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Commit 9e250225 authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

rcutorture: Abstract torture_param() 



Create a torture_param() macro and apply it to rcutorture in order to
save a few lines of code.  This same macro may be applied to other
torture frameworks.

Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
parent daeda23d

include/linux/torture.h

+7 −2
Original line number Diff line number Diff line
@@ -35,13 +35,18 @@ 
#include <linux/bug.h>

#include <linux/compiler.h>



/* Definitions for a non-string torture-test module parameter. */

#define torture_param(type, name, init, msg) \

	static type name = init; \

	module_param(name, type, 0444); \

	MODULE_PARM_DESC(name, msg);



/* Low-rider random number generator. */

struct torture_random_state {

	unsigned long trs_state;

	long trs_count;

};



#define DEFINE_TORTURE_RANDOM(name) struct torture_random_state name = { 0, 0 }



unsigned long torture_random(struct torture_random_state *trsp);



#endif /* __LINUX_TORTURE_H */

kernel/rcu/rcutorture.c

+34 −69
Original line number Diff line number Diff line
@@ -59,78 +59,43 @@ MODULE_ALIAS("rcutorture"); 
#endif

#define MODULE_PARAM_PREFIX "rcutorture."



static int fqs_duration;

module_param(fqs_duration, int, 0444);

MODULE_PARM_DESC(fqs_duration, "Duration of fqs bursts (us), 0 to disable");

static int fqs_holdoff;

module_param(fqs_holdoff, int, 0444);

MODULE_PARM_DESC(fqs_holdoff, "Holdoff time within fqs bursts (us)");

static int fqs_stutter = 3;

module_param(fqs_stutter, int, 0444);

MODULE_PARM_DESC(fqs_stutter, "Wait time between fqs bursts (s)");

static bool gp_exp;

module_param(gp_exp, bool, 0444);

MODULE_PARM_DESC(gp_exp, "Use expedited GP wait primitives");

static bool gp_normal;

module_param(gp_normal, bool, 0444);

MODULE_PARM_DESC(gp_normal, "Use normal (non-expedited) GP wait primitives");

static int irqreader = 1;

module_param(irqreader, int, 0444);

MODULE_PARM_DESC(irqreader, "Allow RCU readers from irq handlers");

static int n_barrier_cbs;

module_param(n_barrier_cbs, int, 0444);

MODULE_PARM_DESC(n_barrier_cbs, "# of callbacks/kthreads for barrier testing");

static int nfakewriters = 4;

module_param(nfakewriters, int, 0444);

MODULE_PARM_DESC(nfakewriters, "Number of RCU fake writer threads");

static int nreaders = -1;

module_param(nreaders, int, 0444);

MODULE_PARM_DESC(nreaders, "Number of RCU reader threads");

static int object_debug;

module_param(object_debug, int, 0444);

MODULE_PARM_DESC(object_debug, "Enable debug-object double call_rcu() testing");

static int onoff_holdoff;

module_param(onoff_holdoff, int, 0444);

MODULE_PARM_DESC(onoff_holdoff, "Time after boot before CPU hotplugs (s)");

static int onoff_interval;

module_param(onoff_interval, int, 0444);

MODULE_PARM_DESC(onoff_interval, "Time between CPU hotplugs (s), 0=disable");

static int shuffle_interval = 3;

module_param(shuffle_interval, int, 0444);

MODULE_PARM_DESC(shuffle_interval, "Number of seconds between shuffles");

static int shutdown_secs;

module_param(shutdown_secs, int, 0444);

MODULE_PARM_DESC(shutdown_secs, "Shutdown time (s), <= zero to disable.");

static int stall_cpu;

module_param(stall_cpu, int, 0444);

MODULE_PARM_DESC(stall_cpu, "Stall duration (s), zero to disable.");

static int stall_cpu_holdoff = 10;

module_param(stall_cpu_holdoff, int, 0444);

MODULE_PARM_DESC(stall_cpu_holdoff, "Time to wait before starting stall (s).");

static int stat_interval = 60;

module_param(stat_interval, int, 0644);

MODULE_PARM_DESC(stat_interval, "Number of seconds between stats printk()s");

static int stutter = 5;

module_param(stutter, int, 0444);

MODULE_PARM_DESC(stutter, "Number of seconds to run/halt test");

static int test_boost = 1;

module_param(test_boost, int, 0444);

MODULE_PARM_DESC(test_boost, "Test RCU prio boost: 0=no, 1=maybe, 2=yes.");

static int test_boost_duration = 4;

module_param(test_boost_duration, int, 0444);

MODULE_PARM_DESC(test_boost_duration, "Duration of each boost test, seconds.");

static int test_boost_interval = 7;

module_param(test_boost_interval, int, 0444);

MODULE_PARM_DESC(test_boost_interval, "Interval between boost tests, seconds.");

static bool test_no_idle_hz = true;

module_param(test_no_idle_hz, bool, 0444);

MODULE_PARM_DESC(test_no_idle_hz, "Test support for tickless idle CPUs");

torture_param(int, fqs_duration, 0,

	      "Duration of fqs bursts (us), 0 to disable");

torture_param(int, fqs_holdoff, 0, "Holdoff time within fqs bursts (us)");

torture_param(int, fqs_stutter, 3, "Wait time between fqs bursts (s)");

torture_param(bool, gp_exp, false, "Use expedited GP wait primitives");

torture_param(bool, gp_normal, false,

	     "Use normal (non-expedited) GP wait primitives");

torture_param(int, irqreader, 1, "Allow RCU readers from irq handlers");

torture_param(int, n_barrier_cbs, 0,

	     "# of callbacks/kthreads for barrier testing");

torture_param(int, nfakewriters, 4, "Number of RCU fake writer threads");

torture_param(int, nreaders, -1, "Number of RCU reader threads");

torture_param(int, object_debug, 0,

	     "Enable debug-object double call_rcu() testing");

torture_param(int, onoff_holdoff, 0, "Time after boot before CPU hotplugs (s)");

torture_param(int, onoff_interval, 0,

	     "Time between CPU hotplugs (s), 0=disable");

torture_param(int, shuffle_interval, 3, "Number of seconds between shuffles");

torture_param(int, shutdown_secs, 0, "Shutdown time (s), <= zero to disable.");

torture_param(int, stall_cpu, 0, "Stall duration (s), zero to disable.");

torture_param(int, stall_cpu_holdoff, 10,

	     "Time to wait before starting stall (s).");

torture_param(int, stat_interval, 60,

	     "Number of seconds between stats printk()s");

torture_param(int, stutter, 5, "Number of seconds to run/halt test");

torture_param(int, test_boost, 1, "Test RCU prio boost: 0=no, 1=maybe, 2=yes.");

torture_param(int, test_boost_duration, 4,

	     "Duration of each boost test, seconds.");

torture_param(int, test_boost_interval, 7,

	     "Interval between boost tests, seconds.");

torture_param(bool, test_no_idle_hz, true,

	     "Test support for tickless idle CPUs");

torture_param(bool, verbose, false, "Enable verbose debugging printk()s");



static char *torture_type = "rcu";

module_param(torture_type, charp, 0444);

MODULE_PARM_DESC(torture_type, "Type of RCU to torture (rcu, rcu_bh, ...)");

static bool verbose;

module_param(verbose, bool, 0444);

MODULE_PARM_DESC(verbose, "Enable verbose debugging printk()s");



#define TORTURE_FLAG "-torture:"

#define PRINTK_STRING(s) \