Messages in this thread Patch in this message | | | Subject | Re: [Perfctr-devel] perfctr and Linus' tree? | Date | Mon, 10 Mar 2003 16:43:11 +0900 | From | Hiro Yoshioka <> |
| |
From: Mikael Pettersson <mikpe@user.it.uu.se> > Hiro Yoshioka writes: > > I have a question. Is there any progress on merging the > > perfctr patch to Linus' kernel tree? > > > > http://www.uwsg.iu.edu/hypermail/linux/kernel/0303.0/0647.html > > > > I found the DCL patch set includes the perfctr patch. > > http://lists.osdl.org/pipermail/dcl_developer/2003-March/000009.html > > No progress since Linus totally ignored it, but at least two > perfctr-patched trees exist. OSDL does one for the development > kernel, and Jack Perdue has pre-patched RedHat kernel .rpms. > (For Jack's stuff, check out PAPI -> Links -> Related Software.) > > I'm planning to simplify the kernel <--> user-space interface in > perfctr-2.6 (drop /proc/pid/perfctr and go back to /dev/perfctr), > and then I _think_ I can do a version that doesn't require patching > kernel source. (It will do binary code patching at module load-time > instead. Horrible as that sounds, it's easier to deal with for users.)
I like /proc/pid/perfctr interface (virtual PMC mode).
The following patch should be included into the main line kernel, shouldn't it?
--- linux-2.5.62-perfctr/include/asm-i386/processor.h.~1~ 2003-02-18 02:06 :53.000000000 +0100 +++ linux-2.5.62-perfctr/include/asm-i386/processor.h 2003-02-18 02:18:36.0000 00000 +0100 @@ -372,6 +372,11 @@ unsigned long __cacheline_filler[5]; }; +/* + * Virtual per-process performance-monitoring counters. + */ +struct vperfctr; /* opaque; no need to depend on <linux/perfctr.h> */ + struct thread_struct { /* cached TLS descriptors. */ struct desc_struct tls_array[GDT_ENTRY_TLS_ENTRIES]; @@ -393,6 +398,8 @@ unsigned int saved_fs, saved_gs; /* IO permissions */ unsigned long *ts_io_bitmap; +/* performance counters */ + struct vperfctr *perfctr; }; #define INIT_THREAD { \ --------------------------------------------- I think a per process (thread) performance monitoring is very important.
Thanks in advance, Hiro - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |