From: "tip-bot2 for Sebastian Andrzej Siewior" <tip-bot2@linutronix.de>
To: linux-tip-commits@vger.kernel.org
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Thomas Gleixner <tglx@linutronix.de>,
Wei Liu <wei.liu@kernel.org>, Bjorn Helgaas <bhelgaas@google.com>,
"Peter Zijlstra (Intel)" <peterz@infradead.org>,
x86@kernel.org, linux-kernel@vger.kernel.org, maz@kernel.org
Subject: [tip: irq/core] PCI: hv: Use tasklet_disable_in_atomic()
Date: Wed, 17 Mar 2021 15:48:56 -0000 [thread overview]
Message-ID: <161599613604.398.12732595162252073123.tip-bot2@tip-bot2> (raw)
In-Reply-To: <20210309084242.516519290@linutronix.de>
The following commit has been merged into the irq/core branch of tip:
Commit-ID: be4017cea0aec6369275df7eafbb09682f810e7e
Gitweb: https://git.kernel.org/tip/be4017cea0aec6369275df7eafbb09682f810e7e
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
AuthorDate: Tue, 09 Mar 2021 09:42:15 +01:00
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitterDate: Wed, 17 Mar 2021 16:34:03 +01:00
PCI: hv: Use tasklet_disable_in_atomic()
The hv_compose_msi_msg() callback in irq_chip::irq_compose_msi_msg is
invoked via irq_chip_compose_msi_msg(), which itself is always invoked from
atomic contexts from the guts of the interrupt core code.
There is no way to change this w/o rewriting the whole driver, so use
tasklet_disable_in_atomic() which allows to make tasklet_disable()
sleepable once the remaining atomic users are addressed.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Wei Liu <wei.liu@kernel.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210309084242.516519290@linutronix.de
---
drivers/pci/controller/pci-hyperv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pci/controller/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c
index 27a17a1..a313708 100644
--- a/drivers/pci/controller/pci-hyperv.c
+++ b/drivers/pci/controller/pci-hyperv.c
@@ -1458,7 +1458,7 @@ static void hv_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
* Prevents hv_pci_onchannelcallback() from running concurrently
* in the tasklet.
*/
- tasklet_disable(&channel->callback_event);
+ tasklet_disable_in_atomic(&channel->callback_event);
/*
* Since this function is called with IRQ locks held, can't
next prev parent reply other threads:[~2021-03-17 15:50 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-09 8:42 [patch 00/14] tasklets: Replace the spin wait loops and make it RT safe Thomas Gleixner
2021-03-09 8:42 ` [patch 01/14] tasklets: Replace barrier() with cpu_relax() in tasklet_unlock_wait() Thomas Gleixner
2021-03-17 15:49 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-03-09 8:42 ` [patch 02/14] tasklets: Use static inlines for stub implementations Thomas Gleixner
2021-03-17 15:48 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-03-09 8:42 ` [patch 03/14] tasklets: Provide tasklet_disable_in_atomic() Thomas Gleixner
2021-03-17 15:48 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-03-09 8:42 ` [patch 04/14] tasklets: Use spin wait in tasklet_disable() temporarily Thomas Gleixner
2021-03-17 15:48 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-03-09 8:42 ` [patch 05/14] tasklets: Replace spin wait in tasklet_unlock_wait() Thomas Gleixner
2021-03-17 15:48 ` [tip: irq/core] " tip-bot2 for Peter Zijlstra
2021-03-09 8:42 ` [patch 06/14] tasklets: Replace spin wait in tasklet_kill() Thomas Gleixner
2021-03-17 15:48 ` [tip: irq/core] " tip-bot2 for Peter Zijlstra
2021-03-09 8:42 ` [patch 07/14] tasklets: Prevent tasklet_unlock_spin_wait() deadlock on RT Thomas Gleixner
2021-03-09 15:00 ` Sebastian Andrzej Siewior
2021-03-09 15:21 ` Sebastian Andrzej Siewior
2021-03-10 8:35 ` Thomas Gleixner
2021-03-17 15:48 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-03-09 8:42 ` [patch 08/14] net: jme: Replace link-change tasklet with work Thomas Gleixner
2021-03-17 15:48 ` [tip: irq/core] " tip-bot2 for Sebastian Andrzej Siewior
2021-03-09 8:42 ` [patch 09/14] net: sundance: Use tasklet_disable_in_atomic() Thomas Gleixner
2021-03-17 15:48 ` [tip: irq/core] " tip-bot2 for Sebastian Andrzej Siewior
2021-03-09 8:42 ` [patch 10/14] ath9k: " Thomas Gleixner
2021-03-09 10:23 ` Kalle Valo
2021-03-17 15:48 ` [tip: irq/core] " tip-bot2 for Sebastian Andrzej Siewior
2021-03-09 8:42 ` [patch 11/14] atm: eni: Use tasklet_disable_in_atomic() in the send() callback Thomas Gleixner
2021-03-17 15:48 ` [tip: irq/core] " tip-bot2 for Sebastian Andrzej Siewior
2021-03-09 8:42 ` [patch 12/14] PCI: hv: Use tasklet_disable_in_atomic() Thomas Gleixner
2021-03-09 22:17 ` Bjorn Helgaas
2021-03-10 11:34 ` Wei Liu
2021-03-17 15:48 ` tip-bot2 for Sebastian Andrzej Siewior [this message]
2021-03-09 8:42 ` [patch 13/14] firewire: ohci: Use tasklet_disable_in_atomic() where required Thomas Gleixner
2021-03-17 15:48 ` [tip: irq/core] " tip-bot2 for Sebastian Andrzej Siewior
2021-03-09 8:42 ` [patch 14/14] tasklets: Switch tasklet_disable() to the sleep wait variant Thomas Gleixner
2021-03-17 15:48 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-03-09 14:04 ` [patch 00/14] tasklets: Replace the spin wait loops and make it RT safe Peter Zijlstra
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