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c410ab5655
This adds a fault injection module to the POSIX build that can be added to modules (for example k*alloc) then exercised in unit tests. The unit tests can then verify that the driver units handle errors from the modules. JIRA NVGPU-1235 Change-Id: I9d9e443608e3d2026e165a62f7a7f011df96fd54 Signed-off-by: Philip Elcan <pelcan@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1927455 GVS: Gerrit_Virtual_Submit Reviewed-by: Alex Waterman <alexw@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
68 lines
2.0 KiB
C
68 lines
2.0 KiB
C
/*
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* Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <stdlib.h>
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#include <stdbool.h>
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#include <nvgpu/posix/posix-fault-injection.h>
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void nvgpu_posix_init_fault_injection(struct nvgpu_posix_fault_inj *fi)
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{
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fi->enabled = false;
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fi->counter = 0U;
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}
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void nvgpu_posix_enable_fault_injection(struct nvgpu_posix_fault_inj *fi,
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bool enable, unsigned int number)
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{
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if (number == 0U) {
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fi->enabled = enable;
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fi->counter = 0U;
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} else {
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fi->enabled = !enable;
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fi->counter = number;
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}
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}
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bool nvgpu_posix_is_fault_injection_triggered(struct nvgpu_posix_fault_inj *fi)
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{
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return fi->enabled;
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}
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/*
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* Return status of fault injection.
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* Decrement fault injection count for each call.
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*/
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bool nvgpu_posix_fault_injection_handle_call(struct nvgpu_posix_fault_inj *fi)
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{
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bool current_state = fi->enabled;
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if (fi->counter > 0U) {
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fi->counter--;
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if (fi->counter == 0U) {
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/* for next time */
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fi->enabled = !fi->enabled;
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}
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}
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return current_state;
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}
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