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| author | Josh Poimboeuf <jpoimboe@redhat.com> | 2018-11-01 05:57:30 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-11-01 11:55:38 +0300 |
| commit | bcb6fb5da77c2a228adf07cc9cb1a0c2aa2001c6 (patch) | |
| tree | c7e4dc982c044c5758ec2e2f25ade68fb64e9d67 /arch/x86/mm/pageattr.c | |
| parent | 5b7449810ae6d652629c550d3974c8453836d229 (diff) | |
| download | linux-bcb6fb5da77c2a228adf07cc9cb1a0c2aa2001c6.tar.xz | |
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/x86/mm/pageattr.c')
0 files changed, 0 insertions, 0 deletions