diff options
| author |   Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> | 2022-11-22 12:10:53 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2022-11-30 21:46:47 +1100 |
| commit | 616ad3f4aac287c48b66c92cb777395b4465ed4f (patch) | |
| tree | e287fbb5aad6fda48a05924afd9c6c83201336de /tools/testing/selftests/powerpc | |
| parent | selftests/powerpc: Move perror closer to its use (diff) | |
| download | wireguard-linux-616ad3f4aac287c48b66c92cb777395b4465ed4f.tar.xz wireguard-linux-616ad3f4aac287c48b66c92cb777395b4465ed4f.zip | |
selftests/powerpc: Bump up rlimit for perf-hwbreak test
The systemwide perf hardware breakpoint test tries to open a perf event
on each cpu. On large systems, we run out of file descriptors and fail
the test. Instead, have the test set the file descriptor limit to an
arbitraty high value.
Reported-by: Rohan Deshpande <rohan_d@linux.vnet.ibm.com>
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/187fed5843cecc1e5066677b6296ee88337d7bef.1669096083.git.naveen.n.rao@linux.vnet.ibm.com
Diffstat (limited to 'tools/testing/selftests/powerpc')
| -rw-r--r-- | tools/testing/selftests/powerpc/ptrace/perf-hwbreak.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/tools/testing/selftests/powerpc/ptrace/perf-hwbreak.c b/tools/testing/selftests/powerpc/ptrace/perf-hwbreak.c index ea5e14ecbf30..866e5be48ee3 100644 --- a/tools/testing/selftests/powerpc/ptrace/perf-hwbreak.c +++ b/tools/testing/selftests/powerpc/ptrace/perf-hwbreak.c @@ -26,6 +26,7 @@ #include <sys/ioctl.h> #include <sys/wait.h> #include <sys/ptrace.h> +#include <sys/resource.h> #include <sys/sysinfo.h> #include <asm/ptrace.h> #include <elf.h> @@ -140,8 +141,19 @@ static void disable_fds(int *fd, int n) static int perf_systemwide_event_open(int *fd, __u32 type, __u64 addr, __u64 len) { + struct rlimit rlim; int i = 0; + if (getrlimit(RLIMIT_NOFILE, &rlim)) { + perror("getrlimit"); + return -1; + } + rlim.rlim_cur = 65536; + if (setrlimit(RLIMIT_NOFILE, &rlim)) { + perror("setrlimit"); + return -1; + } + /* Assume online processors are 0 to nprocs for simplisity */ for (i = 0; i < nprocs; i++) { fd[i] = perf_cpu_event_open(i, type, addr, len); |