/*
- * Copyright (c) 2006-2011 Apple Inc. All rights reserved.
+ * Copyright (c) 2006-2014 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#include <kern/zalloc.h>
#include <kern/cpu_number.h>
#include <kern/locks.h>
+#include <kern/thread_call.h>
#include <libkern/libkern.h>
#include <libkern/OSAtomic.h>
/* Allocate extra in case we need to manually align the pointer */
#define MCACHE_ALLOC_SIZE \
- (sizeof (void *) + MCACHE_SIZE(ncpu) + CPU_CACHE_SIZE)
+ (sizeof (void *) + MCACHE_SIZE(ncpu) + CPU_CACHE_LINE_SIZE)
#define MCACHE_CPU(c) \
(mcache_cpu_t *)((void *)((char *)(c) + MCACHE_SIZE(cpu_number())))
#define MCACHE_LOCK_TRY(l) lck_mtx_try_lock(l)
static int ncpu;
+static unsigned int cache_line_size;
static lck_mtx_t *mcache_llock;
static struct thread *mcache_llock_owner;
static lck_attr_t *mcache_llock_attr;
static lck_grp_t *mcache_llock_grp;
static lck_grp_attr_t *mcache_llock_grp_attr;
static struct zone *mcache_zone;
-static unsigned int mcache_reap_interval;
+static const uint32_t mcache_reap_interval = 15;
+static const uint32_t mcache_reap_interval_leeway = 2;
static UInt32 mcache_reaping;
static int mcache_ready;
static int mcache_updating;
static unsigned int mcache_flags = 0;
#endif
+int mca_trn_max = MCA_TRN_MAX;
+
#define DUMP_MCA_BUF_SIZE 512
static char *mca_dump_buf;
static void mcache_cache_update(mcache_t *);
static void mcache_cache_bkt_resize(void *);
static void mcache_cache_enable(void *);
-static void mcache_update(void *);
+static void mcache_update(thread_call_param_t __unused, thread_call_param_t __unused);
static void mcache_update_timeout(void *);
static void mcache_applyall(void (*)(mcache_t *));
static void mcache_reap_start(void *);
static void mcache_reap_done(void *);
-static void mcache_reap_timeout(void *);
+static void mcache_reap_timeout(thread_call_param_t __unused, thread_call_param_t);
static void mcache_notify(mcache_t *, u_int32_t);
static void mcache_purge(void *);
static LIST_HEAD(, mcache) mcache_head;
mcache_t *mcache_audit_cache;
+static thread_call_t mcache_reap_tcall;
+static thread_call_t mcache_update_tcall;
+
/*
* Initialize the framework; this is currently called as part of BSD init.
*/
unsigned int i;
char name[32];
+ VERIFY(mca_trn_max >= 2);
+
ncpu = ml_get_max_cpus();
+ (void) mcache_cache_line_size(); /* prime it */
mcache_llock_grp_attr = lck_grp_attr_alloc_init();
mcache_llock_grp = lck_grp_alloc_init("mcache.list",
mcache_llock_attr = lck_attr_alloc_init();
mcache_llock = lck_mtx_alloc_init(mcache_llock_grp, mcache_llock_attr);
+ mcache_reap_tcall = thread_call_allocate(mcache_reap_timeout, NULL);
+ mcache_update_tcall = thread_call_allocate(mcache_update, NULL);
+ if (mcache_reap_tcall == NULL || mcache_update_tcall == NULL)
+ panic("mcache_init: thread_call_allocate failed");
+
mcache_zone = zinit(MCACHE_ALLOC_SIZE, 256 * MCACHE_ALLOC_SIZE,
PAGE_SIZE, "mcache");
if (mcache_zone == NULL)
(btp->bt_bktsize + 1) * sizeof (void *), 0, 0, MCR_SLEEP);
}
- PE_parse_boot_argn("mcache_flags", &mcache_flags, sizeof (mcache_flags));
+ PE_parse_boot_argn("mcache_flags", &mcache_flags, sizeof(mcache_flags));
mcache_flags &= MCF_FLAGS_MASK;
mcache_audit_cache = mcache_create("audit", sizeof (mcache_audit_t),
0, 0, MCR_SLEEP);
- mcache_reap_interval = 15 * hz;
mcache_applyall(mcache_cache_bkt_enable);
mcache_ready = 1;
+
+ printf("mcache: %d CPU(s), %d bytes CPU cache line size\n",
+ ncpu, CPU_CACHE_LINE_SIZE);
}
/*
return (mcache_flags);
}
+/*
+ * Return the CPU cache line size.
+ */
+__private_extern__ unsigned int
+mcache_cache_line_size(void)
+{
+ if (cache_line_size == 0) {
+ ml_cpu_info_t cpu_info;
+ ml_cpu_get_info(&cpu_info);
+ cache_line_size = cpu_info.cache_line_size;
+ }
+ return (cache_line_size);
+}
+
/*
* Create a cache using the zone allocator as the backend slab allocator.
* The caller may specify any alignment for the object; if it specifies 0
* is okay since we've allocated extra space for this.
*/
cp = (mcache_t *)
- P2ROUNDUP((intptr_t)buf + sizeof (void *), CPU_CACHE_SIZE);
+ P2ROUNDUP((intptr_t)buf + sizeof (void *), CPU_CACHE_LINE_SIZE);
pbuf = (void **)((intptr_t)cp - sizeof (void *));
*pbuf = buf;
for (c = 0; c < ncpu; c++) {
mcache_cpu_t *ccp = &cp->mc_cpu[c];
- VERIFY(IS_P2ALIGNED(ccp, CPU_CACHE_SIZE));
+ VERIFY(IS_P2ALIGNED(ccp, CPU_CACHE_LINE_SIZE));
lck_mtx_init(&ccp->cc_lock, cp->mc_cpu_lock_grp,
cp->mc_cpu_lock_attr);
ccp->cc_objs = -1;
lck_mtx_lock_spin(&cp->mc_sync_lock);
cp->mc_enable_cnt++;
lck_mtx_unlock(&cp->mc_sync_lock);
-
}
__private_extern__ boolean_t
-mcache_purge_cache(mcache_t *cp)
+mcache_purge_cache(mcache_t *cp, boolean_t async)
{
/*
* Purging a cache that has no per-CPU caches or is already
cp->mc_purge_cnt++;
lck_mtx_unlock(&cp->mc_sync_lock);
- mcache_dispatch(mcache_purge, cp);
+ if (async)
+ mcache_dispatch(mcache_purge, cp);
+ else
+ mcache_purge(cp);
return (TRUE);
}
}
static void
-mcache_reap_timeout(void *arg)
+mcache_reap_timeout(thread_call_param_t dummy __unused,
+ thread_call_param_t arg)
{
volatile UInt32 *flag = arg;
static void
mcache_reap_done(void *flag)
{
- timeout(mcache_reap_timeout, flag, mcache_reap_interval);
+ uint64_t deadline, leeway;
+
+ clock_interval_to_deadline(mcache_reap_interval, NSEC_PER_SEC,
+ &deadline);
+ clock_interval_to_absolutetime_interval(mcache_reap_interval_leeway,
+ NSEC_PER_SEC, &leeway);
+ thread_call_enter_delayed_with_leeway(mcache_reap_tcall, flag,
+ deadline, leeway, THREAD_CALL_DELAY_LEEWAY);
}
static void
static void
mcache_update_timeout(__unused void *arg)
{
- timeout(mcache_update, NULL, mcache_reap_interval);
+ uint64_t deadline, leeway;
+
+ clock_interval_to_deadline(mcache_reap_interval, NSEC_PER_SEC,
+ &deadline);
+ clock_interval_to_absolutetime_interval(mcache_reap_interval_leeway,
+ NSEC_PER_SEC, &leeway);
+ thread_call_enter_delayed_with_leeway(mcache_update_tcall, NULL,
+ deadline, leeway, THREAD_CALL_DELAY_LEEWAY);
}
static void
-mcache_update(__unused void *arg)
+mcache_update(thread_call_param_t arg __unused,
+ thread_call_param_t dummy __unused)
{
mcache_applyall(mcache_cache_update);
- mcache_dispatch(mcache_update_timeout, NULL);
+ mcache_update_timeout(NULL);
}
static void
}
__private_extern__ void
-mcache_buffer_log(mcache_audit_t *mca, void *addr, mcache_t *cp)
+mcache_buffer_log(mcache_audit_t *mca, void *addr, mcache_t *cp,
+ struct timeval *base_ts)
{
+ struct timeval now, base = { 0, 0 };
+ void *stack[MCACHE_STACK_DEPTH + 1];
+ struct mca_trn *transaction;
+
+ transaction = &mca->mca_trns[mca->mca_next_trn];
+
mca->mca_addr = addr;
mca->mca_cache = cp;
- mca->mca_pthread = mca->mca_thread;
- mca->mca_thread = current_thread();
- bcopy(mca->mca_stack, mca->mca_pstack, sizeof (mca->mca_pstack));
- mca->mca_pdepth = mca->mca_depth;
- bzero(mca->mca_stack, sizeof (mca->mca_stack));
- mca->mca_depth = OSBacktrace(mca->mca_stack, MCACHE_STACK_DEPTH);
+
+ transaction->mca_thread = current_thread();
+
+ bzero(stack, sizeof (stack));
+ transaction->mca_depth = OSBacktrace(stack, MCACHE_STACK_DEPTH + 1) - 1;
+ bcopy(&stack[1], transaction->mca_stack,
+ sizeof (transaction->mca_stack));
+
+ microuptime(&now);
+ if (base_ts != NULL)
+ base = *base_ts;
+ /* tstamp is in ms relative to base_ts */
+ transaction->mca_tstamp = ((now.tv_usec - base.tv_usec) / 1000);
+ if ((now.tv_sec - base.tv_sec) > 0)
+ transaction->mca_tstamp += ((now.tv_sec - base.tv_sec) * 1000);
+
+ mca->mca_next_trn =
+ (mca->mca_next_trn + 1) % mca_trn_max;
}
__private_extern__ void
#undef panic
+#define DUMP_TRN_FMT() \
+ "%s transaction thread %p saved PC stack (%d deep):\n" \
+ "\t%p, %p, %p, %p, %p, %p, %p, %p\n" \
+ "\t%p, %p, %p, %p, %p, %p, %p, %p\n"
+
+#define DUMP_TRN_FIELDS(s, x) \
+ s, \
+ mca->mca_trns[x].mca_thread, mca->mca_trns[x].mca_depth, \
+ mca->mca_trns[x].mca_stack[0], mca->mca_trns[x].mca_stack[1], \
+ mca->mca_trns[x].mca_stack[2], mca->mca_trns[x].mca_stack[3], \
+ mca->mca_trns[x].mca_stack[4], mca->mca_trns[x].mca_stack[5], \
+ mca->mca_trns[x].mca_stack[6], mca->mca_trns[x].mca_stack[7], \
+ mca->mca_trns[x].mca_stack[8], mca->mca_trns[x].mca_stack[9], \
+ mca->mca_trns[x].mca_stack[10], mca->mca_trns[x].mca_stack[11], \
+ mca->mca_trns[x].mca_stack[12], mca->mca_trns[x].mca_stack[13], \
+ mca->mca_trns[x].mca_stack[14], mca->mca_trns[x].mca_stack[15]
+
+#define MCA_TRN_LAST ((mca->mca_next_trn + mca_trn_max) % mca_trn_max)
+#define MCA_TRN_PREV ((mca->mca_next_trn + mca_trn_max - 1) % mca_trn_max)
+
__private_extern__ char *
mcache_dump_mca(mcache_audit_t *mca)
{
return (NULL);
snprintf(mca_dump_buf, DUMP_MCA_BUF_SIZE,
- "mca %p: addr %p, cache %p (%s)\n"
- "last transaction; thread %p, saved PC stack (%d deep):\n"
- "\t%p, %p, %p, %p, %p, %p, %p, %p\n"
- "\t%p, %p, %p, %p, %p, %p, %p, %p\n"
- "previous transaction; thread %p, saved PC stack (%d deep):\n"
- "\t%p, %p, %p, %p, %p, %p, %p, %p\n"
- "\t%p, %p, %p, %p, %p, %p, %p, %p\n",
+ "mca %p: addr %p, cache %p (%s) nxttrn %d\n"
+ DUMP_TRN_FMT()
+ DUMP_TRN_FMT(),
+
mca, mca->mca_addr, mca->mca_cache,
mca->mca_cache ? mca->mca_cache->mc_name : "?",
- mca->mca_thread, mca->mca_depth,
- mca->mca_stack[0], mca->mca_stack[1], mca->mca_stack[2],
- mca->mca_stack[3], mca->mca_stack[4], mca->mca_stack[5],
- mca->mca_stack[6], mca->mca_stack[7], mca->mca_stack[8],
- mca->mca_stack[9], mca->mca_stack[10], mca->mca_stack[11],
- mca->mca_stack[12], mca->mca_stack[13], mca->mca_stack[14],
- mca->mca_stack[15],
- mca->mca_pthread, mca->mca_pdepth,
- mca->mca_pstack[0], mca->mca_pstack[1], mca->mca_pstack[2],
- mca->mca_pstack[3], mca->mca_pstack[4], mca->mca_pstack[5],
- mca->mca_pstack[6], mca->mca_pstack[7], mca->mca_pstack[8],
- mca->mca_pstack[9], mca->mca_pstack[10], mca->mca_pstack[11],
- mca->mca_pstack[12], mca->mca_pstack[13], mca->mca_pstack[14],
- mca->mca_pstack[15]);
+ mca->mca_next_trn,
+
+ DUMP_TRN_FIELDS("last", MCA_TRN_LAST),
+ DUMP_TRN_FIELDS("previous", MCA_TRN_PREV));
return (mca_dump_buf);
}
projects / apple / xnu.git / blobdiff