sysconf(_SC_NPROCESSORS_CONF) (via get_nprocs_conf) reflects cpu_possible_mask, which is fixed at boot time, so querying it repeatedly is unnecessary.
Replace multiple calls to sysconf(_SC_NPROCESSORS_CONF) with a single global nr_cpus variable initialized once at startup. v4: - Reorder change of BPF functions - Update unit test v3: - Remove unneeded cpus parameter from timerlat BPF functions as requested by Wander Costa. v2: - Add `#pragma once` in timerlat_u.h to avoid redefinition errors with pre-C23 compilers. Costa Shulyupin (4): tools/rtla: Consolidate nr_cpus usage across all tools tools/rtla: Remove unneeded nr_cpus arguments tools/rtla: Remove unneeded nr_cpus members tools/rtla: Remove unneeded nr_cpus from for_each_monitored_cpu tools/tracing/rtla/src/common.c | 7 ++- tools/tracing/rtla/src/common.h | 4 +- tools/tracing/rtla/src/osnoise_hist.c | 26 ++++----- tools/tracing/rtla/src/osnoise_top.c | 16 ++---- tools/tracing/rtla/src/timerlat.c | 9 ++-- tools/tracing/rtla/src/timerlat_aa.c | 11 ++-- tools/tracing/rtla/src/timerlat_bpf.c | 19 +++---- tools/tracing/rtla/src/timerlat_bpf.h | 12 ++--- tools/tracing/rtla/src/timerlat_hist.c | 62 +++++++++------------- tools/tracing/rtla/src/timerlat_top.c | 47 ++++++---------- tools/tracing/rtla/src/timerlat_u.c | 9 ++-- tools/tracing/rtla/src/timerlat_u.h | 1 + tools/tracing/rtla/src/utils.c | 10 +--- tools/tracing/rtla/tests/unit/unit_tests.c | 44 +++++++-------- 14 files changed, 108 insertions(+), 169 deletions(-) -- 2.53.0
