ARM: 8018/1: Add {inc,dec}_preempt_count asm macros
The patch adds asm macros for inc_preempt_count and dec_preempt_count_ti (which also gets the current thread_info) instead of open-coding them in arch/arm/vfp/*.S files. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Tested-by: NArun KS <getarunks@gmail.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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