| Message ID | 20081114220734.GA26013@austin.ibm.com (mailing list archive) |
|---|---|
| State | Accepted, archived |
| Commit | a6326e98a28d8a57f693369c82559543c6950f09 |
| Delegated to: | Paul Mackerras |
| Headers | show |
Index: b/arch/powerpc/mm/fault.c =================================================================== --- a/arch/powerpc/mm/fault.c +++ b/arch/powerpc/mm/fault.c @@ -324,7 +324,7 @@ good_area: #ifdef CONFIG_PPC_SMLPAR if (firmware_has_feature(FW_FEATURE_CMO)) { preempt_disable(); - get_lppaca()->page_ins++; + get_lppaca()->page_ins += (1 << PAGE_FACTOR); preempt_enable(); } #endif
Linux will report the number of page-ins so that the hypervisor can better determine partition memory pressure. The hardware page size and the OS page size can be different. In the case where the hardware page size is 4k and the OS is running with 64k pages the prior patch would under-report the number of pages. This patch uses PAGE_FACTOR to correct the reporting to the hypervisor. Reported-by: Andrew Theurer <habanero@linux.vnet.ibm.com> Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com> --- arch/powerpc/mm/fault.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)