tree 2d6b2df724d5973eb9baeae70cf3742639404021 parent e2a5b420f716cd1a46674b1a90389612eced916f author David Shaohua Li <[EMAIL PROTECTED]> Sat, 19 Mar 2005 02:27:13 -0500 committer Len Brown <[EMAIL PROTECTED]> Tue, 12 Jul 2005 07:21:54 -0400
[ACPI] Suspend to RAM fix Free some RAM before entering S3 so that upon resume we can be sure early allocations will succeed. http://bugzilla.kernel.org/show_bug.cgi?id=3469 Signed-off-by: David Shaohua Li <[EMAIL PROTECTED]> Signed-off-by: Len Brown <[EMAIL PROTECTED]> kernel/power/main.c | 14 ++++++++++++++ 1 files changed, 14 insertions(+) diff --git a/kernel/power/main.c b/kernel/power/main.c --- a/kernel/power/main.c +++ b/kernel/power/main.c @@ -19,6 +19,9 @@ #include "power.h" +/*This is just an arbitrary number */ +#define FREE_PAGE_NUMBER (100) + DECLARE_MUTEX(pm_sem); struct pm_ops * pm_ops = NULL; @@ -49,6 +52,7 @@ void pm_set_ops(struct pm_ops * ops) static int suspend_prepare(suspend_state_t state) { int error = 0; + unsigned int free_pages; if (!pm_ops || !pm_ops->enter) return -EPERM; @@ -60,6 +64,16 @@ static int suspend_prepare(suspend_state goto Thaw; } + if ((free_pages = nr_free_pages()) < FREE_PAGE_NUMBER) { + pr_debug("PM: free some memory\n"); + shrink_all_memory(FREE_PAGE_NUMBER - free_pages); + if (nr_free_pages() < FREE_PAGE_NUMBER) { + error = -ENOMEM; + printk(KERN_ERR "PM: No enough memory\n"); + goto Thaw; + } + } + if (pm_ops->prepare) { if ((error = pm_ops->prepare(state))) goto Thaw; - To unsubscribe from this list: send the line "unsubscribe bk-commits-head" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
