Skip to main content

Browse the archive

https://github.com/torvalds/linux
17 May 2024, 11:00:25 UTC
Revision e91abf80a0998f326107874c88d549f94839f13c authored by Michel Dänzer on 12 June 2013, 09:58:44 UTC, committed by Dave Airlie on 07 August 2013, 23:50:25 UTC 
drm: Don't pass negative delta to ktime_sub_ns()
 
It takes an unsigned value. This happens not to blow up on 64-bit
architectures, but it does on 32-bit, causing
drm_calc_vbltimestamp_from_scanoutpos() to calculate totally bogus
timestamps for vblank events. Which in turn causes e.g. gnome-shell to
hang after a DPMS off cycle with current xf86-video-ati Git.

[airlied: regression introduced in drm: use monotonic time in drm_calc_vbltimestamp_from_scanoutpos]

Cc: stable@vger.kernel.org
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=59339
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=59836
Tested-by: shui yangwei <yangweix.shui@intel.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
1 parent 16d5b27
Raw File
Tip revision: e91abf80a0998f326107874c88d549f94839f13c authored by Michel Dänzer on 12 June 2013, 09:58:44 UTC
drm: Don't pass negative delta to ktime_sub_ns()
Tip revision: e91abf8
smpboot.h 
#ifndef SMPBOOT_H
#define SMPBOOT_H

struct task_struct;

#ifdef CONFIG_GENERIC_SMP_IDLE_THREAD
struct task_struct *idle_thread_get(unsigned int cpu);
void idle_thread_set_boot_cpu(void);
void idle_threads_init(void);
#else
static inline struct task_struct *idle_thread_get(unsigned int cpu) { return NULL; }
static inline void idle_thread_set_boot_cpu(void) { }
static inline void idle_threads_init(void) { }
#endif

int smpboot_create_threads(unsigned int cpu);
void smpboot_park_threads(unsigned int cpu);
void smpboot_unpark_threads(unsigned int cpu);

#endif
back to top