x86/entry/32: Clean up return from interrupt preemption path

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The code flow around the return from interrupt preemption point seems
needlessly complicated.

There is only one site jumping to resume_kernel, and none (outside of
resume_kernel) jumping to restore_all_kernel. Inline resume_kernel
in restore_all_kernel and avoid the CONFIG_PREEMPT dependent label.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.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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Peter Zijlstra 2019-05-07 23:25:54 +02:00 • committed by Ingo Molnar

parent c21ac93288

commit 5e1246ff2d

1 changed files with 10 additions and 14 deletions

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arch/x86/entry/entry_32.S

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