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| author | Dave Hansen <dave.hansen@linux.intel.com> | 2015-06-07 21:37:02 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-06-09 13:24:30 +0300 |
| commit | 46a6e0cf1c6665a8e867d8f7798d7a3538633f03 (patch) | |
| tree | 85b142ed094594330ee5e170fc92463d432e9097 /arch/x86/include/asm/processor.h | |
| parent | a84eeaa96b36a03188e1423349669c108d3a4bd7 (diff) | |
| download | linux-46a6e0cf1c6665a8e867d8f7798d7a3538633f03.tar.xz | |
x86/mpx: Clean up the code by not passing a task pointer around when unnecessary
The MPX code can only work on the current task. You can not,
for instance, enable MPX management in another process or
thread. You can also not handle a fault for another process or
thread.
Despite this, we pass a task_struct around prolifically. This
patch removes all of the task struct passing for code paths
where the code can not deal with another task (which turns out
to be all of them).
This has no functional changes. It's just a cleanup.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Dave Hansen <dave@sr71.net>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: bp@alien8.de
Link: http://lkml.kernel.org/r/20150607183702.6A81DA2C@viggo.jf.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/processor.h')
| -rw-r--r-- | arch/x86/include/asm/processor.h | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 8e04f51d6bea..53dbd2b4f1d8 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -802,18 +802,18 @@ extern int get_tsc_mode(unsigned long adr); extern int set_tsc_mode(unsigned int val); /* Register/unregister a process' MPX related resource */ -#define MPX_ENABLE_MANAGEMENT(tsk) mpx_enable_management((tsk)) -#define MPX_DISABLE_MANAGEMENT(tsk) mpx_disable_management((tsk)) +#define MPX_ENABLE_MANAGEMENT() mpx_enable_management() +#define MPX_DISABLE_MANAGEMENT() mpx_disable_management() #ifdef CONFIG_X86_INTEL_MPX -extern int mpx_enable_management(struct task_struct *tsk); -extern int mpx_disable_management(struct task_struct *tsk); +extern int mpx_enable_management(void); +extern int mpx_disable_management(void); #else -static inline int mpx_enable_management(struct task_struct *tsk) +static inline int mpx_enable_management(void) { return -EINVAL; } -static inline int mpx_disable_management(struct task_struct *tsk) +static inline int mpx_disable_management(void) { return -EINVAL; } |