From: Mike Galbraith <umgwanakikbuti@gmail.com>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Thomas Gleixner <tglx@linutronix.de>
Cc: LKML <linux-kernel@vger.kernel.org>,
linux-rt-users <linux-rt-users@vger.kernel.org>,
Steven Rostedt <rostedt@goodmis.org>
Subject: [patch] drivers/zram: Don't disable preemption in zcomp_stream_get/put()
Date: Sun, 16 Oct 2016 05:14:22 +0200 [thread overview]
Message-ID: <1476587662.1538.8.camel@gmail.com> (raw)
In-Reply-To: <20161006085228.jl6rpszdp5c2p2nr@linutronix.de>
In v4.7, the driver switched to percpu compression streams, disabling
preemption (get/put_cpu_ptr()). Use get/put_cpu_light() instead.
Signed-off-by: Mike Galbraith <umgwanakikbuti@gmail.com>
---
drivers/block/zram/zcomp.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/block/zram/zcomp.c
+++ b/drivers/block/zram/zcomp.c
@@ -118,12 +118,12 @@ ssize_t zcomp_available_show(const char
struct zcomp_strm *zcomp_stream_get(struct zcomp *comp)
{
- return *get_cpu_ptr(comp->stream);
+ return *per_cpu_ptr(comp->stream, get_cpu_light());
}
void zcomp_stream_put(struct zcomp *comp)
{
- put_cpu_ptr(comp->stream);
+ put_cpu_light();
}
int zcomp_compress(struct zcomp_strm *zstrm,
next prev parent reply other threads:[~2016-10-16 3:14 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-06 8:52 [ANNOUNCE] 4.8-rt1 Sebastian Andrzej Siewior
2016-10-16 3:08 ` [patch] ftrace: Fix latency trace header alignment Mike Galbraith
2016-10-17 13:23 ` Sebastian Andrzej Siewior
2016-10-16 3:11 ` [patch] drivers,connector: Protect send_msg() with a local lock for RT Mike Galbraith
2016-10-17 14:16 ` Sebastian Andrzej Siewior
2016-10-16 3:14 ` Mike Galbraith [this message]
2016-10-17 14:24 ` [patch] drivers/zram: Don't disable preemption in zcomp_stream_get/put() Sebastian Andrzej Siewior
2016-10-17 16:19 ` Mike Galbraith
2016-10-17 16:29 ` Sebastian Andrzej Siewior
2016-10-17 17:18 ` Mike Galbraith
2016-10-17 17:46 ` Mike Galbraith
2016-10-19 15:56 ` [patch v2] " Mike Galbraith
2016-10-19 16:54 ` Sebastian Andrzej Siewior
2016-10-20 2:59 ` Mike Galbraith
2016-10-20 11:02 ` Sebastian Andrzej Siewior
2016-10-16 3:18 ` [patch ]mm/zs_malloc: Fix bit spinlock replacement Mike Galbraith
2016-10-17 15:15 ` Sebastian Andrzej Siewior
2016-10-17 16:12 ` Mike Galbraith
2016-10-17 16:12 ` Mike Galbraith
2016-10-19 15:50 ` [patch v2 ] mm/zs_malloc: " Mike Galbraith
2016-10-20 10:59 ` Sebastian Andrzej Siewior
2016-10-20 9:34 ` [rfc patch] hotplug: Call mmdrop_delayed() in sched_cpu_dying() if PREEMPT_RT_FULL Mike Galbraith
2016-10-20 11:21 ` Sebastian Andrzej Siewior
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