arch/powerpc/platforms/cell/spu_notify.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Move OProfile dependencies from spufs module to the kernel so it
   4  * can run on non-cell PPC.
   5  *
   6  * Copyright (C) IBM 2005
   7  */
   8
   9 #undef DEBUG
  10
  11 #include <linux/export.h>
  12 #include <linux/notifier.h>
  13 #include <asm/spu.h>
  14 #include "spufs/spufs.h"
  15
  16 static BLOCKING_NOTIFIER_HEAD(spu_switch_notifier);
  17
  18 void spu_switch_notify(struct spu *spu, struct spu_context *ctx)
  19 {
  20         blocking_notifier_call_chain(&spu_switch_notifier,
  21                                      ctx ? ctx->object_id : 0, spu);
  22 }
  23 EXPORT_SYMBOL_GPL(spu_switch_notify);
  24
  25 int spu_switch_event_register(struct notifier_block *n)
  26 {
  27         int ret;
  28         ret = blocking_notifier_chain_register(&spu_switch_notifier, n);
  29         if (!ret)
  30                 notify_spus_active();
  31         return ret;
  32 }
  33 EXPORT_SYMBOL_GPL(spu_switch_event_register);
  34
  35 int spu_switch_event_unregister(struct notifier_block *n)
  36 {
  37         return blocking_notifier_chain_unregister(&spu_switch_notifier, n);
  38 }
  39 EXPORT_SYMBOL_GPL(spu_switch_event_unregister);
  40
  41 void spu_set_profile_private_kref(struct spu_context *ctx,
  42                                   struct kref *prof_info_kref,
  43                                   void (* prof_info_release) (struct kref *kref))
  44 {
  45         ctx->prof_priv_kref = prof_info_kref;
  46         ctx->prof_priv_release = prof_info_release;
  47 }
  48 EXPORT_SYMBOL_GPL(spu_set_profile_private_kref);
  49
  50 void *spu_get_profile_private_kref(struct spu_context *ctx)
  51 {
  52         return ctx->prof_priv_kref;
  53 }
  54 EXPORT_SYMBOL_GPL(spu_get_profile_private_kref);
  55