cxl: Rework context lifetimes

This reworks contexts lifetimes a bit to enable the kernel API where we may
want to reuse contexts. Here we will want to start and stop contexts without
freeing them.

Start context does the get pid & ctx so stop context will need to do the puts.
Here we move put pid & ctx to the detach context path which will become part of
the stop context path.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Acked-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Michael Neuling 2015-05-27 16:07:14 +10:00 committed by Michael Ellerman
parent 2f663527bd
commit 7bb5d91a4d
2 changed files with 3 additions and 3 deletions

View file

@ -186,6 +186,9 @@ int __detach_context(struct cxl_context *ctx)
return -EBUSY;
WARN_ON(cxl_detach_process(ctx));
flush_work(&ctx->fault_work); /* Only needed for dedicated process */
put_pid(ctx->pid);
cxl_ctx_put();
return 0;
}
@ -204,7 +207,6 @@ void cxl_context_detach(struct cxl_context *ctx)
return;
afu_release_irqs(ctx, ctx);
flush_work(&ctx->fault_work); /* Only needed for dedicated process */
wake_up_all(&ctx->wq);
}
@ -245,7 +247,6 @@ static void reclaim_ctx(struct rcu_head *rcu)
free_page((u64)ctx->sstp);
ctx->sstp = NULL;
put_pid(ctx->pid);
kfree(ctx);
}

View file

@ -128,7 +128,6 @@ static int afu_release(struct inode *inode, struct file *file)
*/
cxl_context_free(ctx);
cxl_ctx_put();
return 0;
}