syscall.sh / nios2 / perf_event_open
perf_event_open
set up performance monitoring
sys_perf_event_open(struct perf_event_attr *attr_uptr, pid_t pid, int cpu, int group_fd, unsigned long flags)| number | 241 (0xf1) |
|---|---|
| abi | common |
| entry point | sys_perf_event_open |
| since | Linux 3.19 |
| man page | perf_event_open(2) |
| source | elixir.bootlin.com |
Registers
| register | value |
|---|---|
r2 | 241, the syscall number |
r4 | struct perf_event_attr *attr_uptr |
r5 | pid_t pid |
r6 | int cpu |
r7 | int group_fd |
r8 | unsigned long flags |
r2 | the return value |
Then run trap to enter the kernel.
Same syscall on other architectures
- x64 298
- x86 336
- arm64 241
- arm 364
- riscv64 241
- x32 1073742122
- loongarch64 241
- ppc64 319
- ppc 319
- s390x 331
- mips64 5292
- mipsn32 6296
- mipso32 4333
- alpha 493
- arc 241
- csky 241
- hexagon 241
- m68k 332
- microblaze 366
- openrisc 241
- parisc 318
- sh 336
- sparc 327
- sparc64 327
- xtensa 327
Get this as JSON: https://api.syscall.sh/v2/syscalls/nios2/perf_event_open