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timers/migration: Handle capacity in connect tracepoints

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This let tracers know to which hierarchy a CPU belongs to.

Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260423165354.95152-6-frederic@kernel.org
This commit is contained in:
Frederic Weisbecker
2026-04-23 18:53:53 +02:00
committed by Thomas Gleixner
parent 098cbaad8e
commit 5a7dfbcbbd
2 changed files with 16 additions and 12 deletions
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24
include/trace/events/timer_migration.h
View File

@@ -33,15 +33,16 @@ TRACE_EVENT(tmigr_group_set,
TRACE_EVENT(tmigr_connect_child_parent,
TP_PROTO(struct tmigr_group *child),
TP_PROTO(struct tmigr_hierarchy *hier, struct tmigr_group *child),
TP_ARGS(child),
TP_ARGS(hier, child),
TP_STRUCT__entry(
__field( void *, child )
__field( void *, parent )
__field( unsigned int, lvl )
__field( unsigned int, numa_node )
__field( unsigned int, capacity )
__field( unsigned int, num_children )
__field( u32, groupmask )
),
@@ -51,26 +52,28 @@ TRACE_EVENT(tmigr_connect_child_parent,
__entry->parent = child->parent;
__entry->lvl = child->parent->level;
__entry->numa_node = child->parent->numa_node;
__entry->capacity = hier->capacity;
__entry->num_children = child->parent->num_children;
__entry->groupmask = child->groupmask;
),
TP_printk("group=%p groupmask=%0x parent=%p lvl=%d numa=%d num_children=%d",
__entry->child, __entry->groupmask, __entry->parent,
__entry->lvl, __entry->numa_node, __entry->num_children)
TP_printk("group=%p groupmask=%0x parent=%p lvl=%d numa=%d capacity=%d num_children=%d",
__entry->child, __entry->groupmask, __entry->parent, __entry->lvl,
__entry->numa_node, __entry->capacity, __entry->num_children)
);
TRACE_EVENT(tmigr_connect_cpu_parent,
TP_PROTO(struct tmigr_cpu *tmc),
TP_PROTO(struct tmigr_hierarchy *hier, struct tmigr_cpu *tmc),
TP_ARGS(tmc),
TP_ARGS(hier, tmc),
TP_STRUCT__entry(
__field( void *, parent )
__field( unsigned int, cpu )
__field( unsigned int, lvl )
__field( unsigned int, numa_node )
__field( unsigned int, capacity )
__field( unsigned int, num_children )
__field( u32, groupmask )
),
@@ -80,13 +83,14 @@ TRACE_EVENT(tmigr_connect_cpu_parent,
__entry->cpu = tmc->cpuevt.cpu;
__entry->lvl = tmc->tmgroup->level;
__entry->numa_node = tmc->tmgroup->numa_node;
__entry->capacity = hier->capacity;
__entry->num_children = tmc->tmgroup->num_children;
__entry->groupmask = tmc->groupmask;
),
TP_printk("cpu=%d groupmask=%0x parent=%p lvl=%d numa=%d num_children=%d",
__entry->cpu, __entry->groupmask, __entry->parent,
__entry->lvl, __entry->numa_node, __entry->num_children)
TP_printk("cpu=%d groupmask=%0x parent=%p lvl=%d numa=%d capacity=%d num_children=%d",
__entry->cpu, __entry->groupmask, __entry->parent, __entry->lvl,
__entry->numa_node, __entry->capacity, __entry->num_children)
);
DECLARE_EVENT_CLASS(tmigr_group_and_cpu,

4
kernel/time/timer_migration.c
View File

@@ -1752,7 +1752,7 @@ static void tmigr_connect_child_parent(struct tmigr_hierarchy *hier, struct tmig
*/
smp_store_release(&child->parent, parent);
trace_tmigr_connect_child_parent(child);
trace_tmigr_connect_child_parent(hier, child);
}
static int tmigr_setup_groups(struct tmigr_hierarchy *hier, unsigned int cpu,
@@ -1827,7 +1827,7 @@ static int tmigr_setup_groups(struct tmigr_hierarchy *hier, unsigned int cpu,
tmigr_init_root(hier, group, activate);
trace_tmigr_connect_cpu_parent(tmc);
trace_tmigr_connect_cpu_parent(hier, tmc);
/* There are no children that need to be connected */
continue;