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| author | Len Brown <len.brown@intel.com> | 2005-07-12 17:21:56 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2005-07-12 17:21:56 -0400 |
| commit | 5028770a42e7bc4d15791a44c28f0ad539323807 (patch) | |
| tree | 74800e35129775413c13ce7caf036ca19e3ce56c /kernel/power | |
| parent | 9f02d6b7b43d46a74dd385f06090104ecd0fb807 (diff) | |
| parent | d8683a0cb5d09cb7f19feefa708424a84577e68f (diff) | |
| download | linux-5028770a42e7bc4d15791a44c28f0ad539323807.tar.bz2 | |
[ACPI] merge acpi-2.6.12 branch into latest Linux 2.6.13-rc...
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'kernel/power')
| -rw-r--r-- | kernel/power/main.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/kernel/power/main.c b/kernel/power/main.c index c94cb9e95090..71aa0fd22007 100644 --- 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; @@ -67,6 +71,16 @@ static int suspend_prepare(suspend_state_t 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; @@ -194,7 +208,7 @@ int software_suspend(void) int pm_suspend(suspend_state_t state) { - if (state > PM_SUSPEND_ON && state < PM_SUSPEND_MAX) + if (state > PM_SUSPEND_ON && state <= PM_SUSPEND_MAX) return enter_state(state); return -EINVAL; } |