The patch titled
Freezer: return int from freeze_processes
has been removed from the -mm tree. Its filename was
freezer-return-int-from-freeze_processes.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: Freezer: return int from freeze_processes
From: Rafael J. Wysocki <rjw@xxxxxxx>
Make try_to_freeze_tasks() and freeze_processes() return -EBUSY on failure
instead of the number of unfrozen tasks (none of the callers actually uses
this number).
Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx>
Acked-by: Pavel Machek <pavel@xxxxxx>
Cc: Gautham R Shenoy <ego@xxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/power/process.c | 21 +++++++++------------
1 file changed, 9 insertions(+), 12 deletions(-)
diff -puN kernel/power/process.c~freezer-return-int-from-freeze_processes kernel/power/process.c
--- a/kernel/power/process.c~freezer-return-int-from-freeze_processes
+++ a/kernel/power/process.c
@@ -105,7 +105,7 @@ static void cancel_freezing(struct task_
}
}
-static unsigned int try_to_freeze_tasks(int freeze_user_space)
+static int try_to_freeze_tasks(int freeze_user_space)
{
struct task_struct *g, *p;
unsigned long end_time;
@@ -176,28 +176,25 @@ static unsigned int try_to_freeze_tasks(
read_unlock(&tasklist_lock);
}
- return todo;
+ return todo ? -EBUSY : 0;
}
/**
* freeze_processes - tell processes to enter the refrigerator
- *
- * Returns 0 on success, or the number of processes that didn't freeze,
- * although they were told to.
*/
int freeze_processes(void)
{
- unsigned int nr_unfrozen;
+ int error;
printk("Stopping tasks ... ");
- nr_unfrozen = try_to_freeze_tasks(FREEZER_USER_SPACE);
- if (nr_unfrozen)
- return nr_unfrozen;
+ error = try_to_freeze_tasks(FREEZER_USER_SPACE);
+ if (error)
+ return error;
sys_sync();
- nr_unfrozen = try_to_freeze_tasks(FREEZER_KERNEL_THREADS);
- if (nr_unfrozen)
- return nr_unfrozen;
+ error = try_to_freeze_tasks(FREEZER_KERNEL_THREADS);
+ if (error)
+ return error;
printk("done.\n");
BUG_ON(in_atomic());
_
Patches currently in -mm which might be from rjw@xxxxxxx are
origin.patch
acpi-implement-the-set_target-callback-from-pm_ops.patch
acpi-add-acpi_pm_device_sleep_state-helper-routine.patch
pm-move-definition-of-struct-pm_ops-to-suspendh.patch
pm-rename-struct-pm_ops-and-related-things.patch
pm-rework-struct-platform_suspend_ops.patch
pm-fix-compilation-of-suspend-code-if-config_pm-is-unset.patch
pm-make-suspend_ops-static.patch
pm-rework-struct-hibernation_ops.patch
pm-rename-hibernation_ops-to-platform_hibernation_ops.patch
shrink_slab-handle-bad-shrinkers.patch
-
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