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957d194163
Command 'perf bench syscall fork -l 100000' offers option -l to run for
a specified number of iterations. However this option is not always
observed. The number is silently limited to 10000 iterations as can be
seen:
Output before:
# perf bench syscall fork -l 100000
# Running 'syscall/fork' benchmark:
# Executed 10,000 fork() calls
Total time: 23.388 [sec]
2338.809800 usecs/op
427 ops/sec
#
When explicitly specified with option -l or --loops, also observe
higher number of iterations:
Output after:
# perf bench syscall fork -l 100000
# Running 'syscall/fork' benchmark:
# Executed 100,000 fork() calls
Total time: 716.982 [sec]
7169.829510 usecs/op
139 ops/sec
#
This patch fixes the issue for basic execve fork and getpgid.
Fixes: ece7f7c050 ("perf bench syscall: Add fork syscall benchmark")
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Acked-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Tested-by: Athira Rajeev <atrajeev@linux.ibm.com>
Cc: Tiezhu Yang <yangtiezhu@loongson.cn>
Link: https://lore.kernel.org/r/20250304092349.2618082-1-tmricht@linux.ibm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>