Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
authored by
Thomas Gleixner
and committed by
Peter Zijlstra
b5b82824
f8380f97
+19
+5
include/linux/rseq_entry.h
+5
include/linux/rseq_entry.h
···
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unsigned long cs;
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unsigned long clear;
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unsigned long fixup;
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+
unsigned long s_granted;
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unsigned long s_expired;
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unsigned long s_revoked;
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unsigned long s_yielded;
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unsigned long s_aborted;
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};
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DECLARE_PER_CPU(struct rseq_stats, rseq_stats);
+14
kernel/rseq.c
+14
kernel/rseq.c
···
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stats.cs += data_race(per_cpu(rseq_stats.cs, cpu));
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stats.clear += data_race(per_cpu(rseq_stats.clear, cpu));
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stats.fixup += data_race(per_cpu(rseq_stats.fixup, cpu));
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if (IS_ENABLED(CONFIG_RSEQ_SLICE_EXTENSION)) {
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stats.s_granted += data_race(per_cpu(rseq_stats.s_granted, cpu));
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stats.s_expired += data_race(per_cpu(rseq_stats.s_expired, cpu));
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stats.s_revoked += data_race(per_cpu(rseq_stats.s_revoked, cpu));
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stats.s_yielded += data_race(per_cpu(rseq_stats.s_yielded, cpu));
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stats.s_aborted += data_race(per_cpu(rseq_stats.s_aborted, cpu));
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}
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}
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seq_printf(m, "exit: %16lu\n", stats.exit);
···
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seq_printf(m, "cs: %16lu\n", stats.cs);
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seq_printf(m, "clear: %16lu\n", stats.clear);
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seq_printf(m, "fixup: %16lu\n", stats.fixup);
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if (IS_ENABLED(CONFIG_RSEQ_SLICE_EXTENSION)) {
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seq_printf(m, "sgrant: %16lu\n", stats.s_granted);
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seq_printf(m, "sexpir: %16lu\n", stats.s_expired);
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seq_printf(m, "srevok: %16lu\n", stats.s_revoked);
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seq_printf(m, "syield: %16lu\n", stats.s_yielded);
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seq_printf(m, "sabort: %16lu\n", stats.s_aborted);
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}
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return 0;
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}
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