X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=src%2Fcommon%2Fringbuffer%2Fring_buffer_frontend.c;h=62543fa2b6e63499daea3dcad231065e94b1da4e;hb=a9fd951a21f28704ffdfd4217766f725a217208b;hp=9074dbcb3a41bde88316dcf107103a76d5f3d50c;hpb=e4db8f987126e1c1e586e5ae1e1ba73d0ab43438;p=lttng-ust.git diff --git a/src/common/ringbuffer/ring_buffer_frontend.c b/src/common/ringbuffer/ring_buffer_frontend.c index 9074dbcb..62543fa2 100644 --- a/src/common/ringbuffer/ring_buffer_frontend.c +++ b/src/common/ringbuffer/ring_buffer_frontend.c @@ -53,16 +53,16 @@ #include "common/macros.h" #include -#include +#include -#include "smp.h" +#include "common/smp.h" #include "ringbuffer-config.h" #include "vatomic.h" #include "backend.h" #include "frontend.h" #include "shm.h" #include "rb-init.h" -#include "liblttng-ust/compat.h" /* For ENODATA */ +#include "common/compat/errno.h" /* For ENODATA */ /* Print DBG() messages about events lost only every 1048576 hits */ #define DBG_PRINT_NR_LOST (1UL << 20) @@ -78,6 +78,8 @@ /* * Non-static to ensure the compiler does not optimize away the xor. */ +uint8_t lttng_crash_magic_xor[] + __attribute__((visibility("hidden"))); uint8_t lttng_crash_magic_xor[] = RB_CRASH_DUMP_ABI_MAGIC_XOR; /* @@ -115,8 +117,8 @@ DEFINE_URCU_TLS(unsigned int, lib_ring_buffer_nesting); static pthread_mutex_t wakeup_fd_mutex = PTHREAD_MUTEX_INITIALIZER; static -void lib_ring_buffer_print_errors(struct lttng_ust_lib_ring_buffer_channel *chan, - struct lttng_ust_lib_ring_buffer *buf, int cpu, +void lib_ring_buffer_print_errors(struct lttng_ust_ring_buffer_channel *chan, + struct lttng_ust_ring_buffer *buf, int cpu, struct lttng_ust_shm_handle *handle); /* @@ -147,7 +149,7 @@ void lttng_ust_ringbuffer_set_allow_blocking(void) } /* Get blocking timeout, in ms */ -static int lttng_ust_ringbuffer_get_timeout(struct lttng_ust_lib_ring_buffer_channel *chan) +static int lttng_ust_ringbuffer_get_timeout(struct lttng_ust_ring_buffer_channel *chan) { if (!lttng_ust_allow_blocking) return 0; @@ -163,11 +165,11 @@ static int lttng_ust_ringbuffer_get_timeout(struct lttng_ust_lib_ring_buffer_cha * should not be using the iterator concurrently with reset. The previous * current iterator record is reset. */ -void lib_ring_buffer_reset(struct lttng_ust_lib_ring_buffer *buf, +void lib_ring_buffer_reset(struct lttng_ust_ring_buffer *buf, struct lttng_ust_shm_handle *handle) { - struct lttng_ust_lib_ring_buffer_channel *chan; - const struct lttng_ust_lib_ring_buffer_config *config; + struct lttng_ust_ring_buffer_channel *chan; + const struct lttng_ust_ring_buffer_config *config; unsigned int i; chan = shmp(handle, buf->backend.chan); @@ -220,7 +222,7 @@ void lib_ring_buffer_reset(struct lttng_ust_lib_ring_buffer *buf, * be using the iterator concurrently with reset. The previous current iterator * record is reset. */ -void channel_reset(struct lttng_ust_lib_ring_buffer_channel *chan) +void channel_reset(struct lttng_ust_ring_buffer_channel *chan) { /* * Reset iterators first. Will put the subbuffer if held for reading. @@ -234,9 +236,9 @@ void channel_reset(struct lttng_ust_lib_ring_buffer_channel *chan) } static -void init_crash_abi(const struct lttng_ust_lib_ring_buffer_config *config, +void init_crash_abi(const struct lttng_ust_ring_buffer_config *config, struct lttng_crash_abi *crash_abi, - struct lttng_ust_lib_ring_buffer *buf, + struct lttng_ust_ring_buffer *buf, struct channel_backend *chanb, struct shm_object *shmobj, struct lttng_ust_shm_handle *handle) @@ -264,14 +266,14 @@ void init_crash_abi(const struct lttng_ust_lib_ring_buffer_config *config, crash_abi->offset.buf_wsb_array = (uint32_t) ((char *) shmp(handle, buf->backend.buf_wsb) - (char *) buf); crash_abi->offset.buf_wsb_id = - offsetof(struct lttng_ust_lib_ring_buffer_backend_subbuffer, id); + offsetof(struct lttng_ust_ring_buffer_backend_subbuffer, id); crash_abi->offset.sb_array = (uint32_t) ((char *) shmp(handle, buf->backend.array) - (char *) buf); crash_abi->offset.sb_array_shmp_offset = - offsetof(struct lttng_ust_lib_ring_buffer_backend_pages_shmp, + offsetof(struct lttng_ust_ring_buffer_backend_pages_shmp, shmp._ref.offset); crash_abi->offset.sb_backend_p_offset = - offsetof(struct lttng_ust_lib_ring_buffer_backend_pages, + offsetof(struct lttng_ust_ring_buffer_backend_pages, p._ref.offset); /* Field length */ @@ -280,19 +282,19 @@ void init_crash_abi(const struct lttng_ust_lib_ring_buffer_config *config, crash_abi->length.commit_hot_seq = sizeof(((struct commit_counters_hot *) NULL)->seq); crash_abi->length.buf_wsb_id = - sizeof(((struct lttng_ust_lib_ring_buffer_backend_subbuffer *) NULL)->id); + sizeof(((struct lttng_ust_ring_buffer_backend_subbuffer *) NULL)->id); crash_abi->length.sb_array_shmp_offset = - sizeof(((struct lttng_ust_lib_ring_buffer_backend_pages_shmp *) NULL)->shmp._ref.offset); + sizeof(((struct lttng_ust_ring_buffer_backend_pages_shmp *) NULL)->shmp._ref.offset); crash_abi->length.sb_backend_p_offset = - sizeof(((struct lttng_ust_lib_ring_buffer_backend_pages *) NULL)->p._ref.offset); + sizeof(((struct lttng_ust_ring_buffer_backend_pages *) NULL)->p._ref.offset); /* Array stride */ crash_abi->stride.commit_hot_array = sizeof(struct commit_counters_hot); crash_abi->stride.buf_wsb_array = - sizeof(struct lttng_ust_lib_ring_buffer_backend_subbuffer); + sizeof(struct lttng_ust_ring_buffer_backend_subbuffer); crash_abi->stride.sb_array = - sizeof(struct lttng_ust_lib_ring_buffer_backend_pages_shmp); + sizeof(struct lttng_ust_ring_buffer_backend_pages_shmp); /* Buffer constants */ crash_abi->buf_size = chanb->buf_size; @@ -325,16 +327,16 @@ void init_crash_abi(const struct lttng_ust_lib_ring_buffer_config *config, /* * Must be called under cpu hotplug protection. */ -int lib_ring_buffer_create(struct lttng_ust_lib_ring_buffer *buf, +int lib_ring_buffer_create(struct lttng_ust_ring_buffer *buf, struct channel_backend *chanb, int cpu, struct lttng_ust_shm_handle *handle, struct shm_object *shmobj) { - const struct lttng_ust_lib_ring_buffer_config *config = &chanb->config; - struct lttng_ust_lib_ring_buffer_channel *chan = caa_container_of(chanb, - struct lttng_ust_lib_ring_buffer_channel, backend); - struct lttng_ust_lib_ring_buffer_backend_subbuffer *wsb; - struct lttng_ust_lib_ring_buffer_channel *shmp_chan; + const struct lttng_ust_ring_buffer_config *config = &chanb->config; + struct lttng_ust_ring_buffer_channel *chan = caa_container_of(chanb, + struct lttng_ust_ring_buffer_channel, backend); + struct lttng_ust_ring_buffer_backend_subbuffer *wsb; + struct lttng_ust_ring_buffer_channel *shmp_chan; struct commit_counters_hot *cc_hot; void *priv = channel_get_private_config(chan); size_t subbuf_header_size; @@ -431,9 +433,9 @@ static void lib_ring_buffer_channel_switch_timer(int sig __attribute__((unused)), siginfo_t *si, void *uc __attribute__((unused))) { - const struct lttng_ust_lib_ring_buffer_config *config; + const struct lttng_ust_ring_buffer_config *config; struct lttng_ust_shm_handle *handle; - struct lttng_ust_lib_ring_buffer_channel *chan; + struct lttng_ust_ring_buffer_channel *chan; int cpu; assert(CMM_LOAD_SHARED(timer_signal.tid) == pthread_self()); @@ -450,7 +452,7 @@ void lib_ring_buffer_channel_switch_timer(int sig __attribute__((unused)), pthread_mutex_lock(&wakeup_fd_mutex); if (config->alloc == RING_BUFFER_ALLOC_PER_CPU) { for_each_possible_cpu(cpu) { - struct lttng_ust_lib_ring_buffer *buf = + struct lttng_ust_ring_buffer *buf = shmp(handle, chan->backend.buf[cpu].shmp); if (!buf) @@ -460,7 +462,7 @@ void lib_ring_buffer_channel_switch_timer(int sig __attribute__((unused)), chan->handle); } } else { - struct lttng_ust_lib_ring_buffer *buf = + struct lttng_ust_ring_buffer *buf = shmp(handle, chan->backend.buf[0].shmp); if (!buf) @@ -475,9 +477,9 @@ end: } static -int lib_ring_buffer_poll_deliver(const struct lttng_ust_lib_ring_buffer_config *config, - struct lttng_ust_lib_ring_buffer *buf, - struct lttng_ust_lib_ring_buffer_channel *chan, +int lib_ring_buffer_poll_deliver(const struct lttng_ust_ring_buffer_config *config, + struct lttng_ust_ring_buffer *buf, + struct lttng_ust_ring_buffer_channel *chan, struct lttng_ust_shm_handle *handle) { unsigned long consumed_old, consumed_idx, commit_count, write_offset; @@ -521,7 +523,7 @@ int lib_ring_buffer_poll_deliver(const struct lttng_ust_lib_ring_buffer_config * } static -void lib_ring_buffer_wakeup(struct lttng_ust_lib_ring_buffer *buf, +void lib_ring_buffer_wakeup(struct lttng_ust_ring_buffer *buf, struct lttng_ust_shm_handle *handle) { int wakeup_fd = shm_get_wakeup_fd(handle, &buf->self._ref); @@ -586,9 +588,9 @@ void lib_ring_buffer_wakeup(struct lttng_ust_lib_ring_buffer *buf, } static -void lib_ring_buffer_channel_do_read(struct lttng_ust_lib_ring_buffer_channel *chan) +void lib_ring_buffer_channel_do_read(struct lttng_ust_ring_buffer_channel *chan) { - const struct lttng_ust_lib_ring_buffer_config *config; + const struct lttng_ust_ring_buffer_config *config; struct lttng_ust_shm_handle *handle; int cpu; @@ -601,7 +603,7 @@ void lib_ring_buffer_channel_do_read(struct lttng_ust_lib_ring_buffer_channel *c pthread_mutex_lock(&wakeup_fd_mutex); if (config->alloc == RING_BUFFER_ALLOC_PER_CPU) { for_each_possible_cpu(cpu) { - struct lttng_ust_lib_ring_buffer *buf = + struct lttng_ust_ring_buffer *buf = shmp(handle, chan->backend.buf[cpu].shmp); if (!buf) @@ -613,7 +615,7 @@ void lib_ring_buffer_channel_do_read(struct lttng_ust_lib_ring_buffer_channel *c } } } else { - struct lttng_ust_lib_ring_buffer *buf = + struct lttng_ust_ring_buffer *buf = shmp(handle, chan->backend.buf[0].shmp); if (!buf) @@ -632,7 +634,7 @@ static void lib_ring_buffer_channel_read_timer(int sig __attribute__((unused)), siginfo_t *si, void *uc __attribute__((unused))) { - struct lttng_ust_lib_ring_buffer_channel *chan; + struct lttng_ust_ring_buffer_channel *chan; assert(CMM_LOAD_SHARED(timer_signal.tid) == pthread_self()); chan = si->si_value.sival_ptr; @@ -782,7 +784,7 @@ void lib_ring_buffer_wait_signal_thread_qs(unsigned int signr) } static -void lib_ring_buffer_channel_switch_timer_start(struct lttng_ust_lib_ring_buffer_channel *chan) +void lib_ring_buffer_channel_switch_timer_start(struct lttng_ust_ring_buffer_channel *chan) { struct sigevent sev; struct itimerspec its; @@ -816,7 +818,7 @@ void lib_ring_buffer_channel_switch_timer_start(struct lttng_ust_lib_ring_buffer } static -void lib_ring_buffer_channel_switch_timer_stop(struct lttng_ust_lib_ring_buffer_channel *chan) +void lib_ring_buffer_channel_switch_timer_stop(struct lttng_ust_ring_buffer_channel *chan) { int ret; @@ -835,9 +837,9 @@ void lib_ring_buffer_channel_switch_timer_stop(struct lttng_ust_lib_ring_buffer_ } static -void lib_ring_buffer_channel_read_timer_start(struct lttng_ust_lib_ring_buffer_channel *chan) +void lib_ring_buffer_channel_read_timer_start(struct lttng_ust_ring_buffer_channel *chan) { - const struct lttng_ust_lib_ring_buffer_config *config = &chan->backend.config; + const struct lttng_ust_ring_buffer_config *config = &chan->backend.config; struct sigevent sev; struct itimerspec its; int ret; @@ -870,9 +872,9 @@ void lib_ring_buffer_channel_read_timer_start(struct lttng_ust_lib_ring_buffer_c } static -void lib_ring_buffer_channel_read_timer_stop(struct lttng_ust_lib_ring_buffer_channel *chan) +void lib_ring_buffer_channel_read_timer_stop(struct lttng_ust_ring_buffer_channel *chan) { - const struct lttng_ust_lib_ring_buffer_config *config = &chan->backend.config; + const struct lttng_ust_ring_buffer_config *config = &chan->backend.config; int ret; if (config->wakeup != RING_BUFFER_WAKEUP_BY_TIMER @@ -896,29 +898,29 @@ void lib_ring_buffer_channel_read_timer_stop(struct lttng_ust_lib_ring_buffer_ch chan->read_timer_enabled = 0; } -static void channel_unregister_notifiers(struct lttng_ust_lib_ring_buffer_channel *chan, +static void channel_unregister_notifiers(struct lttng_ust_ring_buffer_channel *chan, struct lttng_ust_shm_handle *handle __attribute__((unused))) { lib_ring_buffer_channel_switch_timer_stop(chan); lib_ring_buffer_channel_read_timer_stop(chan); } -static void channel_print_errors(struct lttng_ust_lib_ring_buffer_channel *chan, +static void channel_print_errors(struct lttng_ust_ring_buffer_channel *chan, struct lttng_ust_shm_handle *handle) { - const struct lttng_ust_lib_ring_buffer_config *config = + const struct lttng_ust_ring_buffer_config *config = &chan->backend.config; int cpu; if (config->alloc == RING_BUFFER_ALLOC_PER_CPU) { for_each_possible_cpu(cpu) { - struct lttng_ust_lib_ring_buffer *buf = + struct lttng_ust_ring_buffer *buf = shmp(handle, chan->backend.buf[cpu].shmp); if (buf) lib_ring_buffer_print_errors(chan, buf, cpu, handle); } } else { - struct lttng_ust_lib_ring_buffer *buf = + struct lttng_ust_ring_buffer *buf = shmp(handle, chan->backend.buf[0].shmp); if (buf) @@ -926,7 +928,7 @@ static void channel_print_errors(struct lttng_ust_lib_ring_buffer_channel *chan, } } -static void channel_free(struct lttng_ust_lib_ring_buffer_channel *chan, +static void channel_free(struct lttng_ust_ring_buffer_channel *chan, struct lttng_ust_shm_handle *handle, int consumer) { @@ -959,7 +961,7 @@ static void channel_free(struct lttng_ust_lib_ring_buffer_channel *chan, * Holds cpu hotplug. * Returns NULL on failure. */ -struct lttng_ust_shm_handle *channel_create(const struct lttng_ust_lib_ring_buffer_config *config, +struct lttng_ust_shm_handle *channel_create(const struct lttng_ust_ring_buffer_config *config, const char *name, size_t priv_data_align, size_t priv_data_size, @@ -973,7 +975,7 @@ struct lttng_ust_shm_handle *channel_create(const struct lttng_ust_lib_ring_buff { int ret; size_t shmsize, chansize; - struct lttng_ust_lib_ring_buffer_channel *chan; + struct lttng_ust_ring_buffer_channel *chan; struct lttng_ust_shm_handle *handle; struct shm_object *shmobj; unsigned int nr_streams; @@ -1014,9 +1016,9 @@ struct lttng_ust_shm_handle *channel_create(const struct lttng_ust_lib_ring_buff goto error_table_alloc; /* Calculate the shm allocation layout */ - shmsize = sizeof(struct lttng_ust_lib_ring_buffer_channel); - shmsize += lttng_ust_offset_align(shmsize, __alignof__(struct lttng_ust_lib_ring_buffer_shmp)); - shmsize += sizeof(struct lttng_ust_lib_ring_buffer_shmp) * nr_streams; + shmsize = sizeof(struct lttng_ust_ring_buffer_channel); + shmsize += lttng_ust_offset_align(shmsize, __alignof__(struct lttng_ust_ring_buffer_shmp)); + shmsize += sizeof(struct lttng_ust_ring_buffer_shmp) * nr_streams; chansize = shmsize; if (priv_data_align) shmsize += lttng_ust_offset_align(shmsize, priv_data_align); @@ -1027,7 +1029,7 @@ struct lttng_ust_shm_handle *channel_create(const struct lttng_ust_lib_ring_buff -1, -1); if (!shmobj) goto error_append; - /* struct lttng_ust_lib_ring_buffer_channel is at object 0, offset 0 (hardcoded) */ + /* struct lttng_ust_ring_buffer_channel is at object 0, offset 0 (hardcoded) */ set_shmp(handle->chan, zalloc_shm(shmobj, chansize)); assert(handle->chan._ref.index == 0); assert(handle->chan._ref.offset == 0); @@ -1101,7 +1103,7 @@ struct lttng_ust_shm_handle *channel_handle_create(void *data, memory_map_size, wakeup_fd); if (!object) goto error_table_object; - /* struct lttng_ust_lib_ring_buffer_channel is at object 0, offset 0 (hardcoded) */ + /* struct lttng_ust_ring_buffer_channel is at object 0, offset 0 (hardcoded) */ handle->chan._ref.index = 0; handle->chan._ref.offset = 0; return handle; @@ -1135,7 +1137,7 @@ unsigned int channel_handle_get_nr_streams(struct lttng_ust_shm_handle *handle) } static -void channel_release(struct lttng_ust_lib_ring_buffer_channel *chan, struct lttng_ust_shm_handle *handle, +void channel_release(struct lttng_ust_ring_buffer_channel *chan, struct lttng_ust_shm_handle *handle, int consumer) { channel_free(chan, handle, consumer); @@ -1151,7 +1153,7 @@ void channel_release(struct lttng_ust_lib_ring_buffer_channel *chan, struct lttn * consumption of finalized channels, get_subbuf() will return -ENODATA. * They should release their handle at that point. */ -void channel_destroy(struct lttng_ust_lib_ring_buffer_channel *chan, struct lttng_ust_shm_handle *handle, +void channel_destroy(struct lttng_ust_ring_buffer_channel *chan, struct lttng_ust_shm_handle *handle, int consumer) { if (consumer) { @@ -1174,9 +1176,9 @@ void channel_destroy(struct lttng_ust_lib_ring_buffer_channel *chan, struct lttn return; } -struct lttng_ust_lib_ring_buffer *channel_get_ring_buffer( - const struct lttng_ust_lib_ring_buffer_config *config, - struct lttng_ust_lib_ring_buffer_channel *chan, int cpu, +struct lttng_ust_ring_buffer *channel_get_ring_buffer( + const struct lttng_ust_ring_buffer_config *config, + struct lttng_ust_ring_buffer_channel *chan, int cpu, struct lttng_ust_shm_handle *handle, int *shm_fd, int *wait_fd, int *wakeup_fd, @@ -1200,8 +1202,8 @@ struct lttng_ust_lib_ring_buffer *channel_get_ring_buffer( } int ring_buffer_channel_close_wait_fd( - const struct lttng_ust_lib_ring_buffer_config *config __attribute__((unused)), - struct lttng_ust_lib_ring_buffer_channel *chan __attribute__((unused)), + const struct lttng_ust_ring_buffer_config *config __attribute__((unused)), + struct lttng_ust_ring_buffer_channel *chan __attribute__((unused)), struct lttng_ust_shm_handle *handle) { struct shm_ref *ref; @@ -1211,8 +1213,8 @@ int ring_buffer_channel_close_wait_fd( } int ring_buffer_channel_close_wakeup_fd( - const struct lttng_ust_lib_ring_buffer_config *config __attribute__((unused)), - struct lttng_ust_lib_ring_buffer_channel *chan __attribute__((unused)), + const struct lttng_ust_ring_buffer_config *config __attribute__((unused)), + struct lttng_ust_ring_buffer_channel *chan __attribute__((unused)), struct lttng_ust_shm_handle *handle) { struct shm_ref *ref; @@ -1221,8 +1223,8 @@ int ring_buffer_channel_close_wakeup_fd( return shm_close_wakeup_fd(handle, ref); } -int ring_buffer_stream_close_wait_fd(const struct lttng_ust_lib_ring_buffer_config *config, - struct lttng_ust_lib_ring_buffer_channel *chan, +int ring_buffer_stream_close_wait_fd(const struct lttng_ust_ring_buffer_config *config, + struct lttng_ust_ring_buffer_channel *chan, struct lttng_ust_shm_handle *handle, int cpu) { @@ -1238,8 +1240,8 @@ int ring_buffer_stream_close_wait_fd(const struct lttng_ust_lib_ring_buffer_conf return shm_close_wait_fd(handle, ref); } -int ring_buffer_stream_close_wakeup_fd(const struct lttng_ust_lib_ring_buffer_config *config, - struct lttng_ust_lib_ring_buffer_channel *chan, +int ring_buffer_stream_close_wakeup_fd(const struct lttng_ust_ring_buffer_config *config, + struct lttng_ust_ring_buffer_channel *chan, struct lttng_ust_shm_handle *handle, int cpu) { @@ -1259,7 +1261,7 @@ int ring_buffer_stream_close_wakeup_fd(const struct lttng_ust_lib_ring_buffer_co return ret; } -int lib_ring_buffer_open_read(struct lttng_ust_lib_ring_buffer *buf, +int lib_ring_buffer_open_read(struct lttng_ust_ring_buffer *buf, struct lttng_ust_shm_handle *handle __attribute__((unused))) { if (uatomic_cmpxchg(&buf->active_readers, 0, 1) != 0) @@ -1268,10 +1270,10 @@ int lib_ring_buffer_open_read(struct lttng_ust_lib_ring_buffer *buf, return 0; } -void lib_ring_buffer_release_read(struct lttng_ust_lib_ring_buffer *buf, +void lib_ring_buffer_release_read(struct lttng_ust_ring_buffer *buf, struct lttng_ust_shm_handle *handle) { - struct lttng_ust_lib_ring_buffer_channel *chan = shmp(handle, buf->backend.chan); + struct lttng_ust_ring_buffer_channel *chan = shmp(handle, buf->backend.chan); if (!chan) return; @@ -1290,12 +1292,12 @@ void lib_ring_buffer_release_read(struct lttng_ust_lib_ring_buffer *buf, * data to read at consumed position, or 0 if the get operation succeeds. */ -int lib_ring_buffer_snapshot(struct lttng_ust_lib_ring_buffer *buf, +int lib_ring_buffer_snapshot(struct lttng_ust_ring_buffer *buf, unsigned long *consumed, unsigned long *produced, struct lttng_ust_shm_handle *handle) { - struct lttng_ust_lib_ring_buffer_channel *chan; - const struct lttng_ust_lib_ring_buffer_config *config; + struct lttng_ust_ring_buffer_channel *chan; + const struct lttng_ust_ring_buffer_config *config; unsigned long consumed_cur, write_offset; int finalized; @@ -1355,12 +1357,12 @@ nodata: * consumer positions without regard for the "snapshot" feature. */ int lib_ring_buffer_snapshot_sample_positions( - struct lttng_ust_lib_ring_buffer *buf, + struct lttng_ust_ring_buffer *buf, unsigned long *consumed, unsigned long *produced, struct lttng_ust_shm_handle *handle) { - struct lttng_ust_lib_ring_buffer_channel *chan; - const struct lttng_ust_lib_ring_buffer_config *config; + struct lttng_ust_ring_buffer_channel *chan; + const struct lttng_ust_ring_buffer_config *config; chan = shmp(handle, buf->backend.chan); if (!chan) @@ -1385,12 +1387,12 @@ int lib_ring_buffer_snapshot_sample_positions( * @buf: ring buffer * @consumed_new: new consumed count value */ -void lib_ring_buffer_move_consumer(struct lttng_ust_lib_ring_buffer *buf, +void lib_ring_buffer_move_consumer(struct lttng_ust_ring_buffer *buf, unsigned long consumed_new, struct lttng_ust_shm_handle *handle) { - struct lttng_ust_lib_ring_buffer_backend *bufb = &buf->backend; - struct lttng_ust_lib_ring_buffer_channel *chan; + struct lttng_ust_ring_buffer_backend *bufb = &buf->backend; + struct lttng_ust_ring_buffer_channel *chan; unsigned long consumed; chan = shmp(handle, bufb->chan); @@ -1417,12 +1419,12 @@ void lib_ring_buffer_move_consumer(struct lttng_ust_lib_ring_buffer *buf, * Returns -ENODATA if buffer is finalized, -EAGAIN if there is currently no * data to read at consumed position, or 0 if the get operation succeeds. */ -int lib_ring_buffer_get_subbuf(struct lttng_ust_lib_ring_buffer *buf, +int lib_ring_buffer_get_subbuf(struct lttng_ust_ring_buffer *buf, unsigned long consumed, struct lttng_ust_shm_handle *handle) { - struct lttng_ust_lib_ring_buffer_channel *chan; - const struct lttng_ust_lib_ring_buffer_config *config; + struct lttng_ust_ring_buffer_channel *chan; + const struct lttng_ust_ring_buffer_config *config; unsigned long consumed_cur, consumed_idx, commit_count, write_offset; int ret, finalized, nr_retry = LTTNG_UST_RING_BUFFER_GET_RETRY; struct commit_counters_cold *cc_cold; @@ -1581,15 +1583,15 @@ nodata: * lib_ring_buffer_put_subbuf - release exclusive subbuffer access * @buf: ring buffer */ -void lib_ring_buffer_put_subbuf(struct lttng_ust_lib_ring_buffer *buf, +void lib_ring_buffer_put_subbuf(struct lttng_ust_ring_buffer *buf, struct lttng_ust_shm_handle *handle) { - struct lttng_ust_lib_ring_buffer_backend *bufb = &buf->backend; - struct lttng_ust_lib_ring_buffer_channel *chan; - const struct lttng_ust_lib_ring_buffer_config *config; + struct lttng_ust_ring_buffer_backend *bufb = &buf->backend; + struct lttng_ust_ring_buffer_channel *chan; + const struct lttng_ust_ring_buffer_config *config; unsigned long sb_bindex, consumed_idx, consumed; - struct lttng_ust_lib_ring_buffer_backend_pages_shmp *rpages; - struct lttng_ust_lib_ring_buffer_backend_pages *backend_pages; + struct lttng_ust_ring_buffer_backend_pages_shmp *rpages; + struct lttng_ust_ring_buffer_backend_pages *backend_pages; chan = shmp(handle, bufb->chan); if (!chan) @@ -1651,13 +1653,13 @@ void lib_ring_buffer_put_subbuf(struct lttng_ust_lib_ring_buffer *buf, * position and the writer position. (inclusive) */ static -void lib_ring_buffer_print_subbuffer_errors(struct lttng_ust_lib_ring_buffer *buf, - struct lttng_ust_lib_ring_buffer_channel *chan, +void lib_ring_buffer_print_subbuffer_errors(struct lttng_ust_ring_buffer *buf, + struct lttng_ust_ring_buffer_channel *chan, unsigned long cons_offset, int cpu, struct lttng_ust_shm_handle *handle) { - const struct lttng_ust_lib_ring_buffer_config *config = &chan->backend.config; + const struct lttng_ust_ring_buffer_config *config = &chan->backend.config; unsigned long cons_idx, commit_count, commit_count_sb; struct commit_counters_hot *cc_hot; struct commit_counters_cold *cc_cold; @@ -1686,11 +1688,11 @@ void lib_ring_buffer_print_subbuffer_errors(struct lttng_ust_lib_ring_buffer *bu } static -void lib_ring_buffer_print_buffer_errors(struct lttng_ust_lib_ring_buffer *buf, - struct lttng_ust_lib_ring_buffer_channel *chan, +void lib_ring_buffer_print_buffer_errors(struct lttng_ust_ring_buffer *buf, + struct lttng_ust_ring_buffer_channel *chan, int cpu, struct lttng_ust_shm_handle *handle) { - const struct lttng_ust_lib_ring_buffer_config *config = &chan->backend.config; + const struct lttng_ust_ring_buffer_config *config = &chan->backend.config; unsigned long write_offset, cons_offset; /* @@ -1716,11 +1718,11 @@ void lib_ring_buffer_print_buffer_errors(struct lttng_ust_lib_ring_buffer *buf, } static -void lib_ring_buffer_print_errors(struct lttng_ust_lib_ring_buffer_channel *chan, - struct lttng_ust_lib_ring_buffer *buf, int cpu, +void lib_ring_buffer_print_errors(struct lttng_ust_ring_buffer_channel *chan, + struct lttng_ust_ring_buffer *buf, int cpu, struct lttng_ust_shm_handle *handle) { - const struct lttng_ust_lib_ring_buffer_config *config = &chan->backend.config; + const struct lttng_ust_ring_buffer_config *config = &chan->backend.config; if (!strcmp(chan->backend.name, "relay-metadata-mmap")) { DBG("ring buffer %s: %lu records written, " @@ -1756,13 +1758,13 @@ void lib_ring_buffer_print_errors(struct lttng_ust_lib_ring_buffer_channel *chan * active or at buffer finalization (destroy). */ static -void lib_ring_buffer_switch_old_start(struct lttng_ust_lib_ring_buffer *buf, - struct lttng_ust_lib_ring_buffer_channel *chan, +void lib_ring_buffer_switch_old_start(struct lttng_ust_ring_buffer *buf, + struct lttng_ust_ring_buffer_channel *chan, struct switch_offsets *offsets, uint64_t tsc, struct lttng_ust_shm_handle *handle) { - const struct lttng_ust_lib_ring_buffer_config *config = &chan->backend.config; + const struct lttng_ust_ring_buffer_config *config = &chan->backend.config; unsigned long oldidx = subbuf_index(offsets->old, chan); unsigned long commit_count; struct commit_counters_hot *cc_hot; @@ -1797,13 +1799,13 @@ void lib_ring_buffer_switch_old_start(struct lttng_ust_lib_ring_buffer *buf, * subbuffer. */ static -void lib_ring_buffer_switch_old_end(struct lttng_ust_lib_ring_buffer *buf, - struct lttng_ust_lib_ring_buffer_channel *chan, +void lib_ring_buffer_switch_old_end(struct lttng_ust_ring_buffer *buf, + struct lttng_ust_ring_buffer_channel *chan, struct switch_offsets *offsets, uint64_t tsc, struct lttng_ust_shm_handle *handle) { - const struct lttng_ust_lib_ring_buffer_config *config = &chan->backend.config; + const struct lttng_ust_ring_buffer_config *config = &chan->backend.config; unsigned long oldidx = subbuf_index(offsets->old - 1, chan); unsigned long commit_count, padding_size, data_size; struct commit_counters_hot *cc_hot; @@ -1852,13 +1854,13 @@ void lib_ring_buffer_switch_old_end(struct lttng_ust_lib_ring_buffer *buf, * that this code is executed before the deliver of this sub-buffer. */ static -void lib_ring_buffer_switch_new_start(struct lttng_ust_lib_ring_buffer *buf, - struct lttng_ust_lib_ring_buffer_channel *chan, +void lib_ring_buffer_switch_new_start(struct lttng_ust_ring_buffer *buf, + struct lttng_ust_ring_buffer_channel *chan, struct switch_offsets *offsets, uint64_t tsc, struct lttng_ust_shm_handle *handle) { - const struct lttng_ust_lib_ring_buffer_config *config = &chan->backend.config; + const struct lttng_ust_ring_buffer_config *config = &chan->backend.config; unsigned long beginidx = subbuf_index(offsets->begin, chan); unsigned long commit_count; struct commit_counters_hot *cc_hot; @@ -1892,13 +1894,13 @@ void lib_ring_buffer_switch_new_start(struct lttng_ust_lib_ring_buffer *buf, * we are currently doing the space reservation. */ static -void lib_ring_buffer_switch_new_end(struct lttng_ust_lib_ring_buffer *buf, - struct lttng_ust_lib_ring_buffer_channel *chan, +void lib_ring_buffer_switch_new_end(struct lttng_ust_ring_buffer *buf, + struct lttng_ust_ring_buffer_channel *chan, struct switch_offsets *offsets, uint64_t tsc, struct lttng_ust_shm_handle *handle) { - const struct lttng_ust_lib_ring_buffer_config *config = &chan->backend.config; + const struct lttng_ust_ring_buffer_config *config = &chan->backend.config; unsigned long endidx, data_size; uint64_t *ts_end; @@ -1927,13 +1929,13 @@ void lib_ring_buffer_switch_new_end(struct lttng_ust_lib_ring_buffer *buf, */ static int lib_ring_buffer_try_switch_slow(enum switch_mode mode, - struct lttng_ust_lib_ring_buffer *buf, - struct lttng_ust_lib_ring_buffer_channel *chan, + struct lttng_ust_ring_buffer *buf, + struct lttng_ust_ring_buffer_channel *chan, struct switch_offsets *offsets, uint64_t *tsc, struct lttng_ust_shm_handle *handle) { - const struct lttng_ust_lib_ring_buffer_config *config = &chan->backend.config; + const struct lttng_ust_ring_buffer_config *config = &chan->backend.config; unsigned long off, reserve_commit_diff; offsets->begin = v_read(config, &buf->offset); @@ -2041,11 +2043,11 @@ int lib_ring_buffer_try_switch_slow(enum switch_mode mode, * RING_BUFFER_SYNC_GLOBAL ring buffers, this function can be called * from any CPU. */ -void lib_ring_buffer_switch_slow(struct lttng_ust_lib_ring_buffer *buf, enum switch_mode mode, +void lib_ring_buffer_switch_slow(struct lttng_ust_ring_buffer *buf, enum switch_mode mode, struct lttng_ust_shm_handle *handle) { - struct lttng_ust_lib_ring_buffer_channel *chan; - const struct lttng_ust_lib_ring_buffer_config *config; + struct lttng_ust_ring_buffer_channel *chan; + const struct lttng_ust_ring_buffer_config *config; struct switch_offsets offsets; unsigned long oldidx; uint64_t tsc; @@ -2122,14 +2124,14 @@ bool handle_blocking_retry(int *timeout_left_ms) * -EIO if data cannot be written into the buffer for any other reason. */ static -int lib_ring_buffer_try_reserve_slow(struct lttng_ust_lib_ring_buffer *buf, - struct lttng_ust_lib_ring_buffer_channel *chan, +int lib_ring_buffer_try_reserve_slow(struct lttng_ust_ring_buffer *buf, + struct lttng_ust_ring_buffer_channel *chan, struct switch_offsets *offsets, - struct lttng_ust_lib_ring_buffer_ctx *ctx, + struct lttng_ust_ring_buffer_ctx *ctx, void *client_ctx) { - struct lttng_ust_lib_ring_buffer_ctx_private *ctx_private = ctx->priv; - const struct lttng_ust_lib_ring_buffer_config *config = &chan->backend.config; + struct lttng_ust_ring_buffer_ctx_private *ctx_private = ctx->priv; + const struct lttng_ust_ring_buffer_config *config = &chan->backend.config; struct lttng_ust_shm_handle *handle = chan->handle; unsigned long reserve_commit_diff, offset_cmp; int timeout_left_ms = lttng_ust_ringbuffer_get_timeout(chan); @@ -2157,7 +2159,7 @@ retry: &offsets->pre_header_padding, ctx, client_ctx); offsets->size += - lttng_ust_lib_ring_buffer_align(offsets->begin + offsets->size, + lttng_ust_ring_buffer_align(offsets->begin + offsets->size, ctx->largest_align) + ctx->data_size; if (caa_unlikely(subbuf_offset(offsets->begin, chan) + @@ -2263,7 +2265,7 @@ retry: &offsets->pre_header_padding, ctx, client_ctx); offsets->size += - lttng_ust_lib_ring_buffer_align(offsets->begin + offsets->size, + lttng_ust_ring_buffer_align(offsets->begin + offsets->size, ctx->largest_align) + ctx->data_size; if (caa_unlikely(subbuf_offset(offsets->begin, chan) @@ -2315,14 +2317,14 @@ retry: * -EIO for other errors, else returns 0. * It will take care of sub-buffer switching. */ -int lib_ring_buffer_reserve_slow(struct lttng_ust_lib_ring_buffer_ctx *ctx, +int lib_ring_buffer_reserve_slow(struct lttng_ust_ring_buffer_ctx *ctx, void *client_ctx) { - struct lttng_ust_lib_ring_buffer_ctx_private *ctx_private = ctx->priv; - struct lttng_ust_lib_ring_buffer_channel *chan = ctx_private->chan; + struct lttng_ust_ring_buffer_ctx_private *ctx_private = ctx->priv; + struct lttng_ust_ring_buffer_channel *chan = ctx_private->chan; struct lttng_ust_shm_handle *handle = chan->handle; - const struct lttng_ust_lib_ring_buffer_config *config = &chan->backend.config; - struct lttng_ust_lib_ring_buffer *buf; + const struct lttng_ust_ring_buffer_config *config = &chan->backend.config; + struct lttng_ust_ring_buffer *buf; struct switch_offsets offsets; int ret; @@ -2391,8 +2393,8 @@ int lib_ring_buffer_reserve_slow(struct lttng_ust_lib_ring_buffer_ctx *ctx, } static -void lib_ring_buffer_vmcore_check_deliver(const struct lttng_ust_lib_ring_buffer_config *config, - struct lttng_ust_lib_ring_buffer *buf, +void lib_ring_buffer_vmcore_check_deliver(const struct lttng_ust_ring_buffer_config *config, + struct lttng_ust_ring_buffer *buf, unsigned long commit_count, unsigned long idx, struct lttng_ust_shm_handle *handle) @@ -2413,8 +2415,8 @@ void lib_ring_buffer_vmcore_check_deliver(const struct lttng_ust_lib_ring_buffer */ #ifdef LTTNG_RING_BUFFER_COUNT_EVENTS static -void deliver_count_events(const struct lttng_ust_lib_ring_buffer_config *config, - struct lttng_ust_lib_ring_buffer *buf, +void deliver_count_events(const struct lttng_ust_ring_buffer_config *config, + struct lttng_ust_ring_buffer *buf, unsigned long idx, struct lttng_ust_shm_handle *handle) { @@ -2428,17 +2430,17 @@ void deliver_count_events(const struct lttng_ust_lib_ring_buffer_config *config, #else /* LTTNG_RING_BUFFER_COUNT_EVENTS */ static void deliver_count_events( - const struct lttng_ust_lib_ring_buffer_config *config __attribute__((unused)), - struct lttng_ust_lib_ring_buffer *buf __attribute__((unused)), + const struct lttng_ust_ring_buffer_config *config __attribute__((unused)), + struct lttng_ust_ring_buffer *buf __attribute__((unused)), unsigned long idx __attribute__((unused)), struct lttng_ust_shm_handle *handle __attribute__((unused))) { } #endif /* #else LTTNG_RING_BUFFER_COUNT_EVENTS */ -void lib_ring_buffer_check_deliver_slow(const struct lttng_ust_lib_ring_buffer_config *config, - struct lttng_ust_lib_ring_buffer *buf, - struct lttng_ust_lib_ring_buffer_channel *chan, +void lib_ring_buffer_check_deliver_slow(const struct lttng_ust_ring_buffer_config *config, + struct lttng_ust_ring_buffer *buf, + struct lttng_ust_ring_buffer_channel *chan, unsigned long offset, unsigned long commit_count, unsigned long idx, @@ -2556,9 +2558,9 @@ void lib_ring_buffer_check_deliver_slow(const struct lttng_ust_lib_ring_buffer_c } /* - * Force a read (imply TLS fixup for dlopen) of TLS variables. + * Force a read (imply TLS allocation for dlopen) of TLS variables. */ -void lttng_fixup_ringbuffer_tls(void) +void lttng_ringbuffer_alloc_tls(void) { asm volatile ("" : : "m" (URCU_TLS(lib_ring_buffer_nesting))); }