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From: kernel test robot <lkp@intel.com>
To: Sultan Alsawaf <sultan@kerneltoast.com>,
	Jan Alexander Steffens (heftig) <heftig@archlinux.org>
Cc: oe-kbuild-all@lists.linux.dev, lkp@intel.com,
	Josh Triplett <josh@joshtriplett.org>
Subject: [lkp] [+182 bytes kernel size regression] [i386-tinyconfig] [873f6a705c] ZEN: mm: Stop kswapd early when nothing's waiting for it to free pages
Date: Tue, 29 Aug 2023 13:46:18 +0800	[thread overview]
Message-ID: <20230829054618.FJfix%lkp@intel.com> (raw)


FYI, we noticed a +182 bytes kernel size regression due to commit:

commit: 873f6a705cfc89dd35a84c22023d4188362ba74a (ZEN: mm: Stop kswapd early when nothing's waiting for it to free pages)
https://github.com/zen-kernel/zen-kernel 6.5/zen-sauce


Details as below (size data is obtained by `nm --size-sort vmlinux`):

c42a5c8a: ZEN: Set default max map count to (INT_MAX - 5)
873f6a70: ZEN: mm: Stop kswapd early when nothing's waiting for it to free pages

+------------------------------+----------+----------+-------+
|            symbol            | c42a5c8a | 873f6a70 | delta |
+------------------------------+----------+----------+-------+
| bzImage                      | 516432   | 516624   | 192   |
| nm.t.__alloc_pages_slowpath  | 1413     | 1514     | 101   |
| nm.t.throttle_direct_reclaim | 361      | 409      | 48    |
| nm.t.balance_pgdat           | 656      | 671      | 15    |
| nm.t.allow_direct_reclaim    | 130      | 144      | 14    |
| nm.B.kswapd_waiters          | 0        | 4        | 4     |
+------------------------------+----------+----------+-------+



Thanks


                 reply	other threads:[~2023-08-29  5:46 UTC|newest]

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