pahole: Introduce --count, just like dd's
$ objcopy -O binary --only-section=.altinstructions ~/git/build/v5.7-rc2+/vmlinux .altinstructions
$ pahole --count 2 alt_instr < .altinstructions
{
.instr_offset = 0xffffffffffe0e690,
.repl_offset = 0x4873,
.cpuid = 0x70,
.instrlen = 0x5,
.replacementlen = 0x5,
.padlen = 0,
},
{
.instr_offset = 0xffffffffffe0e683,
.repl_offset = 0x486b,
.cpuid = 0x129,
.instrlen = 0x5,
.replacementlen = 0x5,
.padlen = 0,
},
$
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
5631fdcea1