diff options
| author | Oleg Nesterov <oleg@redhat.com> | 2015-03-13 19:27:16 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-03-23 10:13:59 +0100 |
| commit | 4bd5bf8c85e6bca5be9e7c4b3d7ad1942ae323f3 (patch) | |
| tree | baa3f1d28013f4575ff94addf16d5e5515d658cb | |
| parent | b85e67d1483c72b77d1bdc265aa8ba91590794c1 (diff) | |
| download | lwn-4bd5bf8c85e6bca5be9e7c4b3d7ad1942ae323f3.tar.gz lwn-4bd5bf8c85e6bca5be9e7c4b3d7ad1942ae323f3.zip | |
x86/fpu: Don't allocate fpu->state for swapper/0
Now that kthreads do not use FPU until they get executed, swapper/0
doesn't need to allocate fpu->state.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Pekka Riikonen <priikone@iki.fi>
Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Suresh Siddha <sbsiddha@gmail.com>
Link: http://lkml.kernel.org/r/20150313182716.GB8249@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
| -rw-r--r-- | arch/x86/kernel/xsave.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/x86/kernel/xsave.c b/arch/x86/kernel/xsave.c index 65c29b070e09..ada8df7b89c0 100644 --- a/arch/x86/kernel/xsave.c +++ b/arch/x86/kernel/xsave.c @@ -680,8 +680,6 @@ void xsave_init(void) static inline void __init eager_fpu_init_bp(void) { - current->thread.fpu.state = - alloc_bootmem_align(xstate_size, __alignof__(struct xsave_struct)); if (!init_xstate_buf) setup_init_fpu_buf(); } |