X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=liblttng-ust%2Flttng-context-cpu-id.c;h=a3252f1575369d99ca01049be48e171917ead6c3;hb=HEAD;hp=83c0626dfab61d5dd7f2996fc3c9026b27b798ec;hpb=c0c0989ab70574e09b2f7e8b48c2da6af664a849;p=lttng-ust.git diff --git a/liblttng-ust/lttng-context-cpu-id.c b/liblttng-ust/lttng-context-cpu-id.c deleted file mode 100644 index 83c0626d..00000000 --- a/liblttng-ust/lttng-context-cpu-id.c +++ /dev/null @@ -1,77 +0,0 @@ -/* - * SPDX-License-Identifier: LGPL-2.1-only - * - * Copyright (C) 2009-2015 Mathieu Desnoyers - * - * LTTng UST CPU id context. - * - * Note: threads can be migrated at any point while executing the - * tracepoint probe. This means the CPU id field (and filter) is only - * statistical. For instance, even though a user might select a - * cpu_id==1 filter, there may be few events recorded into the channel - * appearing from other CPUs, due to migration. - */ - -#define _LGPL_SOURCE -#include -#include -#include -#include -#include -#include -#include "../libringbuffer/getcpu.h" - -static -size_t cpu_id_get_size(struct lttng_ctx_field *field, size_t offset) -{ - size_t size = 0; - - size += lib_ring_buffer_align(offset, lttng_alignof(int)); - size += sizeof(int); - return size; -} - -static -void cpu_id_record(struct lttng_ctx_field *field, - struct lttng_ust_lib_ring_buffer_ctx *ctx, - struct lttng_channel *chan) -{ - int cpu; - - cpu = lttng_ust_get_cpu(); - lib_ring_buffer_align_ctx(ctx, lttng_alignof(cpu)); - chan->ops->event_write(ctx, &cpu, sizeof(cpu)); -} - -static -void cpu_id_get_value(struct lttng_ctx_field *field, - struct lttng_ctx_value *value) -{ - value->u.s64 = lttng_ust_get_cpu(); -} - -int lttng_add_cpu_id_to_ctx(struct lttng_ctx **ctx) -{ - struct lttng_ctx_field *field; - - field = lttng_append_context(ctx); - if (!field) - return -ENOMEM; - if (lttng_find_context(*ctx, "cpu_id")) { - lttng_remove_context_field(ctx, field); - return -EEXIST; - } - field->event_field.name = "cpu_id"; - field->event_field.type.atype = atype_integer; - field->event_field.type.u.integer.size = sizeof(int) * CHAR_BIT; - field->event_field.type.u.integer.alignment = lttng_alignof(int) * CHAR_BIT; - field->event_field.type.u.integer.signedness = lttng_is_signed_type(int); - field->event_field.type.u.integer.reverse_byte_order = 0; - field->event_field.type.u.integer.base = 10; - field->event_field.type.u.integer.encoding = lttng_encode_none; - field->get_size = cpu_id_get_size; - field->record = cpu_id_record; - field->get_value = cpu_id_get_value; - lttng_context_update(*ctx); - return 0; -}