-22 14:56 ` 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 2020-07-22 14:57 ` Alex Belits 2020-07-22 14:57 ` Alex Belits 2020-10-01 14:44 ` Frederic Weisbecker 2020-10-01 14:44 ` Frederic Weisbecker 2020-10-04 15:22 ` [EXT] " Alex Belits 2020-10-04 15:22 ` Alex Belits 2020-10-06 21:41 ` Frederic Weisbecker 2020-10-06 21:41 ` Frederic Weisbecker 2020-10-17 0:17 ` Alex Belits 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 2020-07-22 14:58 ` Alex Belits 2020-07-22 14:58 ` Alex Belits 2020-07-22 14:58 ` Alex Belits 2020-10-01 14:47 ` Frederic Weisbecker 2020-10-01 14:47 ` Frederic Weisbecker 2020-10-04 17:12 ` [EXT] " Alex Belits 2020-10-04 17:12 ` Alex Belits 2021-01-22 14:13 ` Marcelo Tosatti 2021-01-22 14:13 ` Marcelo Tosatti 2021-01-22 16:13 ` Paolo Abeni 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 ` Alex Belits 2020-07-22 14:59 ` Alex Belits 2020-07-22 14:59 ` [PATCH 13/13] task_isolation: kick_all_cpus_sync: don't kick isolated cpus Alex Belits 2020-07-22 14:59 ` Alex Belits 2020-07-22 14:59 ` Alex Belits 2020-07-22 14:59 ` Alex Belits 2020-07-23 13:17 ` [PATCH v4 00/13] "Task_isolation" mode Thomas Gleixner 2020-07-23 13:17 ` Thomas Gleixner 2020-07-23 13:17 ` Thomas Gleixner 2020-07-23 14:26 ` Peter Zijlstra 2020-07-23 14:26 ` Peter Zijlstra 2020-07-23 14:26 ` Peter Zijlstra 2020-07-23 14:53 ` Thomas Gleixner 2020-07-23 14:53 ` Thomas Gleixner 2020-07-23 14:53 ` Thomas Gleixner 2020-07-23 14:29 ` Peter Zijlstra 2020-07-23 14:29 ` Peter Zijlstra 2020-07-23 14:29 ` Peter Zijlstra 2020-07-23 15:41 ` [EXT] " Alex Belits 2020-07-23 15:41 ` Alex Belits 2020-07-23 15:41 ` Alex Belits 2020-07-23 15:48 ` Peter Zijlstra 2020-07-23 15:48 ` Peter Zijlstra 2020-07-23 15:48 ` Peter Zijlstra 2020-07-23 16:19 ` Alex Belits 2020-07-23 16:19 ` Alex Belits 2020-07-23 16:19 ` Alex Belits 2020-07-23 15:18 ` Alex Belits 2020-07-23 15:18 ` Alex Belits 2020-07-23 15:18 ` Alex Belits 2020-07-23 15:49 ` Peter Zijlstra 2020-07-23 15:49 ` Peter Zijlstra 2020-07-23 15:49 ` Peter Zijlstra 2020-07-23 15:49 ` Peter Zijlstra 2020-07-23 16:50 ` Alex Belits 2020-07-23 16:50 ` Alex Belits 2020-07-23 16:50 ` Alex Belits 2020-07-23 21:44 ` Thomas Gleixner 2020-07-23 21:44 ` Thomas Gleixner 2020-07-23 21:44 ` Thomas Gleixner 2020-07-24 3:00 ` [EXT] " Alex Belits 2020-07-24 3:00 ` Alex Belits 2020-07-24 3:00 ` Alex Belits 2020-07-24 16:08 ` Thomas Gleixner 2020-07-24 16:08 ` Thomas Gleixner 2020-07-24 16:08 ` Thomas Gleixner 2020-07-23 21:31 ` Thomas Gleixner 2020-07-23 21:31 ` Thomas Gleixner 2020-07-23 21:31 ` Thomas Gleixner
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