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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-02-20 19:34:10 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-02-20 19:34:10 -0800 |
| commit | 27e74da9800289e69ba907777df1e2085231eff7 (patch) | |
| tree | 3b01385191da0722f747529908a902b169fae805 /arch/x86 | |
| parent | 8ebbfb49574818f07a25bc119b1bbdf1c2853a39 (diff) | |
| download | linux-27e74da9800289e69ba907777df1e2085231eff7.tar.gz linux-27e74da9800289e69ba907777df1e2085231eff7.tar.bz2 linux-27e74da9800289e69ba907777df1e2085231eff7.zip | |
i387: export 'fpu_owner_task' per-cpu variable
(And define it properly for x86-32, which had its 'current_task'
declaration in separate from x86-64)
Bitten by my dislike for modules on the machines I use, and the fact
that apparently nobody else actually wanted to test the patches I sent
out.
Snif. Nobody else cares.
Anyway, we probably should uninline the 'kernel_fpu_begin()' function
that is what modules actually use and that references this, but this is
the minimal fix for now.
Reported-by: Josh Boyer <jwboyer@gmail.com>
Reported-and-tested-by: Jongman Heo <jongman.heo@samsung.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kernel/cpu/common.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index b667148dfad7..c0f7d68d318f 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1045,6 +1045,7 @@ DEFINE_PER_CPU(char *, irq_stack_ptr) = DEFINE_PER_CPU(unsigned int, irq_count) = -1; DEFINE_PER_CPU(struct task_struct *, fpu_owner_task); +EXPORT_PER_CPU_SYMBOL(fpu_owner_task); /* * Special IST stacks which the CPU switches to when it calls @@ -1113,6 +1114,8 @@ void debug_stack_reset(void) DEFINE_PER_CPU(struct task_struct *, current_task) = &init_task; EXPORT_PER_CPU_SYMBOL(current_task); +DEFINE_PER_CPU(struct task_struct *, fpu_owner_task); +EXPORT_PER_CPU_SYMBOL(fpu_owner_task); #ifdef CONFIG_CC_STACKPROTECTOR DEFINE_PER_CPU_ALIGNED(struct stack_canary, stack_canary); |