redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

cxl: Rework detach context functions 

Rework __detach_context() and cxl_context_detach() so we can reuse them in the
kernel API.

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>
hifive-unleashed-5.1
Michael Neuling 2015-05-27 16:07:08 +10:00 committed by Michael Ellerman
parent 6428832a7b
commit eda3693c84
2 changed files with 14 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
drivers/misc/cxl/context.c
View File

@ -174,7 +174,7 @@ int cxl_context_iomap(struct cxl_context *ctx, struct vm_area_struct *vma)
* return until all outstanding interrupts for this context have completed. The
* hardware should no longer access *ctx after this has returned.
*/
static void __detach_context(struct cxl_context *ctx)
int __detach_context(struct cxl_context *ctx)
{
enum cxl_context_status status;
@ -183,12 +183,10 @@ static void __detach_context(struct cxl_context *ctx)
ctx->status = CLOSED;
mutex_unlock(&ctx->status_mutex);
if (status != STARTED)
return;
return -EBUSY;
WARN_ON(cxl_detach_process(ctx));
afu_release_irqs(ctx, ctx);
flush_work(&ctx->fault_work); /* Only needed for dedicated process */
wake_up_all(&ctx->wq);
return 0;
}
/*
@ -199,7 +197,15 @@ static void __detach_context(struct cxl_context *ctx)
*/
void cxl_context_detach(struct cxl_context *ctx)
{
__detach_context(ctx);
int rc;
rc = __detach_context(ctx);
if (rc)
return;
afu_release_irqs(ctx, ctx);
flush_work(&ctx->fault_work); /* Only needed for dedicated process */
wake_up_all(&ctx->wq);
}
/*
@ -216,7 +222,7 @@ void cxl_context_detach_all(struct cxl_afu *afu)
* Anything done in here needs to be setup before the IDR is
* created and torn down after the IDR removed
*/
__detach_context(ctx);
cxl_context_detach(ctx);
/*
* We are force detaching - remove any active PSA mappings so

1
drivers/misc/cxl/cxl.h
View File

@ -636,6 +636,7 @@ int cxl_context_init(struct cxl_context *ctx, struct cxl_afu *afu, bool master,
struct address_space *mapping);
void cxl_context_free(struct cxl_context *ctx);
int cxl_context_iomap(struct cxl_context *ctx, struct vm_area_struct *vma);
int __detach_context(struct cxl_context *ctx);
/* This matches the layout of the H_COLLECT_CA_INT_INFO retbuf */
struct cxl_irq_info {