diff options
| author | Steven Rostedt <rostedt@goodmis.org> | 2025-07-22 10:37:14 -0400 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2025-07-23 14:58:55 -0400 |
| commit | 9f0cb91767f582df6b17c1e2f22f684c36962295 (patch) | |
| tree | 65b888b3e6195765504e90ff44832e50dfacea32 /include/trace | |
| parent | a594dec7607744a8f877c8516c73a7728a7b66e3 (diff) | |
tracing: arm: arm64: Hide trace events ipi_raise, ipi_entry and ipi_exit
The ipi tracepoints are mostly generic, but the tracepoints ipi_raise,
ipi_entry and ipi_exit are only used by arm and arm64. This means these
trace events are wasting memory in all the other architectures that do not
use them.
Add CONFIG_HAVE_EXTRA_IPI_TRACEPOINTS and have arm and arm64 select it to
enable these trace events. The config makes it easy if other architectures
decide to trace these as well.
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Will Deacon <will@kernel.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Valentin Schneider <vschneid@redhat.com>
Cc: Nicolas Pitre <nico@fluxnic.net>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/20250722103714.64eba013@gandalf.local.home
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/ipi.h | 58 |
1 files changed, 30 insertions, 28 deletions
diff --git a/include/trace/events/ipi.h b/include/trace/events/ipi.h index 3de9bfc982ce..9912f0ded81d 100644 --- a/include/trace/events/ipi.h +++ b/include/trace/events/ipi.h @@ -7,34 +7,6 @@ #include <linux/tracepoint.h> -/** - * ipi_raise - called when a smp cross call is made - * - * @mask: mask of recipient CPUs for the IPI - * @reason: string identifying the IPI purpose - * - * It is necessary for @reason to be a static string declared with - * __tracepoint_string. - */ -TRACE_EVENT(ipi_raise, - - TP_PROTO(const struct cpumask *mask, const char *reason), - - TP_ARGS(mask, reason), - - TP_STRUCT__entry( - __bitmask(target_cpus, nr_cpumask_bits) - __field(const char *, reason) - ), - - TP_fast_assign( - __assign_bitmask(target_cpus, cpumask_bits(mask), nr_cpumask_bits); - __entry->reason = reason; - ), - - TP_printk("target_mask=%s (%s)", __get_bitmask(target_cpus), __entry->reason) -); - TRACE_EVENT(ipi_send_cpu, TP_PROTO(const unsigned int cpu, unsigned long callsite, void *callback), @@ -79,6 +51,35 @@ TRACE_EVENT(ipi_send_cpumask, __get_cpumask(cpumask), __entry->callsite, __entry->callback) ); +#ifdef CONFIG_HAVE_EXTRA_IPI_TRACEPOINTS +/** + * ipi_raise - called when a smp cross call is made + * + * @mask: mask of recipient CPUs for the IPI + * @reason: string identifying the IPI purpose + * + * It is necessary for @reason to be a static string declared with + * __tracepoint_string. + */ +TRACE_EVENT(ipi_raise, + + TP_PROTO(const struct cpumask *mask, const char *reason), + + TP_ARGS(mask, reason), + + TP_STRUCT__entry( + __bitmask(target_cpus, nr_cpumask_bits) + __field(const char *, reason) + ), + + TP_fast_assign( + __assign_bitmask(target_cpus, cpumask_bits(mask), nr_cpumask_bits); + __entry->reason = reason; + ), + + TP_printk("target_mask=%s (%s)", __get_bitmask(target_cpus), __entry->reason) +); + DECLARE_EVENT_CLASS(ipi_handler, TP_PROTO(const char *reason), @@ -127,6 +128,7 @@ DEFINE_EVENT(ipi_handler, ipi_exit, TP_ARGS(reason) ); +#endif /* CONFIG_HAVE_EXTRA_IPI_TRACEPOINTS */ #endif /* _TRACE_IPI_H */ |