mm: per-thread vma caching

[platform/adaptation/renesas_rcar/renesas_kernel.git] / kernel / debug / debug_core.c

diff --git a/kernel/debug/debug_core.c b/kernel/debug/debug_core.c
index 334b398..8865cae 100644 (file)
--- a/kernel/debug/debug_core.c
+++ b/kernel/debug/debug_core.c
@@ -49,6 +49,7 @@
 #include <linux/pid.h>
 #include <linux/smp.h>
 #include <linux/mm.h>
+#include <linux/vmacache.h>
 #include <linux/rcupdate.h>
 
 #include <asm/cacheflush.h>
@@ -224,10 +225,17 @@ static void kgdb_flush_swbreak_addr(unsigned long addr)
        if (!CACHE_FLUSH_IS_SAFE)
                return;
 
-       if (current->mm && current->mm->mmap_cache) {
-               flush_cache_range(current->mm->mmap_cache,
-                                 addr, addr + BREAK_INSTR_SIZE);
+       if (current->mm) {
+               int i;
+
+               for (i = 0; i < VMACACHE_SIZE; i++) {
+                       if (!current->vmacache[i])
+                               continue;
+                       flush_cache_range(current->vmacache[i],
+                                         addr, addr + BREAK_INSTR_SIZE);
+               }
        }
+
        /* Force flush instruction cache if it was outside the mm */
        flush_icache_range(addr, addr + BREAK_INSTR_SIZE);
 }