diff options
author | Kevin Hilman <khilman@linaro.org> | 2015-06-16 15:29:36 -0700 |
---|---|---|
committer | Kevin Hilman <khilman@linaro.org> | 2015-06-16 15:29:36 -0700 |
commit | b0477f5f8ec85bf8a82f6aa6eee308d72c418032 (patch) | |
tree | d520be10a261f418dbf4539f1d2b5d48d74ba0d3 /arch/arm/kernel | |
parent | 13a29d9ad242f0bf3b31afe812c81558d54892de (diff) | |
parent | 9a004a75a3305fbd3c253f38cd0788164c4fbd56 (diff) |
Merge branch 'linux-linaro-lsk-v3.18' into linux-linaro-lsk-v3.18-androidlsk-v3.18-15.07-android
Diffstat (limited to 'arch/arm/kernel')
-rw-r--r-- | arch/arm/kernel/Makefile | 1 | ||||
-rw-r--r-- | arch/arm/kernel/entry-common.S | 4 | ||||
-rw-r--r-- | arch/arm/kernel/hibernate.c | 5 | ||||
-rw-r--r-- | arch/arm/kernel/iwmmxt.S | 13 | ||||
-rw-r--r-- | arch/arm/kernel/process.c | 10 | ||||
-rw-r--r-- | arch/arm/kernel/reboot.h | 6 |
6 files changed, 34 insertions, 5 deletions
diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile index 03120e656aea..2ecc7d15bc09 100644 --- a/arch/arm/kernel/Makefile +++ b/arch/arm/kernel/Makefile @@ -84,6 +84,7 @@ obj-$(CONFIG_CPU_PJ4B) += pj4-cp0.o obj-$(CONFIG_IWMMXT) += iwmmxt.o obj-$(CONFIG_PERF_EVENTS) += perf_regs.o obj-$(CONFIG_HW_PERF_EVENTS) += perf_event.o perf_event_cpu.o +CFLAGS_pj4-cp0.o := -marm AFLAGS_iwmmxt.o := -Wa,-mcpu=iwmmxt obj-$(CONFIG_ARM_CPU_TOPOLOGY) += topology.o diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S index 6bb09d4abdea..eb6f1927b2c7 100644 --- a/arch/arm/kernel/entry-common.S +++ b/arch/arm/kernel/entry-common.S @@ -33,7 +33,9 @@ ret_fast_syscall: UNWIND(.fnstart ) UNWIND(.cantunwind ) disable_irq @ disable interrupts - ldr r1, [tsk, #TI_FLAGS] + ldr r1, [tsk, #TI_FLAGS] @ re-check for syscall tracing + tst r1, #_TIF_SYSCALL_WORK + bne __sys_trace_return tst r1, #_TIF_WORK_MASK bne fast_work_pending asm_trace_hardirqs_on diff --git a/arch/arm/kernel/hibernate.c b/arch/arm/kernel/hibernate.c index c4cc50e58c13..cfb354ff2a60 100644 --- a/arch/arm/kernel/hibernate.c +++ b/arch/arm/kernel/hibernate.c @@ -22,6 +22,7 @@ #include <asm/suspend.h> #include <asm/memory.h> #include <asm/sections.h> +#include "reboot.h" int pfn_is_nosave(unsigned long pfn) { @@ -61,7 +62,7 @@ static int notrace arch_save_image(unsigned long unused) ret = swsusp_save(); if (ret == 0) - soft_restart(virt_to_phys(cpu_resume)); + _soft_restart(virt_to_phys(cpu_resume), false); return ret; } @@ -86,7 +87,7 @@ static void notrace arch_restore_image(void *unused) for (pbe = restore_pblist; pbe; pbe = pbe->next) copy_page(pbe->orig_address, pbe->address); - soft_restart(virt_to_phys(cpu_resume)); + _soft_restart(virt_to_phys(cpu_resume), false); } static u64 resume_stack[PAGE_SIZE/2/sizeof(u64)] __nosavedata; diff --git a/arch/arm/kernel/iwmmxt.S b/arch/arm/kernel/iwmmxt.S index ad58e565fe98..49fadbda8c63 100644 --- a/arch/arm/kernel/iwmmxt.S +++ b/arch/arm/kernel/iwmmxt.S @@ -58,6 +58,7 @@ #define MMX_SIZE (0x98) .text + .arm /* * Lazy switching of Concan coprocessor context @@ -182,6 +183,8 @@ concan_load: tmcr wCon, r2 ret lr +ENDPROC(iwmmxt_task_enable) + /* * Back up Concan regs to save area and disable access to them * (mainly for gdb or sleep mode usage) @@ -232,6 +235,8 @@ ENTRY(iwmmxt_task_disable) 1: msr cpsr_c, ip @ restore interrupt mode ldmfd sp!, {r4, pc} +ENDPROC(iwmmxt_task_disable) + /* * Copy Concan state to given memory address * @@ -268,6 +273,8 @@ ENTRY(iwmmxt_task_copy) msr cpsr_c, ip @ restore interrupt mode ret r3 +ENDPROC(iwmmxt_task_copy) + /* * Restore Concan state from given memory address * @@ -304,6 +311,8 @@ ENTRY(iwmmxt_task_restore) msr cpsr_c, ip @ restore interrupt mode ret r3 +ENDPROC(iwmmxt_task_restore) + /* * Concan handling on task switch * @@ -335,6 +344,8 @@ ENTRY(iwmmxt_task_switch) mrc p15, 0, r1, c2, c0, 0 sub pc, lr, r1, lsr #32 @ cpwait and return +ENDPROC(iwmmxt_task_switch) + /* * Remove Concan ownership of given task * @@ -353,6 +364,8 @@ ENTRY(iwmmxt_task_release) msr cpsr_c, r2 @ restore interrupts ret lr +ENDPROC(iwmmxt_task_release) + .data concan_owner: .word 0 diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index 06562719a330..617ec4ab4d81 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -42,6 +42,7 @@ #include <asm/system_misc.h> #include <asm/mach/time.h> #include <asm/tls.h> +#include "reboot.h" #ifdef CONFIG_CC_STACKPROTECTOR #include <linux/stackprotector.h> @@ -133,7 +134,7 @@ static void __soft_restart(void *addr) BUG(); } -void soft_restart(unsigned long addr) +void _soft_restart(unsigned long addr, bool disable_l2) { u64 *stack = soft_restart_stack + ARRAY_SIZE(soft_restart_stack); @@ -142,7 +143,7 @@ void soft_restart(unsigned long addr) local_fiq_disable(); /* Disable the L2 if we're the last man standing. */ - if (num_online_cpus() == 1) + if (disable_l2) outer_disable(); /* Change to the new stack and continue with the reset. */ @@ -152,6 +153,11 @@ void soft_restart(unsigned long addr) BUG(); } +void soft_restart(unsigned long addr) +{ + _soft_restart(addr, num_online_cpus() == 1); +} + /* * Function pointers to optional machine specific functions */ diff --git a/arch/arm/kernel/reboot.h b/arch/arm/kernel/reboot.h new file mode 100644 index 000000000000..c87f05816d6b --- /dev/null +++ b/arch/arm/kernel/reboot.h @@ -0,0 +1,6 @@ +#ifndef REBOOT_H +#define REBOOT_H + +extern void _soft_restart(unsigned long addr, bool disable_l2); + +#endif |