diff options
author | Christophe Leroy <christophe.leroy@c-s.fr> | 2019-01-12 09:55:50 +0000 |
---|---|---|
committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-02-23 22:31:40 +1100 |
commit | c911d2e128e8ab7e789a5488dcb63ae9fe130aca (patch) | |
tree | aaefcd2c47d20d12d908d868def9d79433686d2e /arch/powerpc/kernel | |
parent | f7354ccac844da7b1af8cc4f09da330fa3e960e4 (diff) | |
download | linux-c911d2e128e8ab7e789a5488dcb63ae9fe130aca.tar.bz2 |
powerpc/64: Replace CURRENT_THREAD_INFO with PACA_THREAD_INFO
Now that current_thread_info is located at the beginning of 'current'
task struct, CURRENT_THREAD_INFO macro is not really needed any more.
This patch replaces it by loads of the value at PACA_THREAD_INFO(r13).
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
[mpe: Add PACA_THREAD_INFO rather than using PACACURRENT]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel')
-rw-r--r-- | arch/powerpc/kernel/asm-offsets.c | 2 | ||||
-rw-r--r-- | arch/powerpc/kernel/entry_64.S | 10 | ||||
-rw-r--r-- | arch/powerpc/kernel/exceptions-64e.S | 2 | ||||
-rw-r--r-- | arch/powerpc/kernel/exceptions-64s.S | 2 | ||||
-rw-r--r-- | arch/powerpc/kernel/idle_book3e.S | 2 | ||||
-rw-r--r-- | arch/powerpc/kernel/idle_power4.S | 2 | ||||
-rw-r--r-- | arch/powerpc/kernel/trace/ftrace_64_mprofile.S | 6 |
7 files changed, 14 insertions, 12 deletions
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c index 8b688b19776a..86a61e5f8285 100644 --- a/arch/powerpc/kernel/asm-offsets.c +++ b/arch/powerpc/kernel/asm-offsets.c @@ -182,6 +182,8 @@ int main(void) OFFSET(PACAPROCSTART, paca_struct, cpu_start); OFFSET(PACAKSAVE, paca_struct, kstack); OFFSET(PACACURRENT, paca_struct, __current); + DEFINE(PACA_THREAD_INFO, offsetof(struct paca_struct, __current) + + offsetof(struct task_struct, thread_info)); OFFSET(PACASAVEDMSR, paca_struct, saved_msr); OFFSET(PACAR1, paca_struct, saved_r1); OFFSET(PACATOC, paca_struct, kernel_toc); diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index 21f1cb4d464e..15c67d2c0534 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -166,7 +166,7 @@ system_call: /* label this so stack traces look sane */ li r10,IRQS_ENABLED std r10,SOFTE(r1) - CURRENT_THREAD_INFO(r11, r1) + ld r11, PACA_THREAD_INFO(r13) ld r10,TI_FLAGS(r11) andi. r11,r10,_TIF_SYSCALL_DOTRACE bne .Lsyscall_dotrace /* does not return */ @@ -213,7 +213,7 @@ system_call: /* label this so stack traces look sane */ ld r3,RESULT(r1) #endif - CURRENT_THREAD_INFO(r12, r1) + ld r12, PACA_THREAD_INFO(r13) ld r8,_MSR(r1) #ifdef CONFIG_PPC_BOOK3S @@ -346,7 +346,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR) /* Repopulate r9 and r10 for the syscall path */ addi r9,r1,STACK_FRAME_OVERHEAD - CURRENT_THREAD_INFO(r10, r1) + ld r10, PACA_THREAD_INFO(r13) ld r10,TI_FLAGS(r10) cmpldi r0,NR_syscalls @@ -740,7 +740,7 @@ _GLOBAL(ret_from_except_lite) mtmsrd r10,1 /* Update machine state */ #endif /* CONFIG_PPC_BOOK3E */ - CURRENT_THREAD_INFO(r9, r1) + ld r9, PACA_THREAD_INFO(r13) ld r3,_MSR(r1) #ifdef CONFIG_PPC_BOOK3E ld r10,PACACURRENT(r13) @@ -854,7 +854,7 @@ resume_kernel: 1: bl preempt_schedule_irq /* Re-test flags and eventually loop */ - CURRENT_THREAD_INFO(r9, r1) + ld r9, PACA_THREAD_INFO(r13) ld r4,TI_FLAGS(r9) andi. r0,r4,_TIF_NEED_RESCHED bne 1b diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S index 20f14996281d..4549ce8d4637 100644 --- a/arch/powerpc/kernel/exceptions-64e.S +++ b/arch/powerpc/kernel/exceptions-64e.S @@ -493,7 +493,7 @@ exc_##n##_bad_stack: \ * interrupts happen before the wait instruction. */ #define CHECK_NAPPING() \ - CURRENT_THREAD_INFO(r11, r1); \ + ld r11, PACA_THREAD_INFO(r13); \ ld r10,TI_LOCAL_FLAGS(r11); \ andi. r9,r10,_TLF_NAPPING; \ beq+ 1f; \ diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 9e253ce27e08..b179b8b5d3f0 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -1629,7 +1629,7 @@ do_hash_page: ori r0,r0,DSISR_BAD_FAULT_64S@l and. r0,r4,r0 /* weird error? */ bne- handle_page_fault /* if not, try to insert a HPTE */ - CURRENT_THREAD_INFO(r11, r1) + ld r11, PACA_THREAD_INFO(r13) lwz r0,TI_PREEMPT(r11) /* If we're in an "NMI" */ andis. r0,r0,NMI_MASK@h /* (i.e. an irq when soft-disabled) */ bne 77f /* then don't call hash_page now */ diff --git a/arch/powerpc/kernel/idle_book3e.S b/arch/powerpc/kernel/idle_book3e.S index 4e0d94d02030..31e732c378ad 100644 --- a/arch/powerpc/kernel/idle_book3e.S +++ b/arch/powerpc/kernel/idle_book3e.S @@ -63,7 +63,7 @@ _GLOBAL(\name) 1: /* Let's set the _TLF_NAPPING flag so interrupts make us return * to the right spot */ - CURRENT_THREAD_INFO(r11, r1) + ld r11, PACACURRENT(r13) ld r10,TI_LOCAL_FLAGS(r11) ori r10,r10,_TLF_NAPPING std r10,TI_LOCAL_FLAGS(r11) diff --git a/arch/powerpc/kernel/idle_power4.S b/arch/powerpc/kernel/idle_power4.S index a09b3c7ca176..a2fdb0a34b75 100644 --- a/arch/powerpc/kernel/idle_power4.S +++ b/arch/powerpc/kernel/idle_power4.S @@ -68,7 +68,7 @@ BEGIN_FTR_SECTION DSSALL sync END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC) - CURRENT_THREAD_INFO(r9, r1) + ld r9, PACA_THREAD_INFO(r13) ld r8,TI_LOCAL_FLAGS(r9) /* set napping bit */ ori r8,r8,_TLF_NAPPING /* so when we take an exception */ std r8,TI_LOCAL_FLAGS(r9) /* it will return to our caller */ diff --git a/arch/powerpc/kernel/trace/ftrace_64_mprofile.S b/arch/powerpc/kernel/trace/ftrace_64_mprofile.S index 32476a6e4e9c..01b1224add49 100644 --- a/arch/powerpc/kernel/trace/ftrace_64_mprofile.S +++ b/arch/powerpc/kernel/trace/ftrace_64_mprofile.S @@ -229,7 +229,7 @@ ftrace_call: * - r0, r11 & r12 are free */ livepatch_handler: - CURRENT_THREAD_INFO(r12, r1) + ld r12, PACA_THREAD_INFO(r13) /* Allocate 3 x 8 bytes */ ld r11, TI_livepatch_sp(r12) @@ -256,7 +256,7 @@ livepatch_handler: * restore it. */ - CURRENT_THREAD_INFO(r12, r1) + ld r12, PACA_THREAD_INFO(r13) ld r11, TI_livepatch_sp(r12) @@ -273,7 +273,7 @@ livepatch_handler: ld r2, -24(r11) /* Pop livepatch stack frame */ - CURRENT_THREAD_INFO(r12, r1) + ld r12, PACA_THREAD_INFO(r13) subi r11, r11, 24 std r11, TI_livepatch_sp(r12) |