arch/tile: add Tilera's <arch/sim.h> header as an open-source header
This change adds one of the Tilera standard <arch> headers to the set
of headers shipped with Linux. The <arch/sim.h> header provides
methods for programmatically interacting with the Tilera simulator.
The current <arch/sim.h> provides inline assembly for the _sim_syscall
function, so the declaration and definition previously provided
manually in Linux are no longer needed. We now use the standard
sim_validate_lines_evicted() method from <arch/sim.h> rather than
rolling our own direct call to sim_syscall().
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
diff --git a/arch/tile/mm/homecache.c b/arch/tile/mm/homecache.c
index fb3b4a5..d78df3a 100644
--- a/arch/tile/mm/homecache.c
+++ b/arch/tile/mm/homecache.c
@@ -37,6 +37,8 @@
#include <asm/pgalloc.h>
#include <asm/homecache.h>
+#include <arch/sim.h>
+
#include "migrate.h"
@@ -217,13 +219,6 @@
return (length >= CHIP_L2_CACHE_SIZE()) ? HV_FLUSH_EVICT_L2 : length;
}
-/* On the simulator, confirm lines have been evicted everywhere. */
-static void validate_lines_evicted(unsigned long pfn, size_t length)
-{
- sim_syscall(SIM_SYSCALL_VALIDATE_LINES_EVICTED,
- (HV_PhysAddr)pfn << PAGE_SHIFT, length);
-}
-
/* Flush a page out of whatever cache(s) it is in. */
void homecache_flush_cache(struct page *page, int order)
{
@@ -234,7 +229,7 @@
homecache_mask(page, pages, &home_mask);
flush_remote(pfn, length, &home_mask, 0, 0, 0, NULL, NULL, 0);
- validate_lines_evicted(pfn, pages * PAGE_SIZE);
+ sim_validate_lines_evicted(PFN_PHYS(pfn), pages * PAGE_SIZE);
}