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From: Boaz Harrosh <boaz@plexistor.com>
To: Christoph Hellwig <hch@lst.de>,
	linux-nvdimm@ml01.01.org, linux-fsdevel@vger.kernel.org,
	linux-kernel@vger.kernel.org, x86@kernel.org, axboe@kernel.dk
Cc: ross.zwisler@linux.intel.com
Subject: [PATCH] pmem: Add prints at module load and unload
Date: Thu, 02 Apr 2015 18:31:10 +0300	[thread overview]
Message-ID: <551D60BE.1070101@plexistor.com> (raw)
In-Reply-To: <1427872339-6688-1-git-send-email-hch@lst.de>

Hi Christoph, Ingo

Please consider this small patch below just a small print at module
load/unload so to know at user systems how things progressed.
As it is now, we know nothing. For any other disk kind we have two
tuns of prints.

---
From: Boaz Harrosh <boaz@plexistor.com>
Date: Thu, 2 Apr 2015 16:43:48 +0300
Subject: [PATCH] pmem: Add prints at module load and unload

When debugging people's systems it is helpful
to see what went on. The load and unload of pmem is
an important event.

The importance is the number of loaded devices and
error status. The exact device's addresses created
we can see from the other prints at e820 so no need
to duplicate this information.

While at it fix up a small issue with rw flags.

Signed-off-by: Boaz Harrosh <boaz@plexistor.com>
---
 drivers/block/pmem.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/block/pmem.c b/drivers/block/pmem.c
index 988f384..3f15fbc 100644
--- a/drivers/block/pmem.c
+++ b/drivers/block/pmem.c
@@ -91,8 +91,9 @@ static int pmem_rw_page(struct block_device *bdev, sector_t sector,
 {
 	struct pmem_device *pmem = bdev->bd_disk->private_data;
 
+	rw &= WRITE;
 	pmem_do_bvec(pmem, page, PAGE_CACHE_SIZE, 0, rw, sector);
-	page_endio(page, rw & WRITE, 0);
+	page_endio(page, rw, 0);
 
 	return 0;
 }
@@ -248,6 +249,9 @@ static int __init pmem_init(void)
 	error = platform_driver_register(&pmem_driver);
 	if (error)
 		unregister_blkdev(pmem_major, "pmem");
+
+	pr_info("pmem: init %d devices => %d\n",
+		atomic_read(&pmem_index), error);
 	return error;
 }
 module_init(pmem_init);
@@ -256,6 +260,7 @@ static void pmem_exit(void)
 {
 	platform_driver_unregister(&pmem_driver);
 	unregister_blkdev(pmem_major, "pmem");
+	pr_info("pmem: exit\n");
 }
 module_exit(pmem_exit);
 
-- 
1.9.3



  parent reply	other threads:[~2015-04-02 15:31 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-04-01  7:12 another pmem variant V3 Christoph Hellwig
2015-04-01  7:12 ` [PATCH 1/2] x86: add support for the non-standard protected e820 type Christoph Hellwig
2015-04-01 14:25   ` [PATCH] SQUASHME: Fixes to e820 handling of pmem Boaz Harrosh
2015-04-02  9:30     ` Christoph Hellwig
2015-04-02  9:37       ` Ingo Molnar
2015-04-02  9:40         ` Christoph Hellwig
2015-04-02 11:18         ` Christoph Hellwig
2015-04-02 11:20       ` Boaz Harrosh
2015-04-02 12:31   ` [tip:x86/pmem] x86/mm: Add support for the non-standard protected e820 type tip-bot for Christoph Hellwig
2015-04-02 19:08     ` Andy Lutomirski
2015-04-02 19:13       ` Ingo Molnar
2015-04-02 19:51         ` Andy Lutomirski
2015-04-16 22:31           ` Andy Lutomirski
2015-04-17  0:55             ` Elliott, Robert (Server Storage)
2015-04-17  0:59               ` Andy Lutomirski
2015-04-02 20:28     ` Yinghai Lu
2015-04-02 20:23   ` [PATCH 1/2] x86: add " Yinghai Lu
2015-04-03 16:14   ` [Linux-nvdimm] " Toshi Kani
2015-04-03 17:12     ` Yinghai Lu
2015-04-03 20:54       ` Toshi Kani
2015-04-04  9:40         ` Ingo Molnar
2015-04-05  7:44           ` Yinghai Lu
2015-04-06  7:27             ` Ingo Molnar
2015-04-06 17:29           ` Toshi Kani
2015-04-06 18:26             ` Yinghai Lu
2015-04-06 18:23               ` Toshi Kani
2015-04-05  9:18       ` Boaz Harrosh
2015-04-05 20:06         ` Yinghai Lu
2015-04-06  7:16           ` Boaz Harrosh
2015-04-06 15:55       ` Christoph Hellwig
2015-04-01  7:12 ` [PATCH 2/2] pmem: add a driver for persistent memory Christoph Hellwig
2015-04-01 15:18   ` Boaz Harrosh
2015-04-02  9:32     ` Christoph Hellwig
2015-04-02 12:31   ` [tip:x86/pmem] drivers/block/pmem: Add " tip-bot for Ross Zwisler
2015-04-02 15:31 ` Boaz Harrosh [this message]
2015-04-02 15:39   ` [Linux-nvdimm] [PATCH] pmem: Add prints at module load and unload Dan Williams
2015-04-02 15:47     ` Boaz Harrosh
2015-04-02 16:01       ` Dan Williams
2015-04-02 16:44         ` Christoph Hellwig
2015-04-05  8:50           ` Boaz Harrosh
2015-04-07 15:19             ` Christoph Hellwig
2015-04-07 15:34               ` Boaz Harrosh
2015-04-07 15:46 ` [PATCH A+B] " Boaz Harrosh
2015-04-07 15:47   ` [PATCH 1A] pmem: Add prints at pmem_probe/remove Boaz Harrosh
2015-04-07 15:47   ` [PATCH 1B] pmem: Add prints at module load and unload Boaz Harrosh
2015-04-13  9:05   ` [PATCH A+B] " Greg KH
2015-04-13 12:05     ` Boaz Harrosh
2015-04-13 12:36       ` Greg KH
2015-04-13 13:20         ` Boaz Harrosh
2015-04-13 13:36           ` Greg KH

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