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authorJosh Poimboeuf <jpoimboe@redhat.com>2018-10-31 21:57:30 -0500
committerThomas Gleixner <tglx@linutronix.de>2018-11-01 09:55:38 +0100
commitbcb6fb5da77c2a228adf07cc9cb1a0c2aa2001c6 (patch)
treec7e4dc982c044c5758ec2e2f25ade68fb64e9d67 /arch
parent5b7449810ae6d652629c550d3974c8453836d229 (diff)
downloadlinux-bcb6fb5da77c2a228adf07cc9cb1a0c2aa2001c6.tar.bz2
objtool: Support GCC 9 cold subfunction naming scheme
Starting with GCC 8, a lot of unlikely code was moved out of line to "cold" subfunctions in .text.unlikely. For example, the unlikely bits of: irq_do_set_affinity() are moved out to the following subfunction: irq_do_set_affinity.cold.49() Starting with GCC 9, the numbered suffix has been removed. So in the above example, the cold subfunction is instead: irq_do_set_affinity.cold() Tweak the objtool subfunction detection logic so that it detects both GCC 8 and GCC 9 naming schemes. Reported-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/015e9544b1f188d36a7f02fa31e9e95629aa5f50.1541040800.git.jpoimboe@redhat.com
Diffstat (limited to 'arch')
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