From d22c3e0088e85be8131f7a9283f759cdbb20726d Mon Sep 17 00:00:00 2001 From: Sven Schnelle Date: Wed, 9 Sep 2026 11:29:53 +0200 Subject: selftests/ftrace: Fix unique symbol check in kprobe_non_uniq_symbol.tc The current regex also matches symbols in modules, which makes the test fail on s390 where name_show is present only once in the kernel, but also multiple times in modules: 000001b1401cdc20 t name_show 000001b0c05e6c40 t name_show [mdev] 000001b0c0495f30 t name_show [i2c_core] Fix this by changing the regular expression to only match the function name. Link: https://lore.kernel.org/all/20260909092954.2200558-1-svens@linux.ibm.com/ Fixes: 03b80ff8023a ("selftests/ftrace: Add new test case which checks non unique symbol") Signed-off-by: Sven Schnelle Reviewed-by: Steven Rostedt Signed-off-by: Masami Hiramatsu (Google) --- drivers/md/dm-stats.h | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 drivers/md/dm-stats.h (limited to 'drivers/md/dm-stats.h') diff --git a/drivers/md/dm-stats.h b/drivers/md/dm-stats.h new file mode 100644 index 000000000..c6728c8b4 --- /dev/null +++ b/drivers/md/dm-stats.h @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef DM_STATS_H +#define DM_STATS_H + +#include +#include +#include + +int dm_statistics_init(void); +void dm_statistics_exit(void); + +struct dm_stats { + struct mutex mutex; + struct list_head list; /* list of struct dm_stat */ + struct dm_stats_last_position __percpu *last; + bool precise_timestamps; +}; + +struct dm_stats_aux { + bool merged; + unsigned long long duration_ns; +}; + +int dm_stats_init(struct dm_stats *st); +void dm_stats_cleanup(struct dm_stats *st); + +struct mapped_device; + +int dm_stats_message(struct mapped_device *md, unsigned int argc, char **argv, + char *result, unsigned int maxlen); + +void dm_stats_account_io(struct dm_stats *stats, unsigned long bi_rw, + sector_t bi_sector, unsigned int bi_sectors, bool end, + unsigned long start_time, + struct dm_stats_aux *aux); + +static inline bool dm_stats_used(struct dm_stats *st) +{ + return !list_empty(&st->list); +} + +static inline void dm_stats_record_start(struct dm_stats *stats, struct dm_stats_aux *aux) +{ + if (unlikely(stats->precise_timestamps)) + aux->duration_ns = ktime_to_ns(ktime_get()); +} + +#endif -- cgit v1.3.1