[POWERPC] spufs: move fault, lscsa_alloc and switch code to spufs module

Currently, part of the spufs code (switch.o, lscsa_alloc.o and fault.o)
is compiled directly into the kernel.

This change moves these components of spufs into the kernel.

The lscsa and switch objects are fairly straightforward to move in.

For the fault.o module, we split the fault-handling code into two
parts: a/p/p/c/spu_fault.c and a/p/p/c/spufs/fault.c. The former is for
the in-kernel spu_handle_mm_fault function, and we move the rest of the
fault-handling code into spufs.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 11 insertions, 36 deletions

diff --git a/arch/powerpc/platforms/cell/spufs/spufs.h b/arch/powerpc/platforms/cell/spufs/spufs.h
index 5e92ad32cc9..cce50f317c7 100644
--- a/arch/powerpc/platforms/cell/spufs/spufs.h
+++ b/arch/powerpc/platforms/cell/spufs/spufs.h
@@ -307,41 +307,16 @@ struct spufs_coredump_reader {
 extern struct spufs_coredump_reader spufs_coredump_read[];
 extern int spufs_coredump_num_notes;
 
-/*
- * This function is a little bit too large for an inline, but
- * as fault.c is built into the kernel we can't move it out of
- * line.
- */
-static inline void spuctx_switch_state(struct spu_context *ctx,
-                enum spu_utilization_state new_state)
-{
-        unsigned long long curtime;
-        signed long long delta;
-        struct timespec ts;
-        struct spu *spu;
-        enum spu_utilization_state old_state;
-
-        ktime_get_ts(&ts);
-        curtime = timespec_to_ns(&ts);
-        delta = curtime - ctx->stats.tstamp;
-
-        WARN_ON(!mutex_is_locked(&ctx->state_mutex));
-        WARN_ON(delta < 0);
-
-        spu = ctx->spu;
-        old_state = ctx->stats.util_state;
-        ctx->stats.util_state = new_state;
-        ctx->stats.tstamp = curtime;
-
-        /*
-         * Update the physical SPU utilization statistics.
-         */
-        if (spu) {
-                ctx->stats.times[old_state] += delta;
-                spu->stats.times[old_state] += delta;
-                spu->stats.util_state = new_state;
-                spu->stats.tstamp = curtime;
-        }
-}
+extern int spu_init_csa(struct spu_state *csa);
+extern void spu_fini_csa(struct spu_state *csa);
+extern int spu_save(struct spu_state *prev, struct spu *spu);
+extern int spu_restore(struct spu_state *new, struct spu *spu);
+extern int spu_switch(struct spu_state *prev, struct spu_state *new,
+                      struct spu *spu);
+extern int spu_alloc_lscsa(struct spu_state *csa);
+extern void spu_free_lscsa(struct spu_state *csa);
+
+extern void spuctx_switch_state(struct spu_context *ctx,
+                enum spu_utilization_state new_state);
 
 #endif