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authorFelix Fietkau <nbd@openwrt.org>2009-06-14 20:42:33 +0000
committerFelix Fietkau <nbd@openwrt.org>2009-06-14 20:42:33 +0000
commitf88360279f91387dc61725226ad38c3c95d3790a (patch)
tree66d21f3483914eb7e674c45f3497ab8912094ac0 /target/linux/goldfish/patches-2.6.30/0070-PM-wakelock-Abort-task-freezing-if-a-wake-lock-is.patch
parenta6d8f8be9e06c5ffb03f815c8c76ba743c64aa3d (diff)
downloadmtk-20170518-f88360279f91387dc61725226ad38c3c95d3790a.zip
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add the 'goldfish' target, useful for experimenting with virtual phone hardware (includes the emulator)
SVN-Revision: 16459
Diffstat (limited to 'target/linux/goldfish/patches-2.6.30/0070-PM-wakelock-Abort-task-freezing-if-a-wake-lock-is.patch')
-rw-r--r--target/linux/goldfish/patches-2.6.30/0070-PM-wakelock-Abort-task-freezing-if-a-wake-lock-is.patch64
1 files changed, 64 insertions, 0 deletions
diff --git a/target/linux/goldfish/patches-2.6.30/0070-PM-wakelock-Abort-task-freezing-if-a-wake-lock-is.patch b/target/linux/goldfish/patches-2.6.30/0070-PM-wakelock-Abort-task-freezing-if-a-wake-lock-is.patch
new file mode 100644
index 0000000..a93df9a
--- /dev/null
+++ b/target/linux/goldfish/patches-2.6.30/0070-PM-wakelock-Abort-task-freezing-if-a-wake-lock-is.patch
@@ -0,0 +1,64 @@
+From 3f8e407c418205252f00615da4d0182e8c960344 Mon Sep 17 00:00:00 2001
+From: =?utf-8?q?Arve=20Hj=C3=B8nnev=C3=A5g?= <arve@android.com>
+Date: Tue, 14 Oct 2008 16:02:39 -0700
+Subject: [PATCH 070/134] PM: wakelock: Abort task freezing if a wake lock is held.
+
+Avoids a problem where the device sometimes hangs for 20 seconds
+before the screen is turned on.
+---
+ kernel/power/process.c | 23 ++++++++++++++++++-----
+ 1 files changed, 18 insertions(+), 5 deletions(-)
+
+--- a/kernel/power/process.c
++++ b/kernel/power/process.c
+@@ -13,6 +13,7 @@
+ #include <linux/module.h>
+ #include <linux/syscalls.h>
+ #include <linux/freezer.h>
++#include <linux/wakelock.h>
+
+ /*
+ * Timeout for stopping processes
+@@ -36,6 +37,7 @@ static int try_to_freeze_tasks(bool sig_
+ struct timeval start, end;
+ u64 elapsed_csecs64;
+ unsigned int elapsed_csecs;
++ unsigned int wakeup = 0;
+
+ do_gettimeofday(&start);
+
+@@ -62,6 +64,10 @@ static int try_to_freeze_tasks(bool sig_
+ } while_each_thread(g, p);
+ read_unlock(&tasklist_lock);
+ yield(); /* Yield is okay here */
++ if (todo && has_wake_lock(WAKE_LOCK_SUSPEND)) {
++ wakeup = 1;
++ break;
++ }
+ if (time_after(jiffies, end_time))
+ break;
+ } while (todo);
+@@ -77,11 +83,18 @@ static int try_to_freeze_tasks(bool sig_
+ * and caller must call thaw_processes() if something fails),
+ * but it cleans up leftover PF_FREEZE requests.
+ */
+- printk("\n");
+- printk(KERN_ERR "Freezing of tasks failed after %d.%02d seconds "
+- "(%d tasks refusing to freeze):\n",
+- elapsed_csecs / 100, elapsed_csecs % 100, todo);
+- show_state();
++ if(wakeup) {
++ printk("\n");
++ printk(KERN_ERR "Freezing of %s aborted\n",
++ sig_only ? "user space " : "tasks ");
++ }
++ else {
++ printk("\n");
++ printk(KERN_ERR "Freezing of tasks failed after %d.%02d seconds "
++ "(%d tasks refusing to freeze):\n",
++ elapsed_csecs / 100, elapsed_csecs % 100, todo);
++ show_state();
++ }
+ read_lock(&tasklist_lock);
+ do_each_thread(g, p) {
+ task_lock(p);