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From: Aubrey Li <aubrey.li@linux.intel.com>
To: tglx@linutronix.de, mingo@redhat.com, peterz@infradead.org,
	hpa@zytor.com
Cc: ak@linux.intel.com, tim.c.chen@linux.intel.com,
	dave.hansen@intel.com, arjan@linux.intel.com,
	aubrey.li@intel.com, linux-kernel@vger.kernel.org,
	Aubrey Li <aubrey.li@linux.intel.com>
Subject: [PATCH v11 1/3] /proc/pid/status: Add support for architecture specific output
Date: Wed, 13 Feb 2019 10:37:46 +0800	[thread overview]
Message-ID: <20190213023748.6614-1-aubrey.li@linux.intel.com> (raw)

The architecture specific information of the running processes could
be useful to the userland. Add support to examine process architecture
specific information externally.

Signed-off-by: Aubrey Li <aubrey.li@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
---
 fs/proc/array.c         | 5 +++++
 include/linux/proc_fs.h | 2 ++
 2 files changed, 7 insertions(+)

diff --git a/fs/proc/array.c b/fs/proc/array.c
index 9d428d5a0ac8..ea7a981f289c 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -401,6 +401,10 @@ static inline void task_thp_status(struct seq_file *m, struct mm_struct *mm)
 	seq_printf(m, "THP_enabled:\t%d\n", thp_enabled);
 }
 
+void __weak arch_proc_pid_status(struct seq_file *m, struct task_struct *task)
+{
+}
+
 int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
 			struct pid *pid, struct task_struct *task)
 {
@@ -424,6 +428,7 @@ int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
 	task_cpus_allowed(m, task);
 	cpuset_task_status_allowed(m, task);
 	task_context_switch_counts(m, task);
+	arch_proc_pid_status(m, task);
 	return 0;
 }
 
diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h
index d0e1f1522a78..1de9ba1b064f 100644
--- a/include/linux/proc_fs.h
+++ b/include/linux/proc_fs.h
@@ -73,6 +73,8 @@ struct proc_dir_entry *proc_create_net_single_write(const char *name, umode_t mo
 						    int (*show)(struct seq_file *, void *),
 						    proc_write_t write,
 						    void *data);
+/* Add support for architecture specific output in /proc/pid/status */
+extern void arch_proc_pid_status(struct seq_file *m, struct task_struct *task);
 
 #else /* CONFIG_PROC_FS */
 
-- 
2.17.1


             reply	other threads:[~2019-02-13  2:51 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-13  2:37 Aubrey Li [this message]
2019-02-13  2:37 ` [PATCH v11 2/3] x86,/proc/pid/status: Add AVX-512 usage elapsed time Aubrey Li
2019-02-14 11:29   ` Thomas Gleixner
2019-02-15  4:35     ` Li, Aubrey
2019-02-16 12:55       ` Thomas Gleixner
2019-02-16 17:05         ` Li, Aubrey
2019-02-20 15:35         ` David Laight
2019-02-20 15:38           ` Arjan van de Ven
2019-02-13  2:37 ` [PATCH v11 3/3] Documentation/filesystems/proc.txt: add AVX512_elapsed_ms Aubrey Li

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