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Wed, 21 Oct 2020 11:48:30 +0000 (GMT) From: =?ks_c_5601-1987?B?sejDorHi?= To: "'Petr Mladek'" , "'Sergey Senozhatsky'" , "'Steven Rostedt'" , "'John Ogness'" Cc: "'Linus Torvalds'" , "'Thomas Gleixner'" , "'Prarit Bhargava'" , "'Mark Salyzyn'" , "'Chunyan Zhang'" , "'Orson Zhai'" , "'Sergey Senozhatsky'" , In-Reply-To: <20200923135617.27149-3-pmladek@suse.com> Subject: RE: [RFC 2/2] printk: Add more information about the printk caller Date: Wed, 21 Oct 2020 20:48:30 +0900 Message-ID: <000001d6a7a0$18c86300$4a592900$@samsung.com> MIME-Version: 1.0 Content-Type: text/plain; charset="ks_c_5601-1987" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Outlook 16.0 Thread-Index: AQIUKKOc5L5O7KHwe351ByR0S6vHPwILAzL3Aha7x6KpBd/9kA== Content-Language: ko X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrPJsWRmVeSWpSXmKPExsWy7bCmma6AwoR4g0mv2Sy2XZnPaHF51xw2 i+kfZjNa/H/8ldXi3Y9edot9HQ+YLH5uesho8WjCJCaLtZ8fs1ts3jSV2eJR31t2i+UPdrE7 8Hhs272N1WPnrLvsHi37brF7vDt3jt3jxIzfLB7v911l81i/5SqLx+dNcgEcUTk2GamJKalF Cql5yfkpmXnptkrewfHO8aZmBoa6hpYW5koKeYm5qbZKLj4Bum6ZOUDnKimUJeaUAoUCEouL lfTtbIryS0tSFTLyi0tslVILUnIKDA0L9IoTc4tL89L1kvNzrQwNDIxMgSoTcjIu7jjPXnCS peJ0Z3YD4xXmLkYODgkBE4nb3aZdjFwcQgI7GCXe/VvFCOF8YpS4/ucylPOZUWL9ivUsXYyc YB3HFh5igUjsYpTY9f4xG0hCSOAFo0TbVj0Qm03AVqK98wE7SJEIyNyXEy+BjWIWeMokcfPZ F3aQKk4BM4nL77pZQWxhAW+JR8sug61gEVCVeHi2D6yGV8BS4tWlSYwQtqDEyZlPwGqYBYwk lqyezwRhy0tsfzuHGeI8BYmfT5eBzRQRcJK4MOsVG0SNiMTszjaomgscErfXJkHYLhINH/ZC xYUlXh3fwg5hS0m87G+DsuslvvUvAHtZQqCHUeJv13E2iISxxKxn7YyQkFSWOHIL6jY+iY7D f9khwrwSHW1CEKaqRPdkfQhTWuLDDpsJjEqzkPw1C8lfs5D8NQvJ/QsYWVYxiqUWFOempxYb FRgjx/UmRnBK1nLfwTjj7Qe9Q4xMHIyHGCU4mJVEePNEJ8QL8aYkVlalFuXHF5XmpBYfYjQF BvVEZinR5HxgVsgriTc0NTIzM7A0tTA1M7JQEucNXdkXLySQnliSmp2aWpBaBNPHxMEp1cCU /Ojop9kN7E6GvsfZjq87NW/Zwv5XavwLuieo6mypn6HBU/9hxmXRJ8ePqq/RWsnU9WPK7T0N v24qxXnx8z02YZ+1IeJS36EHV3MnzQ7dJnGpN3gv88Wqgolnb0wKvhteyO8hdX6ZdFr5OrX9 Qv6V7yJUxMzOP1/MznGp1UbugFaY2LVXYdI/nLVmPNCwDP3Ouuzfsg/6j6QdNZKS1NSfiIQX nmVbuGPHA/0z1w7UBD1TjzyWo/7V6sofu/niJh4Xax6IT6hZMctE/6ppgVWrSZlV+i75x4+P W7FYRV+8vjPqZFzOlv0N3zduv3zh0s9fuoyPpDa/+6oYuDmmpVfxtsaDOubfNSpuV7dm8ga8 VGIpzkg01GIuKk4EAGUJ2lVSBAAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrLIsWRmVeSWpSXmKPExsWy7bCSnC6fwoR4gzkndS22XZnPaHF51xw2 i+kfZjNa/H/8ldXi3Y9edot9HQ+YLH5uesho8WjCJCaLtZ8fs1ts3jSV2eJR31t2i+UPdrE7 8Hhs272N1WPnrLvsHi37brF7vDt3jt3jxIzfLB7v911l81i/5SqLx+dNcgEcUVw2Kak5mWWp Rfp2CVwZF3ecZy84yVJxujO7gfEKcxcjJ4eEgInEsYWHWLoYuTiEBHYwSrx9ep4NIiEtcfzV bHYIW1jifssRVoiiZ4wSH5pnMIIk2ARsJdo7H7CDJEQEdjFKfF0whxnEYRZ4zSTxZHUv1NyN jBILfx4FW8gpYCZx+V03K4gtLOAt8WjZZRYQm0VAVeLh2T6wfbwClhKvLk1ihLAFJU7OfAJW wwx0bOPhbihbXmL72zlQTyhI/Hy6DGymiICTxIVZr9ggakQkZne2MU9gFJ6FZNQsJKNmIRk1 C0nLAkaWVYySqQXFuem5xYYFRnmp5XrFibnFpXnpesn5uZsYwTGqpbWDcc+qD3qHGJk4GA8x SnAwK4nw5olOiBfiTUmsrEotyo8vKs1JLT7EKM3BoiTO+3XWwjghgfTEktTs1NSC1CKYLBMH p1QDk4UM67Qd2113nOfl2qxR9EI52vfbij/fZvlIHpnTKKCx14+92slO8KisesUNr1Vx257Y qOxaIRMdHu9/6tHLNxKTz3yRSo9epXpv91eNU2ffPDNtKV5dac4Yu+J0q73IxNTyu6sPHdy6 LWqa+aFFaxde3rqz96zfbdfMB9I3rNbN8IqZU9T1NN6kZXdMfy/HlzK3KxsUL2hsPhIVzNu7 OdDNQP/Jr4db65fsU7B7/+ifyhx1AU6JW3pbyleoTo16/G6aTK3cWo3esuL8PdGC+yb+qLES e1CVYcy92sS3jOPWEePDzflzUrY4h0ptKek9N/foFHmpjJk2RevTWzN5jS1FFHsvbPL1XXhr 7eQtnEosxRmJhlrMRcWJAH5fk81AAwAA X-CMS-MailID: 20201021114830epcas2p4be321b0a680e312aac8be42359f54ab9 X-Msg-Generator: CA X-Sendblock-Type: AUTO_CONFIDENTIAL CMS-TYPE: 102P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20200923135727epcas2p4bf202e52e2ac67926a30000e98a0665b References: <20200923135617.27149-1-pmladek@suse.com> <20200923135617.27149-3-pmladek@suse.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > +static size_t info_print_caller_id(char *buf, size_t size, > + const struct printk_caller *caller) { > + enum printk_caller_ctx ctx; > + > + ctx = printk_to_caller_ctx(caller->cpu_ctx); > + > + if (ctx == printk_ctx_task) > + return snprintf(buf, size, "T%u", caller->pid); > + > + return snprintf(buf, size, "C%u", > +printk_to_caller_cpu(caller->cpu_ctx)); > +} > + When I apply and test this patch, there is no change of print format compared with previous PRINTK_CALLER. The patch that I made is always to print the CPU ID and process name together.