From: Gerhard Stenzel Date: Fri, 28 Mar 2008 03:18:30 +0000 (+1100) Subject: [POWERPC] spufs: fix incorrect file descriptors in SPU coredump note names X-Git-Tag: firefly_0821_release~21602^2~17^2 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ada397e93d6002021f5bf4ba060aa4ecd5dea3e5;p=firefly-linux-kernel-4.4.55.git [POWERPC] spufs: fix incorrect file descriptors in SPU coredump note names At present, ppu-gdb can't trace spu infomation with coredump generated by the kernel. While the core dumps notes have correct contents, they have the wrong names, as the file descriptors used to generate the note names are off-by-one. An application that opens a SPE context as fd 3, the current core dump code will generate notes like: SPU/4/mem SPU/4/regs etc. This confuses GDB, which knows it is looking for SPE context 3 (from parsing the spu_context_run system call arguments), and cannot find any notes that match context 3. This change corrects the file descriptor counting, to only increment the fd until after we've written the note name. Signed-off-by: Gerhard Stenzel Signed-off-by: Jeremy Kerr --- diff --git a/arch/powerpc/platforms/cell/spufs/coredump.c b/arch/powerpc/platforms/cell/spufs/coredump.c index 0c6a96b82b2d..b962c3ab470c 100644 --- a/arch/powerpc/platforms/cell/spufs/coredump.c +++ b/arch/powerpc/platforms/cell/spufs/coredump.c @@ -133,8 +133,6 @@ static struct spu_context *coredump_next_context(int *fd) if (ctx->flags & SPU_CREATE_NOSCHED) continue; - /* start searching the next fd next time we're called */ - (*fd)++; break; } @@ -157,6 +155,9 @@ int spufs_coredump_extra_notes_size(void) break; size += rc; + + /* start searching the next fd next time */ + fd++; } return size; @@ -239,6 +240,9 @@ int spufs_coredump_extra_notes_write(struct file *file, loff_t *foffset) } spu_release_saved(ctx); + + /* start searching the next fd next time */ + fd++; } return 0;