Function report |
Source Code:mm\page-writeback.c |
Create Date:2022-07-28 14:10:09 |
Last Modify:2022-05-23 13:25:58 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:__wb_update_bandwidth
Proto:static void __wb_update_bandwidth(struct dirty_throttle_control *gdtc, struct dirty_throttle_control *mdtc, unsigned long start_time, bool update_ratelimit)
Type:void
Parameter:
Type | Parameter | Name |
---|---|---|
struct dirty_throttle_control * | gdtc | |
struct dirty_throttle_control * | mdtc | |
unsigned long | start_time | |
bool | update_ratelimit |
1352 | elapsed = now - last time write bw is updated |
1356 | lockdep_assert_held( & protects the b_* lists ) |
1361 | If elapsed < Estimate write bandwidth at 200ms intervals. Then Return |
1364 | dirtied = percpu_counter_read( & stat[WB_DIRTIED]) |
1365 | written = percpu_counter_read( & stat[WB_WRITTEN]) |
1371 | If elapsed > HZ && time_before(last time write bw is updated , start_time) Then Go to snapshot |
1374 | If update_ratelimit Then |
1375 | domain_update_bandwidth(gdtc, now) |
1387 | wb_update_write_bandwidth(wb, elapsed, written) |
1389 | snapshot : |
1390 | dirtied_stamp = dirtied |
1392 | last time write bw is updated = now |
Name | Describe |
---|---|
wb_update_bandwidth | |
balance_dirty_pages | alance_dirty_pages() must be called by processes which are generating dirty* data |
Source code conversion tool public plug-in interface | X |
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