Commit-ID:  4bd5bf8c85e6bca5be9e7c4b3d7ad1942ae323f3
Gitweb:     http://git.kernel.org/tip/4bd5bf8c85e6bca5be9e7c4b3d7ad1942ae323f3
Author:     Oleg Nesterov <[email protected]>
AuthorDate: Fri, 13 Mar 2015 19:27:16 +0100
Committer:  Ingo Molnar <[email protected]>
CommitDate: Mon, 23 Mar 2015 10:13:59 +0100

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 <[email protected]>
Signed-off-by: Borislav Petkov <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Fenghua Yu <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Pekka Riikonen <[email protected]>
Cc: Quentin Casasnovas <[email protected]>
Cc: Rik van Riel <[email protected]>
Cc: Suresh Siddha <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
---
 arch/x86/kernel/xsave.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/x86/kernel/xsave.c b/arch/x86/kernel/xsave.c
index 65c29b0..ada8df7b 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();
 }
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Reply via email to