From c2990a2a582d73562d4dcf2502c39892a19a691d Mon Sep 17 00:00:00 2001 From: Mike Galbraith Date: Sun, 24 May 2009 08:35:49 +0200 Subject: [PATCH] perf top: fix segfault c6eb13 increased stack usage such that perf-top now croaks on startup. Take event_array and mmap_array off the stack to prevent segfault on boxen with smallish ulimit -s setting. Signed-off-by: Mike Galbraith Cc: Peter Zijlstra Cc: Paul Mackerras Cc: Corey Ashford Cc: Arnaldo Carvalho de Melo Cc: John Kacur LKML-Reference: Signed-off-by: Ingo Molnar --- Documentation/perf_counter/builtin-top.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/Documentation/perf_counter/builtin-top.c b/Documentation/perf_counter/builtin-top.c index a3216a6018c4..74021ac90f51 100644 --- a/Documentation/perf_counter/builtin-top.c +++ b/Documentation/perf_counter/builtin-top.c @@ -1035,10 +1035,11 @@ static void mmap_read(struct mmap_data *md) md->prev = old; } +static struct pollfd event_array[MAX_NR_CPUS * MAX_COUNTERS]; +static struct mmap_data mmap_array[MAX_NR_CPUS][MAX_COUNTERS]; + int cmd_top(int argc, char **argv, const char *prefix) { - struct pollfd event_array[MAX_NR_CPUS * MAX_COUNTERS]; - struct mmap_data mmap_array[MAX_NR_CPUS][MAX_COUNTERS]; struct perf_counter_hw_event hw_event; pthread_t thread; int i, counter, group_fd, nr_poll = 0; -- 2.20.1