diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2025-12-15 17:52:09 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2026-01-22 11:11:17 +0100 |
| commit | b5b8282441bc4f8f1ff505e19d566dbd7b805761 (patch) | |
| tree | 85f89ddbbea6ad54775432965bed74eb5ed4f59d | |
| parent | f8380f976804533df4c6c3d3a0b2cd03c2d262bc (diff) | |
rseq: Add statistics for time slice extensions
Extend the quick statistics with time slice specific fields.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20251215155708.795202254@linutronix.de
| -rw-r--r-- | include/linux/rseq_entry.h | 5 | ||||
| -rw-r--r-- | kernel/rseq.c | 14 |
2 files changed, 19 insertions, 0 deletions
diff --git a/include/linux/rseq_entry.h b/include/linux/rseq_entry.h index d0ec4714ffd6..54d8e338b26e 100644 --- a/include/linux/rseq_entry.h +++ b/include/linux/rseq_entry.h @@ -15,6 +15,11 @@ struct rseq_stats { unsigned long cs; unsigned long clear; unsigned long fixup; + unsigned long s_granted; + unsigned long s_expired; + unsigned long s_revoked; + unsigned long s_yielded; + unsigned long s_aborted; }; DECLARE_PER_CPU(struct rseq_stats, rseq_stats); diff --git a/kernel/rseq.c b/kernel/rseq.c index bf75268580ef..415d75b6df2c 100644 --- a/kernel/rseq.c +++ b/kernel/rseq.c @@ -138,6 +138,13 @@ static int rseq_stats_show(struct seq_file *m, void *p) stats.cs += data_race(per_cpu(rseq_stats.cs, cpu)); stats.clear += data_race(per_cpu(rseq_stats.clear, cpu)); stats.fixup += data_race(per_cpu(rseq_stats.fixup, cpu)); + if (IS_ENABLED(CONFIG_RSEQ_SLICE_EXTENSION)) { + stats.s_granted += data_race(per_cpu(rseq_stats.s_granted, cpu)); + stats.s_expired += data_race(per_cpu(rseq_stats.s_expired, cpu)); + stats.s_revoked += data_race(per_cpu(rseq_stats.s_revoked, cpu)); + stats.s_yielded += data_race(per_cpu(rseq_stats.s_yielded, cpu)); + stats.s_aborted += data_race(per_cpu(rseq_stats.s_aborted, cpu)); + } } seq_printf(m, "exit: %16lu\n", stats.exit); @@ -148,6 +155,13 @@ static int rseq_stats_show(struct seq_file *m, void *p) seq_printf(m, "cs: %16lu\n", stats.cs); seq_printf(m, "clear: %16lu\n", stats.clear); seq_printf(m, "fixup: %16lu\n", stats.fixup); + if (IS_ENABLED(CONFIG_RSEQ_SLICE_EXTENSION)) { + seq_printf(m, "sgrant: %16lu\n", stats.s_granted); + seq_printf(m, "sexpir: %16lu\n", stats.s_expired); + seq_printf(m, "srevok: %16lu\n", stats.s_revoked); + seq_printf(m, "syield: %16lu\n", stats.s_yielded); + seq_printf(m, "sabort: %16lu\n", stats.s_aborted); + } return 0; } |