No architecture terminates the stack trace with ULONG_MAX anymore. The consumer terminates on the first zero entry or at the number of entries, so no functional change.
Remove the cruft. Signed-off-by: Thomas Gleixner <[email protected]> --- fs/proc/base.c | 3 +-- kernel/latencytop.c | 12 ++++++------ 2 files changed, 7 insertions(+), 8 deletions(-) --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -489,10 +489,9 @@ static int lstats_show_proc(struct seq_f lr->count, lr->time, lr->max); for (q = 0; q < LT_BACKTRACEDEPTH; q++) { unsigned long bt = lr->backtrace[q]; + if (!bt) break; - if (bt == ULONG_MAX) - break; seq_printf(m, " %ps", (void *)bt); } seq_putc(m, '\n'); --- a/kernel/latencytop.c +++ b/kernel/latencytop.c @@ -120,8 +120,8 @@ account_global_scheduler_latency(struct break; } - /* 0 and ULONG_MAX entries mean end of backtrace: */ - if (record == 0 || record == ULONG_MAX) + /* 0 entry marks end of backtrace: */ + if (!record) break; } if (same) { @@ -210,8 +210,8 @@ void __sched break; } - /* 0 and ULONG_MAX entries mean end of backtrace: */ - if (record == 0 || record == ULONG_MAX) + /* 0 entry is end of backtrace */ + if (!record) break; } if (same) { @@ -252,10 +252,10 @@ static int lstats_show(struct seq_file * lr->count, lr->time, lr->max); for (q = 0; q < LT_BACKTRACEDEPTH; q++) { unsigned long bt = lr->backtrace[q]; + if (!bt) break; - if (bt == ULONG_MAX) - break; + seq_printf(m, " %ps", (void *)bt); } seq_puts(m, "\n");
