lkml.org 
[lkml]   [2016]   [May]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 2/3] x86-32: Remove GET_THREAD_INFO from entry code
Date
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>
---
arch/x86/entry/entry_32.S | 3 ---
1 file changed, 3 deletions(-)

diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_32.S
index c84d99b..983e5d3 100644
--- 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
--
2.5.5
\
 
 \ /
  Last update: 2016-05-05 05:01    [W:0.981 / U:1.116 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site