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| author | Julien Thierry <julien.thierry@arm.com> | 2019-02-22 10:32:50 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2019-02-26 17:57:59 +0100 |
| commit | 4caf8758b60b6f7f9773fd1d265cb5a7cf935c97 (patch) | |
| tree | 94cfb17194e4b36aef489e9564cf7c8d63fb742d /arch/arm64/include/asm | |
| parent | arm64: Remove documentation about TIF_USEDFPU (diff) | |
| download | linux-4caf8758b60b6f7f9773fd1d265cb5a7cf935c97.tar.xz linux-4caf8758b60b6f7f9773fd1d265cb5a7cf935c97.zip | |
arm64: Rename get_thread_info()
The assembly macro get_thread_info() actually returns a task_struct and is
analogous to the current/get_current macro/function.
While it could be argued that thread_info sits at the start of
task_struct and the intention could have been to return a thread_info,
instances of loads from/stores to the address obtained from
get_thread_info() use offsets that are generated with
offsetof(struct task_struct, [...]).
Rename get_thread_info() to state it returns a task_struct.
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/include/asm')
| -rw-r--r-- | arch/arm64/include/asm/asm-uaccess.h | 2 | ||||
| -rw-r--r-- | arch/arm64/include/asm/assembler.h | 6 |
2 files changed, 4 insertions, 4 deletions
diff --git a/arch/arm64/include/asm/asm-uaccess.h b/arch/arm64/include/asm/asm-uaccess.h index 4128bec033f6..f74909ba29bd 100644 --- a/arch/arm64/include/asm/asm-uaccess.h +++ b/arch/arm64/include/asm/asm-uaccess.h @@ -24,7 +24,7 @@ .endm .macro __uaccess_ttbr0_enable, tmp1, tmp2 - get_thread_info \tmp1 + get_current_task \tmp1 ldr \tmp1, [\tmp1, #TSK_TI_TTBR0] // load saved TTBR0_EL1 mrs \tmp2, ttbr1_el1 extr \tmp2, \tmp2, \tmp1, #48 diff --git a/arch/arm64/include/asm/assembler.h b/arch/arm64/include/asm/assembler.h index 7acf2436b578..9c5c876a9ff2 100644 --- a/arch/arm64/include/asm/assembler.h +++ b/arch/arm64/include/asm/assembler.h @@ -528,9 +528,9 @@ USER(\label, ic ivau, \tmp2) // invalidate I line PoU .endm /* - * Return the current thread_info. + * Return the current task_struct. */ - .macro get_thread_info, rd + .macro get_current_task, rd mrs \rd, sp_el0 .endm @@ -713,7 +713,7 @@ USER(\label, ic ivau, \tmp2) // invalidate I line PoU .macro if_will_cond_yield_neon #ifdef CONFIG_PREEMPT - get_thread_info x0 + get_current_task x0 ldr x0, [x0, #TSK_TI_PREEMPT] sub x0, x0, #PREEMPT_DISABLE_OFFSET cbz x0, .Lyield_\@ |