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lib: sbi_sse: Cache the event's target hart index

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This avoids needing to map the target hartid to a hart index when
enabling or disabling an event, and provides a net code size reduction.

Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Samuel Holland
2024-08-30 08:49:08 -07:00
committed by Anup Patel
parent 15c4e285db
commit d73a4c741c
1 changed files with 4 additions and 1 deletions
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5
lib/sbi/sbi_sse.c
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@@ -108,6 +108,7 @@ assert_field_offset(interrupted.a7, SBI_SSE_ATTR_INTERRUPTED_A7);
struct sbi_sse_event {
struct sbi_sse_event_attrs attrs;
uint32_t event_id;
u32 hartindex;
const struct sbi_sse_cb_ops *cb_ops;
struct sbi_dlist node;
};
@@ -197,7 +198,7 @@ static bool sse_event_is_local(struct sbi_sse_event *e)
*/
static struct sse_hart_state *sse_get_hart_state(struct sbi_sse_event *e)
{
struct sbi_scratch *s = sbi_hartid_to_scratch(e->attrs.hartid);
struct sbi_scratch *s = sbi_hartindex_to_scratch(e->hartindex);
return sse_get_hart_state_ptr(s);
}
@@ -392,6 +393,7 @@ static void sse_event_set_attr(struct sbi_sse_event *e, uint32_t attr_id,
break;
case SBI_SSE_ATTR_PREFERRED_HART:
e->attrs.hartid = val;
e->hartindex = sbi_hartid_to_hartindex(val);
sse_event_invoke_cb(e, set_hartid_cb, val);
break;
@@ -1017,6 +1019,7 @@ int sbi_sse_unregister(uint32_t event_id)
static void sse_event_init(struct sbi_sse_event *e, uint32_t event_id)
{
e->event_id = event_id;
e->hartindex = current_hartindex();
e->attrs.hartid = current_hartid();
/* Declare all events as injectable */
e->attrs.status |= BIT(SBI_SSE_ATTR_STATUS_INJECT_OFFSET);