From: Tomas Henzl <thenzl@redhat.com>
To: Suganath prabu Subaramani
<suganath-prabu.subramani@avagotech.com>,
JBottomley@Parallels.com, jejb@kernel.org, hch@infradead.org
Cc: martin.petersen@oracle.com, linux-scsi@vger.kernel.org,
Sathya.Prakash@avagotech.com, kashyap.desai@avagotech.com,
krishnaraddi.mankani@avagotech.com, linux-kernel@vger.kernel.org,
chaitra.basappa@avagotech.com, sreekanth.reddy@avagotech.com
Subject: Re: [mpt3sas driver 06/10] mpt3sas: Added smp_affinity_enable module parameter.
Date: Thu, 4 Feb 2016 16:01:09 +0100 [thread overview]
Message-ID: <56B367B5.5030001@redhat.com> (raw)
In-Reply-To: <1453963027-19770-7-git-send-email-suganath-prabu.subramani@avagotech.com>
On 28.1.2016 07:37, Suganath prabu Subaramani wrote:
> From: Suganath prabu Subramani <suganath-prabu.subramani@avagotech.com>
>
> Module parameter to enable/disable configuring
> affinity hint for msix vector.
> SMP affinity feature can be enabled/disabled by setting
> module parameter "smp_affinity_enable" to 1/0.
> By default this feature is enabled. (smp_affinity_enable = 1 enabled).
>
> Signed-off-by: Suganath prabu Subramani <suganath-prabu.subramani@avagotech.com>
> Signed-off-by: Chaitra P B <chaitra.basappa@avagotech.com>
> ---
> drivers/scsi/mpt3sas/mpt3sas_base.c | 34 +++++++++++++++++++++++-----------
> 1 file changed, 23 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
> index 31838d9a..a1a3b39 100644
> --- a/drivers/scsi/mpt3sas/mpt3sas_base.c
> +++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
> @@ -83,6 +83,10 @@ static int msix_disable = -1;
> module_param(msix_disable, int, 0);
> MODULE_PARM_DESC(msix_disable, " disable msix routed interrupts (default=0)");
>
> +static int smp_affinity_enable = 1;
> +module_param(smp_affinity_enable, int, S_IRUGO);
> +MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disbale Default: enable(1)");
> +
> static int max_msix_vectors = -1;
> module_param(max_msix_vectors, int, 0);
> MODULE_PARM_DESC(max_msix_vectors,
> @@ -1812,8 +1816,10 @@ _base_free_irq(struct MPT3SAS_ADAPTER *ioc)
>
> list_for_each_entry_safe(reply_q, next, &ioc->reply_queue_list, list) {
> list_del(&reply_q->list);
> - irq_set_affinity_hint(reply_q->vector, NULL);
> - free_cpumask_var(reply_q->affinity_hint);
> + if (smp_affinity_enable) {
> + irq_set_affinity_hint(reply_q->vector, NULL);
> + free_cpumask_var(reply_q->affinity_hint);
> + }
> synchronize_irq(reply_q->vector);
> free_irq(reply_q->vector, reply_q);
> kfree(reply_q);
> @@ -1844,9 +1850,11 @@ _base_request_irq(struct MPT3SAS_ADAPTER *ioc, u8 index, u32 vector)
> reply_q->msix_index = index;
> reply_q->vector = vector;
>
> - if (!alloc_cpumask_var(&reply_q->affinity_hint, GFP_KERNEL))
> - return -ENOMEM;
> - cpumask_clear(reply_q->affinity_hint);
> + if (smp_affinity_enable) {
> + if (!alloc_cpumask_var(&reply_q->affinity_hint, GFP_KERNEL))
a kfree(reply_q); should go here
> + return -ENOMEM;
> + cpumask_clear(reply_q->affinity_hint);
maybe zalloc_cpumask_var ?
> + }
if (r) {
pr_err(MPT3SAS_FMT "unable to allocate interrupt %d!\n",
reply_q->name, vector);
kfree(reply_q);
and a free_cpumask_var (..) here ?
return -EBUSY;
cheers,
tomash
next prev parent reply other threads:[~2016-02-04 15:01 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-28 6:36 [mpt3sas driver patches 00/10] mpt3sas driver enhancements and Suganath prabu Subaramani
2016-01-28 6:36 ` [mpt3sas driver 01/10] mpt3sas: Added support for high port count HBA variants Suganath prabu Subaramani
2016-02-04 14:14 ` Tomas Henzl
2016-01-28 6:36 ` [mpt3sas driver 02/10] mpt3sas: Used IEEE SGL instead of MPI SGL while framing a SMP Passthrough request message Suganath prabu Subaramani
2016-01-28 9:16 ` Christoph Hellwig
2016-02-04 14:18 ` Tomas Henzl
2016-01-28 6:37 ` [mpt3sas driver 03/10] mpt3sas: Fix static analyzer(coverity) tool identified defects Suganath prabu Subaramani
2016-02-04 14:18 ` Tomas Henzl
2016-01-28 6:37 ` [mpt3sas driver 04/10] mpt3sas: Never block the Enclosure device Suganath prabu Subaramani
2016-02-04 14:19 ` Tomas Henzl
2016-01-28 6:37 ` [mpt3sas driver 05/10] mpt3sas: Make use of additional HighPriority credit message frames for sending SCSI IO's Suganath prabu Subaramani
2016-02-04 14:24 ` Tomas Henzl
2016-01-28 6:37 ` [mpt3sas driver 06/10] mpt3sas: Added smp_affinity_enable module parameter Suganath prabu Subaramani
2016-02-04 15:01 ` Tomas Henzl [this message]
2016-02-08 6:01 ` Suganath Prabu Subramani
2016-02-08 12:38 ` Tomas Henzl
2016-01-28 6:37 ` [mpt3sas driver 07/10] mpt3sas: Add support for configurable Chain Frame Size Suganath prabu Subaramani
2016-02-04 15:05 ` Tomas Henzl
2016-02-05 7:56 ` Sreekanth Reddy
2016-02-08 13:55 ` Tomas Henzl
2016-01-28 6:37 ` [mpt3sas driver 08/10] mpt3sas: Updated MPI Header to 2.00.42 Suganath prabu Subaramani
2016-02-04 15:06 ` Tomas Henzl
2016-01-28 6:37 ` [mpt3sas driver 09/10] mpt3sas: Fix for Asynchronous completion of timedout IO and task abort of timedout IO Suganath prabu Subaramani
2016-02-04 15:07 ` Tomas Henzl
2016-01-28 6:37 ` [mpt3sas driver 10/10] mpt3sas: Updating mpt3sas driver version to 12.100.00.00 Suganath prabu Subaramani
2016-02-04 15:08 ` Tomas Henzl
2016-02-05 2:04 ` [mpt3sas driver patches 00/10] mpt3sas driver enhancements and Martin K. Petersen
2016-02-10 17:20 ` Martin K. Petersen
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