From: Nathan Zimmer <nzimmer@sgi.com>
To: unlisted-recipients:; (no To-header on input)
Cc: johnstul@us.ibm.com, tglx@linutronix.de, sboyd@codeaurora.org,
akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
Nathan Zimmer <nzimmer@sgi.com>
Subject: [PATCH v3 0/2] timer_list: Fix /proc/timer_list failure on 4096 cpus
Date: Tue, 26 Feb 2013 17:33:14 -0600 [thread overview]
Message-ID: <1361921596-9636-1-git-send-email-nzimmer@sgi.com> (raw)
In-Reply-To: <51267626.3030308@codeaurora.org>
On systems with 4096 cores attemping to read /proc/timer_list
fails because we are trying to push all the data into a single
kmalloc buffer.
A better solution is to not us the single_open mechanism but to
provide our own seq_operations and treat each cpu as an
individual record.
The output should be identical to the previous version.
v2: Added comments on the iteration and other fixups pointed to by Andrew.
v3: Corrected the case where max_cpus != nr_cpu_ids by exiting early.
Nathan Zimmer (2):
timer_list: split timer_list_show_tickdevices()
timer_list: convert timer list to be a proper seq_file
kernel/time/timer_list.c | 111 +++++++++++++++++++++++++++++++++++++++--------
1 file changed, 92 insertions(+), 19 deletions(-)
--
1.8.1.2
next prev parent reply other threads:[~2013-02-26 23:33 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-20 1:21 mmotm 2013-02-19-17-20 uploaded akpm
2013-02-20 16:41 ` since-3.8 branch opened for mm git tree (was: mmotm 2013-02-19-17-20 uploaded) Michal Hocko
2013-02-21 9:25 ` mmotm 2013-02-19-17-20 uploaded Stephen Boyd
2013-02-21 18:18 ` Nathan Zimmer
2013-02-21 18:27 ` Stephen Boyd
2013-02-21 18:35 ` Nathan Zimmer
2013-02-21 19:31 ` Stephen Boyd
2013-02-26 23:33 ` Nathan Zimmer [this message]
2013-02-26 23:33 ` [PATCH v3 1/2] timer_list: split timer_list_show_tickdevices() Nathan Zimmer
2013-02-27 19:37 ` Stephen Boyd
2013-02-27 19:56 ` Nathan Zimmer
2013-02-28 1:05 ` Nathan Zimmer
2013-02-26 23:33 ` [PATCH v3 2/2] timer_list: convert timer list to be a proper seq_file Nathan Zimmer
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1361921596-9636-1-git-send-email-nzimmer@sgi.com \
--to=nzimmer@sgi.com \
--cc=akpm@linux-foundation.org \
--cc=johnstul@us.ibm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=sboyd@codeaurora.org \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®