From: tom.zanussi@intel.com
To: bruce.ashfield@windriver.com, yocto@yoctoproject.org
Subject: [PATCH 1/1][3.2 KERNEL] bsp/emenlow: give up drm_global_mutex on contention in drm_lock()
Date: Wed, 25 Apr 2012 09:11:27 -0500 [thread overview]
Message-ID: <3ab8e8d9f0e9c2c44b6dbf8df84c0c2b03c4167c.1335362402.git.tom.zanussi@intel.com> (raw)
In-Reply-To: <cover.1335362402.git.tom.zanussi@intel.com>
From: Tom Zanussi <tom.zanussi@intel.com>
If drm_lock_take() fails, give up the global ioctl mutex and allow
other locked ioctls in the meantime.
Signed-off-by: Tom Zanussi <tom.zanussi@intel.com>
---
drivers/gpu/drm-psb/drm_lock.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm-psb/drm_lock.c b/drivers/gpu/drm-psb/drm_lock.c
index b8e4a5d..ba6630e 100644
--- a/drivers/gpu/drm-psb/drm_lock.c
+++ b/drivers/gpu/drm-psb/drm_lock.c
@@ -89,7 +89,9 @@ int drm_lock(struct drm_device *dev, void *data, struct drm_file *file_priv)
}
/* Contention */
+ mutex_unlock(&drm_global_mutex);
schedule();
+ mutex_lock(&drm_global_mutex);
if (signal_pending(current)) {
ret = -ERESTARTSYS;
break;
--
1.7.0.4
next prev parent reply other threads:[~2012-04-25 14:11 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-25 14:11 [PATCH 0/1][3.2 KERNEL] standard/default/emenlow update tom.zanussi
2012-04-25 14:11 ` tom.zanussi [this message]
2012-04-25 17:17 ` Bruce Ashfield
2012-04-26 20:05 ` Bruce Ashfield
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