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perf scripts: Add configurable sorting option to powerpc-hcalls

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The powerpc-hcalls.py script currently prints hypercall
statistics in a fixed sort order based on the number of
hcall occurrences, making it difficult to analyze hcalls
from different execution characteristics.

Add support for runtime-configurable sorting so users
can order hypercall statistics by count, minimum
latency, maximum latency, or average latency using
a --sort option.

Parse arguments through sys.argv to support perf script
argument passing semantics.

Example:

perf record -a -e powerpc* sleep 10

perf script -s ./powerpc-hcalls.py -i ./perf.data -- --sort=max

SORT KEY = max
hcall                            count   min(ns)   max(ns)   avg(ns)

H_SEND_LOGICAL_LAN                  47      7380     40148      8739
H_VIO_SIGNAL                       706       880     17454      1911
H_RANDOM                             1     15176     15176     15176
H_PUT_TCE_INDIRECT                   4      3032     10444      4956
H_ADD_LOGICAL_LAN_BUFFER           363      1250      8716      1534
H_SEND_CRQ                           8      2086      6846      3044
H_PUT_TCE                            9      1284      4932      2646
H_STUFF_TCE                         13      1620      3962      2358

This makes it easier to identify frequently occurring
or high-latency hypercalls depending on the analysis
being performed.

Signed-off-by: Shivani Nittor <shivani@linux.ibm.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
This commit is contained in:
Shivani Nittor 2026-06-27 14:33:33 +05:30 committed by Namhyung Kim
parent 17f0514671
commit 0cf831b7a4
1 changed files with 45 additions and 1 deletions
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46
tools/perf/scripts/python/powerpc-hcalls.py
View File

@ -25,6 +25,7 @@ from Util import *
# } ...
# }
output = {}
sort_key = 'count'
# d_enter: {
# cpu: {
@ -247,10 +248,53 @@ def hcall_table_lookup(opcode):
print_ptrn = '%-28s%10s%10s%10s%10s'
def sort_output(opcode):
stats = output[opcode]
if sort_key == 'min':
return stats['min']
if sort_key == 'max':
return stats['max']
if sort_key == 'avg':
return stats['time'] // stats['cnt']
return stats['cnt']
def trace_begin():
global sort_key
valid_sort_keys = ['count', 'min', 'max', 'avg']
i = 1
while i < len(sys.argv):
arg = sys.argv[i]
if arg == '-s' or arg == '--sort':
if i + 1 >= len(sys.argv):
print("Error: -s/--sort requires a sort key argument")
sys.exit(1)
sort_key = sys.argv[i + 1]
i += 2
continue
if arg.startswith('--sort='):
sort_key = arg.split('=', 1)[1]
i += 1
continue
i += 1
if sort_key not in valid_sort_keys:
print(f"Error: Invalid sort key '{sort_key}'. Valid options are: {', '.join(valid_sort_keys)}")
sys.exit(1)
print("SORT KEY =", sort_key)
def trace_end():
print(print_ptrn % ('hcall', 'count', 'min(ns)', 'max(ns)', 'avg(ns)'))
print('-' * 68)
for opcode in output:
for opcode in sorted(output, key = sort_output,
reverse=True):
h_name = hcall_table_lookup(opcode)
time = output[opcode]['time']
cnt = output[opcode]['cnt']