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Code Issues Releases Activity

- Drop unused pmap_use_l1 function and comment out currently unused

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pmap_dcache_wbinv_all/pmap_copy_page functions which we might want
  to take advatage of later.  This fixes the build with PMAP_DEBUG
  defined.

Discussed with:	cognet
This commit is contained in:
Stanislav Sedov 2009-10-05 10:08:58 +00:00
parent 4fa5b48f39
commit 2c7cd48d3c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=197770
1 changed files with 8 additions and 46 deletions
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54
sys/arm/arm/pmap.c
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@ -203,7 +203,6 @@ static void pmap_enter_locked(pmap_t, vm_offset_t, vm_page_t,
static void pmap_fix_cache(struct vm_page *, pmap_t, vm_offset_t);
static void pmap_alloc_l1(pmap_t);
static void pmap_free_l1(pmap_t);
static void pmap_use_l1(pmap_t);
static int pmap_clearbit(struct vm_page *, u_int);
@ -829,47 +828,6 @@ pmap_free_l1(pmap_t pm)
mtx_unlock(&l1_lru_lock);
}
static PMAP_INLINE void
pmap_use_l1(pmap_t pm)
{
struct l1_ttable *l1;
/*
* Do nothing if we're in interrupt context.
* Access to an L1 by the kernel pmap must not affect
* the LRU list.
*/
if (pm == pmap_kernel())
return;
l1 = pm->pm_l1;
/*
* If the L1 is not currently on the LRU list, just return
*/
if (l1->l1_domain_use_count == PMAP_DOMAINS)
return;
mtx_lock(&l1_lru_lock);
/*
* Check the use count again, now that we've acquired the lock
*/
if (l1->l1_domain_use_count == PMAP_DOMAINS) {
mtx_unlock(&l1_lru_lock);
return;
}
/*
* Move the L1 to the back of the LRU list
*/
TAILQ_REMOVE(&l1_lru_list, l1, l1_lru);
TAILQ_INSERT_TAIL(&l1_lru_list, l1, l1_lru);
mtx_unlock(&l1_lru_lock);
}
/*
* Returns a pointer to the L2 bucket associated with the specified pmap
* and VA, or NULL if no L2 bucket exists for the address.
@ -1311,6 +1269,7 @@ pmap_idcache_wbinv_all(pmap_t pm)
}
}
#ifdef notyet
static PMAP_INLINE void
pmap_dcache_wbinv_all(pmap_t pm)
{
@ -1320,6 +1279,7 @@ pmap_dcache_wbinv_all(pmap_t pm)
cpu_l2cache_wbinv_all();
}
}
#endif
/*
* PTE_SYNC_CURRENT:
@ -1914,7 +1874,7 @@ pmap_init(void)
{
int shpgperproc = PMAP_SHPGPERPROC;
PDEBUG(1, printf("pmap_init: phys_start = %08x\n"));
PDEBUG(1, printf("pmap_init: phys_start = %08x\n", PHYSADDR));
/*
* init the pv free list
@ -2373,8 +2333,8 @@ pmap_bootstrap(vm_offset_t firstaddr, vm_offset_t lastaddr, struct pv_addr *l1pt
vm_size_t size;
int l1idx, l2idx, l2next = 0;
PDEBUG(1, printf("firstaddr = %08x, loadaddr = %08x\n",
firstaddr, loadaddr));
PDEBUG(1, printf("firstaddr = %08x, lastaddr = %08x\n",
firstaddr, lastaddr));
virtual_avail = firstaddr;
kernel_pmap->pm_l1 = l1;
@ -4251,7 +4211,7 @@ pmap_zero_page_idle(vm_page_t m)
* pmap_clean_page()
*
* This is a local function used to work out the best strategy to clean
* a single page referenced by its entry in the PV table. It's used by
* a single page referenced by its entry in the PV table. It should be used by
* pmap_copy_page, pmap_zero page and maybe some others later on.
*
* Its policy is effectively:
@ -4266,6 +4226,8 @@ pmap_zero_page_idle(vm_page_t m)
* mapped at 0x00000000 a whole cache clean will be performed rather than
* just the 1 page. Since this should not occur in everyday use and if it does
* it will just result in not the most efficient clean for the page.
*
* We don't yet use this function but may want to.
*/
static int
pmap_clean_page(struct pv_entry *pv, boolean_t is_src)