From: valmiki <valmikibow@gmail.com>
To: linux-pci <linux-pci@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Cc: Bjorn Helgaas <helgaas@kernel.org>,
sbodomerle@gmail.com, rjui@broadcom.com
Subject: Affinity on non MSI-X interrupts
Date: Sat, 24 Feb 2018 00:47:00 +0530 [thread overview]
Message-ID: <714a8d82-c4b0-9661-5b78-ed0d87a0a5fc@gmail.com> (raw)
Hi,
Does multi MSI interrupts will also be set and routed by affinity ?
In drivers/pci/host/pcie-iproc-msi.c interrupt handler there is do while
loop.
head = iproc_msi_read_reg(msi, IPROC_MSI_EQ_HEAD,
eq) & IPROC_MSI_EQ_MASK;
do {
tail = iproc_msi_read_reg(msi, IPROC_MSI_EQ_TAIL,
eq) & IPROC_MSI_EQ_MASK;
.....
}
*/
} while (true);
What happens if two multi MSI cards are connected and continuously
running traffic ? Will this handler ever come out? wont this stall CPU ?
Will the interrupts be routed to different CPU's in this case also?
Regards,
Valmiki
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reply other threads:[~2018-02-23 19:17 UTC|newest]
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