/* * f2fs IO tracer * * Copyright (c) 2014 Motorola Mobility * Copyright (c) 2014 Jaegeuk Kim * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include #include #include #include #include "f2fs.h" #include "trace.h" static RADIX_TREE(pids, GFP_ATOMIC); static spinlock_t pids_lock; static struct last_io_info last_io; static inline void __print_last_io(void) { if (!last_io.len) return; trace_printk("%3x:%3x %4x %-16s %2x %5x %5x %12x %4x\n", last_io.major, last_io.minor, last_io.pid, "----------------", last_io.type, last_io.fio.op, last_io.fio.op_flags, last_io.fio.new_blkaddr, last_io.len); memset(&last_io, 0, sizeof(last_io)); } static int __file_type(struct inode *inode, pid_t pid) { if (f2fs_is_atomic_file(inode)) return __ATOMIC_FILE; else if (f2fs_is_volatile_file(inode)) return __VOLATILE_FILE; else if (S_ISDIR(inode->i_mode)) return __DIR_FILE; else if (inode->i_ino == F2FS_NODE_INO(F2FS_I_SB(inode))) return __NODE_FILE; else if (inode->i_ino == F2FS_META_INO(F2FS_I_SB(inode))) return __META_FILE; else if (pid) return __NORMAL_FILE; else return __MISC_FILE; } void f2fs_trace_pid(struct page *page) { struct inode *inode = page->mapping->host; pid_t pid = task_pid_nr(current); void *p; page->private = pid; if (radix_tree_preload(GFP_NOFS)) return; spin_lock(&pids_lock); p = radix_tree_lookup(&pids, pid); if (p == current) goto out; if (p) radix_tree_delete(&pids, pid); f2fs_radix_tree_insert(&pids, pid, current); trace_printk("%3x:%3x %4x %-16s\n", MAJOR(inode->i_sb->s_dev), MINOR(inode->i_sb->s_dev), pid, current->comm); out: spin_unlock(&pids_lock); radix_tree_preload_end(); } void f2fs_trace_ios(struct f2fs_io_info *fio, int flush) { struct inode *inode; pid_t pid; int major, minor; if (flush) { __print_last_io(); return; } inode = fio->page->mapping->host; pid = page_private(fio->page); major = MAJOR(inode->i_sb->s_dev); minor = MINOR(inode->i_sb->s_dev); if (last_io.major == major && last_io.minor == minor && last_io.pid == pid && last_io.type == __file_type(inode, pid) && last_io.fio.op == fio->op && last_io.fio.op_flags == fio->op_flags && last_io.fio.new_blkaddr + last_io.len == fio->new_blkaddr) { last_io.len++; return; } __print_last_io(); last_io.major = major; last_io.minor = minor; last_io.pid = pid; last_io.type = __file_type(inode, pid); last_io.fio = *fio; last_io.len = 1; return; } void f2fs_build_trace_ios(void) { spin_lock_init(&pids_lock); } #define PIDVEC_SIZE 128 static unsigned int gang_lookup_pids(pid_t *results, unsigned long first_index, unsigned int max_items) { struct radix_tree_iter iter; void **slot; unsigned int ret = 0; if (unlikely(!max_items)) return 0; radix_tree_for_each_slot(slot, &pids, &iter, first_index) { results[ret] = iter.index; if (++ret == PIDVEC_SIZE) break; } return ret; } void f2fs_destroy_trace_ios(void) { pid_t pid[PIDVEC_SIZE]; pid_t next_pid = 0; unsigned int found; spin_lock(&pids_lock); while ((found = gang_lookup_pids(pid, next_pid, PIDVEC_SIZE))) { unsigned idx; next_pid = pid[found - 1] + 1; for (idx = 0; idx < found; idx++) radix_tree_delete(&pids, pid[idx]); } spin_unlock(&pids_lock); } > ModeNameSize -rw-r--r--alphascale,asm9260.h2695log plain -rw-r--r--at91.h751log plain -rw-r--r--ath79-clk.h479log plain -rw-r--r--axis,artpec6-clkctrl.h1112log plain -rw-r--r--bcm-cygnus.h3135log plain -rw-r--r--bcm-ns2.h2915log plain -rw-r--r--bcm-nsp.h2148log plain -rw-r--r--bcm21664.h1984log plain -rw-r--r--bcm281xx.h2456log plain -rw-r--r--bcm2835-aux.h635log plain -rw-r--r--bcm2835.h1962log plain -rw-r--r--berlin2.h1034log plain -rw-r--r--berlin2q.h695log plain -rw-r--r--clps711x-clock.h718log plain -rw-r--r--efm32-cmu.h1112log plain -rw-r--r--exynos-audss-clk.h597log plain -rw-r--r--exynos3250.h9083log plain -rw-r--r--exynos4.h8284log plain -rw-r--r--exynos4415.h9828log plain -rw-r--r--exynos5250.h4616log plain -rw-r--r--exynos5260-clk.h14876log plain -rw-r--r--exynos5410.h1689log plain -rw-r--r--exynos5420.h6857log plain -rw-r--r--exynos5433.h45372log plain -rw-r--r--exynos5440.h1141log plain -rw-r--r--exynos7-clk.h5281log plain -rw-r--r--gxbb-aoclkc.h2866log plain -rw-r--r--gxbb-clkc.h592log plain -rw-r--r--hi3516cv300-clock.h1668log plain -rw-r--r--hi3519-clock.h1328log plain -rw-r--r--hi3620-clock.h4496log plain -rw-r--r--hi6220-clock.h4508log plain -rw-r--r--hip04-clock.h1137log plain -rw-r--r--histb-clock.h2012log plain -rw-r--r--hix5hd2-clock.h2415log plain -rw-r--r--imx1-clock.h1055log plain -rw-r--r--imx21-clock.h2461log plain -rw-r--r--imx27-clock.h3494log plain -rw-r--r--imx5-clock.h7212log plain -rw-r--r--imx6qdl-clock.h9593log plain -rw-r--r--imx6sl-clock.h5849log plain -rw-r--r--imx6sx-clock.h9099log plain -rw-r--r--imx6ul-clock.h8203log plain -rw-r--r--imx7d-clock.h15974log plain -rw-r--r--jz4740-cgu.h1028log plain -rw-r--r--jz4780-cgu.h2470log plain -rw-r--r--lpc18xx-ccu.h2134log plain -rw-r--r--lpc18xx-cgu.h1142log plain -rw-r--r--lpc32xx-clock.h1633log plain -rw-r--r--lsi,axm5516-clks.h974log plain -rw-r--r--marvell,mmp2.h2022log plain -rw-r--r--marvell,pxa168.h1654log plain -rw-r--r--marvell,pxa1928.h1535log plain -rw-r--r--marvell,pxa910.h1598log plain -rw-r--r--maxim,max77620.h632log plain -rw-r--r--maxim,max77686.h648log plain -rw-r--r--maxim,max77802.h630log plain -rw-r--r--meson8b-clkc.h523log plain -rw-r--r--microchip,pic32-clock.h1150log plain -rw-r--r--mpc512x-clock.h2236log plain -rw-r--r--mt2701-clk.h13832log plain -rw-r--r--mt8135-clk.h5641log plain -rw-r--r--mt8173-clk.h9293log plain -rw-r--r--oxsemi,ox810se.h1002log plain -rw-r--r--oxsemi,ox820.h1203log plain -rw-r--r--pistachio-clk.h4863log plain -rw-r--r--pxa-clock.h1715log plain -rw-r--r--qcom,gcc-apq8084.h12872log plain -rw-r--r--qcom,gcc-ipq4019.h5423log plain -rw-r--r--qcom,gcc-ipq806x.h8574log plain -rw-r--r--qcom,gcc-mdm9615.h9497log plain -rw-r--r--qcom,gcc-msm8660.h7932log plain -rw-r--r--qcom,gcc-msm8916.h6190log plain -rw-r--r--qcom,gcc-msm8960.h9342log plain -rw-r--r--qcom,gcc-msm8974.h12340log plain -rw-r--r--qcom,gcc-msm8994.h4858log plain -rw-r--r--qcom,gcc-msm8996.h12575log plain -rw-r--r--qcom,lcc-ipq806x.h899log plain -rw-r--r--qcom,lcc-mdm9615.h1701log plain -rw-r--r--qcom,lcc-msm8960.h1616log plain -rw-r--r--qcom,mmcc-apq8084.h5722log plain -rw-r--r--qcom,mmcc-msm8960.h4109log plain -rw-r--r--qcom,mmcc-msm8974.h5223log plain -rw-r--r--qcom,mmcc-msm8996.h9403log plain -rw-r--r--qcom,rpmcc.h2101log plain -rw-r--r--r7s72100-clock.h1218log plain -rw-r--r--r8a73a4-clock.h1596log plain -rw-r--r--r8a7740-clock.h1992log plain -rw-r--r--r8a7743-cpg-mssr.h1269log plain -rw-r--r--r8a7745-cpg-mssr.h1298log plain -rw-r--r--r8a7778-clock.h1855log plain -rw-r--r--r8a7779-clock.h1647log plain -rw-r--r--r8a7790-clock.h4367log plain -rw-r--r--r8a7791-clock.h4388log plain -rw-r--r--r8a7792-clock.h2562log plain -rw-r--r--r8a7793-clock.h4561log plain -rw-r--r--r8a7794-clock.h3679log plain -rw-r--r--r8a7795-cpg-mssr.h1890log plain -rw-r--r--r8a7796-cpg-mssr.h2066log plain -rw-r--r--renesas-cpg-mssr.h542log plain -rw-r--r--rk1108-cru.h6605log plain -rw-r--r--rk3036-cru.h4584log plain -rw-r--r--rk3066a-cru.h1068log plain -rw-r--r--rk3188-cru-common.h6105log plain -rw-r--r--rk3188-cru.h1435log plain