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| author | Rafael J. Wysocki <rjw@sisk.pl> | 2009-05-24 22:16:31 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2009-06-12 21:32:32 +0200 |
| commit | c6f37f12197ac3bd2e5a35f2f0e195ae63d437de (patch) | |
| tree | e9609ca63d211911582afcc4b8314887b85a6c46 | |
| parent | PM: Remove bus_type suspend_late()/resume_early() V2 (diff) | |
| download | linux-c6f37f12197ac3bd2e5a35f2f0e195ae63d437de.tar.xz linux-c6f37f12197ac3bd2e5a35f2f0e195ae63d437de.zip | |
PM/Suspend: Do not shrink memory before suspend
Remove the shrinking of memory from the suspend-to-RAM code, where
it is not really necessary.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Nigel Cunningham <nigel@tuxonice.net>
Acked-by: Wu Fengguang <fengguang.wu@intel.com>
| -rw-r--r-- | kernel/power/main.c | 20 | ||||
| -rw-r--r-- | mm/vmscan.c | 4 |
2 files changed, 3 insertions, 21 deletions
diff --git a/kernel/power/main.c b/kernel/power/main.c index 46386b9f8dd1..2a19f347bd8a 100644 --- a/kernel/power/main.c +++ b/kernel/power/main.c @@ -188,9 +188,6 @@ static void suspend_test_finish(const char *label) #endif -/* This is just an arbitrary number */ -#define FREE_PAGE_NUMBER (100) - static struct platform_suspend_ops *suspend_ops; /** @@ -226,7 +223,6 @@ int suspend_valid_only_mem(suspend_state_t state) static int suspend_prepare(void) { int error; - unsigned int free_pages; if (!suspend_ops || !suspend_ops->enter) return -EPERM; @@ -241,24 +237,10 @@ static int suspend_prepare(void) if (error) goto Finish; - if (suspend_freeze_processes()) { - error = -EAGAIN; - goto Thaw; - } - - free_pages = global_page_state(NR_FREE_PAGES); - if (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"); - } - } + error = suspend_freeze_processes(); if (!error) return 0; - Thaw: suspend_thaw_processes(); usermodehelper_enable(); Finish: diff --git a/mm/vmscan.c b/mm/vmscan.c index d254306562cd..95c08a8cc2ba 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -2056,7 +2056,7 @@ unsigned long global_lru_pages(void) + global_page_state(NR_INACTIVE_FILE); } -#ifdef CONFIG_PM +#ifdef CONFIG_HIBERNATION /* * Helper function for shrink_all_memory(). Tries to reclaim 'nr_pages' pages * from LRU lists system-wide, for given pass and priority. @@ -2196,7 +2196,7 @@ out: return sc.nr_reclaimed; } -#endif +#endif /* CONFIG_HIBERNATION */ /* It's optimal to keep kswapds on the same CPUs as their memory, but not required for correctness. So if the last cpu in a node goes |