x86/entry/32: Remove GET_THREAD_INFO() from entry code

The entry code used to cache the thread_info pointer in the EBP register,
but all the code that used it has been moved to C.  Remove the unused
code to get the pointer.

Signed-off-by: Brian Gerst <brgerst@gmail.com>
Acked-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Borislav Petkov <bp@suse.de>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1462416278-11974-3-git-send-email-brgerst@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_32.S
index c84d99bfff94e2dc66f1e03cf752459dc8489022..983e5d3a0d271c387e24371ddc3fcd6e7110a27d 100644 (file)
--- a/arch/x86/entry/entry_32.S
+++ b/arch/x86/entry/entry_32.S
@@ -207,7 +207,6 @@
 ENTRY(ret_from_fork)
        pushl   %eax
        call    schedule_tail
-       GET_THREAD_INFO(%ebp)
        popl    %eax
 
        /* When we fork, we trace the syscall return in the child, too. */
@@ -219,7 +218,6 @@ END(ret_from_fork)
 ENTRY(ret_from_kernel_thread)
        pushl   %eax
        call    schedule_tail
-       GET_THREAD_INFO(%ebp)
        popl    %eax
        movl    PT_EBP(%esp), %eax
        call    *PT_EBX(%esp)
@@ -247,7 +245,6 @@ ENDPROC(ret_from_kernel_thread)
 ret_from_exception:
        preempt_stop(CLBR_ANY)
 ret_from_intr:
-       GET_THREAD_INFO(%ebp)
 #ifdef CONFIG_VM86
        movl    PT_EFLAGS(%esp), %eax           # mix EFLAGS and CS
        movb    PT_CS(%esp), %al