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From: Matthew Wilcox <willy@infradead.org>
To: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org,
	target-devel@vger.kernel.org,
	linux1394-devel@lists.sourceforge.net, linux-usb@vger.kernel.org,
	kvm@vger.kernel.org, virtualization@lists.linux-foundation.org,
	netdev@vger.kernel.org, Juergen Gross <jgross@suse.com>,
	qla2xxx-upstream@qlogic.com,
	Kent Overstreet <kent.overstreet@gmail.com>,
	Jens Axboe <axboe@kernel.dk>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Subject: [PATCH 0/2] Use sbitmap instead of percpu_ida
Date: Tue, 15 May 2018 09:00:41 -0700	[thread overview]
Message-ID: <20180515160043.27044-1-willy@infradead.org> (raw)

From: Matthew Wilcox <mawilcox@microsoft.com>

This is a pretty rough-and-ready conversion of the target drivers
from using percpu_ida to sbitmap.  It compiles; I don't have a target
setup, so it's completely untested.  I haven't tried to do anything
particularly clever here, so it's possible that, for example, the wait
queue in iscsi_target_util could be more clever, like the block layer
uses multiple wait queues to avoid pingpongs.  Or maybe we could figure
out a way to not store the CPU that the ID was allocated on, or perhaps
the options I specified to sbitmap_queue_init() are suboptimal.

Patch 2 isn't interesting; it just deletes the implementation.  Patch 1
will be where all the action is.

Matthew Wilcox (2):
  Convert target drivers to use sbitmap
  Remove percpu_ida

 drivers/scsi/qla2xxx/qla_target.c        |  16 +-
 drivers/target/iscsi/iscsi_target_util.c |  34 +-
 drivers/target/sbp/sbp_target.c          |   8 +-
 drivers/target/target_core_transport.c   |   5 +-
 drivers/target/tcm_fc/tfc_cmd.c          |  11 +-
 drivers/usb/gadget/function/f_tcm.c      |   8 +-
 drivers/vhost/scsi.c                     |   9 +-
 drivers/xen/xen-scsiback.c               |   8 +-
 include/linux/percpu_ida.h               |  83 -----
 include/target/iscsi/iscsi_target_core.h |   1 +
 include/target/target_core_base.h        |   5 +-
 lib/Makefile                             |   2 +-
 lib/percpu_ida.c                         | 391 -----------------------
 13 files changed, 74 insertions(+), 507 deletions(-)
 delete mode 100644 include/linux/percpu_ida.h
 delete mode 100644 lib/percpu_ida.c

-- 
2.17.0


WARNING: multiple messages have this Message-ID

From: Matthew Wilcox <willy@infradead.org>
To: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org,
	target-devel@vger.kernel.org,
	linux1394-devel@lists.sourceforge.net, linux-usb@vger.kernel.org,
	kvm@vger.kernel.org, virtualization@lists.linux-foundation.org,
	netdev@vger.kernel.org, Juergen Gross <jgross@suse.com>,
	qla2xxx-upstream@qlogic.com,
	Kent Overstreet <kent.overstreet@gmail.com>,
	Jens Axboe <axboe@kernel.dk>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Subject: [PATCH 0/2] Use sbitmap instead of percpu_ida
Date: Tue, 15 May 2018 09:00:41 -0700	[thread overview]
Message-ID: <20180515160043.27044-1-willy@infradead.org> (raw)

From: Matthew Wilcox <mawilcox@microsoft.com>

This is a pretty rough-and-ready conversion of the target drivers
from using percpu_ida to sbitmap.  It compiles; I don't have a target
setup, so it's completely untested.  I haven't tried to do anything
particularly clever here, so it's possible that, for example, the wait
queue in iscsi_target_util could be more clever, like the block layer
uses multiple wait queues to avoid pingpongs.  Or maybe we could figure
out a way to not store the CPU that the ID was allocated on, or perhaps
the options I specified to sbitmap_queue_init() are suboptimal.

Patch 2 isn't interesting; it just deletes the implementation.  Patch 1
will be where all the action is.

Matthew Wilcox (2):
  Convert target drivers to use sbitmap
  Remove percpu_ida

 drivers/scsi/qla2xxx/qla_target.c        |  16 +-
 drivers/target/iscsi/iscsi_target_util.c |  34 +-
 drivers/target/sbp/sbp_target.c          |   8 +-
 drivers/target/target_core_transport.c   |   5 +-
 drivers/target/tcm_fc/tfc_cmd.c          |  11 +-
 drivers/usb/gadget/function/f_tcm.c      |   8 +-
 drivers/vhost/scsi.c                     |   9 +-
 drivers/xen/xen-scsiback.c               |   8 +-
 include/linux/percpu_ida.h               |  83 -----
 include/target/iscsi/iscsi_target_core.h |   1 +
 include/target/target_core_base.h        |   5 +-
 lib/Makefile                             |   2 +-
 lib/percpu_ida.c                         | 391 -----------------------
 13 files changed, 74 insertions(+), 507 deletions(-)
 delete mode 100644 include/linux/percpu_ida.h
 delete mode 100644 lib/percpu_ida.c

-- 
2.17.0


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WARNING: multiple messages have this Message-ID

From: Matthew Wilcox <willy@infradead.org>
To: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org,
	target-devel@vger.kernel.org,
	linux1394-devel@lists.sourceforge.net, linux-usb@vger.kernel.org,
	kvm@vger.kernel.org, virtualization@lists.linux-foundation.org,
	netdev@vger.kernel.org, Juergen Gross <jgross@suse.com>,
	qla2xxx-upstream@qlogic.com,
	Kent Overstreet <kent.overstreet@gmail.com>,
	Jens Axboe <axboe@kernel.dk>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Subject: [PATCH 0/2] Use sbitmap instead of percpu_ida
Date: Tue, 15 May 2018 16:00:41 +0000	[thread overview]
Message-ID: <20180515160043.27044-1-willy@infradead.org> (raw)

From: Matthew Wilcox <mawilcox@microsoft.com>

This is a pretty rough-and-ready conversion of the target drivers
from using percpu_ida to sbitmap.  It compiles; I don't have a target
setup, so it's completely untested.  I haven't tried to do anything
particularly clever here, so it's possible that, for example, the wait
queue in iscsi_target_util could be more clever, like the block layer
uses multiple wait queues to avoid pingpongs.  Or maybe we could figure
out a way to not store the CPU that the ID was allocated on, or perhaps
the options I specified to sbitmap_queue_init() are suboptimal.

Patch 2 isn't interesting; it just deletes the implementation.  Patch 1
will be where all the action is.

Matthew Wilcox (2):
  Convert target drivers to use sbitmap
  Remove percpu_ida

 drivers/scsi/qla2xxx/qla_target.c        |  16 +-
 drivers/target/iscsi/iscsi_target_util.c |  34 +-
 drivers/target/sbp/sbp_target.c          |   8 +-
 drivers/target/target_core_transport.c   |   5 +-
 drivers/target/tcm_fc/tfc_cmd.c          |  11 +-
 drivers/usb/gadget/function/f_tcm.c      |   8 +-
 drivers/vhost/scsi.c                     |   9 +-
 drivers/xen/xen-scsiback.c               |   8 +-
 include/linux/percpu_ida.h               |  83 -----
 include/target/iscsi/iscsi_target_core.h |   1 +
 include/target/target_core_base.h        |   5 +-
 lib/Makefile                             |   2 +-
 lib/percpu_ida.c                         | 391 -----------------------
 13 files changed, 74 insertions(+), 507 deletions(-)
 delete mode 100644 include/linux/percpu_ida.h
 delete mode 100644 lib/percpu_ida.c

-- 
2.17.0


             reply	other threads:[~2018-05-15 16:00 UTC|newest]

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-15 16:00 Matthew Wilcox [this message]
2018-05-15 16:00 ` Matthew Wilcox
2018-05-15 16:00 ` Matthew Wilcox
2018-05-15 16:00 ` [PATCH 1/2] Convert target drivers to use sbitmap Matthew Wilcox
2018-05-15 16:00 ` Matthew Wilcox
2018-05-15 16:00   ` [1/2] " Matthew Wilcox
2018-05-15 16:00   ` [PATCH 1/2] " Matthew Wilcox
2018-05-15 16:00   ` Matthew Wilcox
2018-05-15 16:11   ` Jens Axboe
2018-05-15 16:11     ` [1/2] " Jens Axboe
2018-05-15 16:11     ` [PATCH 1/2] " Jens Axboe
2018-05-15 16:20     ` Jens Axboe
2018-05-15 16:20     ` Jens Axboe
2018-05-15 16:20       ` [1/2] " Jens Axboe
2018-05-15 16:20       ` [PATCH 1/2] " Jens Axboe
2018-06-12  1:18     ` Jens Axboe
2018-06-12  1:18       ` [1/2] " Jens Axboe
2018-06-12  1:18       ` [PATCH 1/2] " Jens Axboe
2018-06-12  3:06       ` Matthew Wilcox
2018-06-12  3:06         ` [1/2] " Matthew Wilcox
2018-06-12  3:06         ` [PATCH 1/2] " Matthew Wilcox
2018-06-12  3:06         ` Matthew Wilcox
2018-05-15 16:11   ` Jens Axboe
2018-05-16  5:54   ` Felipe Balbi
2018-05-16  5:54     ` [1/2] " Felipe Balbi
2018-05-16  5:54     ` [PATCH 1/2] " Felipe Balbi
2018-05-16 12:47   ` kbuild test robot
2018-05-16 12:47   ` kbuild test robot
2018-05-16 12:47     ` [1/2] " kbuild test robot
2018-05-16 12:47     ` [PATCH 1/2] " kbuild test robot
2018-05-16 12:47   ` [RFC PATCH] iscsit_wait_for_tag() can be static kbuild test robot
2018-05-16 12:47   ` kbuild test robot
2018-05-16 12:47     ` [RFC] " kbuild test robot
2018-05-16 12:47     ` [RFC PATCH] " kbuild test robot
2018-05-16 12:47     ` kbuild test robot
2018-06-12 15:22   ` [PATCH 1/2] Convert target drivers to use sbitmap Bart Van Assche
2018-06-12 15:22     ` [1/2] " Bart Van Assche
2018-06-12 15:22     ` [PATCH 1/2] " Bart Van Assche
2018-06-12 15:22     ` Bart Van Assche
2018-06-12 16:15     ` Matthew Wilcox
2018-06-12 16:15     ` Matthew Wilcox
2018-06-12 16:15       ` [1/2] " Matthew Wilcox
2018-06-12 16:15       ` [PATCH 1/2] " Matthew Wilcox
2018-06-12 16:15       ` Matthew Wilcox
2018-06-12 16:32       ` Bart Van Assche
2018-06-12 16:32         ` [1/2] " Bart Van Assche
2018-06-12 16:32         ` [PATCH 1/2] " Bart Van Assche
2018-06-12 16:32         ` Bart Van Assche
2018-06-12 18:08         ` Matthew Wilcox
2018-06-12 18:08           ` [1/2] " Matthew Wilcox
2018-06-12 18:08           ` [PATCH 1/2] " Matthew Wilcox
2018-06-12 18:08           ` Matthew Wilcox
2018-05-15 16:00 ` [PATCH 2/2] Remove percpu_ida Matthew Wilcox
2018-05-15 16:00 ` Matthew Wilcox
2018-05-15 16:00   ` [2/2] " Matthew Wilcox
2018-05-15 16:00   ` [PATCH 2/2] " Matthew Wilcox
2018-05-15 16:00 [PATCH 0/2] Use sbitmap instead of percpu_ida Matthew Wilcox

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