From e9f0a363473585a0f51b1b61a9bb15a63808d6ea Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Tue, 22 Oct 2024 13:01:12 +0200 Subject: tracing: Remove TRACE_FLAG_IRQS_NOSUPPORT It was possible to enable tracing with no IRQ tracing support. The tracing infrastructure would then record TRACE_FLAG_IRQS_NOSUPPORT as the only tracing flag and show an 'X' in the output. The last user of this feature was PPC32 which managed to implement it during PowerPC merge in 2009. Since then, it was unused and the PPC32 dependency was finally removed in commit 0ea5ee035133a ("tracing: Remove PPC32 wart from config TRACING_SUPPORT"). Since the PowerPC merge the code behind !CONFIG_TRACE_IRQFLAGS_SUPPORT with TRACING enabled can no longer be selected used and the 'X' is not displayed or recorded. Remove the CONFIG_TRACE_IRQFLAGS_SUPPORT from the tracing code. Remove TRACE_FLAG_IRQS_NOSUPPORT. Cc: Peter Zijlstra Cc: Masami Hiramatsu Cc: Mathieu Desnoyers Link: https://lore.kernel.org/20241022110112.XJI8I9T2@linutronix.de Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Steven Rostedt (Google) --- Documentation/trace/ftrace.rst | 3 --- 1 file changed, 3 deletions(-) (limited to 'Documentation/trace/ftrace.rst') diff --git a/Documentation/trace/ftrace.rst b/Documentation/trace/ftrace.rst index 4073ca48af4a..74d5bd801b1a 100644 --- a/Documentation/trace/ftrace.rst +++ b/Documentation/trace/ftrace.rst @@ -1031,9 +1031,6 @@ explains which is which. CPU#: The CPU which the process was running on. irqs-off: 'd' interrupts are disabled. '.' otherwise. - .. caution:: If the architecture does not support a way to - read the irq flags variable, an 'X' will always - be printed here. need-resched: - 'N' both TIF_NEED_RESCHED and PREEMPT_NEED_RESCHED is set, -- cgit v1.2.3