diff options
Diffstat (limited to 'meta-moblin/packages/linux/linux-moblin-2.6.27/0028-fastboot-sync-the-async-execution-before-late_initc.patch')
| -rw-r--r-- | meta-moblin/packages/linux/linux-moblin-2.6.27/0028-fastboot-sync-the-async-execution-before-late_initc.patch | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/meta-moblin/packages/linux/linux-moblin-2.6.27/0028-fastboot-sync-the-async-execution-before-late_initc.patch b/meta-moblin/packages/linux/linux-moblin-2.6.27/0028-fastboot-sync-the-async-execution-before-late_initc.patch new file mode 100644 index 0000000000..d1ff95a39f --- /dev/null +++ b/meta-moblin/packages/linux/linux-moblin-2.6.27/0028-fastboot-sync-the-async-execution-before-late_initc.patch @@ -0,0 +1,92 @@ +From 660625fb93f2fc0e633da9cb71d13d895b385f64 Mon Sep 17 00:00:00 2001 +From: Arjan van de Ven <arjan@linux.intel.com> +Date: Sun, 20 Jul 2008 09:00:41 -0700 +Subject: [PATCH] fastboot: sync the async execution before late_initcall and move level 6s (sync) first + +Rene Herman points out several cases where it's basically needed to have +all level 6/6a/6s calls done before the level 7 (late_initcall) code +runs. This patch adds a sync point in the transition from the 6's to the +7's. + +Second, this patch makes sure that level 6s (sync) happens before the +async code starts, and puts a user in driver/pci in this category that +needs to happen before device init. + +Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> +Signed-off-by: Ingo Molnar <mingo@elte.hu> +--- + drivers/pci/pci.c | 2 +- + include/asm-generic/vmlinux.lds.h | 3 ++- + init/main.c | 14 +++++++++++++- + 3 files changed, 16 insertions(+), 3 deletions(-) + +Index: linux-2.6.27/drivers/pci/pci.c +=================================================================== +--- linux-2.6.27.orig/drivers/pci/pci.c 2008-10-14 16:55:30.000000000 +0200 ++++ linux-2.6.27/drivers/pci/pci.c 2008-10-14 17:01:42.000000000 +0200 +@@ -1909,7 +1909,7 @@ static int __devinit pci_setup(char *str + } + early_param("pci", pci_setup); + +-device_initcall(pci_init); ++device_initcall_sync(pci_init); + + EXPORT_SYMBOL(pci_reenable_device); + EXPORT_SYMBOL(pci_enable_device_io); +Index: linux-2.6.27/include/asm-generic/vmlinux.lds.h +=================================================================== +--- linux-2.6.27.orig/include/asm-generic/vmlinux.lds.h 2008-10-14 17:00:59.000000000 +0200 ++++ linux-2.6.27/include/asm-generic/vmlinux.lds.h 2008-10-14 17:01:42.000000000 +0200 +@@ -376,11 +376,12 @@ + *(.initcall5.init) \ + *(.initcall5s.init) \ + *(.initcallrootfs.init) \ ++ *(.initcall6s.init) \ + __async_initcall_start = .; \ + *(.initcall6a.init) \ + __async_initcall_end = .; \ + *(.initcall6.init) \ +- *(.initcall6s.init) \ ++ __device_initcall_end = .; \ + *(.initcall7.init) \ + *(.initcall7s.init) + +Index: linux-2.6.27/init/main.c +=================================================================== +--- linux-2.6.27.orig/init/main.c 2008-10-14 17:01:38.000000000 +0200 ++++ linux-2.6.27/init/main.c 2008-10-14 17:01:42.000000000 +0200 +@@ -746,6 +746,7 @@ int do_one_initcall(initcall_t fn) + + extern initcall_t __initcall_start[], __initcall_end[], __early_initcall_end[]; + extern initcall_t __async_initcall_start[], __async_initcall_end[]; ++extern initcall_t __device_initcall_end[]; + + static void __init do_async_initcalls(struct work_struct *dummy) + { +@@ -767,7 +768,13 @@ static void __init do_initcalls(void) + { + initcall_t *call; + static DECLARE_WORK(async_work, do_async_initcalls); +- int phase = 0; /* 0 = levels 0 - 6, 1 = level 6a, 2 = after level 6a */ ++ /* ++ * 0 = levels 0 - 6, ++ * 1 = level 6a, ++ * 2 = after level 6a, ++ * 3 = after level 6 ++ */ ++ int phase = 0; + + async_init_wq = create_singlethread_workqueue("kasyncinit"); + +@@ -778,6 +785,11 @@ static void __init do_initcalls(void) + } + if (phase == 1 && call >= __async_initcall_end) + phase = 2; ++ if (phase == 2 && call >= __device_initcall_end) { ++ phase = 3; ++ /* make sure all async work is done before level 7 */ ++ flush_workqueue(async_init_wq); ++ } + if (phase != 1) + do_one_initcall(*call); + } |