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b=dlccHxcUudJ52u0UKNF+Do4qyYCdpGUxzQFy66W9ztmYk39jEurfuQzYLBB0bxV35 r7d8yi4B8w6LgoTCXTsjtu7CnDSwagHRnDqWwOB0dYdmNiRhhQF6Rr2MUqf8xGiOjf CdAF2Gs/lSBYozs+SJOV5M2fCjS/iOXKGbs7i6wk= From: Thomas Ballasi To: tballasi@linux.microsoft.com Cc: akpm@linux-foundation.org, axelrasmussen@google.com, david@kernel.org, hannes@cmpxchg.org, linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org, lorenzo.stoakes@oracle.com, mhiramat@kernel.org, mhocko@kernel.org, rostedt@goodmis.org, shakeel.butt@linux.dev, weixugc@google.com, yuanchu@google.com, zhengqi.arch@bytedance.com Subject: [PATCH v7 1/3] tracing: Add __event_in_*irq() helpers Date: Mon, 23 Feb 2026 09:15:42 -0800 Message-Id: <20260223171544.4750-2-tballasi@linux.microsoft.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260223171544.4750-1-tballasi@linux.microsoft.com> References: <20260213181537.54350-1-tballasi@linux.microsoft.com> <20260223171544.4750-1-tballasi@linux.microsoft.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Queue-Id: 9F5AD120016 X-Rspamd-Server: rspam02 X-Stat-Signature: fk1e5y3dg6p6yh669zy43tpyifiq3kky X-HE-Tag: 1771866950-193460 X-HE-Meta: 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 k2hW9gmg pfplfXUvshV6+9rZwG4ZiXHKIJ8yJTTG80TWYmSqkHewfrDBxy7YelL0PMb7k3BAPQzo71pe2LQx1bPLqm9LflnEod8R5QqGrHcsqiycdrK7bHPfPWvgXa3AVbl6J8V1yeI9mwylffy7YFZ/cd4y/MZYvBidT1eUGMn8VEaYyHGRDh7fm0I08YGNWHpOPV2lUpIjN/z/3RF+mqtN5PcmKnY3aV+mT2PJ9bltwt4BtTnj9mjso/oB1TZ8NRROMHLm+yM5w/RzTSZjrZ1HeXriosk7yOHdP8xkkZKM4kz9hwaWXgxoZYak0W8wGyLiqxOjtqs91+sdkl0xh+9d/ppFEenk+88xOR4XwRrHBQXxZ0DzAmZledub3mBiKcG5EOjShP7AyIUaFda9e3trt3tlrutjLBglf55PXt0Zf X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: Steven Rostedt Some trace events want to expose in their output if they were triggered in an interrupt or softirq context. Instead of recording this in the event structure itself, as this information is stored in the flags portion of the event header, add helper macros that can be used in the print format: TP_printk("val=%d %s", __entry->val, __event_in_irq() ? "(in-irq)" : "") This will output "(in-irq)" for the event in the trace data if the event was triggered in hard or soft interrupt context. Link: https://lore.kernel.org/all/20251229132942.31a2b583@gandalf.local.home/ Signed-off-by: Steven Rostedt (Google) Signed-off-by: Thomas Ballasi --- include/trace/stages/stage3_trace_output.h | 8 ++++++++ include/trace/stages/stage7_class_define.h | 19 +++++++++++++++++++ 2 files changed, 27 insertions(+) diff --git a/include/trace/stages/stage3_trace_output.h b/include/trace/stages/stage3_trace_output.h index 1e7b0bef95f52..53a23988a3b8a 100644 --- a/include/trace/stages/stage3_trace_output.h +++ b/include/trace/stages/stage3_trace_output.h @@ -150,3 +150,11 @@ #undef __get_buf #define __get_buf(len) trace_seq_acquire(p, (len)) + +#undef __event_in_hardirq +#undef __event_in_softirq +#undef __event_in_irq + +#define __event_in_hardirq() (__entry->ent.flags & TRACE_FLAG_HARDIRQ) +#define __event_in_softirq() (__entry->ent.flags & TRACE_FLAG_SOFTIRQ) +#define __event_in_irq() (__entry->ent.flags & (TRACE_FLAG_HARDIRQ | TRACE_FLAG_SOFTIRQ)) diff --git a/include/trace/stages/stage7_class_define.h b/include/trace/stages/stage7_class_define.h index fcd564a590f43..47008897a7956 100644 --- a/include/trace/stages/stage7_class_define.h +++ b/include/trace/stages/stage7_class_define.h @@ -26,6 +26,25 @@ #undef __print_hex_dump #undef __get_buf +#undef __event_in_hardirq +#undef __event_in_softirq +#undef __event_in_irq + +/* + * The TRACE_FLAG_* are enums. Instead of using TRACE_DEFINE_ENUM(), + * use their hardcoded values. These values are parsed by user space + * tooling elsewhere so they will never change. + * + * See "enum trace_flag_type" in linux/trace_events.h: + * TRACE_FLAG_HARDIRQ + * TRACE_FLAG_SOFTIRQ + */ + +/* This is what is displayed in the format files */ +#define __event_in_hardirq() (REC->common_flags & 0x8) +#define __event_in_softirq() (REC->common_flags & 0x10) +#define __event_in_irq() (REC->common_flags & 0x18) + /* * The below is not executed in the kernel. It is only what is * displayed in the print format for userspace to parse. -- 2.33.8