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| author |   Georgi Djakov <georgi.djakov@linaro.org> | 2020-07-23 11:37:34 +0300 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-07-23 10:45:24 +0200 |
| commit | 91b44981a2316e7b00574d32dec4fae356444dcf (patch) | |
| tree | 05edccd200f5455399671e9ef7bcc256afe91431 /drivers/interconnect | |
| parent | /dev/mem: Add missing memory barriers for devmem_inode (diff) | |
| download | linux-dev-91b44981a2316e7b00574d32dec4fae356444dcf.tar.xz linux-dev-91b44981a2316e7b00574d32dec4fae356444dcf.zip | |
interconnect: Do not skip aggregation for disabled paths
When an interconnect path is being disabled, currently we don't aggregate
the requests for it afterwards. But the re-aggregation step shouldn't be
skipped, as it may leave the nodes with outdated bandwidth data. This
outdated data may actually keep the path still enabled and prevent the
device from going into lower power states.
Reported-by: Atul Dhudase <adhudase@codeaurora.org>
Fixes: 7d374b209083 ("interconnect: Add helpers for enabling/disabling a path")
Reviewed-by: Sibi Sankar <sibis@codeaurora.org>
Tested-by: Atul Dhudase <adhudase@codeaurora.org>
Reviewed-by: Atul Dhudase <adhudase@codeaurora.org>
Link: https://lore.kernel.org/r/20200721120740.3436-1-georgi.djakov@linaro.org
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Link: https://lore.kernel.org/r/20200723083735.5616-2-georgi.djakov@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/interconnect')
| -rw-r--r-- | drivers/interconnect/core.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c index e5f998744501..9e1ab701785c 100644 --- a/drivers/interconnect/core.c +++ b/drivers/interconnect/core.c @@ -243,6 +243,7 @@ static int aggregate_requests(struct icc_node *node) { struct icc_provider *p = node->provider; struct icc_req *r; + u32 avg_bw, peak_bw; node->avg_bw = 0; node->peak_bw = 0; @@ -251,9 +252,14 @@ static int aggregate_requests(struct icc_node *node) p->pre_aggregate(node); hlist_for_each_entry(r, &node->req_list, req_node) { - if (!r->enabled) - continue; - p->aggregate(node, r->tag, r->avg_bw, r->peak_bw, + if (r->enabled) { + avg_bw = r->avg_bw; + peak_bw = r->peak_bw; + } else { + avg_bw = 0; + peak_bw = 0; + } + p->aggregate(node, r->tag, avg_bw, peak_bw, &node->avg_bw, &node->peak_bw); } |