From: Christoph Hellwig <hch@sgi.com>
To: John Levon <movement@marcelothewonderpenguin.com>
Cc: linux-kernel@vger.kernel.org, bobm@fc.hp.com, phil.el@wanadoo.fr,
torvalds@transmeta.com
Subject: Re: [PATCH][RFC] oprofile 2.5.38 patch
Date: Tue, 24 Sep 2002 14:48:38 -0400 [thread overview]
Message-ID: <20020924144838.A1144@sgi.com> (raw)
In-Reply-To: <20020923222933.GA33523@compsoc.man.ac.uk>; from movement@marcelothewonderpenguin.com on Mon, Sep 23, 2002 at 11:29:33PM +0100
On Mon, Sep 23, 2002 at 11:29:33PM +0100, John Levon wrote:
>
> At :
>
> http://oprofile.sourceforge.net/oprofile-2.5.html
Comments:
+if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
+ mainmenu_option next_comment
+ comment 'Profiling support'
+ bool 'Profiling support' CONFIG_PROFILING
+ source drivers/oprofile/Config.in
+ endmenu
+fi
The check and the menu should go into drivers/oprofile/Config.in
+OProfile system profiling
+CONFIG_OPROFILE
+ OProfile is a profiling system capable of profiling the
+ whole system, include the kernel, kernel modules, libraries,
+ and applications.
+
+ If unsure, say N.
For 2.5 we don't need/want the 'OProfile system profiling' line.
if [ "$CONFIG_PREEMPT" != "y" ]; then
+ dep_tristate 'OProfile system profiling' CONFIG_OPROFILE
$CONFIG_EXPERIMENTAL $CONFIG_PROFILING
+fi
You already tested for CONFIG_EXPERIMENTAL above.. Also you want
an (EXPERIMENTAL) mark.
Together with the above suggestion drivers/oprofile/Config.in should
look roughly like:
if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
mainmenu_option next_comment
comment 'Profiling support'
bool 'Profiling support (EXPERIMENTAL)' CONFIG_PROFILING
if [ "$CONFIG_PREEMPT" != "y" -a "$CONFIG_PROFILING" = "y" ]; then
dep_tristate ' OProfile system profiling (EXPERIMENTAL)' CONFIG_OPROFILE
fi
endmenu
fi
OTOH I wonder whether you really want an submenu. It could as well just
be part of the general settings one.
+obj-$(CONFIG_OPROFILE) += oprofile.o
+
+oprofile-objs := oprof.o cpu_buffer.o event_buffer.o \
+ buffer_sync.o oprofilefs.o \
+ oprofile_files.o
+
+include $(ARCH)/Makefile
+
+include $(TOPDIR)/Rules.make
Usually <foo>-objs is below obj-*, but that's just cosmetic. The Makefile
inclusion seems very wrong to me. Why do you need it?
Shouldn't drivers/oprofile/i386/ be arch/i386/oprofile??
/**
+ * \file oprofilefs.c
+ * Copyright 2002 the LyX Team
+ * Read the file COPYING
+ *
+ * \author John Levon <levon@movementarian.org>
+ *
+ * Based on fs/binfmt_misc.c
+ *
+ * A simple filesystem for configuration and
+ * access of oprofile.
+ */
Why is this copyright different from the others?
ssize_t fail_write(struct file * file, const char * buf, size_t count, loff_t *
offset)
+{
+ return -EPERM;
+}
Why don't you just set no write method at all?
Maybe oprofilefs wants to become a generic version, it has nothing
oprofile-specific..
#ifndef CONFIG_PROFILING
+
+asmlinkage int sys_lookup_dcookie(unsigned long cookie, char * buf, size_t
len)+{
+ return -ENOSYS;
+}
+
+#else
Please use cond_syscall() and compile that file only for CONFIG_PROFILING set.
+ struct dcookie_struct * d_cookie; /* cookie, if any */
Make that conditional on CONFIG_PROFILING?
/* Profile hooks */
+#ifdef CONFIG_PROFILING
+EXPORT_SYMBOL(profile_event_register);
+EXPORT_SYMBOL(profile_event_unregister);
+EXPORT_SYMBOL(dcookie_register);
+EXPORT_SYMBOL(dcookie_unregister);
+EXPORT_SYMBOL(get_dcookie);
+#endif
Put that exports into profile.c?
next prev parent reply other threads:[~2002-09-24 11:29 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-23 22:29 [PATCH][RFC] oprofile 2.5.38 patch John Levon
2002-09-24 18:48 ` Christoph Hellwig [this message]
2002-09-24 12:23 ` John Levon
2002-09-26 16:08 ` Alan Cox
[not found] <20020923222933.GA33523@compsoc.man.ac.uk.suse.lists.linux.kernel>
2002-09-24 12:43 ` Andi Kleen
2002-09-24 12:55 ` John Levon
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=20020924144838.A1144@sgi.com \
--to=hch@sgi.com \
--cc=bobm@fc.hp.com \
--cc=linux-kernel@vger.kernel.org \
--cc=movement@marcelothewonderpenguin.com \
--cc=phil.el@wanadoo.fr \
--cc=torvalds@transmeta.com \
/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;
as well as URLs for NNTP newsgroup(s).