diff options
Diffstat (limited to 'tools/tracing/rtla/src/common.c')
| -rw-r--r-- | tools/tracing/rtla/src/common.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/tools/tracing/rtla/src/common.c b/tools/tracing/rtla/src/common.c new file mode 100644 index 000000000000..32a6faffc714 --- /dev/null +++ b/tools/tracing/rtla/src/common.c @@ -0,0 +1,63 @@ +// SPDX-License-Identifier: GPL-2.0 +#define _GNU_SOURCE + +#include <unistd.h> +#include "common.h" + +/* + * common_apply_config - apply common configs to the initialized tool + */ +int +common_apply_config(struct osnoise_tool *tool, struct common_params *params) +{ + int retval, i; + + if (!params->sleep_time) + params->sleep_time = 1; + + retval = osnoise_set_cpus(tool->context, params->cpus ? params->cpus : "all"); + if (retval) { + err_msg("Failed to apply CPUs config\n"); + goto out_err; + } + + if (!params->cpus) { + for (i = 0; i < sysconf(_SC_NPROCESSORS_CONF); i++) + CPU_SET(i, ¶ms->monitored_cpus); + } + + if (params->hk_cpus) { + retval = sched_setaffinity(getpid(), sizeof(params->hk_cpu_set), + ¶ms->hk_cpu_set); + if (retval == -1) { + err_msg("Failed to set rtla to the house keeping CPUs\n"); + goto out_err; + } + } else if (params->cpus) { + /* + * Even if the user do not set a house-keeping CPU, try to + * move rtla to a CPU set different to the one where the user + * set the workload to run. + * + * No need to check results as this is an automatic attempt. + */ + auto_house_keeping(¶ms->monitored_cpus); + } + + /* + * Set workload according to type of thread if the kernel supports it. + * On kernels without support, user threads will have already failed + * on missing fd, and kernel threads do not need it. + */ + retval = osnoise_set_workload(tool->context, params->kernel_workload); + if (retval < -1) { + err_msg("Failed to set OSNOISE_WORKLOAD option\n"); + goto out_err; + } + + return 0; + +out_err: + return -1; +} + |