cpuidle, mwait: Make the mwait code noinstr clean

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objtool found a few cases where this code called out into instrumented
code:

  vmlinux.o: warning: objtool: intel_idle_s2idle+0x6e: call to __monitor.constprop.0() leaves .noinstr.text section
  vmlinux.o: warning: objtool: intel_idle_irq+0x8c: call to __monitor.constprop.0() leaves .noinstr.text section
  vmlinux.o: warning: objtool: intel_idle+0x73: call to __monitor.constprop.0() leaves .noinstr.text section

  vmlinux.o: warning: objtool: mwait_idle+0x88: call to clflush() leaves .noinstr.text section

Fix it by marking the affected methods as __always_inline.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Tony Lindgren <tony@atomide.com>
Tested-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Frederic Weisbecker <frederic@kernel.org>
Link: https://lore.kernel.org/r/20230112195541.050542952@infradead.org

...

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Peter Zijlstra 2023-01-12 20:43:42 +01:00 • committed by Ingo Molnar

parent e4df1511e1

commit 2ec8efe64e

2 changed files with 7 additions and 7 deletions

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12

arch/x86/include/asm/mwait.h

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2

arch/x86/include/asm/special_insns.h

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