From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0C2E455E4D for ; Thu, 21 Dec 2023 16:09:58 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8C032C433C8; Thu, 21 Dec 2023 16:09:58 +0000 (UTC) Received: from rostedt by gandalf with local (Exim 4.97) (envelope-from ) id 1rGLdW-000000041G5-1XeU; Thu, 21 Dec 2023 11:11:02 -0500 Message-ID: <20231221161024.478795180@goodmis.org> User-Agent: quilt/0.67 Date: Thu, 21 Dec 2023 11:10:24 -0500 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Masami Hiramatsu , Mark Rutland , Mathieu Desnoyers , Andrew Morton Subject: [for-next][PATCH 00/16] tracing: Add dynamic sub-buffer size for 6.8 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git trace/for-next Head SHA1: 3cb3091138ca0921c4569bcf7ffa062519639b6a Steven Rostedt (Google) (11): ring-buffer: Clear pages on error in ring_buffer_subbuf_order_set() failure ring-buffer: Do no swap cpu buffers if order is different ring-buffer: Make sure the spare sub buffer used for reads has same size tracing: Update snapshot order along with main buffer order tracing: Stop the tracing while changing the ring buffer subbuf size ring-buffer: Keep the same size when updating the order ring-buffer: Just update the subbuffers when changing their allocation order ring-buffer: Add documentation on the buffer_subbuf_order file ringbuffer/selftest: Add basic selftest to test changing subbuf order tracing: Update subbuffer with kilobytes not page order ring-buffer: Use subbuf_order for buffer page masking Tzvetomir Stoyanov (VMware) (5): ring-buffer: Have ring_buffer_print_page_header() be able to access ring_buffer_iter ring-buffer: Page size per ring buffer ring-buffer: Add interface for configuring trace sub buffer size ring-buffer: Set new size of the ring buffer sub page ring-buffer: Read and write to ring buffers with custom sub buffer size ---- Documentation/trace/ftrace.rst | 21 + include/linux/ring_buffer.h | 17 +- kernel/trace/ring_buffer.c | 428 ++++++++++++++++----- kernel/trace/ring_buffer_benchmark.c | 10 +- kernel/trace/trace.c | 155 +++++++- kernel/trace/trace.h | 1 + kernel/trace/trace_events.c | 59 ++- .../test.d/00basic/ringbuffer_subbuf_size.tc | 95 +++++ 8 files changed, 658 insertions(+), 128 deletions(-) create mode 100644 tools/testing/selftests/ftrace/test.d/00basic/ringbuffer_subbuf_size.tc