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tools/power turbostat: Add proper re-initialization for perf file descriptors

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Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Patryk Wlazlyn 2024-02-15 12:50:19 +01:00 committed by Len Brown
parent 4a1bb4dad5
commit ebf8449cab
1 changed files with 26 additions and 0 deletions
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26
tools/power/x86/turbostat/turbostat.c
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@ -3669,18 +3669,25 @@ void free_fd_percpu(void)
{
int i;
if (!fd_percpu)
return;
for (i = 0; i < topo.max_cpu_num + 1; ++i) {
if (fd_percpu[i] != 0)
close(fd_percpu[i]);
}
free(fd_percpu);
fd_percpu = NULL;
}
void free_fd_amperf_percpu(void)
{
int i;
if (!fd_amperf_percpu)
return;
for (i = 0; i < topo.max_cpu_num + 1; ++i) {
if (fd_amperf_percpu[i].mperf != 0)
close(fd_amperf_percpu[i].mperf);
@ -3690,6 +3697,21 @@ void free_fd_amperf_percpu(void)
}
free(fd_amperf_percpu);
fd_amperf_percpu = NULL;
}
void free_fd_instr_count_percpu(void)
{
if (!fd_instr_count_percpu)
return;
for (int i = 0; i < topo.max_cpu_num + 1; ++i) {
if (fd_instr_count_percpu[i] != 0)
close(fd_instr_count_percpu[i]);
}
free(fd_instr_count_percpu);
fd_instr_count_percpu = NULL;
}
void free_all_buffers(void)
@ -3733,6 +3755,7 @@ void free_all_buffers(void)
outp = NULL;
free_fd_percpu();
free_fd_instr_count_percpu();
free_fd_amperf_percpu();
free(irq_column_2_cpu);
@ -4067,10 +4090,13 @@ static void update_effective_set(bool startup)
err(1, "%s: cpu str malformat %s\n", PATH_EFFECTIVE_CPUS, cpu_effective_str);
}
void linux_perf_init(void);
void re_initialize(void)
{
free_all_buffers();
setup_all_buffers(false);
linux_perf_init();
fprintf(outf, "turbostat: re-initialized with num_cpus %d, allowed_cpus %d\n", topo.num_cpus,
topo.allowed_cpus);
}