From 755807a296f77ca7c31dc000afdfe1e5172bbf72 Mon Sep 17 00:00:00 2001 From: Dave Olson Date: Thu, 6 Dec 2007 00:28:02 -0800 Subject: [PATCH] IB/ipath: Changes for fields moving from devdata to portdata This patch moves some arrays that were defined per-device to be variables defined in the per context data structure, thus avoiding extra kzalloc() calls. Signed-off-by: Dave Olson Signed-off-by: Roland Dreier --- drivers/infiniband/hw/ipath/ipath_file_ops.c | 5 +++-- drivers/infiniband/hw/ipath/ipath_init_chip.c | 15 --------------- drivers/infiniband/hw/ipath/ipath_intr.c | 4 ++-- drivers/infiniband/hw/ipath/ipath_kernel.h | 16 ++++++---------- drivers/infiniband/hw/ipath/ipath_stats.c | 13 ++++++------- 5 files changed, 17 insertions(+), 36 deletions(-) diff --git a/drivers/infiniband/hw/ipath/ipath_file_ops.c b/drivers/infiniband/hw/ipath/ipath_file_ops.c index 65da7a9808e..2a75faf1d10 100644 --- a/drivers/infiniband/hw/ipath/ipath_file_ops.c +++ b/drivers/infiniband/hw/ipath/ipath_file_ops.c @@ -1785,6 +1785,7 @@ static int find_shared_port(struct file *fp, } port_fp(fp) = pd; subport_fp(fp) = pd->port_cnt++; + pd->port_subpid[subport_fp(fp)] = current->pid; tidcursor_fp(fp) = 0; pd->active_slaves |= 1 << subport_fp(fp); ipath_cdbg(PROC, @@ -1915,8 +1916,7 @@ static int ipath_do_user_init(struct file *fp, */ head32 = ipath_read_ureg32(dd, ur_rcvegrindextail, pd->port_port); ipath_write_ureg(dd, ur_rcvegrindexhead, head32, pd->port_port); - dd->ipath_lastegrheads[pd->port_port] = -1; - dd->ipath_lastrcvhdrqtails[pd->port_port] = -1; + pd->port_lastrcvhdrqtail = -1; ipath_cdbg(VERBOSE, "Wrote port%d egrhead %x from tail regs\n", pd->port_port, head32); pd->port_tidcursor = 0; /* start at beginning after open */ @@ -2019,6 +2019,7 @@ static int ipath_close(struct inode *in, struct file *fp) * the slave(s) don't wait for receive data forever. */ pd->active_slaves &= ~(1 << fd->subport); + pd->port_subpid[fd->subport] = 0; mutex_unlock(&ipath_mutex); goto bail; } diff --git a/drivers/infiniband/hw/ipath/ipath_init_chip.c b/drivers/infiniband/hw/ipath/ipath_init_chip.c index cf64d3855ff..98b51465b58 100644 --- a/drivers/infiniband/hw/ipath/ipath_init_chip.c +++ b/drivers/infiniband/hw/ipath/ipath_init_chip.c @@ -272,22 +272,7 @@ static int init_chip_first(struct ipath_devdata *dd, goto done; } - dd->ipath_lastegrheads = kzalloc(sizeof(*dd->ipath_lastegrheads) - * dd->ipath_cfgports, - GFP_KERNEL); - dd->ipath_lastrcvhdrqtails = - kzalloc(sizeof(*dd->ipath_lastrcvhdrqtails) - * dd->ipath_cfgports, GFP_KERNEL); - - if (!dd->ipath_lastegrheads || !dd->ipath_lastrcvhdrqtails) { - ipath_dev_err(dd, "Unable to allocate head arrays, " - "failing\n"); - ret = -ENOMEM; - goto done; - } - pd = create_portdata0(dd); - if (!pd) { ipath_dev_err(dd, "Unable to allocate portdata for port " "0, failing\n"); diff --git a/drivers/infiniband/hw/ipath/ipath_intr.c b/drivers/infiniband/hw/ipath/ipath_intr.c index d9f8342e954..e2ce5314504 100644 --- a/drivers/infiniband/hw/ipath/ipath_intr.c +++ b/drivers/infiniband/hw/ipath/ipath_intr.c @@ -693,7 +693,7 @@ static int handle_errors(struct ipath_devdata *dd, ipath_err_t errs) * except kernel */ tl = *(u64 *) pd->port_rcvhdrtail_kvaddr; - if (tl == dd->ipath_lastrcvhdrqtails[i]) + if (tl == pd->port_lastrcvhdrqtail) continue; hd = ipath_read_ureg32(dd, ur_rcvhdrhead, i); @@ -703,7 +703,7 @@ static int handle_errors(struct ipath_devdata *dd, ipath_err_t errs) (!hd && tl == dd->ipath_hdrqlast)) { if (i == 0) chkerrpkts = 1; - dd->ipath_lastrcvhdrqtails[i] = tl; + pd->port_lastrcvhdrqtail = tl; pd->port_hdrqfull++; /* flush hdrqfull so that poll() sees it */ wmb(); diff --git a/drivers/infiniband/hw/ipath/ipath_kernel.h b/drivers/infiniband/hw/ipath/ipath_kernel.h index 57e21bbd9ff..7bb0d08820d 100644 --- a/drivers/infiniband/hw/ipath/ipath_kernel.h +++ b/drivers/infiniband/hw/ipath/ipath_kernel.h @@ -141,6 +141,11 @@ struct ipath_portdata { u32 port_pionowait; /* total number of rcvhdrqfull errors */ u32 port_hdrqfull; + /* + * Used to suppress multiple instances of same + * port staying stuck at same point. + */ + u32 port_lastrcvhdrqtail; /* saved total number of rcvhdrqfull errors for poll edge trigger */ u32 port_hdrqfull_poll; /* total number of polled urgent packets */ @@ -149,6 +154,7 @@ struct ipath_portdata { u32 port_urgent_poll; /* pid of process using this port */ pid_t port_pid; + pid_t port_subpid[INFINIPATH_MAX_SUBPORT]; /* same size as task_struct .comm[] */ char port_comm[16]; /* pkeys set by this use of this port */ @@ -319,16 +325,6 @@ struct ipath_devdata { /* count of port 0 hdrqfull errors */ u32 ipath_p0_hdrqfull; - /* - * (*cfgports) used to suppress multiple instances of same - * port staying stuck at same point - */ - u32 *ipath_lastrcvhdrqtails; - /* - * (*cfgports) used to suppress multiple instances of same - * port staying stuck at same point - */ - u32 *ipath_lastegrheads; /* * index of last piobuffer we used. Speeds up searching, by * starting at this point. Doesn't matter if multiple cpu's use and diff --git a/drivers/infiniband/hw/ipath/ipath_stats.c b/drivers/infiniband/hw/ipath/ipath_stats.c index fd897652da6..d2725cd11bd 100644 --- a/drivers/infiniband/hw/ipath/ipath_stats.c +++ b/drivers/infiniband/hw/ipath/ipath_stats.c @@ -238,7 +238,7 @@ static void ipath_chk_errormask(struct ipath_devdata *dd) void ipath_get_faststats(unsigned long opaque) { struct ipath_devdata *dd = (struct ipath_devdata *) opaque; - u32 val; + int i; static unsigned cnt; unsigned long flags; u64 traffic_wds; @@ -322,12 +322,11 @@ void ipath_get_faststats(unsigned long opaque) /* limit qfull messages to ~one per minute per port */ if ((++cnt & 0x10)) { - for (val = dd->ipath_cfgports - 1; ((int)val) >= 0; - val--) { - if (dd->ipath_lastegrheads[val] != -1) - dd->ipath_lastegrheads[val] = -1; - if (dd->ipath_lastrcvhdrqtails[val] != -1) - dd->ipath_lastrcvhdrqtails[val] = -1; + for (i = (int) dd->ipath_cfgports; --i >= 0; ) { + struct ipath_portdata *pd = dd->ipath_pd[i]; + + if (pd && pd->port_lastrcvhdrqtail != -1) + pd->port_lastrcvhdrqtail = -1; } } -- 2.41.1