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51 lines
1.5 KiB
51 lines
1.5 KiB
// SPDX-License-Identifier: GPL-2.0 |
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#include <linux/bitops.h> |
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#include <linux/seq_file.h> |
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#include <scsi/scsi_cmnd.h> |
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#include <scsi/scsi_dbg.h> |
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#include "scsi_debugfs.h" |
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#define SCSI_CMD_FLAG_NAME(name)[const_ilog2(SCMD_##name)] = #name |
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static const char *const scsi_cmd_flags[] = { |
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SCSI_CMD_FLAG_NAME(TAGGED), |
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SCSI_CMD_FLAG_NAME(UNCHECKED_ISA_DMA), |
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SCSI_CMD_FLAG_NAME(INITIALIZED), |
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}; |
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#undef SCSI_CMD_FLAG_NAME |
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static int scsi_flags_show(struct seq_file *m, const unsigned long flags, |
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const char *const *flag_name, int flag_name_count) |
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{ |
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bool sep = false; |
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int i; |
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for_each_set_bit(i, &flags, BITS_PER_LONG) { |
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if (sep) |
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seq_puts(m, "|"); |
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sep = true; |
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if (i < flag_name_count && flag_name[i]) |
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seq_puts(m, flag_name[i]); |
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else |
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seq_printf(m, "%d", i); |
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} |
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return 0; |
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} |
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void scsi_show_rq(struct seq_file *m, struct request *rq) |
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{ |
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struct scsi_cmnd *cmd = container_of(scsi_req(rq), typeof(*cmd), req); |
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int alloc_ms = jiffies_to_msecs(jiffies - cmd->jiffies_at_alloc); |
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int timeout_ms = jiffies_to_msecs(rq->timeout); |
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const u8 *const cdb = READ_ONCE(cmd->cmnd); |
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char buf[80] = "(?)"; |
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if (cdb) |
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__scsi_format_command(buf, sizeof(buf), cdb, cmd->cmd_len); |
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seq_printf(m, ", .cmd=%s, .retries=%d, .result = %#x, .flags=", buf, |
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cmd->retries, cmd->result); |
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scsi_flags_show(m, cmd->flags, scsi_cmd_flags, |
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ARRAY_SIZE(scsi_cmd_flags)); |
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seq_printf(m, ", .timeout=%d.%03d, allocated %d.%03d s ago", |
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timeout_ms / 1000, timeout_ms % 1000, |
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alloc_ms / 1000, alloc_ms % 1000); |
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}
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