From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Rafael J. Wysocki" Subject: [RFC][PATCH 1/3] swsusp: Use suspend_console Date: Wed, 16 Aug 2006 13:06:26 +0200 Message-ID: <200608161306.26450.rjw@sisk.pl> References: <200608151509.06087.rjw@sisk.pl> <20060816104143.GC9497@elf.ucw.cz> <200608161304.51758.rjw@sisk.pl> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <200608161304.51758.rjw@sisk.pl> Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org To: Pavel Machek Cc: LKML , Linux PM List-Id: linux-pm@vger.kernel.org Add suspend_console() and resume_console() to the suspend-to-disk code paths so that the users of netconsole can use swsusp with it. Signed-off-by: Rafael J. Wysocki --- kernel/power/disk.c | 8 ++++++++ kernel/power/user.c | 8 +++++++- 2 files changed, 15 insertions(+), 1 deletion(-) Index: linux-2.6.18-rc4-mm1/kernel/power/disk.c =================================================================== --- linux-2.6.18-rc4-mm1.orig/kernel/power/disk.c 2006-08-16 11:51:35.000000000 +0200 +++ linux-2.6.18-rc4-mm1/kernel/power/disk.c 2006-08-16 11:58:01.000000000 +0200 @@ -18,6 +18,7 @@ #include #include #include +#include #include #include "power.h" @@ -119,8 +120,10 @@ int pm_suspend_disk(void) if (error) return error; + suspend_console(); error = device_suspend(PMSG_FREEZE); if (error) { + resume_console(); printk("Some devices failed to suspend\n"); unprepare_processes(); return error; @@ -133,6 +136,7 @@ int pm_suspend_disk(void) if (in_suspend) { device_resume(); + resume_console(); pr_debug("PM: writing image.\n"); error = swsusp_write(); if (!error) @@ -148,6 +152,7 @@ int pm_suspend_disk(void) swsusp_free(); Done: device_resume(); + resume_console(); unprepare_processes(); return error; } @@ -212,7 +217,9 @@ static int software_resume(void) pr_debug("PM: Preparing devices for restore.\n"); + suspend_console(); if ((error = device_suspend(PMSG_PRETHAW))) { + resume_console(); printk("Some devices failed to suspend\n"); swsusp_free(); goto Thaw; @@ -224,6 +231,7 @@ static int software_resume(void) swsusp_resume(); pr_debug("PM: Restore failed, recovering.n"); device_resume(); + resume_console(); Thaw: unprepare_processes(); Done: Index: linux-2.6.18-rc4-mm1/kernel/power/user.c =================================================================== --- linux-2.6.18-rc4-mm1.orig/kernel/power/user.c 2006-08-16 11:51:35.000000000 +0200 +++ linux-2.6.18-rc4-mm1/kernel/power/user.c 2006-08-16 11:58:01.000000000 +0200 @@ -19,6 +19,7 @@ #include #include #include +#include #include #include @@ -173,12 +174,14 @@ static int snapshot_ioctl(struct inode * /* Free memory before shutting down devices. */ error = swsusp_shrink_memory(); if (!error) { + suspend_console(); error = device_suspend(PMSG_FREEZE); if (!error) { in_suspend = 1; error = swsusp_suspend(); device_resume(); } + resume_console(); } up(&pm_sem); if (!error) @@ -196,11 +199,13 @@ static int snapshot_ioctl(struct inode * } down(&pm_sem); pm_prepare_console(); + suspend_console(); error = device_suspend(PMSG_PRETHAW); if (!error) { error = swsusp_resume(); device_resume(); } + resume_console(); pm_restore_console(); up(&pm_sem); break; @@ -289,6 +294,7 @@ static int snapshot_ioctl(struct inode * } /* Put devices to sleep */ + suspend_console(); error = device_suspend(PMSG_SUSPEND); if (error) { printk(KERN_ERR "Failed to suspend some devices.\n"); @@ -299,7 +305,7 @@ static int snapshot_ioctl(struct inode * /* Wake up devices */ device_resume(); } - + resume_console(); if (pm_ops->finish) pm_ops->finish(PM_SUSPEND_MEM);