ARC fixes for 4.4-rc3
- Fix for perf callgraph unwinding causing RCU stalls - Fix to enable Linux to run on non-default Interrupt priority 0 - Removal of pointless SYNC from __switch_to() -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJWWEhjAAoJEGnX8d3iisJewN8P/3emX7r8RBE/W095FwrzXXRP QpQf48YKGx8PJIXLCMyj3oiD0ALtmtekSYDPs9E5IOpnli1tBMCIB5ZBGrcfQDYp nsowUBEf4Fsaq3cgtOCQFoqcAtdHXGnxQoy6zN1ItfRxdvLDqNjWa9M+h7uDjsPE klw7eP/kTiJC+OKRNylOo4w0rRkf/EQntteNIBQ5gznmtN/whNTDaD6t6AbwRrY7 8Yki1tmN/sKjfpUz7TZH2Tf/qQ/M4sBW4SWIifBk2lxZe1dHduYx6tJPP/PLhAhO e2mI96CzeH691erqGbE6weYK5qEm2RTtf3uvv0jycPLg8jcF62C0H6lxB/+u87rD ZYIXd51Z6jS1vyG/v2pddj/8MQC7JFJBv7pKmGLtHzihbIZBLHLUcQKYma1p2Jro 9oxFFtCAWcF+/CwyHNBYhzrIXI7KpZFLvErFkzHf2lQAQy/9kV1zdsaAkCSPzNOq 3MXHxajUg3er1zl7prduIp1OVil6+WoN6iZm3HAczrZjmqb70zZNodmYHQ32GHlU P7k+/j+u3nfORyVZnLVtv4WCrd1IT9gSLLzrdf6CU9Ek7zmgO+spwbTtEslaBWyp sn7rinIfXvd7gGDtUgXansr/xMVL0VXt8ZpEjyqgi1a6O/BuC2WDMPtSlWYkU6dd fs47GLW868wveV5rakBV =iOv3 -----END PGP SIGNATURE----- Merge tag 'arc-4.4-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc Pull ARC fixes from Vineet Gupta: - Fix for perf callgraph unwinding causing RCU stalls - Fix to enable Linux to run on non-default Interrupt priority 0 - Removal of pointless SYNC from __switch_to() * tag 'arc-4.4-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: ARC: dw2 unwind: Remove falllback linear search thru FDE entries ARC: remove SYNC from __switch_to() ARCv2: Use the default irq priority for idle sleep ARC: Abstract out ISA specific SLEEP args ARC: comments update ARC: switch to arc-linux- CROSS_COMPILE prefix across all configs
This commit is contained in:
commit
03018ac2bb
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@ -1,4 +1,4 @@
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CONFIG_CROSS_COMPILE="arc-linux-uclibc-"
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CONFIG_CROSS_COMPILE="arc-linux-"
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CONFIG_DEFAULT_HOSTNAME="ARCLinux"
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# CONFIG_SWAP is not set
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CONFIG_SYSVIPC=y
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@ -1,4 +1,4 @@
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CONFIG_CROSS_COMPILE="arc-linux-uclibc-"
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CONFIG_CROSS_COMPILE="arc-linux-"
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CONFIG_DEFAULT_HOSTNAME="ARCLinux"
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# CONFIG_SWAP is not set
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CONFIG_SYSVIPC=y
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@ -1,4 +1,4 @@
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CONFIG_CROSS_COMPILE="arc-linux-uclibc-"
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CONFIG_CROSS_COMPILE="arc-linux-"
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CONFIG_DEFAULT_HOSTNAME="ARCLinux"
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# CONFIG_SWAP is not set
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CONFIG_SYSVIPC=y
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@ -1,4 +1,4 @@
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CONFIG_CROSS_COMPILE="arc-linux-uclibc-"
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CONFIG_CROSS_COMPILE="arc-linux-"
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# CONFIG_LOCALVERSION_AUTO is not set
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CONFIG_DEFAULT_HOSTNAME="ARCLinux"
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# CONFIG_SWAP is not set
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@ -1,4 +1,4 @@
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CONFIG_CROSS_COMPILE="arc-linux-uclibc-"
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CONFIG_CROSS_COMPILE="arc-linux-"
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# CONFIG_LOCALVERSION_AUTO is not set
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CONFIG_DEFAULT_HOSTNAME="ARCLinux"
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# CONFIG_SWAP is not set
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@ -1,4 +1,4 @@
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CONFIG_CROSS_COMPILE="arc-linux-uclibc-"
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CONFIG_CROSS_COMPILE="arc-linux-"
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# CONFIG_LOCALVERSION_AUTO is not set
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CONFIG_DEFAULT_HOSTNAME="ARCLinux"
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# CONFIG_SWAP is not set
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@ -1,4 +1,4 @@
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CONFIG_CROSS_COMPILE="arc-linux-uclibc-"
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CONFIG_CROSS_COMPILE="arc-linux-"
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CONFIG_DEFAULT_HOSTNAME="ARCLinux"
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# CONFIG_SWAP is not set
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CONFIG_SYSVIPC=y
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@ -1,4 +1,4 @@
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CONFIG_CROSS_COMPILE="arc-linux-uclibc-"
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CONFIG_CROSS_COMPILE="arc-linux-"
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# CONFIG_LOCALVERSION_AUTO is not set
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CONFIG_DEFAULT_HOSTNAME="ARCLinux"
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# CONFIG_CROSS_MEMORY_ATTACH is not set
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@ -1,4 +1,4 @@
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CONFIG_CROSS_COMPILE="arc-linux-uclibc-"
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CONFIG_CROSS_COMPILE="arc-linux-"
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# CONFIG_LOCALVERSION_AUTO is not set
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CONFIG_DEFAULT_HOSTNAME="ARCLinux"
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# CONFIG_CROSS_MEMORY_ATTACH is not set
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@ -37,6 +37,9 @@
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#define ISA_INIT_STATUS_BITS (STATUS_IE_MASK | STATUS_AD_MASK | \
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(ARCV2_IRQ_DEF_PRIO << 1))
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/* SLEEP needs default irq priority (<=) which can interrupt the doze */
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#define ISA_SLEEP_ARG (0x10 | ARCV2_IRQ_DEF_PRIO)
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#ifndef __ASSEMBLY__
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/*
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@ -43,6 +43,8 @@
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#define ISA_INIT_STATUS_BITS STATUS_IE_MASK
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#define ISA_SLEEP_ARG 0x3
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#ifndef __ASSEMBLY__
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/******************************************************************
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@ -58,8 +58,6 @@ __switch_to(struct task_struct *prev_task, struct task_struct *next_task)
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"st sp, [r24] \n\t"
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#endif
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"sync \n\t"
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/*
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* setup _current_task with incoming tsk.
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* optionally, set r25 to that as well
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@ -44,9 +44,6 @@ __switch_to:
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* don't need to do anything special to return it
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*/
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/* hardware memory barrier */
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sync
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/*
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* switch to new task, contained in r1
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* Temp reg r3 is required to get the ptr to store val
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@ -44,11 +44,10 @@ SYSCALL_DEFINE0(arc_gettls)
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void arch_cpu_idle(void)
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{
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/* sleep, but enable all interrupts before committing */
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if (is_isa_arcompact()) {
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__asm__("sleep 0x3");
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} else {
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__asm__("sleep 0x10");
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}
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__asm__ __volatile__(
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"sleep %0 \n"
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:
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:"I"(ISA_SLEEP_ARG)); /* can't be "r" has to be embedded const */
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}
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asmlinkage void ret_from_fork(void);
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@ -986,42 +986,13 @@ int arc_unwind(struct unwind_frame_info *frame)
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(const u8 *)(fde +
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1) +
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*fde, ptrType);
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if (pc >= endLoc)
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if (pc >= endLoc) {
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fde = NULL;
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} else
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fde = NULL;
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}
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if (fde == NULL) {
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for (fde = table->address, tableSize = table->size;
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cie = NULL, tableSize > sizeof(*fde)
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&& tableSize - sizeof(*fde) >= *fde;
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tableSize -= sizeof(*fde) + *fde,
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fde += 1 + *fde / sizeof(*fde)) {
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cie = cie_for_fde(fde, table);
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if (cie == &bad_cie) {
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cie = NULL;
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break;
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}
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if (cie == NULL
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|| cie == ¬_fde
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|| (ptrType = fde_pointer_type(cie)) < 0)
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continue;
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ptr = (const u8 *)(fde + 2);
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startLoc = read_pointer(&ptr,
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(const u8 *)(fde + 1) +
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*fde, ptrType);
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if (!startLoc)
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continue;
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if (!(ptrType & DW_EH_PE_indirect))
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ptrType &=
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DW_EH_PE_FORM | DW_EH_PE_signed;
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endLoc =
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startLoc + read_pointer(&ptr,
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(const u8 *)(fde +
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1) +
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*fde, ptrType);
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if (pc >= startLoc && pc < endLoc)
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break;
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} else {
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fde = NULL;
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cie = NULL;
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}
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}
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}
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@ -619,10 +619,10 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long vaddr_unaligned,
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int dirty = !test_and_set_bit(PG_dc_clean, &page->flags);
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if (dirty) {
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/* wback + inv dcache lines */
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/* wback + inv dcache lines (K-mapping) */
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__flush_dcache_page(paddr, paddr);
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/* invalidate any existing icache lines */
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/* invalidate any existing icache lines (U-mapping) */
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if (vma->vm_flags & VM_EXEC)
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__inv_icache_page(paddr, vaddr);
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}
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