Multimode invocation request is intended to support multiple
different type of requests. This will include enhanced invoke
request to support CRC check and performance counter enablement.
This will also support few driver level user controllable
mechanisms like usage of shared context banks, wakelock support,
etc. This IOCTL is also added with the aim to support few
new fastrpc features like DSP PD notification framework,
DSP Signalling mechanism etc.
Signed-off-by: Ekansh Gupta <[email protected]>
---
Changes in v4:
- Added padding member to IOCTL structure
- Added checks for reserved members
Changes in v6:
- Added correct format of comments
Changes in v7:
- Rebase the patch to latest kernel version
drivers/misc/fastrpc.c | 160 +++++++++++++++++++++++++++---------
include/uapi/misc/fastrpc.h | 26 ++++++
2 files changed, 145 insertions(+), 41 deletions(-)
diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index 1c6c62a7f7f5..265e34f53c4e 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -573,7 +573,7 @@ static void fastrpc_get_buff_overlaps(struct fastrpc_invoke_ctx *ctx)
static struct fastrpc_invoke_ctx *fastrpc_context_alloc(
struct fastrpc_user *user, u32 kernel, u32 sc,
- struct fastrpc_invoke_args *args)
+ struct fastrpc_enhanced_invoke *invoke)
{
struct fastrpc_channel_ctx *cctx = user->cctx;
struct fastrpc_invoke_ctx *ctx = NULL;
@@ -604,7 +604,7 @@ static struct fastrpc_invoke_ctx *fastrpc_context_alloc(
kfree(ctx);
return ERR_PTR(-ENOMEM);
}
- ctx->args = args;
+ ctx->args = (struct fastrpc_invoke_args *)invoke->inv.args;
fastrpc_get_buff_overlaps(ctx);
}
@@ -1135,12 +1135,12 @@ static int fastrpc_invoke_send(struct fastrpc_session_ctx *sctx,
}
static int fastrpc_internal_invoke(struct fastrpc_user *fl, u32 kernel,
- u32 handle, u32 sc,
- struct fastrpc_invoke_args *args)
+ struct fastrpc_enhanced_invoke *invoke)
{
struct fastrpc_invoke_ctx *ctx = NULL;
struct fastrpc_buf *buf, *b;
-
+ struct fastrpc_invoke *inv = &invoke->inv;
+ u32 handle, sc;
int err = 0;
if (!fl->sctx)
@@ -1149,12 +1149,14 @@ static int fastrpc_internal_invoke(struct fastrpc_user *fl, u32 kernel,
if (!fl->cctx->rpdev)
return -EPIPE;
+ handle = inv->handle;
+ sc = inv->sc;
if (handle == FASTRPC_INIT_HANDLE && !kernel) {
dev_warn_ratelimited(fl->sctx->dev, "user app trying to send a kernel RPC message (%d)\n", handle);
return -EPERM;
}
- ctx = fastrpc_context_alloc(fl, kernel, sc, args);
+ ctx = fastrpc_context_alloc(fl, kernel, sc, invoke);
if (IS_ERR(ctx))
return PTR_ERR(ctx);
@@ -1236,6 +1238,7 @@ static int fastrpc_init_create_static_process(struct fastrpc_user *fl,
{
struct fastrpc_init_create_static init;
struct fastrpc_invoke_args *args;
+ struct fastrpc_enhanced_invoke ioctl;
struct fastrpc_phy_page pages[1];
char *name;
int err;
@@ -1244,7 +1247,6 @@ static int fastrpc_init_create_static_process(struct fastrpc_user *fl,
u32 namelen;
u32 pageslen;
} inbuf;
- u32 sc;
args = kcalloc(FASTRPC_CREATE_STATIC_PROCESS_NARGS, sizeof(*args), GFP_KERNEL);
if (!args)
@@ -1311,10 +1313,11 @@ static int fastrpc_init_create_static_process(struct fastrpc_user *fl,
args[2].length = sizeof(*pages);
args[2].fd = -1;
- sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_CREATE_STATIC, 3, 0);
+ ioctl.inv.handle = FASTRPC_INIT_HANDLE;
+ ioctl.inv.sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_CREATE_STATIC, 3, 0);
+ ioctl.inv.args = (__u64)args;
- err = fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE,
- sc, args);
+ err = fastrpc_internal_invoke(fl, true, &ioctl);
if (err)
goto err_invoke;
@@ -1354,6 +1357,7 @@ static int fastrpc_init_create_process(struct fastrpc_user *fl,
{
struct fastrpc_init_create init;
struct fastrpc_invoke_args *args;
+ struct fastrpc_enhanced_invoke ioctl;
struct fastrpc_phy_page pages[1];
struct fastrpc_map *map = NULL;
struct fastrpc_buf *imem = NULL;
@@ -1367,7 +1371,6 @@ static int fastrpc_init_create_process(struct fastrpc_user *fl,
u32 attrs;
u32 siglen;
} inbuf;
- u32 sc;
bool unsigned_module = false;
args = kcalloc(FASTRPC_CREATE_PROCESS_NARGS, sizeof(*args), GFP_KERNEL);
@@ -1441,12 +1444,13 @@ static int fastrpc_init_create_process(struct fastrpc_user *fl,
args[5].length = sizeof(inbuf.siglen);
args[5].fd = -1;
- sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_CREATE, 4, 0);
+ ioctl.inv.handle = FASTRPC_INIT_HANDLE;
+ ioctl.inv.sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_CREATE, 4, 0);
if (init.attrs)
- sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_CREATE_ATTR, 4, 0);
+ ioctl.inv.sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_CREATE_ATTR, 4, 0);
+ ioctl.inv.args = (__u64)args;
- err = fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE,
- sc, args);
+ err = fastrpc_internal_invoke(fl, true, &ioctl);
if (err)
goto err_invoke;
@@ -1498,17 +1502,19 @@ static void fastrpc_session_free(struct fastrpc_channel_ctx *cctx,
static int fastrpc_release_current_dsp_process(struct fastrpc_user *fl)
{
struct fastrpc_invoke_args args[1];
+ struct fastrpc_enhanced_invoke ioctl;
int tgid = 0;
- u32 sc;
tgid = fl->tgid;
args[0].ptr = (u64)(uintptr_t) &tgid;
args[0].length = sizeof(tgid);
args[0].fd = -1;
- sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_RELEASE, 1, 0);
- return fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE,
- sc, &args[0]);
+ ioctl.inv.handle = FASTRPC_INIT_HANDLE;
+ ioctl.inv.sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_RELEASE, 1, 0);
+ ioctl.inv.args = (__u64)args;
+
+ return fastrpc_internal_invoke(fl, true, &ioctl);
}
static int fastrpc_device_release(struct inode *inode, struct file *file)
@@ -1644,22 +1650,25 @@ static int fastrpc_dmabuf_alloc(struct fastrpc_user *fl, char __user *argp)
static int fastrpc_init_attach(struct fastrpc_user *fl, int pd)
{
struct fastrpc_invoke_args args[1];
+ struct fastrpc_enhanced_invoke ioctl;
int tgid = fl->tgid;
- u32 sc;
args[0].ptr = (u64)(uintptr_t) &tgid;
args[0].length = sizeof(tgid);
args[0].fd = -1;
- sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_ATTACH, 1, 0);
fl->pd = pd;
- return fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE,
- sc, &args[0]);
+ ioctl.inv.handle = FASTRPC_INIT_HANDLE;
+ ioctl.inv.sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_ATTACH, 1, 0);
+ ioctl.inv.args = (__u64)args;
+
+ return fastrpc_internal_invoke(fl, true, &ioctl);
}
static int fastrpc_invoke(struct fastrpc_user *fl, char __user *argp)
{
struct fastrpc_invoke_args *args = NULL;
+ struct fastrpc_enhanced_invoke ioctl;
struct fastrpc_invoke inv;
u32 nscalars;
int err;
@@ -1681,16 +1690,70 @@ static int fastrpc_invoke(struct fastrpc_user *fl, char __user *argp)
}
}
- err = fastrpc_internal_invoke(fl, false, inv.handle, inv.sc, args);
+ ioctl.inv = inv;
+ ioctl.inv.args = (__u64)args;
+
+ err = fastrpc_internal_invoke(fl, false, &ioctl);
kfree(args);
return err;
}
+static int fastrpc_multimode_invoke(struct fastrpc_user *fl, char __user *argp)
+{
+ struct fastrpc_enhanced_invoke einv;
+ struct fastrpc_invoke_args *args = NULL;
+ struct fastrpc_ioctl_multimode_invoke invoke;
+ u32 nscalars;
+ int err, i;
+
+ if (copy_from_user(&invoke, argp, sizeof(invoke)))
+ return -EFAULT;
+
+ for (i = 0; i < 8; i++) {
+ if (invoke.reserved[i] != 0)
+ return -EINVAL;
+ }
+ if (invoke.rsvd != 0)
+ return -EINVAL;
+
+ switch (invoke.req) {
+ case FASTRPC_INVOKE:
+ /* nscalars is truncated here to max supported value */
+ if (copy_from_user(&einv, (void __user *)(uintptr_t)invoke.invparam,
+ invoke.size))
+ return -EFAULT;
+ for (i = 0; i < 8; i++) {
+ if (einv.reserved[i] != 0)
+ return -EINVAL;
+ }
+ nscalars = REMOTE_SCALARS_LENGTH(einv.inv.sc);
+ if (nscalars) {
+ args = kcalloc(nscalars, sizeof(*args), GFP_KERNEL);
+ if (!args)
+ return -ENOMEM;
+ if (copy_from_user(args, (void __user *)(uintptr_t)einv.inv.args,
+ nscalars * sizeof(*args))) {
+ kfree(args);
+ return -EFAULT;
+ }
+ }
+ einv.inv.args = (__u64)args;
+ err = fastrpc_internal_invoke(fl, false, &einv);
+ kfree(args);
+ break;
+ default:
+ err = -ENOTTY;
+ break;
+ }
+ return err;
+}
+
static int fastrpc_get_info_from_dsp(struct fastrpc_user *fl, uint32_t *dsp_attr_buf,
uint32_t dsp_attr_buf_len)
{
struct fastrpc_invoke_args args[2] = { 0 };
+ struct fastrpc_enhanced_invoke ioctl;
/* Capability filled in userspace */
dsp_attr_buf[0] = 0;
@@ -1703,8 +1766,11 @@ static int fastrpc_get_info_from_dsp(struct fastrpc_user *fl, uint32_t *dsp_attr
args[1].fd = -1;
fl->pd = USER_PD;
- return fastrpc_internal_invoke(fl, true, FASTRPC_DSP_UTILITIES_HANDLE,
- FASTRPC_SCALARS(0, 1, 1), args);
+ ioctl.inv.handle = FASTRPC_DSP_UTILITIES_HANDLE;
+ ioctl.inv.sc = FASTRPC_SCALARS(0, 1, 1);
+ ioctl.inv.args = (__u64)args;
+
+ return fastrpc_internal_invoke(fl, true, &ioctl);
}
static int fastrpc_get_info_from_kernel(struct fastrpc_ioctl_capability *cap,
@@ -1791,10 +1857,10 @@ static int fastrpc_get_dsp_info(struct fastrpc_user *fl, char __user *argp)
static int fastrpc_req_munmap_impl(struct fastrpc_user *fl, struct fastrpc_buf *buf)
{
struct fastrpc_invoke_args args[1] = { [0] = { 0 } };
+ struct fastrpc_enhanced_invoke ioctl;
struct fastrpc_munmap_req_msg req_msg;
struct device *dev = fl->sctx->dev;
int err;
- u32 sc;
req_msg.pgid = fl->tgid;
req_msg.size = buf->size;
@@ -1803,9 +1869,11 @@ static int fastrpc_req_munmap_impl(struct fastrpc_user *fl, struct fastrpc_buf *
args[0].ptr = (u64) (uintptr_t) &req_msg;
args[0].length = sizeof(req_msg);
- sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_MUNMAP, 1, 0);
- err = fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE, sc,
- &args[0]);
+ ioctl.inv.handle = FASTRPC_INIT_HANDLE;
+ ioctl.inv.sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_MUNMAP, 1, 0);
+ ioctl.inv.args = (__u64)args;
+
+ err = fastrpc_internal_invoke(fl, true, &ioctl);
if (!err) {
dev_dbg(dev, "unmmap\tpt 0x%09lx OK\n", buf->raddr);
spin_lock(&fl->lock);
@@ -1849,6 +1917,7 @@ static int fastrpc_req_munmap(struct fastrpc_user *fl, char __user *argp)
static int fastrpc_req_mmap(struct fastrpc_user *fl, char __user *argp)
{
struct fastrpc_invoke_args args[3] = { [0 ... 2] = { 0 } };
+ struct fastrpc_enhanced_invoke ioctl;
struct fastrpc_buf *buf = NULL;
struct fastrpc_mmap_req_msg req_msg;
struct fastrpc_mmap_rsp_msg rsp_msg;
@@ -1856,7 +1925,6 @@ static int fastrpc_req_mmap(struct fastrpc_user *fl, char __user *argp)
struct fastrpc_req_mmap req;
struct device *dev = fl->sctx->dev;
int err;
- u32 sc;
if (copy_from_user(&req, argp, sizeof(req)))
return -EFAULT;
@@ -1899,9 +1967,11 @@ static int fastrpc_req_mmap(struct fastrpc_user *fl, char __user *argp)
args[2].ptr = (u64) (uintptr_t) &rsp_msg;
args[2].length = sizeof(rsp_msg);
- sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_MMAP, 2, 1);
- err = fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE, sc,
- &args[0]);
+ ioctl.inv.handle = FASTRPC_INIT_HANDLE;
+ ioctl.inv.sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_MMAP, 2, 1);
+ ioctl.inv.args = (__u64)args;
+
+ err = fastrpc_internal_invoke(fl, true, &ioctl);
if (err) {
dev_err(dev, "mmap error (len 0x%08llx)\n", buf->size);
goto err_invoke;
@@ -1949,10 +2019,10 @@ static int fastrpc_req_mmap(struct fastrpc_user *fl, char __user *argp)
static int fastrpc_req_mem_unmap_impl(struct fastrpc_user *fl, struct fastrpc_mem_unmap *req)
{
struct fastrpc_invoke_args args[1] = { [0] = { 0 } };
+ struct fastrpc_enhanced_invoke ioctl;
struct fastrpc_map *map = NULL, *iter, *m;
struct fastrpc_mem_unmap_req_msg req_msg = { 0 };
int err = 0;
- u32 sc;
struct device *dev = fl->sctx->dev;
spin_lock(&fl->lock);
@@ -1978,9 +2048,11 @@ static int fastrpc_req_mem_unmap_impl(struct fastrpc_user *fl, struct fastrpc_me
args[0].ptr = (u64) (uintptr_t) &req_msg;
args[0].length = sizeof(req_msg);
- sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_MEM_UNMAP, 1, 0);
- err = fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE, sc,
- &args[0]);
+ ioctl.inv.handle = FASTRPC_INIT_HANDLE;
+ ioctl.inv.sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_MEM_UNMAP, 1, 0);
+ ioctl.inv.args = (__u64)args;
+
+ err = fastrpc_internal_invoke(fl, true, &ioctl);
if (err) {
dev_err(dev, "unmmap\tpt fd = %d, 0x%09llx error\n", map->fd, map->raddr);
return err;
@@ -2003,6 +2075,7 @@ static int fastrpc_req_mem_unmap(struct fastrpc_user *fl, char __user *argp)
static int fastrpc_req_mem_map(struct fastrpc_user *fl, char __user *argp)
{
struct fastrpc_invoke_args args[4] = { [0 ... 3] = { 0 } };
+ struct fastrpc_enhanced_invoke ioctl;
struct fastrpc_mem_map_req_msg req_msg = { 0 };
struct fastrpc_mmap_rsp_msg rsp_msg = { 0 };
struct fastrpc_mem_unmap req_unmap = { 0 };
@@ -2011,7 +2084,6 @@ static int fastrpc_req_mem_map(struct fastrpc_user *fl, char __user *argp)
struct device *dev = fl->sctx->dev;
struct fastrpc_map *map = NULL;
int err;
- u32 sc;
if (copy_from_user(&req, argp, sizeof(req)))
return -EFAULT;
@@ -2047,8 +2119,11 @@ static int fastrpc_req_mem_map(struct fastrpc_user *fl, char __user *argp)
args[3].ptr = (u64) (uintptr_t) &rsp_msg;
args[3].length = sizeof(rsp_msg);
- sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_MEM_MAP, 3, 1);
- err = fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE, sc, &args[0]);
+ ioctl.inv.handle = FASTRPC_INIT_HANDLE;
+ ioctl.inv.sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_MEM_MAP, 3, 1);
+ ioctl.inv.args = (__u64)args;
+
+ err = fastrpc_internal_invoke(fl, true, &ioctl);
if (err) {
dev_err(dev, "mem mmap error, fd %d, vaddr %llx, size %lld\n",
req.fd, req.vaddrin, map->size);
@@ -2088,6 +2163,9 @@ static long fastrpc_device_ioctl(struct file *file, unsigned int cmd,
case FASTRPC_IOCTL_INVOKE:
err = fastrpc_invoke(fl, argp);
break;
+ case FASTRPC_IOCTL_MULTIMODE_INVOKE:
+ err = fastrpc_multimode_invoke(fl, argp);
+ break;
case FASTRPC_IOCTL_INIT_ATTACH:
err = fastrpc_init_attach(fl, ROOT_PD);
break;
diff --git a/include/uapi/misc/fastrpc.h b/include/uapi/misc/fastrpc.h
index f33d914d8f46..45c15be1de58 100644
--- a/include/uapi/misc/fastrpc.h
+++ b/include/uapi/misc/fastrpc.h
@@ -16,6 +16,7 @@
#define FASTRPC_IOCTL_INIT_CREATE_STATIC _IOWR('R', 9, struct fastrpc_init_create_static)
#define FASTRPC_IOCTL_MEM_MAP _IOWR('R', 10, struct fastrpc_mem_map)
#define FASTRPC_IOCTL_MEM_UNMAP _IOWR('R', 11, struct fastrpc_mem_unmap)
+#define FASTRPC_IOCTL_MULTIMODE_INVOKE _IOWR('R', 12, struct fastrpc_ioctl_multimode_invoke)
#define FASTRPC_IOCTL_GET_DSP_INFO _IOWR('R', 13, struct fastrpc_ioctl_capability)
/**
@@ -80,6 +81,31 @@ struct fastrpc_invoke {
__u64 args;
};
+struct fastrpc_enhanced_invoke {
+ struct fastrpc_invoke inv;
+ __u64 crc;
+ __u64 perf_kernel;
+ __u64 perf_dsp;
+ __u32 reserved[8]; /* keeping reserved bits for new requirements */
+};
+
+struct fastrpc_ioctl_multimode_invoke {
+ __u32 req;
+ __u32 rsvd; /* padding field */
+ __u64 invparam;
+ __u64 size;
+ __u32 reserved[8]; /* keeping reserved bits for new requirements */
+};
+
+enum fastrpc_multimode_invoke_type {
+ FASTRPC_INVOKE = 1,
+ FASTRPC_INVOKE_ENHANCED = 2,
+ FASTRPC_INVOKE_CONTROL = 3,
+ FASTRPC_INVOKE_DSPSIGNAL = 4,
+ FASTRPC_INVOKE_NOTIF = 5,
+ FASTRPC_INVOKE_MULTISESSION = 6,
+};
+
struct fastrpc_init_create {
__u32 filelen; /* elf file length */
__s32 filefd; /* fd for the file */
--
2.17.1
Hi Ekansh,
kernel test robot noticed the following build warnings:
[auto build test WARNING on linus/master]
[also build test WARNING on v6.7-rc2 next-20231122]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Ekansh-Gupta/misc-fastrpc-Add-fastrpc-multimode-invoke-request-support/20231121-175147
base: linus/master
patch link: https://lore.kernel.org/r/20231121094844.5764-2-quic_ekangupt%40quicinc.com
patch subject: [PATCH v7 1/5] misc: fastrpc: Add fastrpc multimode invoke request support
config: mips-randconfig-r122-20231122 (https://download.01.org/0day-ci/archive/20231122/[email protected]/config)
compiler: mips-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20231122/[email protected]/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
sparse warnings: (new ones prefixed by >>)
>> drivers/misc/fastrpc.c:607:59: sparse: sparse: non size-preserving integer to pointer cast
>> drivers/misc/fastrpc.c:1318:33: sparse: sparse: non size-preserving pointer to integer cast
drivers/misc/fastrpc.c:1451:33: sparse: sparse: non size-preserving pointer to integer cast
drivers/misc/fastrpc.c:1515:33: sparse: sparse: non size-preserving pointer to integer cast
drivers/misc/fastrpc.c:1663:33: sparse: sparse: non size-preserving pointer to integer cast
drivers/misc/fastrpc.c:1694:33: sparse: sparse: non size-preserving pointer to integer cast
drivers/misc/fastrpc.c:1741:40: sparse: sparse: non size-preserving pointer to integer cast
drivers/misc/fastrpc.c:1771:33: sparse: sparse: non size-preserving pointer to integer cast
drivers/misc/fastrpc.c:1874:33: sparse: sparse: non size-preserving pointer to integer cast
drivers/misc/fastrpc.c:1972:33: sparse: sparse: non size-preserving pointer to integer cast
drivers/misc/fastrpc.c:2053:33: sparse: sparse: non size-preserving pointer to integer cast
drivers/misc/fastrpc.c:2124:33: sparse: sparse: non size-preserving pointer to integer cast
vim +607 drivers/misc/fastrpc.c
573
574 static struct fastrpc_invoke_ctx *fastrpc_context_alloc(
575 struct fastrpc_user *user, u32 kernel, u32 sc,
576 struct fastrpc_enhanced_invoke *invoke)
577 {
578 struct fastrpc_channel_ctx *cctx = user->cctx;
579 struct fastrpc_invoke_ctx *ctx = NULL;
580 unsigned long flags;
581 int ret;
582
583 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
584 if (!ctx)
585 return ERR_PTR(-ENOMEM);
586
587 INIT_LIST_HEAD(&ctx->node);
588 ctx->fl = user;
589 ctx->nscalars = REMOTE_SCALARS_LENGTH(sc);
590 ctx->nbufs = REMOTE_SCALARS_INBUFS(sc) +
591 REMOTE_SCALARS_OUTBUFS(sc);
592
593 if (ctx->nscalars) {
594 ctx->maps = kcalloc(ctx->nscalars,
595 sizeof(*ctx->maps), GFP_KERNEL);
596 if (!ctx->maps) {
597 kfree(ctx);
598 return ERR_PTR(-ENOMEM);
599 }
600 ctx->olaps = kcalloc(ctx->nscalars,
601 sizeof(*ctx->olaps), GFP_KERNEL);
602 if (!ctx->olaps) {
603 kfree(ctx->maps);
604 kfree(ctx);
605 return ERR_PTR(-ENOMEM);
606 }
> 607 ctx->args = (struct fastrpc_invoke_args *)invoke->inv.args;
608 fastrpc_get_buff_overlaps(ctx);
609 }
610
611 /* Released in fastrpc_context_put() */
612 fastrpc_channel_ctx_get(cctx);
613
614 ctx->sc = sc;
615 ctx->retval = -1;
616 ctx->pid = current->pid;
617 ctx->tgid = user->tgid;
618 ctx->cctx = cctx;
619 init_completion(&ctx->work);
620 INIT_WORK(&ctx->put_work, fastrpc_context_put_wq);
621
622 spin_lock(&user->lock);
623 list_add_tail(&ctx->node, &user->pending);
624 spin_unlock(&user->lock);
625
626 spin_lock_irqsave(&cctx->lock, flags);
627 ret = idr_alloc_cyclic(&cctx->ctx_idr, ctx, 1,
628 FASTRPC_CTX_MAX, GFP_ATOMIC);
629 if (ret < 0) {
630 spin_unlock_irqrestore(&cctx->lock, flags);
631 goto err_idr;
632 }
633 ctx->ctxid = ret << 4;
634 spin_unlock_irqrestore(&cctx->lock, flags);
635
636 kref_init(&ctx->refcount);
637
638 return ctx;
639 err_idr:
640 spin_lock(&user->lock);
641 list_del(&ctx->node);
642 spin_unlock(&user->lock);
643 fastrpc_channel_ctx_put(cctx);
644 kfree(ctx->maps);
645 kfree(ctx->olaps);
646 kfree(ctx);
647
648 return ERR_PTR(ret);
649 }
650
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki