From mboxrd@z Thu Jan 1 00:00:00 1970 From: Aubrey Li Subject: [PATCH v16 1/3] /proc/pid/status: Add support for architecture specific output Date: Wed, 17 Apr 2019 18:18:38 +0800 Message-ID: <20190417101840.2926-1-aubrey.li@linux.intel.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: Sender: linux-kernel-owner@vger.kernel.org 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, adobriyan@gmail.com, akpm@linux-foundation.org, aubrey.li@intel.com, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org, Aubrey Li List-Id: linux-api@vger.kernel.org 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 Cc: Peter Zijlstra Cc: Andi Kleen Cc: Tim Chen Cc: Dave Hansen Cc: Arjan van de Ven Cc: Linux API Cc: Alexey Dobriyan Cc: Andrew Morton --- fs/proc/array.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/fs/proc/array.c b/fs/proc/array.c index 2edbb657f859..a6b394402ea2 100644 --- a/fs/proc/array.c +++ b/fs/proc/array.c @@ -96,6 +96,14 @@ #include #include "internal.h" +/* + * Add support for architecture specific output in /proc/pid/status. + * arch_proc_pid_status() must be defined in asm/processor.h + */ +#ifndef arch_proc_pid_status +#define arch_proc_pid_status(m, task) +#endif + void proc_task_name(struct seq_file *m, struct task_struct *p, bool escape) { char *buf; @@ -424,6 +432,7 @@ 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; } -- 2.21.0