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Subject[PATCH v2 2/6] cpupower: Restore format of frequency-info limit
Date
The intel_pstate kselftest expects that the output of
`cpupower frequency-info -l | tail -1 | awk ' { print $1 } '`
to get frequency limits. This does not work after the following two
changes.

- 562e5f1a3: rework the "cpupower frequency-info" command
(Jacob Tanenbaum) removed parsable limit output
- ce512b840: Do not analyse offlined cpus
(Thomas Renninger) added newline to break limit parsing more

This change preserves human readable output if wanted as well as
parsable output for scripts/tests.

Cc: Thomas Renninger <trenn@suse.com>
Cc: "Shreyas B. Prabhu" <shreyas@linux.vnet.ibm.com>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Cc: linux-pm@vger.kernel.org
Signed-off-by: Stafford Horne <shorne@gmail.com>
---
tools/power/cpupower/utils/cpufreq-info.c | 21 ++++++++++++---------
1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/tools/power/cpupower/utils/cpufreq-info.c b/tools/power/cpupower/utils/cpufreq-info.c
index 590d12a..3e701f0 100644
--- a/tools/power/cpupower/utils/cpufreq-info.c
+++ b/tools/power/cpupower/utils/cpufreq-info.c
@@ -285,20 +285,24 @@ static int get_freq_hardware(unsigned int cpu, unsigned int human)

/* --hwlimits / -l */

-static int get_hardware_limits(unsigned int cpu)
+static int get_hardware_limits(unsigned int cpu, unsigned int human)
{
unsigned long min, max;

- printf(_(" hardware limits: "));
if (cpufreq_get_hardware_limits(cpu, &min, &max)) {
printf(_("Not Available\n"));
return -EINVAL;
}

- print_speed(min);
- printf(" - ");
- print_speed(max);
- printf("\n");
+ if (human) {
+ printf(_(" hardware limits: "));
+ print_speed(min);
+ printf(" - ");
+ print_speed(max);
+ printf("\n");
+ } else {
+ printf("%lu %lu\n", min, max);
+ }
return 0;
}

@@ -456,7 +460,7 @@ static void debug_output_one(unsigned int cpu)
get_related_cpus(cpu);
get_affected_cpus(cpu);
get_latency(cpu, 1);
- get_hardware_limits(cpu);
+ get_hardware_limits(cpu, 1);

freqs = cpufreq_get_available_frequencies(cpu);
if (freqs) {
@@ -622,7 +626,7 @@ int cmd_freq_info(int argc, char **argv)
ret = get_driver(cpu);
break;
case 'l':
- ret = get_hardware_limits(cpu);
+ ret = get_hardware_limits(cpu, human);
break;
case 'w':
ret = get_freq_hardware(cpu, human);
@@ -639,7 +643,6 @@ int cmd_freq_info(int argc, char **argv)
}
if (ret)
return ret;
- printf("\n");
}
return ret;
}
--
2.9.3
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