LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
To: Andrew Morton <akpm@linux-foundation.org>,
	Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>,
	linux-kernel@vger.kernel.org,
	Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
	Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Subject: [PATCH 7/8] zram: report every added and removed device
Date: Tue,  3 Mar 2015 21:49:49 +0900	[thread overview]
Message-ID: <1425386990-6339-8-git-send-email-sergey.senozhatsky@gmail.com> (raw)
In-Reply-To: <1425386990-6339-1-git-send-email-sergey.senozhatsky@gmail.com>

With dynamic device creation/removal printing num_devices in zram_init()
doesn't make a lot of sense, as well as printing the number of destroyed
devices in destroy_devices(). Print per-device action (added/removed) in
zram_add() and zram_remove() instead.

Example:

[ 3645.259652] zram: Added device: zram5
[ 3646.152074] zram: Added device: zram6
[ 3650.585012] zram: Removed device: zram5
[ 3655.845584] zram: Added device: zram8
[ 3660.975223] zram: Removed device: zram6

Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
---
 drivers/block/zram/zram_drv.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index f1182a7..1662fd1 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -1149,6 +1149,8 @@ static int zram_add(int device_id)
 	strlcpy(zram->compressor, default_compressor, sizeof(zram->compressor));
 	zram->meta = NULL;
 	zram->max_comp_streams = 1;
+
+	pr_info("Added device: %s\n", zram->disk->disk_name);
 	return 0;
 
 out_free_disk:
@@ -1175,6 +1177,8 @@ static void zram_remove(struct zram *zram)
 	zram_reset_device_internal(zram);
 	idr_remove(&zram_index_idr, zram->disk->first_minor);
 	blk_cleanup_queue(zram->disk->queue);
+
+	pr_info("Removed device: %s\n", zram->disk->disk_name);
 	del_gendisk(zram->disk);
 	put_disk(zram->disk);
 	kfree(zram);
@@ -1295,7 +1299,6 @@ static void destroy_devices(void)
 	idr_for_each(&zram_index_idr, &zram_exit_cb, NULL);
 	idr_destroy(&zram_index_idr);
 	unregister_blkdev(zram_major, "zram");
-	pr_info("Destroyed device(s)\n");
 }
 
 static int __init zram_init(void)
@@ -1323,7 +1326,6 @@ static int __init zram_init(void)
 			goto out_error;
 	}
 
-	pr_info("Created %u device(s)\n", num_devices);
 	return 0;
 
 out_error:
-- 
2.3.1.167.g7f4ba4b


  parent reply	other threads:[~2015-03-03 12:50 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-03 12:49 [PATCHv3 0/8] introduce dynamic device creation/removal Sergey Senozhatsky
2015-03-03 12:49 ` [PATCH 1/8] zram: cosmetic ZRAM_ATTR_RO code formatting tweak Sergey Senozhatsky
2015-03-03 12:49 ` [PATCH 2/8] zram: use idr instead of `zram_devices' array Sergey Senozhatsky
2015-03-03 22:01   ` Andrew Morton
2015-03-04  0:21     ` Sergey Senozhatsky
2015-03-04  7:06   ` Minchan Kim
2015-03-04  7:34     ` Sergey Senozhatsky
2015-03-04  7:49     ` Sergey Senozhatsky
2015-03-05  0:59       ` Minchan Kim
2015-03-03 12:49 ` [PATCH 3/8] zram: factor out device reset from reset_store() Sergey Senozhatsky
2015-03-05  2:28   ` Minchan Kim
2015-03-03 12:49 ` [PATCH 4/8] zram: reorganize code layout Sergey Senozhatsky
2015-03-03 12:49 ` [PATCH 5/8] zram: add dynamic device add/remove functionality Sergey Senozhatsky
2015-03-03 22:01   ` Andrew Morton
2015-03-04  0:18     ` Sergey Senozhatsky
2015-03-04  7:10   ` Minchan Kim
2015-03-04  7:29     ` Sergey Senozhatsky
2015-03-04  8:19       ` Sergey Senozhatsky
2015-03-04  8:36         ` Sergey Senozhatsky
2015-03-03 12:49 ` [PATCH 6/8] zram: remove max_num_devices limitation Sergey Senozhatsky
2015-03-03 12:49 ` Sergey Senozhatsky [this message]
2015-03-03 12:49 ` [PATCH 8/8] zram: trivial: correct flag operations comment Sergey Senozhatsky
2015-04-15 21:37 ` [PATCHv3 0/8] introduce dynamic device creation/removal Andrew Morton
2015-04-15 23:40   ` Minchan Kim
2015-04-16  0:30     ` Sergey Senozhatsky
2015-04-16  0:47   ` Sergey Senozhatsky

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1425386990-6339-8-git-send-email-sergey.senozhatsky@gmail.com \
    --to=sergey.senozhatsky@gmail.com \
    --cc=akpm@linux-foundation.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=minchan@kernel.org \
    --cc=ngupta@vflare.org \
    --cc=sergey.senozhatsky.work@gmail.com \
    --subject='Re: [PATCH 7/8] zram: report every added and removed device' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).