sparc32: centralize all mmu context handling in srmmu.c (b585e855) · Commits · e / devices / android_kernel_fairphone_FP3

arch/sparc/include/asm/mmu_context_32.h

+3 −5

Original line number	Diff line number	Diff line
		@@ -9,14 +9,12 @@ static inline void enter_lazy_tlb(struct mm_struct mm, struct task_struct tsk)
		{
		}

		/*
		* Initialize a new mmu context. This is invoked when a new
		/* Initialize a new mmu context. This is invoked when a new
		* address space instance (unique or shared) is instantiated.
		*/
		#define init_new_context(tsk, mm) (((mm)->context = NO_CONTEXT), 0)
		int init_new_context(struct task_struct tsk, struct mm_struct mm);

		/*
		* Destroy a dead context. This occurs when mmput drops the
		/* Destroy a dead context. This occurs when mmput drops the
		* mm_users count to zero, the mmaps have been released, and
		* all the page tables have been flushed. Our job is to destroy
		* any remaining processor-specific state.

+0 −32

Original line number	Diff line number	Diff line
		@@ -79,8 +79,6 @@ extern unsigned long ptr_in_current_pgd;
		#define __S110 PAGE_SHARED
		#define __S111 PAGE_SHARED

		extern int num_contexts;

		/* First physical page can be anywhere, the following is needed so that
		* va-->pa and vice versa conversions work properly without performance
		* hit for all __pa()/__va() operations.
		@@ -399,36 +397,6 @@ static inline pte_t pgoff_to_pte(unsigned long pgoff)
		*/
		#define PTE_FILE_MAX_BITS 24

		/*
		*/
		struct ctx_list {
		struct ctx_list *next;
		struct ctx_list *prev;
		unsigned int ctx_number;
		struct mm_struct *ctx_mm;
		};

		extern struct ctx_list ctx_list_pool; / Dynamically allocated */
		extern struct ctx_list ctx_free; /* Head of free list */
		extern struct ctx_list ctx_used; /* Head of used contexts list */

		#define NO_CONTEXT -1

		static inline void remove_from_ctx_list(struct ctx_list *entry)
		{
		entry->next->prev = entry->prev;
		entry->prev->next = entry->next;
		}

		static inline void add_to_ctx_list(struct ctx_list head, struct ctx_list entry)
		{
		entry->next = head;
		(entry->prev = head->prev)->next = entry;
		head->prev = entry;
		}
		#define add_to_free_ctxlist(entry) add_to_ctx_list(&ctx_free, entry)
		#define add_to_used_ctxlist(entry) add_to_ctx_list(&ctx_used, entry)

		static inline unsigned long
		__get_phys (unsigned long addr)
		{

+0 −1

Original line number	Diff line number	Diff line
		@@ -371,7 +371,6 @@ void __init setup_arch(char **cmdline_p)
		(*(linux_dbvec->teach_debugger))();
		}

		init_mm.context = (unsigned long) NO_CONTEXT;
		init_task.thread.kregs = &fake_swapper_regs;

		/* Run-time patch instructions to match the cpu model */

+0 −6

Original line number	Diff line number	Diff line
		@@ -32,12 +32,6 @@

		int show_unhandled_signals = 1;

		/* At boot time we determine these two values necessary for setting
		* up the segment maps and page table entries (pte's).
		*/

		int num_contexts;

		/* Return how much physical memory we have. */
		unsigned long probe_memory(void)
		{

+0 −18

Original line number	Diff line number	Diff line
		@@ -82,24 +82,6 @@ void show_mem(unsigned int filter)
		#endif
		}

		void __init sparc_context_init(int numctx)
		{
		int ctx;

		ctx_list_pool = __alloc_bootmem(numctx * sizeof(struct ctx_list), SMP_CACHE_BYTES, 0UL);

		for(ctx = 0; ctx < numctx; ctx++) {
		struct ctx_list *clist;

		clist = (ctx_list_pool + ctx);
		clist->ctx_number = ctx;
		clist->ctx_mm = NULL;
		}
		ctx_free.next = ctx_free.prev = &ctx_free;
		ctx_used.next = ctx_used.prev = &ctx_used;
		for(ctx = 0; ctx < numctx; ctx++)
		add_to_free_ctxlist(ctx_list_pool + ctx);
		}

		extern unsigned long cmdline_memory_size;
		unsigned long last_valid_pfn;