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78 lines
1.6 KiB
78 lines
1.6 KiB
#!/bin/sh |
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# SPDX-License-Identifier: GPL-2.0 |
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# description: test for the preemptirqsoff tracer |
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# requires: preemptoff:tracer irqsoff:tracer |
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MOD=preemptirq_delay_test |
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fail() { |
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reset_tracer |
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rmmod $MOD || true |
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exit_fail |
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} |
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unsup() { #msg |
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reset_tracer |
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rmmod $MOD || true |
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echo $1 |
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exit_unsupported |
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} |
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unres() { #msg |
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reset_tracer |
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rmmod $MOD || true |
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echo $1 |
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exit_unresolved |
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} |
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modprobe $MOD || unres "$MOD module not available" |
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rmmod $MOD |
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reset_tracer |
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# Simulate preemptoff section for half a second couple of times |
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echo preemptoff > current_tracer |
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sleep 1 |
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modprobe $MOD test_mode=preempt delay=500000 || fail |
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rmmod $MOD || fail |
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modprobe $MOD test_mode=preempt delay=500000 || fail |
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rmmod $MOD || fail |
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modprobe $MOD test_mode=preempt delay=500000 || fail |
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rmmod $MOD || fail |
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cat trace |
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# Confirm which tracer |
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grep -q "tracer: preemptoff" trace || fail |
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# Check the end of the section |
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egrep -q "5.....us : <stack trace>" trace || fail |
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# Check for 500ms of latency |
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egrep -q "latency: 5..... us" trace || fail |
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reset_tracer |
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# Simulate irqsoff section for half a second couple of times |
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echo irqsoff > current_tracer |
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sleep 1 |
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modprobe $MOD test_mode=irq delay=500000 || fail |
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rmmod $MOD || fail |
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modprobe $MOD test_mode=irq delay=500000 || fail |
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rmmod $MOD || fail |
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modprobe $MOD test_mode=irq delay=500000 || fail |
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rmmod $MOD || fail |
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cat trace |
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# Confirm which tracer |
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grep -q "tracer: irqsoff" trace || fail |
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# Check the end of the section |
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egrep -q "5.....us : <stack trace>" trace || fail |
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# Check for 500ms of latency |
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egrep -q "latency: 5..... us" trace || fail |
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reset_tracer |
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exit 0
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