The patch titled
Usbatm: switch to kthread API, stop using kill_proc()
has been removed from the -mm tree. Its filename was
usbatm-switch-to-kthread-api-stop-using-kill_proc.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: Usbatm: switch to kthread API, stop using kill_proc()
From: Pavel Emelyanov <xemul@xxxxxxxxxx>
First, we kill one more user of kernel_thread, which is scheduled for
removal. Second - we kill one of the last users of kill_proc - the
function which is also to be removed, because it uses a pid_t which is not
safe now.
Signed-off-by: Pavel Emelyanov <xemul@xxxxxxxxxx>
Tested-by: Duncan Sands <baldrick.bulk@xxxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/usb/atm/usbatm.c | 25 ++++++++++++++-----------
drivers/usb/atm/usbatm.h | 2 +-
2 files changed, 15 insertions(+), 12 deletions(-)
diff -puN drivers/usb/atm/usbatm.c~usbatm-switch-to-kthread-api-stop-using-kill_proc drivers/usb/atm/usbatm.c
--- a/drivers/usb/atm/usbatm.c~usbatm-switch-to-kthread-api-stop-using-kill_proc
+++ a/drivers/usb/atm/usbatm.c
@@ -80,6 +80,7 @@
#include <linux/stat.h>
#include <linux/timer.h>
#include <linux/wait.h>
+#include <linux/kthread.h>
#ifdef VERBOSE_DEBUG
static int usbatm_print_packet(const unsigned char *data, int len);
@@ -1014,10 +1015,7 @@ static int usbatm_do_heavy_init(void *ar
struct usbatm_data *instance = arg;
int ret;
- daemonize(instance->driver->driver_name);
allow_signal(SIGTERM);
- instance->thread_pid = current->pid;
-
complete(&instance->thread_started);
ret = instance->driver->heavy_init(instance, instance->usb_intf);
@@ -1026,7 +1024,7 @@ static int usbatm_do_heavy_init(void *ar
ret = usbatm_atm_init(instance);
mutex_lock(&instance->serialize);
- instance->thread_pid = -1;
+ instance->thread = NULL;
mutex_unlock(&instance->serialize);
complete_and_exit(&instance->thread_exited, ret);
@@ -1034,13 +1032,18 @@ static int usbatm_do_heavy_init(void *ar
static int usbatm_heavy_init(struct usbatm_data *instance)
{
- int ret = kernel_thread(usbatm_do_heavy_init, instance, CLONE_FS | CLONE_FILES);
+ struct task_struct *t;
- if (ret < 0) {
- usb_err(instance, "%s: failed to create kernel_thread (%d)!\n", __func__, ret);
- return ret;
+ t = kthread_create(usbatm_do_heavy_init, instance,
+ instance->driver->driver_name);
+ if (IS_ERR(t)) {
+ usb_err(instance, "%s: failed to create kernel_thread (%ld)!\n",
+ __func__, PTR_ERR(t));
+ return PTR_ERR(t);
}
+ instance->thread = t;
+ wake_up_process(t);
wait_for_completion(&instance->thread_started);
return 0;
@@ -1124,7 +1127,7 @@ int usbatm_usb_probe(struct usb_interfac
kref_init(&instance->refcount); /* dropped in usbatm_usb_disconnect */
mutex_init(&instance->serialize);
- instance->thread_pid = -1;
+ instance->thread = NULL;
init_completion(&instance->thread_started);
init_completion(&instance->thread_exited);
@@ -1287,8 +1290,8 @@ void usbatm_usb_disconnect(struct usb_in
mutex_lock(&instance->serialize);
instance->disconnected = 1;
- if (instance->thread_pid >= 0)
- kill_proc(instance->thread_pid, SIGTERM, 1);
+ if (instance->thread != NULL)
+ send_sig(SIGTERM, instance->thread, 1);
mutex_unlock(&instance->serialize);
wait_for_completion(&instance->thread_exited);
diff -puN drivers/usb/atm/usbatm.h~usbatm-switch-to-kthread-api-stop-using-kill_proc drivers/usb/atm/usbatm.h
--- a/drivers/usb/atm/usbatm.h~usbatm-switch-to-kthread-api-stop-using-kill_proc
+++ a/drivers/usb/atm/usbatm.h
@@ -176,7 +176,7 @@ struct usbatm_data {
int disconnected;
/* heavy init */
- int thread_pid;
+ struct task_struct *thread;
struct completion thread_started;
struct completion thread_exited;
_
Patches currently in -mm which might be from xemul@xxxxxxxxxx are
origin.patch
use-find_task_by_vpid-in-audit-code.patch
ia64-fix-ptrace-inside-a-namespace.patch
git-net.patch
udf-fix-anchor-point-detection.patch
remove-unused-variable-from-send_signal.patch
turn-legacy_queue-macro-into-static-inline-function.patch
consolidate-checking-for-ignored-legacy-signals.patch
consolidate-checking-for-ignored-legacy-signals-simplify.patch
free_pidmap-turn-it-into-free_pidmapstruct-upid.patch
use-find_task_by_vpid-in-taskstats.patch
deprecate-find_task_by_pid.patch
reiser4.patch
put_pid-make-sure-we-dont-free-the-live-pid.patch
-
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