diff options
| author | arnd@arndb.de <arnd@arndb.de> | 2006-06-19 22:33:24 +0400 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-06-21 09:01:30 +0400 |
| commit | 7b1a701480fb17b7f78b95b257bfc90a4f949d04 (patch) | |
| tree | 658ea67f2b96a174b90a3de52e2251a4471c2dc4 /arch/powerpc | |
| parent | 724bd80e8102ac137868b23fad2b06af65f8e168 (diff) | |
| download | linux-7b1a701480fb17b7f78b95b257bfc90a4f949d04.tar.xz | |
[POWERPC] spufs: add a phys-id attribute to each SPU context
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>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/platforms/cell/spufs/file.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c index 3bc00913fe18..80c02660e617 100644 --- a/arch/powerpc/platforms/cell/spufs/file.c +++ b/arch/powerpc/platforms/cell/spufs/file.c @@ -1328,6 +1328,22 @@ static u64 spufs_srr0_get(void *data) 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 @@ struct tree_descr spufs_dir_contents[] = { { "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, }, {}, }; |