linux-stable.git/arch/c6x/kernel/entry.S, branch linux-3.7.y

c6x: fix misleading comment

2012-11-26T23:14:00+00:00

A comment in entry.S incorrectly stated that interrupt vectors
called __do_IRQ() and that int6 vector was used for syscalls.
Both statements are incorrect for the current kernel, so this
patch cleans up the wording to reflect current reality.

Signed-off-by: Mark Salter

c6x: run do_notify_resume with interrupts enabled

2012-11-26T23:06:13+00:00

C6x was mistakenly running do_notify_resume with interrupts disabled.
This would triggerlead to a warning in local_bh_enable() because interrupts
were disabled:

------------[ cut here ]------------
WARNING: at /es/linux/linux-next/kernel/softirq.c:160 local_bh_enable+0x5c/0x10c()
Modules linked in:

             e02f384d e002cda8 e02f3469 e02f384d 000000a0 e00363fc e01cce58 e5005c00
             e0327986 00000000 e63c0aec 00000164 e00363fc 00000000 fffffffe e5005c00
             e61fde00 e0268184 00000134 e01c91dc 00000001 fffffffe 00000000 10000100
             e01c80e4 e5005c00 00000000 00000000 00000000 e63c0aec e526ce00 10000100
             e628f920 e63c0a88 e6010410 e6449750 e5005c20 00000000 00000000 e63c0a80
             e5005c20 e01c8590 e63c0a80 e5005c20 e63c0aec e00a0554 e009c758 e639e860
 irq_spurious_proc_fops+0x6ad/0x3438
 warn_slowpath_common+0x8c/0xb8
 irq_spurious_proc_fops+0x2c9/0x3438
 irq_spurious_proc_fops+0x6ad/0x3438
 local_bh_enable+0x5c/0x10c
 sk_alloc+0x34/0xa4
 local_bh_enable+0x5c/0x10c
 unix_release_sock+0x5c/0x2a0
 sys_connect+0x94/0xd4
 sock_release+0x38/0x104
 sock_close+0x3c/0x54
 __fput+0x154/0x2ec
 filp_close+0xc0/0xe4
 task_work_run+0xdc/0x12c
 sys_close+0x2c/0x74
 resume_userspace+0x0/0x30
---[ end trace a70cbd610ae1f6b4 ]---

This patch enables interrupts before calling do_notify_resume().

Signed-off-by: Mark Salter

c6x: switch to generic sys_execve

2012-10-01T04:59:09+00:00

Signed-off-by: Mark Salter 
Signed-off-by: Al Viro

c6x: switch to generic kernel_execve

2012-10-01T04:59:08+00:00

Signed-off-by: Mark Salter 
Signed-off-by: Al Viro

c6x: add ret_from_kernel_thread(), simplify kernel_thread()

2012-10-01T04:59:08+00:00

Signed-off-by: Mark Salter 
Signed-off-by: Al Viro

C6X: remove dead code from entry.S

2012-03-16T13:27:57+00:00

The ENDPROC() on sys_fadvise64_c6x() in arch/c6x/kernel/entry.S is
outside of the conditional block with the matching ENTRY() macro. This
leads a newer (v2.22 vs. v2.20) assembler to complain:

  /tmp/ccGZBaPT.s: Assembler messages:
  /tmp/ccGZBaPT.s: Error: .size expression for sys_fadvise64_c6x does not evaluate to a constant

The conditional block became dead code when c6x switched to generic
unistd.h and should be removed along with the offending ENDPROC().

Signed-off-by: Mark Salter 
Acked-by: David Howells

C6X: build infrastructure

2011-10-06T23:48:02+00:00

Original port to early 2.6 kernel using TI COFF toolchain.
Brought up to date by Mark Salter 

Signed-off-by: Aurelien Jacquiot 
Signed-off-by: Mark Salter 
Acked-by: Arnd Bergmann