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| author | Peter Zijlstra <peterz@infradead.org> | 2013-10-07 11:29:20 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-10-09 14:47:45 +0200 |
| commit | 90572890d202527c366aa9489b32404e88a7c020 (patch) | |
| tree | 0577f3b043e312f6d53e50105b236514f7df2455 /kernel/bounds.c | |
| parent | e1dda8a797b59d7ec4b17e393152ec3273a552d5 (diff) | |
| download | lwn-90572890d202527c366aa9489b32404e88a7c020.tar.gz lwn-90572890d202527c366aa9489b32404e88a7c020.zip | |
mm: numa: Change page last {nid,pid} into {cpu,pid}
Change the per page last fault tracking to use cpu,pid instead of
nid,pid. This will allow us to try and lookup the alternate task more
easily. Note that even though it is the cpu that is store in the page
flags that the mpol_misplaced decision is still based on the node.
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Mel Gorman <mgorman@suse.de>
Reviewed-by: Rik van Riel <riel@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/1381141781-10992-43-git-send-email-mgorman@suse.de
[ Fixed build failure on 32-bit systems. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/bounds.c')
| -rw-r--r-- | kernel/bounds.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/bounds.c b/kernel/bounds.c index 0c9b862292b2..e8ca97b5c386 100644 --- a/kernel/bounds.c +++ b/kernel/bounds.c @@ -10,6 +10,7 @@ #include <linux/mmzone.h> #include <linux/kbuild.h> #include <linux/page_cgroup.h> +#include <linux/log2.h> void foo(void) { @@ -17,5 +18,8 @@ void foo(void) DEFINE(NR_PAGEFLAGS, __NR_PAGEFLAGS); DEFINE(MAX_NR_ZONES, __MAX_NR_ZONES); DEFINE(NR_PCG_FLAGS, __NR_PCG_FLAGS); +#ifdef CONFIG_SMP + DEFINE(NR_CPUS_BITS, ilog2(CONFIG_NR_CPUS)); +#endif /* End of constants */ } |