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lib: sbi: Optimize sbi_ipi
The original sbi_ipi will be processed by hart by hart, after optimization, send ipi first and finally wait together. Signed-off-by: Xiang W <wxjstz@126.com> Reviewed-by: Anup Patel <anup@brainfault.org> Tested-by: Anup Patel <anup@brainfault.org>
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1 changed files with 32 additions and 2 deletions
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@ -69,6 +69,18 @@ static int sbi_ipi_send(struct sbi_scratch *scratch, u32 remote_hartid,
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sbi_pmu_ctr_incr_fw(SBI_PMU_FW_IPI_SENT);
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return 0;
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}
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static int sbi_ipi_sync(struct sbi_scratch *scratch, u32 event)
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{
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const struct sbi_ipi_event_ops *ipi_ops;
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if ((SBI_IPI_EVENT_MAX <= event) ||
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!ipi_ops_array[event])
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return SBI_EINVAL;
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ipi_ops = ipi_ops_array[event];
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if (ipi_ops->sync)
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ipi_ops->sync(scratch);
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@ -83,7 +95,7 @@ static int sbi_ipi_send(struct sbi_scratch *scratch, u32 remote_hartid,
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int sbi_ipi_send_many(ulong hmask, ulong hbase, u32 event, void *data)
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{
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int rc;
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ulong i, m;
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ulong i, m, n;
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struct sbi_domain *dom = sbi_domain_thishart_ptr();
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struct sbi_scratch *scratch = sbi_scratch_thishart_ptr();
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@ -92,22 +104,40 @@ int sbi_ipi_send_many(ulong hmask, ulong hbase, u32 event, void *data)
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if (rc)
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return rc;
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m &= hmask;
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n = m;
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/* Send IPIs */
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for (i = hbase; m; i++, m >>= 1) {
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if (m & 1UL)
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sbi_ipi_send(scratch, i, event, data);
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}
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/* Sync IPIs */
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m = n;
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for (i = hbase; m; i++, m >>= 1) {
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if (m & 1UL)
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sbi_ipi_sync(scratch, event);
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}
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} else {
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/* Send IPIs */
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hbase = 0;
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while (!sbi_hsm_hart_interruptible_mask(dom, hbase, &m)) {
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/* Send IPIs */
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for (i = hbase; m; i++, m >>= 1) {
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if (m & 1UL)
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sbi_ipi_send(scratch, i, event, data);
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}
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hbase += BITS_PER_LONG;
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}
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/* Sync IPIs */
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hbase = 0;
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while (!sbi_hsm_hart_interruptible_mask(dom, hbase, &m)) {
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for (i = hbase; m; i++, m >>= 1) {
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if (m & 1UL)
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sbi_ipi_sync(scratch, event);
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}
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hbase += BITS_PER_LONG;
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}
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}
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return 0;
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