diff options
Diffstat (limited to 'src/tracefs-record.c')
| -rw-r--r-- | src/tracefs-record.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/tracefs-record.c b/src/tracefs-record.c index b078c86..8750fe7 100644 --- a/src/tracefs-record.c +++ b/src/tracefs-record.c @@ -319,6 +319,7 @@ int tracefs_cpu_read(struct tracefs_cpu *tcpu, void *buffer, bool nonblock) static int init_splice(struct tracefs_cpu *tcpu) { + char *buf; int ret; if (tcpu->splice_pipe[0] >= 0) @@ -328,6 +329,12 @@ static int init_splice(struct tracefs_cpu *tcpu) if (ret < 0) return ret; + if (str_read_file("/proc/sys/fs/pipe-max-size", &buf, false)) { + int size = atoi(buf); + fcntl(tcpu->splice_pipe[0], F_SETPIPE_SZ, &size); + free(buf); + } + ret = fcntl(tcpu->splice_pipe[0], F_GETPIPE_SZ, &tcpu->pipe_size); /* * F_GETPIPE_SZ was introduced in 2.6.35, ftrace was introduced |