Josh suggested moving the _ONCE logic inside the trap handler, using a bit in the bug_entry::flags field, avoiding the need for the extra variable. Sadly this only works for WARN_ON_ONCE(), since the others have printk() statements prior to triggering the trap. Still, this saves a fair amount of text and some data: text data filename 10682460 4530992 defconfig-build/vmlinux.orig 10665111 4530096 defconfig-build/vmlinux.patched Suggested-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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.. | ||
asm | ||
cpu-common/cpu | ||
cpu-sh2/cpu | ||
cpu-sh2a/cpu | ||
cpu-sh3/cpu | ||
cpu-sh4/cpu | ||
cpu-sh4a/cpu | ||
cpu-sh5/cpu | ||
mach-common/mach | ||
mach-dreamcast/mach | ||
mach-ecovec24/mach | ||
mach-kfr2r09/mach | ||
mach-landisk/mach | ||
mach-migor/mach | ||
mach-sdk7786/mach | ||
mach-se/mach | ||
mach-sh03/mach | ||
mach-x3proto/mach | ||
uapi/asm |