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 749BD266588; Mon, 5 May 2025 17:33:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746466419; cv=none; b=Cp9Geset1vP+7rPqf65vqfp8tebHmjIn/uTEshRF+FlUVcs5ToEWV8/4SDeQUJylG4WK5s7uI5SLdjyO6rEfFjIeXFKuIaBR+hSmLVklgurG1U5MZfo4PKU+auqxq2R/yo80KeGKiWpyTC117TOygQZP8kOhjndsYz017eZ5QzM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746466419; c=relaxed/simple; bh=r/J3RdlUauCReBYN9Ih2mzIpJXEGqxCGvwWWjZoKeqk=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=bn+namE47Sg3RQHVgNwA1Oas9l9VTxzaZFkCESUuawJb/djhaAv3Rk1G43hzymuSS2I2YxLwpS6/aSnjMy56hUvTByJQRbNIb16ei2oNknJS/itCcAA9pWLE7hia+rET9Hg8ZXokmXEwnK5AF4FouN88NWBPvKfTNzucFI7ufVs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=gjo+YBTX; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="gjo+YBTX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8A762C4CEF3; Mon, 5 May 2025 17:33:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746466419; bh=r/J3RdlUauCReBYN9Ih2mzIpJXEGqxCGvwWWjZoKeqk=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=gjo+YBTXB84vOFLAkUrBiyXaSsrHZS0QSR6oEWPPFUAUNUMamMrLqYlRlz3eCO3Ft 0TGGIgz/Y0kzmRpf80J6psPlR03twFKJyeI+lIgmmJXONTta8jb13tQLsdXSPlw/s/ Kw6DkV1mz43Bf37Sl+DnL3gRND63p/Yh9j6cPs4RRE4FfXSysgrYLmLne8wLEjR6kU PIGyz5oNaKIAOemTAFcJvFjEAf2+k5PhaN1/PzOUS1Q4wqu+R083R89RrVmfEzLU2N 9OeBO+dPle1rsC74un4THGsy8iTH3H1ocVUNGIupmPEa12jL54dSTrRGFsCTtl9jsJ Uv6G50QaBSIAA== From: Jeff Layton Date: Mon, 05 May 2025 13:33:19 -0400 Subject: [PATCH v7 05/10] ref_tracker: allow pr_ostream() to print directly to a seq_file Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250505-reftrack-dbgfs-v7-5-f78c5d97bcca@kernel.org> References: <20250505-reftrack-dbgfs-v7-0-f78c5d97bcca@kernel.org> In-Reply-To: <20250505-reftrack-dbgfs-v7-0-f78c5d97bcca@kernel.org> To: Andrew Morton , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin Cc: Kuniyuki Iwashima , Qasim Ijaz , Nathan Chancellor , Andrew Lunn , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, Jeff Layton X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2126; i=jlayton@kernel.org; h=from:subject:message-id; bh=r/J3RdlUauCReBYN9Ih2mzIpJXEGqxCGvwWWjZoKeqk=; b=owEBbQKS/ZANAwAIAQAOaEEZVoIVAcsmYgBoGPZmBMxDi92UA5xN5em0PLOVIKyTrTTexMeu3 KnpbRZmkAyJAjMEAAEIAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCaBj2ZgAKCRAADmhBGVaC FT+2EACPjfPrd0tmfH+Grv9GPGYsSDt4TWGdYbwjP5WoMFyIOfeTCmfXXotjIO9Eb/EtKECs9Fw Ujy7O8kQObVrafjS/bXpU4IBtclI/dXll+3Ng9tEhwfnvlpQ37E3hKvJRHzjzgHo6gKbui0TWar mLKiyp5AGWAA+zuhZJqz3IKumld2gJDCaVAftxaj/GAxkkIKHbNxlOkuIGCeAQgRxlt/L8/Gqne ooNh2AZExF5YL8I/ZdiwepglfopcQVfI4ROv20lHwAZsXmCrV3avb36Gj7us9B5ZeUcyEYgaMcR v6sVgZiBpUjvUs9NAYhZQMhJGd5CYKw2HWpkE7vIqlMu5RvIHnkJtJWoy9IygxJg1sd8HAVa8Kf 9J4/Br9gmsRjyZzzktTtfYJPlQbftb+apoV6sqqc01qujFrCLt97mtwfmwaXNHCG6/royV+9CRv CEurW4zJ9zW/lDodaLSaStBZuFI5YcAT9ALOWCs6zwNxrlSdW2+VdxkKcM8ahmBlfxFQVAQdHrW DOlfMykmgRLmFj9shw0qV7R4Nra90ScVvy2KmKqQkwkSLrdgUA1dUe9hiwidLq8UME7snzARkC7 +iAqNxq5ennpR2EUbrFSxg/8JA17D1H9QEAzH8xDuiGzmhU8ZqqidztDWDB0YeTvw7lwnJ9IS0u WUMtRvm1QDOp3Gw== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 Allow pr_ostream to also output directly to a seq_file without an intermediate buffer. The first caller of +ref_tracker_dir_seq_print() will come in a later patch, so mark that __maybe_unused for now. That designation will be removed once it is used. Reviewed-by: Andrew Lunn Signed-off-by: Jeff Layton --- lib/ref_tracker.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/lib/ref_tracker.c b/lib/ref_tracker.c index 510d927c785576fd90292d325d20a465d5f38079..66a765cdfc471968fd6434dafc5b654962f20667 100644 --- a/lib/ref_tracker.c +++ b/lib/ref_tracker.c @@ -8,6 +8,7 @@ #include #include #include +#include #define REF_TRACKER_STACK_ENTRIES 16 #define STACK_BUF_SIZE 1024 @@ -68,6 +69,7 @@ struct ostream { void __ostream_printf (*func)(struct ostream *stream, char *fmt, ...); char *prefix; char *buf; + struct seq_file *seq; int size, used; }; @@ -91,6 +93,15 @@ static void __ostream_printf pr_ostream_buf(struct ostream *stream, char *fmt, . stream->used += min(ret, len); } +static void __ostream_printf pr_ostream_seq(struct ostream *stream, char *fmt, ...) +{ + va_list args; + + va_start(args, fmt); + seq_vprintf(stream->seq, fmt, args); + va_end(args); +} + #define pr_ostream(stream, fmt, args...) \ ({ \ struct ostream *_s = (stream); \ @@ -300,6 +311,21 @@ EXPORT_SYMBOL_GPL(ref_tracker_free); #ifdef CONFIG_DEBUG_FS #include +static __maybe_unused int +ref_tracker_dir_seq_print(struct ref_tracker_dir *dir, struct seq_file *seq) +{ + struct ostream os = { .func = pr_ostream_seq, + .prefix = "", + .seq = seq }; + unsigned long flags; + + spin_lock_irqsave(&dir->lock, flags); + __ref_tracker_dir_pr_ostream(dir, 16, &os); + spin_unlock_irqrestore(&dir->lock, flags); + + return os.used; +} + static int __init ref_tracker_debugfs_init(void) { ref_tracker_debug_dir = debugfs_create_dir("ref_tracker", NULL); -- 2.49.0