diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-28 09:49:56 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-28 09:49:56 -0700 |
| commit | fb8b00675eb6462aacab56bca31ed6107bda5314 (patch) | |
| tree | cd3c081dca9ea37d2ddc5e13b55fb4baeccf5452 /arch/microblaze/kernel | |
| parent | b48b2c3e50433ff6f7e46186daa7f986bd960215 (diff) | |
| parent | d5c15f17844b8883bc13b61a8ae114f0d3d59cdd (diff) | |
Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblaze
Pull microblaze changes from Michal Simek.
* 'next' of git://git.monstr.eu/linux-2.6-microblaze:
microblaze: Setup correct pointer to TLS area
microblaze: Add TLS support to sys_clone
microblaze: ftrace: Pass the first calling instruction for dynamic ftrace
microblaze: Port OOM changes to do_page_fault
microblaze: Do not select GENERIC_GPIO by default
Diffstat (limited to 'arch/microblaze/kernel')
| -rw-r--r-- | arch/microblaze/kernel/entry.S | 7 | ||||
| -rw-r--r-- | arch/microblaze/kernel/mcount.S | 2 | ||||
| -rw-r--r-- | arch/microblaze/kernel/process.c | 6 |
3 files changed, 10 insertions, 5 deletions
diff --git a/arch/microblaze/kernel/entry.S b/arch/microblaze/kernel/entry.S index daff9e5e4a1..03f7b8ce6b6 100644 --- a/arch/microblaze/kernel/entry.S +++ b/arch/microblaze/kernel/entry.S @@ -492,10 +492,11 @@ C_ENTRY(sys_clone): bnei r6, 1f; /* See if child SP arg (arg 1) is 0. */ lwi r6, r1, PT_R1; /* If so, use paret's stack ptr */ 1: addik r7, r1, 0; /* Arg 2: parent context */ - add r8, r0, r0; /* Arg 3: (unused) */ - add r9, r0, r0; /* Arg 4: (unused) */ + lwi r9, r1, PT_R8; /* parent tid. */ + lwi r10, r1, PT_R9; /* child tid. */ + /* do_fork will pick up TLS from regs->r10. */ brid do_fork /* Do real work (tail-call) */ - add r10, r0, r0; /* Arg 5: (unused) */ + add r8, r0, r0; /* Arg 3: (unused) */ C_ENTRY(sys_execve): brid microblaze_execve; /* Do real work (tail-call).*/ diff --git a/arch/microblaze/kernel/mcount.S b/arch/microblaze/kernel/mcount.S index e7eaa7a8cbd..fc1e1322ce4 100644 --- a/arch/microblaze/kernel/mcount.S +++ b/arch/microblaze/kernel/mcount.S @@ -138,7 +138,7 @@ NOALIGN_ENTRY(ftrace_call) #endif /* CONFIG_DYNAMIC_FTRACE */ /* static normal trace */ lwi r6, r1, 120; /* MS: load parent addr */ - addik r5, r15, 0; /* MS: load current function addr */ + addik r5, r15, -4; /* MS: load current function addr */ /* MS: here is dependency on previous code */ brald r15, r20; /* MS: jump to ftrace handler */ nop; diff --git a/arch/microblaze/kernel/process.c b/arch/microblaze/kernel/process.c index 883b92789cd..1944e00f07e 100644 --- a/arch/microblaze/kernel/process.c +++ b/arch/microblaze/kernel/process.c @@ -182,8 +182,12 @@ int copy_thread(unsigned long clone_flags, unsigned long usp, #endif ti->cpu_context.r15 = (unsigned long)ret_from_fork - 8; + /* + * r21 is the thread reg, r10 is 6th arg to clone + * which contains TLS area + */ if (clone_flags & CLONE_SETTLS) - ; + childregs->r21 = childregs->r10; return 0; } |