Messages in this thread Patch in this message | | | Date | Wed, 27 Jan 2016 15:37:38 +0800 | Subject | How you tested this patch(8c7f010) | From | Zhizhou Tian <> |
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hi, Karam: I back ported "zram: implement rw_page operation of zram"(8c7f010) to linux3.10 on Spreadtrum tshark board. I test this patch with following code: mm/page_io.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/mm/page_io.c b/mm/page_io.c index 4e1c1c8..1556fc4 100644 --- a/mm/page_io.c +++ b/mm/page_io.c @@ -232,6 +232,7 @@ bad_bmap: int swap_writepage(struct page *page, struct writeback_control *wbc) { int ret = 0; + ktime_t stime, etime;
if (try_to_free_swap(page)) { unlock_page(page); @@ -243,7 +244,12 @@ int swap_writepage(struct page *page, struct writeback_control *wbc) end_page_writeback(page); goto out; } + stime = ktime_get(); ret = __swap_writepage(page, wbc, end_swap_bio_write); + etime = ktime_get(); + + pr_err("zhizhou.tian: execute swap time with page_io : %lld nsec.\n", + etime.tv64 - stime.tv64); out: return ret; } But I am not sure the result means something. Can you share your method? thanks;)
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