From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from fanzine2.igalia.com (fanzine2.igalia.com [213.97.179.56]) (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 9BB454D8DBE for ; Thu, 24 Sep 2026 21:14:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.97.179.56 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790284467; cv=none; b=P3haOThNAialKT8AOlX2ifz9hGXg/0CcenSf+p46eyC52oLbzDRmpMkZM21JF6kBJZHdh8HOLv9hxTFg+zKQfWRcWSRACe5RB99aumSNkqLIyIjO0IqSkG11ZooTQEwEM3P+e5ROuSxSWGTUHtiMi1XyHIznQ9Rzwcnn46uYPSo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790284467; c=relaxed/simple; bh=9xC8YBZ9vXaoecdIXZFYpIJ8iIev82LQ7BfdnEJqSH4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=nY8Xkl4H+18HFVJVVHI/SPVwos3MmK/WNcUYaJKe5j8B15ghLPv8+P4fr6N+DDD7g8ZwOd1mwrTQtRP2dxWQF5WUy8A7Ey3hZPt93QiSOR7k/EBg7ONf1AuDRRTi0wYU7tM+IgK0s1iqVKze1vwkCaIaTPUJ6A9MTlC3iiG284w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=igalia.com; spf=pass smtp.mailfrom=igalia.com; dkim=pass (2048-bit key) header.d=igalia.com header.i=@igalia.com header.b=OQ2/IJoG; arc=none smtp.client-ip=213.97.179.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=igalia.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=igalia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=igalia.com header.i=@igalia.com header.b="OQ2/IJoG" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=igalia.com; s=20170329; h=Content-Transfer-Encoding:MIME-Version:Message-ID:Date:Subject: Cc:To:From:From:Reply-To; bh=M84mPs65aJFN8Y8PkL2D6LYbGgiqN1ylfaTstFz/I04=; b= OQ2/IJoGgJhy0hFHV3CK9NVJlWwF+keBlvah7BsNr/qRqho8PVPd8pGbbikqJigt1Lc2+j6IqUdtq bYHOmMw5eJOxiyuAEmzuIaZ7UOkQJSb2b1u9PwBDlmAHmFBcdgXF0IxyZT46rZl0iBf+Rq2akKxPJ Pj/KwF/FFOFyUZ2W6WqcbiPDtDupWReaMdwYXJ0e3XM+6zL3G6AL+y8GC5oZesdDHaB/FjcrSeDd9 XKNAluBAQ3KAu463CPDtz6mZ/EIsNGQ/LdVnNU2WiPyDwJYd3hBeK6m19wGA9pKwiaIy1q/CpVyQb ua6i9dpS7YZ23qL1RtnBWrTXxW56gJdhRg==; Received: from 113.red-79-144-92.dynamicip.rima-tde.net ([79.144.92.113] helo=killbill) by fanzine2.igalia.com with esmtpsa (Cipher TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim) id 1x9qlk-006qf4-Nu; Thu, 24 Sep 2026 23:14:16 +0200 From: Melissa Wen To: airlied@gmail.com, alexander.deucher@amd.com, aurabindo.pillai@amd.com, Aurabindo.Pillai@amd.com, christian.koenig@amd.com, David.Francis@amd.com, harry.wentland@amd.com, simona@ffwll.ch, siqueira@igalia.com, sunpeng.li@amd.com Cc: amd-gfx@lists.freedesktop.org, Harry.Wentland@amd.com, kernel-dev@igalia.com, linux-kernel@vger.kernel.org Subject: [PATCH 8/8] drm/amd/display: copy function name into dcn_optc_lock_unlock_state trace event Date: Thu, 24 Sep 2026 23:10:11 +0200 Message-ID: <20260924211410.867686-9-mwen@igalia.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260924211410.867686-1-mwen@igalia.com> References: <20260924211410.867686-1-mwen@igalia.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Userspace trace tools that use libtraceevent to read binary buffer only see a kernel address when printing const char *. Use string macros in dcn_optc_lock_unlock_state to copy the function name into the trace event. Fixes: f1943a51f0f9 ("drm/amd/display: Add events log to trace OPTC lock and unlock") Assisted-by: Claude:claude-opus-5-5 Signed-off-by: Melissa Wen --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_trace.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_trace.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_trace.h index b2f38654e489..7f05f73e5b33 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_trace.h +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_trace.h @@ -660,7 +660,7 @@ TRACE_EVENT(dcn_optc_lock_unlock_state, TP_ARGS(optc_state, instance, lock, function, line), TP_STRUCT__entry( - __field(const char *, function) + __string(function, function) __field(int, instance) __field(bool, lock) __field(int, line) @@ -678,7 +678,7 @@ TRACE_EVENT(dcn_optc_lock_unlock_state, __field(int, vready_offset) ), TP_fast_assign( - __entry->function = function; + __assign_str(function); __entry->instance = instance; __entry->lock = lock; __entry->line = line; @@ -700,7 +700,7 @@ TRACE_EVENT(dcn_optc_lock_unlock_state, "min_v_blank_interlace=%d vstartup_start=%d vupdate_offset=%d vupdate_width=%d " "vready_offset=%d", __entry->lock ? "Lock" : "Unlock", - __entry->function, + __get_str(function), __entry->line, __entry->instance, __entry->opp_count, -- 2.53.0