On 4/3/19 3:02 AM, Naoya Horiguchi wrote:
> turbostat could be terminated by general protection fault on some latest
> hardwares which (for example) support 9 levels of C-states and show 18
> "tADDED" lines. That bloats the total output and finally causes buffer
> overrun. So let's extend the buffer to avoid this.
>
> This patch also removes duplicated "pc10:" line to reduce buffer usage.
>
> Signed-off-by: Naoya Horiguchi <n-horigu...@ah.jp.nec.com>
> ---
> tools/power/x86/turbostat/turbostat.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git
> v5.1-rc3-mmotm-2019-04-02-17-16/tools/power/x86/turbostat/turbostat.c
> v5.1-rc3-mmotm-2019-04-02-17-16_patched/tools/power/x86/turbostat/turbostat.c
> index c7727be..17b1f544 100644
> --- v5.1-rc3-mmotm-2019-04-02-17-16/tools/power/x86/turbostat/turbostat.c
> +++
> v5.1-rc3-mmotm-2019-04-02-17-16_patched/tools/power/x86/turbostat/turbostat.c
> @@ -861,7 +861,6 @@ int dump_counters(struct thread_data *t, struct core_data
> *c,
> outp += sprintf(outp, "pc8: %016llX\n", p->pc8);
> outp += sprintf(outp, "pc9: %016llX\n", p->pc9);
> outp += sprintf(outp, "pc10: %016llX\n", p->pc10);
> - outp += sprintf(outp, "pc10: %016llX\n", p->pc10);
> outp += sprintf(outp, "cpu_lpi: %016llX\n", p->cpu_lpi);
> outp += sprintf(outp, "sys_lpi: %016llX\n", p->sys_lpi);
> outp += sprintf(outp, "Joules PKG: %0X\n", p->energy_pkg);
> @@ -5135,7 +5134,7 @@ int initialize_counters(int cpu_id)
>
> void allocate_output_buffer()
> {
> - output_buffer = calloc(1, (1 + topo.num_cpus) * 1024);
> + output_buffer = calloc(1, (1 + topo.num_cpus) * 2048);
Is there a better way to calculate the size of that buffer other than a magic
number?
P.
> outp = output_buffer;
> if (outp == NULL)
> err(-1, "calloc output buffer");
>
