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    Subject[PATCH -mm 5/6] Freezer: Remove PF_NOFREEZE from bluetooth threads
    Date
    From: Rafael J. Wysocki <rjw@sisk.pl>

    Remove PF_NOFREEZE from the bluetooth threads, adding try_to_freeze() calls as
    required.

    Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
    Acked-by: Pavel Machek <pavel@ucw.cz>
    Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
    ---
    net/bluetooth/bnep/core.c | 6 ++++--
    net/bluetooth/cmtp/core.c | 4 +++-
    net/bluetooth/hidp/core.c | 4 +++-
    net/bluetooth/rfcomm/core.c | 4 +++-
    4 files changed, 13 insertions(+), 5 deletions(-)

    Index: linux-2.6.20-mm2/net/bluetooth/bnep/core.c
    ===================================================================
    --- linux-2.6.20-mm2.orig/net/bluetooth/bnep/core.c 2007-02-23 00:26:58.000000000 +0100
    +++ linux-2.6.20-mm2/net/bluetooth/bnep/core.c 2007-02-23 00:30:47.000000000 +0100
    @@ -39,6 +39,7 @@
    #include <linux/errno.h>
    #include <linux/smp_lock.h>
    #include <linux/net.h>
    +#include <linux/freezer.h>
    #include <net/sock.h>

    #include <linux/socket.h>
    @@ -473,11 +474,12 @@ static int bnep_session(void *arg)

    daemonize("kbnepd %s", dev->name);
    set_user_nice(current, -15);
    - current->flags |= PF_NOFREEZE;

    init_waitqueue_entry(&wait, current);
    add_wait_queue(sk->sk_sleep, &wait);
    while (!atomic_read(&s->killed)) {
    + try_to_freeze();
    +
    set_current_state(TASK_INTERRUPTIBLE);

    // RX
    Index: linux-2.6.20-mm2/net/bluetooth/cmtp/core.c
    ===================================================================
    --- linux-2.6.20-mm2.orig/net/bluetooth/cmtp/core.c 2007-02-23 00:26:58.000000000 +0100
    +++ linux-2.6.20-mm2/net/bluetooth/cmtp/core.c 2007-02-23 00:31:01.000000000 +0100
    @@ -34,6 +34,7 @@
    #include <linux/ioctl.h>
    #include <linux/file.h>
    #include <linux/init.h>
    +#include <linux/freezer.h>
    #include <net/sock.h>

    #include <linux/isdn/capilli.h>
    @@ -287,11 +288,12 @@ static int cmtp_session(void *arg)

    daemonize("kcmtpd_ctr_%d", session->num);
    set_user_nice(current, -15);
    - current->flags |= PF_NOFREEZE;

    init_waitqueue_entry(&wait, current);
    add_wait_queue(sk->sk_sleep, &wait);
    while (!atomic_read(&session->terminate)) {
    + try_to_freeze();
    +
    set_current_state(TASK_INTERRUPTIBLE);

    if (sk->sk_state != BT_CONNECTED)
    Index: linux-2.6.20-mm2/net/bluetooth/hidp/core.c
    ===================================================================
    --- linux-2.6.20-mm2.orig/net/bluetooth/hidp/core.c 2007-02-23 00:26:58.000000000 +0100
    +++ linux-2.6.20-mm2/net/bluetooth/hidp/core.c 2007-02-23 00:31:17.000000000 +0100
    @@ -35,6 +35,7 @@
    #include <linux/file.h>
    #include <linux/init.h>
    #include <linux/wait.h>
    +#include <linux/freezer.h>
    #include <net/sock.h>

    #include <linux/input.h>
    @@ -547,13 +548,14 @@ static int hidp_session(void *arg)

    daemonize("khidpd_%04x%04x", vendor, product);
    set_user_nice(current, -15);
    - current->flags |= PF_NOFREEZE;

    init_waitqueue_entry(&ctrl_wait, current);
    init_waitqueue_entry(&intr_wait, current);
    add_wait_queue(ctrl_sk->sk_sleep, &ctrl_wait);
    add_wait_queue(intr_sk->sk_sleep, &intr_wait);
    while (!atomic_read(&session->terminate)) {
    + try_to_freeze();
    +
    set_current_state(TASK_INTERRUPTIBLE);

    if (ctrl_sk->sk_state != BT_CONNECTED || intr_sk->sk_state != BT_CONNECTED)
    Index: linux-2.6.20-mm2/net/bluetooth/rfcomm/core.c
    ===================================================================
    --- linux-2.6.20-mm2.orig/net/bluetooth/rfcomm/core.c 2007-02-23 00:26:58.000000000 +0100
    +++ linux-2.6.20-mm2/net/bluetooth/rfcomm/core.c 2007-02-23 00:31:43.000000000 +0100
    @@ -37,6 +37,7 @@
    #include <linux/device.h>
    #include <linux/net.h>
    #include <linux/mutex.h>
    +#include <linux/freezer.h>

    #include <net/sock.h>
    #include <asm/uaccess.h>
    @@ -1851,6 +1852,8 @@ static void rfcomm_worker(void)
    BT_DBG("");

    while (!atomic_read(&terminate)) {
    + try_to_freeze();
    +
    if (!test_bit(RFCOMM_SCHED_WAKEUP, &rfcomm_event)) {
    /* No pending events. Let's sleep.
    * Incoming connections and data will wake us up. */
    @@ -1937,7 +1940,6 @@ static int rfcomm_run(void *unused)

    daemonize("krfcommd");
    set_user_nice(current, -10);
    - current->flags |= PF_NOFREEZE;

    BT_DBG("");

    -
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