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Shrikanth Hegde
0fd96b7ba2
commit64ed1e3e72upstream. snooze_loop is done often in any system which has fair bit of idle time. So it qualifies for even micro-optimizations. When breaking the snooze due to timeout, TIF_POLLING_NRFLAG is cleared twice. Clearing the bit invokes atomics. Avoid double clear and thereby avoid one atomic write. dev->poll_time_limit indicates whether the loop was broken due to timeout. Use that instead of defining a new variable. Fixes:7ded429152("cpuidle: powerpc: no memory barrier after break from idle") Cc: stable@vger.kernel.org Reviewed-by: Mukesh Kumar Chaurasiya (IBM) <mkchauras@gmail.com> Signed-off-by: Shrikanth Hegde <sshegde@linux.ibm.com> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/20260311061709.1230440-1-sshegde@linux.ibm.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>