linux-kernel - Re: [PATCH RT] ehea: make receive irq handler non-threaded (IRQF

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Message-ID: <4BF54689.7090106@us.ibm.com>
Date:	Thu, 20 May 2010 07:26:17 -0700
From:	Nivedita Singhvi <niv@...ibm.com>
To:	Thomas Gleixner <tglx@...utronix.de>
CC:	Jan-Bernd Themann <THEMANN@...ibm.com>,
	Brian King <brking@...ux.vnet.ibm.com>,
	Doug Maxey <doug.maxey@...ibm.com>,
	Darren Hart <dvhltc@...ibm.com>, dvhltc@...ux.vnet.ibm.com,
	linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	michael@...erman.id.au, niv@...ux.vnet.ibm.com,
	Will Schmidt <will_schmidt@...t.ibm.com>
Subject: Re: [PATCH RT] ehea: make receive irq handler non-threaded (IRQF_NODELAY)

Thomas Gleixner wrote:

>> Pleaes check if multiple queues are enabled. The following module parameter
>> is used for that:
>>
>> MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0
>> ");
>>
>> you should also see the number of used HEA interrupts in /proc/interrupts
> 
> I leave that for Will and Darren, they have the hardware :)

  16:     477477	...	XICS      Level     IPI
  17:        129 ...	XICS      Level     hvc_console
  18:          0 ...	XICS      Level     RAS_EPOW
  33:     139232 ...     XICS      Level     mlx4_core
256:          3 ...     XICS      Level     ehea_neq
259:          0 ...     XICS      Level     eth0-aff
260:    2082153 ...	XICS      Level     eth0-queue0
289:     119166 ...	XICS      Level     ipr
305:          0 ...	XICS      Level     ohci_hcd:usb2
306:          0 ...	XICS      Level     ohci_hcd:usb3
307:    2389839 ...	XICS      Level     ehci_hcd:usb1


Nope, multiple rx queues not enabled.

thanks,
Nivedita
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