Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935793Ab3DKNaj (ORCPT ); Thu, 11 Apr 2013 09:30:39 -0400 Received: from mx1.redhat.com ([209.132.183.28]:52839 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935388Ab3DKNab (ORCPT ); Thu, 11 Apr 2013 09:30:31 -0400 Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 Subject: [PATCH 21/26] mips: Don't use create_proc_read_entry() [RFC] To: linux-kernel@vger.kernel.org From: David Howells Cc: linux-mips@linux-mips.org, viro@ZenIV.linux.org.uk, Ralf Baechle Date: Thu, 11 Apr 2013 14:30:24 +0100 Message-ID: <20130411133024.32763.36191.stgit@warthog.procyon.org.uk> In-Reply-To: <20130411132739.32763.82609.stgit@warthog.procyon.org.uk> References: <20130411132739.32763.82609.stgit@warthog.procyon.org.uk> User-Agent: StGit/0.16 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 12989 Lines: 412 Don't use create_proc_read_entry() as that is deprecated, but rather use proc_create_data() and seq_file instead. Signed-off-by: David Howells cc: Ralf Baechle cc: linux-mips@linux-mips.org --- arch/mips/kernel/smtc-proc.c | 64 +++++++++------------- arch/mips/pci/ops-pmcmsp.c | 95 ++++++++++++++------------------- arch/mips/sibyte/sb1250/bus_watcher.c | 81 +++++++++++++--------------- 3 files changed, 104 insertions(+), 136 deletions(-) diff --git a/arch/mips/kernel/smtc-proc.c b/arch/mips/kernel/smtc-proc.c index aee7c81..9fb7144 100644 --- a/arch/mips/kernel/smtc-proc.c +++ b/arch/mips/kernel/smtc-proc.c @@ -16,6 +16,7 @@ #include #include #include +#include #include @@ -30,51 +31,39 @@ unsigned long selfipis[NR_CPUS]; struct smtc_cpu_proc smtc_cpu_stats[NR_CPUS]; -static struct proc_dir_entry *smtc_stats; - atomic_t smtc_fpu_recoveries; -static int proc_read_smtc(char *page, char **start, off_t off, - int count, int *eof, void *data) +static int smtc_proc_show(struct seq_file *m, void *v) { - int totalen = 0; - int len; int i; extern unsigned long ebase; - len = sprintf(page, "SMTC Status Word: 0x%08x\n", smtc_status); - totalen += len; - page += len; - len = sprintf(page, "Config7: 0x%08x\n", read_c0_config7()); - totalen += len; - page += len; - len = sprintf(page, "EBASE: 0x%08lx\n", ebase); - totalen += len; - page += len; - len = sprintf(page, "Counter Interrupts taken per CPU (TC)\n"); - totalen += len; - page += len; - for (i=0; i < NR_CPUS; i++) { - len = sprintf(page, "%d: %ld\n", i, smtc_cpu_stats[i].timerints); - totalen += len; - page += len; - } - len = sprintf(page, "Self-IPIs by CPU:\n"); - totalen += len; - page += len; - for(i = 0; i < NR_CPUS; i++) { - len = sprintf(page, "%d: %ld\n", i, smtc_cpu_stats[i].selfipis); - totalen += len; - page += len; - } - len = sprintf(page, "%d Recoveries of \"stolen\" FPU\n", - atomic_read(&smtc_fpu_recoveries)); - totalen += len; - page += len; + seq_printf(m, "SMTC Status Word: 0x%08x\n", smtc_status); + seq_printf(m, "Config7: 0x%08x\n", read_c0_config7()); + seq_printf(m, "EBASE: 0x%08lx\n", ebase); + seq_printf(m, "Counter Interrupts taken per CPU (TC)\n"); + for (i=0; i < NR_CPUS; i++) + seq_printf(m, "%d: %ld\n", i, smtc_cpu_stats[i].timerints); + seq_printf(m, "Self-IPIs by CPU:\n"); + for(i = 0; i < NR_CPUS; i++) + seq_printf(m, "%d: %ld\n", i, smtc_cpu_stats[i].selfipis); + seq_printf(m, "%d Recoveries of \"stolen\" FPU\n", + atomic_read(&smtc_fpu_recoveries)); + return 0; +} - return totalen; +static int smtc_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, smtc_proc_show, NULL); } +static const struct file_operations smtc_proc_fops = { + .open = smtc_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release, +}; + void init_smtc_stats(void) { int i; @@ -86,6 +75,5 @@ void init_smtc_stats(void) atomic_set(&smtc_fpu_recoveries, 0); - smtc_stats = create_proc_read_entry("smtc", 0444, NULL, - proc_read_smtc, NULL); + proc_create("smtc", 0444, NULL, &smtc_proc_fops); } diff --git a/arch/mips/pci/ops-pmcmsp.c b/arch/mips/pci/ops-pmcmsp.c index d0b6f83..4eaab63 100644 --- a/arch/mips/pci/ops-pmcmsp.c +++ b/arch/mips/pci/ops-pmcmsp.c @@ -53,56 +53,51 @@ static void pci_proc_init(void); /***************************************************************************** * - * FUNCTION: read_msp_pci_counts + * FUNCTION: show_msp_pci_counts * _________________________________________________________________________ * * DESCRIPTION: Prints the count of how many times each PCI * interrupt has asserted. Can be invoked by the * /proc filesystem. * - * INPUTS: page - part of STDOUT calculation - * off - part of STDOUT calculation - * count - part of STDOUT calculation - * data - unused + * INPUTS: m - synthetic file construction data + * v - iterator * - * OUTPUTS: start - new start location - * eof - end of file pointer - * - * RETURNS: len - STDOUT length + * RETURNS: 0 or error * ****************************************************************************/ -static int read_msp_pci_counts(char *page, char **start, off_t off, - int count, int *eof, void *data) +static int show_msp_pci_counts(struct seq_file *m, void *v) { int i; - int len = 0; unsigned int intcount, total = 0; for (i = 0; i < 32; ++i) { intcount = pci_int_count[i]; if (intcount != 0) { - len += sprintf(page + len, "[%d] = %u\n", i, intcount); + seq_printf(m, "[%d] = %u\n", i, intcount); total += intcount; } } - len += sprintf(page + len, "total = %u\n", total); - if (len <= off+count) - *eof = 1; - - *start = page + off; - len -= off; - if (len > count) - len = count; - if (len < 0) - len = 0; + seq_printf(m, "total = %u\n", total); + return 0; +} - return len; +static int msp_pci_rd_cnt_open(struct inode *inode, struct file *file) +{ + return single_open(file, show_msp_pci_counts, NULL); } +static const struct file_operations msp_pci_rd_cnt_fops = { + .open = msp_pci_rd_cnt_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release, +}; + /***************************************************************************** * - * FUNCTION: gen_pci_cfg_wr + * FUNCTION: gen_pci_cfg_wr_show * _________________________________________________________________________ * * DESCRIPTION: Generates a configuration write cycle for debug purposes. @@ -112,37 +107,30 @@ static int read_msp_pci_counts(char *page, char **start, off_t off, * PCI bus. Intent is that this function by invocable from * the /proc filesystem. * - * INPUTS: page - part of STDOUT calculation - * off - part of STDOUT calculation - * count - part of STDOUT calculation - * data - unused + * INPUTS: m - synthetic file construction data + * v - iterator * - * OUTPUTS: start - new start location - * eof - end of file pointer - * - * RETURNS: len - STDOUT length + * RETURNS: 0 or error * ****************************************************************************/ -static int gen_pci_cfg_wr(char *page, char **start, off_t off, - int count, int *eof, void *data) +static int gen_pci_cfg_wr_show(struct seq_file *m, void *v) { unsigned char where = 0; /* Write to static Device/Vendor ID */ unsigned char bus_num = 0; /* Bus 0 */ unsigned char dev_fn = 0xF; /* Arbitrary device number */ u32 wr_data = 0xFF00AA00; /* Arbitrary data */ struct msp_pci_regs *preg = (void *)PCI_BASE_REG; - int len = 0; unsigned long value; int intr; - len += sprintf(page + len, "PMC MSP PCI: Beginning\n"); + seq_puts(m, "PMC MSP PCI: Beginning\n"); if (proc_init == 0) { pci_proc_init(); proc_init = ~0; } - len += sprintf(page + len, "PMC MSP PCI: Before Cfg Wr\n"); + seq_puts(m, "PMC MSP PCI: Before Cfg Wr\n"); /* * Generate PCI Configuration Write Cycle @@ -168,21 +156,22 @@ static int gen_pci_cfg_wr(char *page, char **start, off_t off, */ intr = preg->if_status; - len += sprintf(page + len, "PMC MSP PCI: After Cfg Wr\n"); - - /* Handle STDOUT calculations */ - if (len <= off+count) - *eof = 1; - *start = page + off; - len -= off; - if (len > count) - len = count; - if (len < 0) - len = 0; + seq_puts(m, "PMC MSP PCI: After Cfg Wr\n"); + return 0; +} - return len; +static int gen_pci_cfg_wr_open(struct inode *inode, struct file *file) +{ + return single_open(file, gen_pci_cfg_wr_show, NULL); } +static const struct file_operations gen_pci_cfg_wr_fops = { + .open = gen_pci_cfg_wr_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release, +}; + /***************************************************************************** * * FUNCTION: pci_proc_init @@ -199,10 +188,8 @@ static int gen_pci_cfg_wr(char *page, char **start, off_t off, ****************************************************************************/ static void pci_proc_init(void) { - create_proc_read_entry("pmc_msp_pci_rd_cnt", 0, NULL, - read_msp_pci_counts, NULL); - create_proc_read_entry("pmc_msp_pci_cfg_wr", 0, NULL, - gen_pci_cfg_wr, NULL); + proc_create("pmc_msp_pci_rd_cnt", 0, NULL, &msp_pci_rd_cnt_fops); + proc_create("pmc_msp_pci_cfg_wr", 0, NULL, &gen_pci_cfg_wr_fops); } #endif /* CONFIG_PROC_FS && PCI_COUNTERS */ diff --git a/arch/mips/sibyte/sb1250/bus_watcher.c b/arch/mips/sibyte/sb1250/bus_watcher.c index e651105..cb1e3cb 100644 --- a/arch/mips/sibyte/sb1250/bus_watcher.c +++ b/arch/mips/sibyte/sb1250/bus_watcher.c @@ -30,6 +30,7 @@ #include #include #include +#include #include #include @@ -99,63 +100,60 @@ void check_bus_watcher(void) printk("Bus watcher indicates no error\n"); } -static int bw_print_buffer(char *page, struct bw_stats_struct *stats) +#ifdef CONFIG_PROC_FS + +/* For simplicity, I want to assume a single read is required each + time */ +static int bw_proc_show(struct seq_file *m, void *v) { - int len; - - len = sprintf(page, "SiByte Bus Watcher statistics\n"); - len += sprintf(page+len, "-----------------------------\n"); - len += sprintf(page+len, "L2-d-cor %8ld\nL2-d-bad %8ld\n", - stats->l2_cor_d, stats->l2_bad_d); - len += sprintf(page+len, "L2-t-cor %8ld\nL2-t-bad %8ld\n", - stats->l2_cor_t, stats->l2_bad_t); - len += sprintf(page+len, "MC-d-cor %8ld\nMC-d-bad %8ld\n", - stats->mem_cor_d, stats->mem_bad_d); - len += sprintf(page+len, "IO-err %8ld\n", stats->bus_error); - len += sprintf(page+len, "\nLast recorded signature:\n"); - len += sprintf(page+len, "Request %02x from %d, answered by %d with Dcode %d\n", - (unsigned int)(G_SCD_BERR_TID(stats->status) & 0x3f), - (int)(G_SCD_BERR_TID(stats->status) >> 6), - (int)G_SCD_BERR_RID(stats->status), - (int)G_SCD_BERR_DCODE(stats->status)); + struct bw_stats_struct *stats = m->private; + + seq_puts(m, "SiByte Bus Watcher statistics\n"); + seq_puts(m, "-----------------------------\n"); + seq_printf(m, "L2-d-cor %8ld\nL2-d-bad %8ld\n", + stats->l2_cor_d, stats->l2_bad_d); + seq_printf(m, "L2-t-cor %8ld\nL2-t-bad %8ld\n", + stats->l2_cor_t, stats->l2_bad_t); + seq_printf(m, "MC-d-cor %8ld\nMC-d-bad %8ld\n", + stats->mem_cor_d, stats->mem_bad_d); + seq_printf(m, "IO-err %8ld\n", stats->bus_error); + seq_puts(m, "\nLast recorded signature:\n"); + seq_printf(m, "Request %02x from %d, answered by %d with Dcode %d\n", + (unsigned int)(G_SCD_BERR_TID(stats->status) & 0x3f), + (int)(G_SCD_BERR_TID(stats->status) >> 6), + (int)G_SCD_BERR_RID(stats->status), + (int)G_SCD_BERR_DCODE(stats->status)); /* XXXKW indicate multiple errors between printings, or stats collection (or both)? */ if (stats->status & M_SCD_BERR_MULTERRS) - len += sprintf(page+len, "Multiple errors observed since last check.\n"); + seq_puts(m, "Multiple errors observed since last check.\n"); if (stats->status_printed) { - len += sprintf(page+len, "(no change since last printing)\n"); + seq_puts(m, "(no change since last printing)\n"); } else { stats->status_printed = 1; } - return len; + return 0; } -#ifdef CONFIG_PROC_FS - -/* For simplicity, I want to assume a single read is required each - time */ -static int bw_read_proc(char *page, char **start, off_t off, - int count, int *eof, void *data) +static int bw_proc_open(struct inode *inode, struct file *file) { - int len; - - if (off == 0) { - len = bw_print_buffer(page, data); - *start = page; - } else { - len = 0; - *eof = 1; - } - return len; + return single_open(file, bw_proc_show, PDE_DATA(inode)); } +static const struct file_operations bw_proc_fops = { + .open = bw_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release, +}; + static void create_proc_decoder(struct bw_stats_struct *stats) { struct proc_dir_entry *ent; - ent = create_proc_read_entry("bus_watcher", S_IWUSR | S_IRUGO, NULL, - bw_read_proc, stats); + ent = proc_create_data("bus_watcher", S_IWUSR | S_IRUGO, NULL, + &bw_proc_fops, stats); if (!ent) { printk(KERN_INFO "Unable to initialize bus_watcher /proc entry\n"); return; @@ -210,11 +208,6 @@ static irqreturn_t sibyte_bw_int(int irq, void *data) stats->bus_error += G_SCD_MEM_BUSERR(cntr); csr_out32(0, IOADDR(A_BUS_MEM_IO_ERRORS)); -#ifndef CONFIG_PROC_FS - bw_print_buffer(bw_buf, stats); - printk(bw_buf); -#endif - return IRQ_HANDLED; } -- 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/