diff options
| author |   Oded Gabbay <oded.gabbay@gmail.com> | 2014-12-24 13:30:52 +0200 |
|---|---|---|
| committer | Oded Gabbay <oded.gabbay@gmail.com> | 2015-05-19 13:02:28 +0300 |
| commit | 81663016dbfd53e29d1b5c5ddbc9b12ae1d66474 (patch) | |
| tree | 337823c18adb9dac0f812b4e76eb2ed9747c4c71 | |
| parent | drm/amdkfd: Add bad opcode exception handling (diff) | |
| download | linux-dev-81663016dbfd53e29d1b5c5ddbc9b12ae1d66474.tar.xz linux-dev-81663016dbfd53e29d1b5c5ddbc9b12ae1d66474.zip | |
drm/amdkfd: Add module parameter of send_sigterm
This patch adds a new kernel module parameter to amdkfd,
called send_sigterm.
This parameter specifies whether amdkfd should send the
SIGTERM signal to an HSA process, when the following conditions
occur:
1. The GPU triggers an exception regarding a kernel that was
issued by this process.
2. The HSA process isn't waiting on an event that handles
this exception.
The default behavior is not to send a SIGTERM and suffice
with a dmesg error print.
Reviewed-by: Ben Goz <ben.goz@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_events.c | 12 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_module.c | 5 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_priv.h | 6 |
3 files changed, 20 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_events.c b/drivers/gpu/drm/amd/amdkfd/kfd_events.c index 5c3a81e667a8..3cb37d220f60 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_events.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_events.c @@ -872,10 +872,16 @@ static void lookup_events_by_type_and_signal(struct kfd_process *p, /* Send SIGTERM no event of type "type" has been found*/ if (send_signal) { - dev_warn(kfd_device, - "Sending SIGTERM to HSA Process with PID %d ", + if (send_sigterm) { + dev_warn(kfd_device, + "Sending SIGTERM to HSA Process with PID %d ", + p->lead_thread->pid); + send_sig(SIGTERM, p->lead_thread, 0); + } else { + dev_err(kfd_device, + "HSA Process (PID %d) got unhandled exception", p->lead_thread->pid); - send_sig(SIGTERM, p->lead_thread, 0); + } } } diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_module.c b/drivers/gpu/drm/amd/amdkfd/kfd_module.c index 4e0a68f13a77..e4fc96ec4073 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_module.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_module.c @@ -54,6 +54,11 @@ module_param(max_num_of_queues_per_device, int, 0444); MODULE_PARM_DESC(max_num_of_queues_per_device, "Maximum number of supported queues per device (1 = Minimum, 4096 = default)"); +int send_sigterm; +module_param(send_sigterm, int, 0444); +MODULE_PARM_DESC(send_sigterm, + "Send sigterm to HSA process on unhandled exception (0 = disable, 1 = enable)"); + bool kgd2kfd_init(unsigned interface_version, const struct kgd2kfd_calls **g2f) { /* diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h index 9383494b429e..b6f838f56589 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h +++ b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h @@ -74,6 +74,12 @@ extern int max_num_of_queues_per_device; /* Kernel module parameter to specify the scheduling policy */ extern int sched_policy; +/* + * Kernel module parameter to specify whether to send sigterm to HSA process on + * unhandled exception + */ +extern int send_sigterm; + /** * enum kfd_sched_policy * |