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authorDenys Vlasenko <[email protected]>2015-08-04 16:15:14 +0200
committerIngo Molnar <[email protected]>2015-08-05 09:38:08 +0200
commit1a1d48a4a8fde49aedc045d894efe67173d59fe0 (patch)
treeb1e4dc0bd4c7621c98610947d3baa417d73ae6ef /scripts/gdb/linux/modules.py
parentc2f3ba745d1c2013811cac6308c4abf9527c478e (diff)
linux/bitmap: Force inlining of bitmap weight functions
With this config: http://busybox.net/~vda/kernel_config_OPTIMIZE_INLINING_and_Os gcc-4.7.2 generates many copies of these tiny functions: bitmap_weight (55 copies): 55 push %rbp 48 89 e5 mov %rsp,%rbp e8 3f 3a 8b 00 callq __bitmap_weight 5d pop %rbp c3 retq hweight_long (23 copies): 55 push %rbp e8 b5 65 8e 00 callq __sw_hweight64 48 89 e5 mov %rsp,%rbp 5d pop %rbp c3 retq See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66122 This patch fixes this via s/inline/__always_inline/ While at it, replaced two "__inline__" with usual "inline" (the rest of the source file uses the latter). text data bss dec filename 86971357 17195880 36659200 140826437 vmlinux.before 86971120 17195912 36659200 140826232 vmlinux Signed-off-by: Denys Vlasenko <[email protected]> Cc: Andrew Morton <[email protected]> Cc: David Rientjes <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Thomas Graf <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]>
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