From: Arnd Bergmann <arnd@arndb•de>
To: paulus@samba•org
Cc: Arnd Bergmann <arnd.bergmann@de•ibm.com>,
linuxppc-dev@ozlabs•org, cbe-oss-dev@ozlabs•org,
linux-kernel@vger•kernel.org
Subject: [PATCH 09/13] spufs: add a phys-id attribute to each SPU context
Date: Sun, 30 Apr 2006 01:28:21 +0200 [thread overview]
Message-ID: <20060429233921.629156000@localhost.localdomain> (raw)
In-Reply-To: 20060429232812.825714000@localhost.localdomain
For performance analysis, it is often interesting to know
which physical SPE a thread is currently running on, and,
more importantly, if it is running at all.
This patch adds a simple attribute to each SPU directory
with that information.
The attribute is read-only and called 'phys-id'. It contains
an ascii string with the number of the physical SPU (e.g.
"0x5"), or alternatively the string "0xffffffff" (32 bit -1)
when it is not running at all at the time that the file
is read.
Signed-off-by: Arnd Bergmann <arnd.bergmann@de•ibm.com>
---
Index: linus-2.6/arch/powerpc/platforms/cell/spufs/file.c
===================================================================
--- linus-2.6.orig/arch/powerpc/platforms/cell/spufs/file.c 2006-04-29 22:53:41.000000000 +0200
+++ linus-2.6/arch/powerpc/platforms/cell/spufs/file.c 2006-04-29 22:53:44.000000000 +0200
@@ -1328,6 +1328,22 @@
DEFINE_SIMPLE_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set,
"%llx\n")
+static u64 spufs_id_get(void *data)
+{
+ struct spu_context *ctx = data;
+ u64 num;
+
+ spu_acquire(ctx);
+ if (ctx->state == SPU_STATE_RUNNABLE)
+ num = ctx->spu->number;
+ else
+ num = (unsigned int)-1;
+ spu_release(ctx);
+
+ return num;
+}
+DEFINE_SIMPLE_ATTRIBUTE(spufs_id_ops, spufs_id_get, 0, "0x%llx\n")
+
struct tree_descr spufs_dir_contents[] = {
{ "mem", &spufs_mem_fops, 0666, },
{ "regs", &spufs_regs_fops, 0666, },
@@ -1351,5 +1367,6 @@
{ "spu_tag_mask", &spufs_spu_tag_mask_ops, 0666, },
{ "event_mask", &spufs_event_mask_ops, 0666, },
{ "srr0", &spufs_srr0_ops, 0666, },
+ { "phys-id", &spufs_id_ops, 0666, },
{},
};
--
next prev parent reply other threads:[~2006-04-29 23:28 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-29 23:28 [PATCH 00/13] Cell patches for 2.6.18 Arnd Bergmann
2006-04-29 23:28 ` [PATCH 01/13] cell: always build spu base into the kernel Arnd Bergmann
2006-04-29 23:28 ` [PATCH 02/13] spufs: restore mapping of mssync register Arnd Bergmann
2006-04-29 23:28 ` [PATCH 03/13] cell: fix interrupt priority handling Arnd Bergmann
2006-04-29 23:28 ` [PATCH 04/13] cell: remove broken __setup_cpu_be function Arnd Bergmann
2006-05-05 6:03 ` Paul Mackerras
2006-05-06 0:00 ` Geoff Levand
2006-05-08 18:09 ` Information for setting up SMT related parameters on linux 2.6.16 on POWER5 Meswani, Mitesh
2006-05-08 20:03 ` Will Schmidt
2006-05-08 23:04 ` Segher Boessenkool
2006-05-09 23:17 ` Meswani, Mitesh
2006-05-10 16:27 ` Will Schmidt
2006-05-20 0:25 ` Meswani, Mitesh
2006-04-29 23:28 ` [PATCH 05/13] cell: enable CPU_FTR_CI_LARGE_PAGE Arnd Bergmann
2006-04-29 23:28 ` [PATCH 06/13] powerpc: fix 64k pages on non-hypervisor Arnd Bergmann
2006-04-29 23:28 ` [PATCH 07/13] powerpc: export symbols for page size selection Arnd Bergmann
2006-05-05 5:56 ` Paul Mackerras
2006-05-05 9:12 ` Arnd Bergmann
2006-04-29 23:28 ` [PATCH 08/13] spufs: set up correct SLB entries for 64k pages Arnd Bergmann
2006-04-29 23:28 ` Arnd Bergmann [this message]
2006-04-29 23:28 ` [PATCH 11/13] cell: split out board specific files Arnd Bergmann
2006-04-30 2:52 ` Segher Boessenkool
2006-05-01 22:51 ` Geoff Levand
2006-05-01 23:09 ` Segher Boessenkool
2006-05-01 23:49 ` [Cbe-oss-dev] " Arnd Bergmann
2006-05-01 23:50 ` Arnd Bergmann
2006-05-02 0:06 ` Segher Boessenkool
2006-05-02 10:59 ` Arnd Bergmann
2006-05-02 23:38 ` Segher Boessenkool
2006-05-03 0:18 ` Arnd Bergmann
2006-05-03 2:46 ` Paul Mackerras
2006-05-03 6:28 ` Segher Boessenkool
2006-05-04 2:03 ` Benjamin Herrenschmidt
2006-05-02 18:20 ` Geoff Levand
2006-05-02 18:30 ` Arnd Bergmann
2006-05-02 0:13 ` Michael Ellerman
2006-05-02 18:20 ` [Cbe-oss-dev] [PATCH 11/13] cell: split out board specificfil es Geoff Levand
2006-05-02 13:45 ` [PATCH 11/13] cell: split out board specific files Christoph Hellwig
2006-04-29 23:28 ` [PATCH 12/13] cell: abstract priviledge-1 SPU registers for hypervisors Arnd Bergmann
2006-04-29 23:28 ` [PATCH 13/13] cell: set SPU interrupt affinity in spu_priv1 code Arnd Bergmann
2006-04-29 23:42 ` [PATCH 10/13] cell: correctly detect systemsim host Arnd Bergmann
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