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gpu: nvgpu: posix: cond: add fault injection to timeout

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Add fault injection to the function nvgpu_cond_timedwait(). This allows
unit tests to test the timeout case when testing code that uses
NVGPU_COND_WAIT().

JIRA NVGPU-2224

Change-Id: I90656f29146f90afc08c6d5e0500e68f01a92043
Signed-off-by: Philip Elcan <pelcan@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2258705
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>
This commit is contained in:
Philip Elcan
2019-12-09 13:36:22 -05:00
committed by Alex Waterman
parent dcd1e423b4
commit b5617a61d9
2 changed files with 8 additions and 0 deletions
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1
drivers/gpu/nvgpu/libnvgpu-drv_safe.export
View File

@@ -234,6 +234,7 @@ nvgpu_cg_slcg_ce2_load_enable
nvgpu_cg_init_gr_load_gating_prod
nvgpu_cg_elcg_enable_no_wait
nvgpu_cg_elcg_disable_no_wait
nvgpu_cond_get_fault_injection
nvgpu_current_pid
nvgpu_current_tid
nvgpu_engine_cleanup_sw

7
drivers/gpu/nvgpu/os/posix/cond.c
View File

@@ -160,6 +160,13 @@ int nvgpu_cond_timedwait(struct nvgpu_cond *c, unsigned int *ms)
s64 t_start_ns, t_ns;
struct timespec ts;
#ifdef NVGPU_UNITTEST_FAULT_INJECTION_ENABLEMENT
if (nvgpu_posix_fault_injection_handle_call(
nvgpu_cond_get_fault_injection())) {
return -ETIMEDOUT;
}
#endif
if (*ms == NVGPU_COND_WAIT_TIMEOUT_MAX_MS) {
return pthread_cond_wait(&c->cond, &c->mutex.lock.mutex);
}