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author | Peter Zijlstra <peterz@infradead.org> | 2017-05-31 17:11:49 +0200 |
---|---|---|
committer | Ingo Molnar <mingo@kernel.org> | 2017-06-08 10:35:50 +0200 |
commit | 018956d6419be3e5ff5aacc60b2a3cff585adee1 (patch) | |
tree | 6ecde8e95a6fc80d93933ab0e4d8c8463ea3b1ce /lib | |
parent | cfb6133399a490419cda55fcdcf9dbbca65eacba (diff) | |
download | linux-018956d6419be3e5ff5aacc60b2a3cff585adee1.tar.gz linux-018956d6419be3e5ff5aacc60b2a3cff585adee1.tar.bz2 linux-018956d6419be3e5ff5aacc60b2a3cff585adee1.zip |
locking/selftest: Add RT-mutex support
Now that RT-mutex has lockdep annotations, add them to the selftest.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'lib')
-rw-r--r-- | lib/locking-selftest-rtmutex.h | 11 | ||||
-rw-r--r-- | lib/locking-selftest.c | 106 |
2 files changed, 117 insertions, 0 deletions
diff --git a/lib/locking-selftest-rtmutex.h b/lib/locking-selftest-rtmutex.h new file mode 100644 index 000000000000..e3cb83989d16 --- /dev/null +++ b/lib/locking-selftest-rtmutex.h @@ -0,0 +1,11 @@ +#undef LOCK +#define LOCK RTL + +#undef UNLOCK +#define UNLOCK RTU + +#undef RLOCK +#undef WLOCK + +#undef INIT +#define INIT RTI diff --git a/lib/locking-selftest.c b/lib/locking-selftest.c index dd09e517c492..6f2b135dc5e8 100644 --- a/lib/locking-selftest.c +++ b/lib/locking-selftest.c @@ -21,6 +21,7 @@ #include <linux/interrupt.h> #include <linux/debug_locks.h> #include <linux/irqflags.h> +#include <linux/rtmutex.h> /* * Change this to 1 if you want to see the failure printouts: @@ -46,6 +47,7 @@ __setup("debug_locks_verbose=", setup_debug_locks_verbose); #define LOCKTYPE_MUTEX 0x4 #define LOCKTYPE_RWSEM 0x8 #define LOCKTYPE_WW 0x10 +#define LOCKTYPE_RTMUTEX 0x20 static struct ww_acquire_ctx t, t2; static struct ww_mutex o, o2, o3; @@ -74,6 +76,15 @@ static DECLARE_RWSEM(rwsem_B); static DECLARE_RWSEM(rwsem_C); static DECLARE_RWSEM(rwsem_D); +#ifdef CONFIG_RT_MUTEXES + +static DEFINE_RT_MUTEX(rtmutex_A); +static DEFINE_RT_MUTEX(rtmutex_B); +static DEFINE_RT_MUTEX(rtmutex_C); +static DEFINE_RT_MUTEX(rtmutex_D); + +#endif + /* * Locks that we initialize dynamically as well so that * e.g. X1 and X2 becomes two instances of the same class, @@ -108,6 +119,17 @@ static DECLARE_RWSEM(rwsem_Y2); static DECLARE_RWSEM(rwsem_Z1); static DECLARE_RWSEM(rwsem_Z2); +#ifdef CONFIG_RT_MUTEXES + +static DEFINE_RT_MUTEX(rtmutex_X1); +static DEFINE_RT_MUTEX(rtmutex_X2); +static DEFINE_RT_MUTEX(rtmutex_Y1); +static DEFINE_RT_MUTEX(rtmutex_Y2); +static DEFINE_RT_MUTEX(rtmutex_Z1); +static DEFINE_RT_MUTEX(rtmutex_Z2); + +#endif + /* * non-inlined runtime initializers, to let separate locks share * the same lock-class: @@ -129,6 +151,17 @@ INIT_CLASS_FUNC(Z) static void init_shared_classes(void) { +#ifdef CONFIG_RT_MUTEXES + static struct lock_class_key rt_X, rt_Y, rt_Z; + + __rt_mutex_init(&rtmutex_X1, __func__, &rt_X); + __rt_mutex_init(&rtmutex_X2, __func__, &rt_X); + __rt_mutex_init(&rtmutex_Y1, __func__, &rt_Y); + __rt_mutex_init(&rtmutex_Y2, __func__, &rt_Y); + __rt_mutex_init(&rtmutex_Z1, __func__, &rt_Z); + __rt_mutex_init(&rtmutex_Z2, __func__, &rt_Z); +#endif + init_class_X(&lock_X1, &rwlock_X1, &mutex_X1, &rwsem_X1); init_class_X(&lock_X2, &rwlock_X2, &mutex_X2, &rwsem_X2); @@ -193,6 +226,10 @@ static void init_shared_classes(void) #define MU(x) mutex_unlock(&mutex_##x) #define MI(x) mutex_init(&mutex_##x) +#define RTL(x) rt_mutex_lock(&rtmutex_##x) +#define RTU(x) rt_mutex_unlock(&rtmutex_##x) +#define RTI(x) rt_mutex_init(&rtmutex_##x) + #define WSL(x) down_write(&rwsem_##x) #define WSU(x) up_write(&rwsem_##x) @@ -264,6 +301,11 @@ GENERATE_TESTCASE(AA_wsem) #include "locking-selftest-rsem.h" GENERATE_TESTCASE(AA_rsem) +#ifdef CONFIG_RT_MUTEXES +#include "locking-selftest-rtmutex.h" +GENERATE_TESTCASE(AA_rtmutex); +#endif + #undef E /* @@ -345,6 +387,11 @@ GENERATE_TESTCASE(ABBA_wsem) #include "locking-selftest-rsem.h" GENERATE_TESTCASE(ABBA_rsem) +#ifdef CONFIG_RT_MUTEXES +#include "locking-selftest-rtmutex.h" +GENERATE_TESTCASE(ABBA_rtmutex); +#endif + #undef E /* @@ -373,6 +420,11 @@ GENERATE_TESTCASE(ABBCCA_wsem) #include "locking-selftest-rsem.h" GENERATE_TESTCASE(ABBCCA_rsem) +#ifdef CONFIG_RT_MUTEXES +#include "locking-selftest-rtmutex.h" +GENERATE_TESTCASE(ABBCCA_rtmutex); +#endif + #undef E /* @@ -401,6 +453,11 @@ GENERATE_TESTCASE(ABCABC_wsem) #include "locking-selftest-rsem.h" GENERATE_TESTCASE(ABCABC_rsem) +#ifdef CONFIG_RT_MUTEXES +#include "locking-selftest-rtmutex.h" +GENERATE_TESTCASE(ABCABC_rtmutex); +#endif + #undef E /* @@ -430,6 +487,11 @@ GENERATE_TESTCASE(ABBCCDDA_wsem) #include "locking-selftest-rsem.h" GENERATE_TESTCASE(ABBCCDDA_rsem) +#ifdef CONFIG_RT_MUTEXES +#include "locking-selftest-rtmutex.h" +GENERATE_TESTCASE(ABBCCDDA_rtmutex); +#endif + #undef E /* @@ -458,6 +520,11 @@ GENERATE_TESTCASE(ABCDBDDA_wsem) #include "locking-selftest-rsem.h" GENERATE_TESTCASE(ABCDBDDA_rsem) +#ifdef CONFIG_RT_MUTEXES +#include "locking-selftest-rtmutex.h" +GENERATE_TESTCASE(ABCDBDDA_rtmutex); +#endif + #undef E /* @@ -486,6 +553,11 @@ GENERATE_TESTCASE(ABCDBCDA_wsem) #include "locking-selftest-rsem.h" GENERATE_TESTCASE(ABCDBCDA_rsem) +#ifdef CONFIG_RT_MUTEXES +#include "locking-selftest-rtmutex.h" +GENERATE_TESTCASE(ABCDBCDA_rtmutex); +#endif + #undef E /* @@ -513,6 +585,11 @@ GENERATE_TESTCASE(double_unlock_wsem) #include "locking-selftest-rsem.h" GENERATE_TESTCASE(double_unlock_rsem) +#ifdef CONFIG_RT_MUTEXES +#include "locking-selftest-rtmutex.h" +GENERATE_TESTCASE(double_unlock_rtmutex); +#endif + #undef E /* @@ -539,6 +616,11 @@ GENERATE_TESTCASE(init_held_wsem) #include "locking-selftest-rsem.h" GENERATE_TESTCASE(init_held_rsem) +#ifdef CONFIG_RT_MUTEXES +#include "locking-selftest-rtmutex.h" +GENERATE_TESTCASE(init_held_rtmutex); +#endif + #undef E /* @@ -888,6 +970,9 @@ GENERATE_PERMUTATIONS_3_EVENTS(irq_read_recursion_soft) # define I_MUTEX(x) lockdep_reset_lock(&mutex_##x.dep_map) # define I_RWSEM(x) lockdep_reset_lock(&rwsem_##x.dep_map) # define I_WW(x) lockdep_reset_lock(&x.dep_map) +#ifdef CONFIG_RT_MUTEXES +# define I_RTMUTEX(x) lockdep_reset_lock(&rtmutex_##x.dep_map) +#endif #else # define I_SPINLOCK(x) # define I_RWLOCK(x) @@ -896,12 +981,23 @@ GENERATE_PERMUTATIONS_3_EVENTS(irq_read_recursion_soft) # define I_WW(x) #endif +#ifndef I_RTMUTEX +# define I_RTMUTEX(x) +#endif + +#ifdef CONFIG_RT_MUTEXES +#define I2_RTMUTEX(x) rt_mutex_init(&rtmutex_##x) +#else +#define I2_RTMUTEX(x) +#endif + #define I1(x) \ do { \ I_SPINLOCK(x); \ I_RWLOCK(x); \ I_MUTEX(x); \ I_RWSEM(x); \ + I_RTMUTEX(x); \ } while (0) #define I2(x) \ @@ -910,6 +1006,7 @@ GENERATE_PERMUTATIONS_3_EVENTS(irq_read_recursion_soft) rwlock_init(&rwlock_##x); \ mutex_init(&mutex_##x); \ init_rwsem(&rwsem_##x); \ + I2_RTMUTEX(x); \ } while (0) static void reset_locks(void) @@ -985,6 +1082,12 @@ static void dotest(void (*testcase_fn)(void), int expected, int lockclass_mask) reset_locks(); } +#ifdef CONFIG_RT_MUTEXES +#define dotest_rt(fn, e, m) dotest((fn), (e), (m)) +#else +#define dotest_rt(fn, e, m) +#endif + static inline void print_testname(const char *testname) { printk("%33s:", testname); @@ -1022,6 +1125,7 @@ static inline void print_testname(const char *testname) dotest(name##_mutex, FAILURE, LOCKTYPE_MUTEX); \ dotest(name##_wsem, FAILURE, LOCKTYPE_RWSEM); \ dotest(name##_rsem, FAILURE, LOCKTYPE_RWSEM); \ + dotest_rt(name##_rtmutex, FAILURE, LOCKTYPE_RTMUTEX); \ pr_cont("\n"); #define DO_TESTCASE_6_SUCCESS(desc, name) \ @@ -1032,6 +1136,7 @@ static inline void print_testname(const char *testname) dotest(name##_mutex, SUCCESS, LOCKTYPE_MUTEX); \ dotest(name##_wsem, SUCCESS, LOCKTYPE_RWSEM); \ dotest(name##_rsem, SUCCESS, LOCKTYPE_RWSEM); \ + dotest_rt(name##_rtmutex, SUCCESS, LOCKTYPE_RTMUTEX); \ pr_cont("\n"); /* @@ -1045,6 +1150,7 @@ static inline void print_testname(const char *testname) dotest(name##_mutex, FAILURE, LOCKTYPE_MUTEX); \ dotest(name##_wsem, FAILURE, LOCKTYPE_RWSEM); \ dotest(name##_rsem, FAILURE, LOCKTYPE_RWSEM); \ + dotest_rt(name##_rtmutex, FAILURE, LOCKTYPE_RTMUTEX); \ pr_cont("\n"); #define DO_TESTCASE_2I(desc, name, nr) \ |