[Xen-devel] [PATCH v2 12/16] tmem: cleanup: __tmem_alloc_page: drop unneed parameters

[Bob Liu <lliubbo@xxxxxxxxx>]

The two parameters of __tmem_alloc_page() can be reduced.
tmem_called_from_tmem() was also dropped by this patch.

Signed-off-by: Bob Liu <bob.liu@xxxxxxxxxx>
---
 xen/common/tmem.c          |   13 +++++--------
 xen/include/xen/tmem_xen.h |   11 +++++------
 2 files changed, 10 insertions(+), 14 deletions(-)

diff --git a/xen/common/tmem.c b/xen/common/tmem.c
index b904285..abc9053 100644
--- a/xen/common/tmem.c
+++ b/xen/common/tmem.c
@@ -244,7 +244,7 @@ static struct page_info *tmem_alloc_page(struct tmem_pool 
*pool)
     if ( pool != NULL && is_persistent(pool) )
         pfp = __tmem_alloc_page_thispool(pool->client->domain);
     else
-        pfp = __tmem_alloc_page(pool,0);
+        pfp = __tmem_alloc_page();
     return pfp;
 }
 
@@ -262,9 +262,8 @@ static noinline void *tmem_mempool_page_get(unsigned long 
size)
     struct page_info *pi;
 
     ASSERT(size == PAGE_SIZE);
-    if ( (pi = __tmem_alloc_page(NULL,0)) == NULL )
+    if ( (pi = __tmem_alloc_page()) == NULL )
         return NULL;
-    ASSERT(IS_VALID_PAGE(pi));
     return page_to_virt(pi);
 }
 
@@ -2425,7 +2424,6 @@ void tmem_freeze_all(unsigned char key)
 void *tmem_relinquish_pages(unsigned int order, unsigned int memflags)
 {
     struct page_info *pfp;
-    unsigned long evicts_per_relinq = 0;
     int max_evictions = 10;
 
     if (!tmem_enabled() || !tmem_freeable_pages())
@@ -2439,14 +2437,13 @@ void *tmem_relinquish_pages(unsigned int order, 
unsigned int memflags)
         return NULL;
     }
 
-    if ( tmem_called_from_tmem(memflags) )
+    if ( memflags & MEMF_tmem )
         read_lock(&tmem_rwlock);
 
-    while ( (pfp = __tmem_alloc_page(NULL,1)) == NULL )
+    while ( (pfp = tmem_page_list_get()) == NULL )
     {
         if ( (max_evictions-- <= 0) || !tmem_evict())
             break;
-        evicts_per_relinq++;
     }
     if ( pfp != NULL )
     {
@@ -2454,7 +2451,7 @@ void *tmem_relinquish_pages(unsigned int order, unsigned 
int memflags)
             scrub_one_page(pfp);
     }
 
-    if ( tmem_called_from_tmem(memflags) )
+    if ( memflags & MEMF_tmem )
         read_unlock(&tmem_rwlock);
 
     return pfp;
diff --git a/xen/include/xen/tmem_xen.h b/xen/include/xen/tmem_xen.h
index 5757de0..f32f977 100644
--- a/xen/include/xen/tmem_xen.h
+++ b/xen/include/xen/tmem_xen.h
@@ -144,15 +144,16 @@ static inline void __tmem_free_page_thispool(struct 
page_info *pi)
 /*
  * Memory allocation for ephemeral (non-persistent) data
  */
-static inline struct page_info *__tmem_alloc_page(void *pool, int no_heap)
+static inline struct page_info *__tmem_alloc_page(void)
 {
     struct page_info *pi = tmem_page_list_get();
 
-    if ( pi == NULL && !no_heap )
+    if ( pi == NULL)
         pi = alloc_domheap_pages(0,0,MEMF_tmem);
-    ASSERT((pi == NULL) || IS_VALID_PAGE(pi));
-    if ( pi != NULL && !no_heap )
+
+    if ( pi )
         atomic_inc(&freeable_page_count);
+    ASSERT((pi == NULL) || IS_VALID_PAGE(pi));
     return pi;
 }
 
@@ -168,8 +169,6 @@ static inline unsigned long tmem_free_mb(void)
     return (tmem_page_list_pages + total_free_pages()) >> (20 - PAGE_SHIFT);
 }
 
-#define tmem_called_from_tmem(_memflags) (_memflags & MEMF_tmem)
-
 /*  "Client" (==domain) abstraction */
 
 struct client;
-- 
1.7.10.4


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