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Thu, 8 Oct 2020 07:40:40 +0000 (GMT) From: Chanwoo Choi To: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: mka@chromium.org, rostedt@goodmis.org, mingo@redhat.com, cw00.choi@samsung.com, chanwoo@kernel.org, myungjoo.ham@samsung.com, kyungmin.park@samsung.com Subject: [PATCH 0/3] PM / devfreq: Add devfreq_frequency tracepoint to track frequency change Date: Thu, 8 Oct 2020 16:54:00 +0900 Message-Id: <20201008075403.26181-1-cw00.choi@samsung.com> X-Mailer: git-send-email 2.17.1 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrIKsWRmVeSWpSXmKPExsWy7bCmgW7lobp4g45rehYTb1xhsbj+5Tmr xdmmN+wWl3fNYbP43HuE0eLSgQVMFp83PGa0uN24gs1iX8cDJgdOj9kNF1k8WvbdYvfYtKqT zeP9vqtsHn1bVjF6fN4kF8AWlW2TkZqYklqkkJqXnJ+SmZduq+QdHO8cb2pmYKhraGlhrqSQ l5ibaqvk4hOg65aZA3SVkkJZYk4pUCggsbhYSd/Opii/tCRVISO/uMRWKbUgJafAskCvODG3 uDQvXS85P9fK0MDAyBSoMCE74+/6n8wFDzkrfqw/wN7AOIGji5GTQ0LAROLthWbmLkYuDiGB HYwSRxb/ZodwPjFKdLy6wgLhfGaUWLR2FytMy5f7zVCJXYwSOzbsYIVwvjBKHNtxnxmkik1A S2L/ixtsILaIgJXE6f8dYEuYBeYzSvy9+5MRJCEsEC9xrfkAWAOLgKrEz2cH2UFsXqCGpw3L 2SDWyUus3nAArFlC4BS7xKQtn5ghEi4S/2e8Z4SwhSVeHd/CDmFLSbzsb4OyqyVWnjzCBtHc wSixZf8FqCeMJfYvnczUxcgBdJKmxPpd+hBhRYmdv+eCzWQW4JN497WHFaREQoBXoqNNCKJE WeLyg7tMELakxOL2Tqg7PSS2td0EO01IIFZi0uVdjBMYZWchLFjAyLiKUSy1oDg3PbXYsMAQ OZ42MYLTmpbpDsaJbz/oHWJk4mA8xCjBwawkwpvuXRMvxJuSWFmVWpQfX1Sak1p8iNEUGGAT maVEk/OBiTWvJN7Q1MjY2NjCxNDM1NBQSZz34S2FeCGB9MSS1OzU1ILUIpg+Jg5OqQambGv7 zdwHn91d/a5OzrOhOOaK1MymQF9B5ocnolcoJ1gJT13sNyG8YeIk0yqT89I76o/oL78oPTd6 /iEFKQuh2Wm3Ww5FlJnqeJ239CvWuDiPb1NW8M78dr5bU+5tvSVcau9ywIyFTXrTb+njAuUR q45tWqJ3zTrlZOnbD0+XxJ6ZIceZ/4Ote9aKaYb3m85w+Cv+tOJj9p4t1qN77csnh6RFQu9n Xg1PE1WqM//EUen99e6/TVvuSfhaP1Zx4Et4veF866Ku8BlXCl7tF/d5Mql9/fZIAQ/ezOtx +40YTwc47bL91Tnprj1jxM5dL58GFCxzS+10ylKv0p0p06k0d/vyzcEJnb6VffMSduxWYinO SDTUYi4qTgQATNuNgvQDAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFuplluLIzCtJLcpLzFFi42LZdlhJTrfyUF28waJtbBYTb1xhsbj+5Tmr xdmmN+wWl3fNYbP43HuE0eLSgQVMFp83PGa0uN24gs1iX8cDJgdOj9kNF1k8WvbdYvfYtKqT zeP9vqtsHn1bVjF6fN4kF8AWxWWTkpqTWZZapG+XwJXxd/1P5oKHnBU/1h9gb2CcwNHFyMkh IWAi8eV+M0sXIxeHkMAORol70/czQiQkJaZdPMrcxcgBZAtLHD5cDFHziVFi4fMGsBo2AS2J /S9usIHYIgI2EncXX2MBsZkFljNKzG0VBLGFBWIlTk1dzgxiswioSvx8dpAdxOYVsJJ42rCc DWKXvMTqDQeYJzDyLGBkWMUomVpQnJueW2xYYJSXWq5XnJhbXJqXrpecn7uJERxiWlo7GPes +qB3iJGJg/EQowQHs5IIb7p3TbwQb0piZVVqUX58UWlOavEhRmkOFiVx3q+zFsYJCaQnlqRm p6YWpBbBZJk4OKUamE5PvCprkfdQ6PeGhdOvdAlz5e5rX75ZIMbZ/5rLitRY/5mzux8kKoWL P+GYsDleNnrHkivzV+tPjc5IqPWfqX3x4p51RYWP2yfMdmO6vLOi+MeJDffTGLfeufiZdbHH 5eO6xq80S556PDWsDW7dfOUU55m3TL82aOfd5JWNuCeqeIzT8eTqWUZvr8fZJXc63QiYOnPL 2t7knctaBV7Ez2JjOvj/wlt3E3km9V+hIhu3PGBpO7W/h0FMo/17y69i6TsTbOprPC+q5HKU bzm7dzHT3rnunsbskx22cj2JcWD37r+/bvaEgz93Oh522yX67N2ZgPcHp6ptM1mZ0VFs98r1 UP4JH2tXXTmH+hmZr1KVWIozEg21mIuKEwER+n0MoAIAAA== X-CMS-MailID: 20201008074041epcas1p14111dc3070c66fce8d775e2fbae39f15 X-Msg-Generator: CA X-Sendblock-Type: SVC_REQ_APPROVE CMS-TYPE: 101P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20201008074041epcas1p14111dc3070c66fce8d775e2fbae39f15 References: Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Add devfreq_tracepoint to track the correct timing of frequency change with following information: - device name - current frequency - previous frequency - load when change frequency - tracepoint path : /sys/kernel/debug/tracing/events/devfreq_frequency And add devfreq_update_target() function to unify the frequency change code on both devfreq core and devfreq passive governor because there are redundant duplicate code. Lastly, Use fixed indentation size to improve readability for 'devfreq_monitor' tracepoint. Matthias already sent the patch[1]. Make patch3 by editing patch[1]. [1]https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg2108015.html Chanwoo Choi (2): trace: events: devfreq: Use fixed indentation size to improve readability PM / devfreq: Unify frequency change to devfreq_update_target func Matthias Kaehlcke (1): PM / devfreq: Add tracepoint for frequency changes drivers/devfreq/devfreq.c | 37 +++++++++++++++++++++----- drivers/devfreq/governor.h | 1 + drivers/devfreq/governor_passive.c | 42 +++++++----------------------- include/trace/events/devfreq.h | 30 ++++++++++++++++++++- 4 files changed, 70 insertions(+), 40 deletions(-)