Commit 38c6663a authored by Len Brown's avatar Len Brown
Browse files

tools/power turbostat: elevate priority of interval mode 



This makes interval mode less likely to see delayed
results on a heavily loaded system.

Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 1b439f01

tools/power/x86/turbostat/turbostat.c

+57 −9
Original line number Diff line number Diff line
@@ -2266,31 +2266,48 @@ char *pkg_cstate_limit_strings[] = { "reserved", "unknown", "pc0", "pc1", "pc2", 


int nhm_pkg_cstate_limits[16] =

    { PCL__0, PCL__1, PCL__3, PCL__6, PCL__7, PCLRSV, PCLRSV, PCLUNL, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV,

PCLRSV, PCLRSV };

	PCLRSV, PCLRSV

};



int snb_pkg_cstate_limits[16] =

    { PCL__0, PCL__2, PCL_6N, PCL_6R, PCL__7, PCL_7S, PCLRSV, PCLUNL, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV,

PCLRSV, PCLRSV };

	PCLRSV, PCLRSV

};



int hsw_pkg_cstate_limits[16] =

    { PCL__0, PCL__2, PCL__3, PCL__6, PCL__7, PCL_7S, PCL__8, PCL__9, PCLUNL, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV,

PCLRSV, PCLRSV };

	PCLRSV, PCLRSV

};



int slv_pkg_cstate_limits[16] =

    { PCL__0, PCL__1, PCLRSV, PCLRSV, PCL__4, PCLRSV, PCL__6, PCL__7, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV,

PCL__6, PCL__7 };

	PCL__6, PCL__7

};



int amt_pkg_cstate_limits[16] =

    { PCLUNL, PCL__1, PCL__2, PCLRSV, PCLRSV, PCLRSV, PCL__6, PCL__7, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV,

PCLRSV, PCLRSV };

	PCLRSV, PCLRSV

};



int phi_pkg_cstate_limits[16] =

    { PCL__0, PCL__2, PCL_6N, PCL_6R, PCLRSV, PCLRSV, PCLRSV, PCLUNL, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV,

PCLRSV, PCLRSV };

	PCLRSV, PCLRSV

};



int glm_pkg_cstate_limits[16] =

    { PCLUNL, PCL__1, PCL__3, PCL__6, PCL__7, PCL_7S, PCL__8, PCL__9, PCL_10, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV,

PCLRSV, PCLRSV };

	PCLRSV, PCLRSV

};



int skx_pkg_cstate_limits[16] =

    { PCL__0, PCL__2, PCL_6N, PCL_6R, PCLRSV, PCLRSV, PCLRSV, PCLUNL, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV,

PCLRSV, PCLRSV };

	PCLRSV, PCLRSV

};



int icx_pkg_cstate_limits[16] =

    { PCL__0, PCL__2, PCL__6, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLUNL, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV,

PCLRSV, PCLRSV };

	PCLRSV, PCLRSV

};



static void calculate_tsc_tweak()

{
@@ -3401,6 +3418,32 @@ void msr_sum_record(void) 
	free(per_cpu_msr_sum);

}



/*

 * set_my_sched_priority(pri)

 * return previous

 */

int set_my_sched_priority(int priority)

{

	int retval;

	int original_priority;



	errno = 0;

	original_priority = getpriority(PRIO_PROCESS, 0);

	if (errno && (original_priority == -1))

		err(errno, "getpriority");



	retval = setpriority(PRIO_PROCESS, 0, priority);

	if (retval)

		err(retval, "setpriority(%d)", priority);



	errno = 0;

	retval = getpriority(PRIO_PROCESS, 0);

	if (retval != priority)

		err(-1, "getpriority(%d) != setpriority(%d)", retval, priority);



	return original_priority;

}



void turbostat_loop()

{

	int retval;
@@ -3409,6 +3452,11 @@ void turbostat_loop() 


	setup_signal_handler();



	/*

	 * elevate own priority for interval mode

	 */

	set_my_sched_priority(-20);



restart:

	restarted++;