Commit 366fb13b authored by Nathan Lynch's avatar Nathan Lynch Committed by Michael Ellerman
Browse files

powerpc/pseries/hibernation: switch to rtas_ibm_suspend_me() 



rtas_suspend_last_cpu() and related code perform a lot of work that
isn't relevant to the hibernation workflow. All other CPUs are offline
when called so there is no need to place them in H_JOIN or prod them
on resume, nor is there need for retries or operations on shared
state.

Call the rtas_ibm_suspend_me() wrapper function directly from
pseries_suspend_enter() instead of using rtas_suspend_last_cpu().

Signed-off-by: default avatarNathan Lynch <nathanl@linux.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201207215200.1785968-23-nathanl@linux.ibm.com
parent 395b2c09

arch/powerpc/platforms/pseries/suspend.c

+1 −5
Original line number Diff line number Diff line
@@ -76,11 +76,7 @@ static void pseries_suspend_enable_irqs(void) 
 **/

static int pseries_suspend_enter(suspend_state_t state)

{

	int rc = rtas_suspend_last_cpu(&suspend_data);



	atomic_set(&suspending, 0);

	atomic_set(&suspend_data.done, 1);

	return rc;

	return rtas_ibm_suspend_me(NULL);

}



/**