From: Sergey Senozhatsky <senozhatsky@chromium.org>
To: Andrew Morton <akpm@linux-foundation.org>,
Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Sergey Senozhatsky <senozhatsky@chromium.org>
Subject: [PATCHv3 9/9] zsmalloc: break out of loop when found perfect zspage order
Date: Thu, 27 Oct 2022 13:26:51 +0900 [thread overview]
Message-ID: <20221027042651.234524-10-senozhatsky@chromium.org> (raw)
In-Reply-To: <20221027042651.234524-1-senozhatsky@chromium.org>
If we found zspage configuration that gives us perfect
100% used percentage (zero wasted space) then there is
no point it trying any other configuration
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
---
mm/zsmalloc.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 7465a45495bf..0bc9ed1f1a5d 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -787,6 +787,9 @@ static int get_pages_per_zspage(u32 class_size, u32 max_pages_per_zspage)
max_usedpc = usedpc;
max_usedpc_order = i;
}
+
+ if (usedpc == 100)
+ break;
}
return max_usedpc_order;
--
2.38.0.135.g90850a2211-goog
prev parent reply other threads:[~2022-10-27 4:27 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-27 4:26 [PATCHv3 0/9] zsmalloc/zram: configurable zspage size Sergey Senozhatsky
2022-10-27 4:26 ` [PATCHv3 1/9] zram: add size class equals check into recompression Sergey Senozhatsky
2022-10-27 4:26 ` [PATCHv3 2/9] zsmalloc: turn zspage order into runtime variable Sergey Senozhatsky
2022-10-27 4:26 ` [PATCHv3 3/9] zsmalloc: move away from page order defines Sergey Senozhatsky
2022-10-27 4:26 ` [PATCHv3 4/9] zsmalloc: make huge class watermark zs_pool member Sergey Senozhatsky
2022-10-27 4:26 ` [PATCHv3 5/9] zram: huge size watermark cannot be global Sergey Senozhatsky
2022-10-27 4:26 ` [PATCHv3 6/9] zsmalloc: pass limit on pages per-zspage to zs_create_pool() Sergey Senozhatsky
2022-10-27 4:26 ` [PATCHv3 7/9] zram: add pages_per_pool_page device attribute Sergey Senozhatsky
2022-10-27 4:26 ` [PATCHv3 8/9] Documentation: document zram pages_per_pool_page attribute Sergey Senozhatsky
2022-10-27 4:26 ` Sergey Senozhatsky [this message]
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